From 342222d143bb0d18946920276fab69355594b8e2 Mon Sep 17 00:00:00 2001
From: deepagent-ai <deepagent-ai@deepagent.ltd>
Date: Thu, 20 Aug 2026 16:11:32 +0800
Subject: [PATCH] 1.4.7

### Issue for this PR

Closes #

### Type of change

- [ ] Bug fix
- [ ] New feature
- [ ] Refactor / code improvement
- [ ] Documentation

### What does this PR do?

Please provide a description of the issue, the changes you made to fix
it, and why they work. It is expected that you understand why your
changes work and if you do not understand why at least say as much so a
maintainer knows how much to value the PR.

**If you paste a large clearly AI generated description here your PR may
be IGNORED or CLOSED!**

### How did you verify your code works?

### Screenshots / recordings

_If this is a UI change, please include a screenshot or recording._

### Checklist

- [ ] I have tested my changes locally
- [ ] I have not included unrelated changes in this PR

_If you do not follow this template your PR will be automatically
rejected._

---------

Co-authored-by: deepagent-code <deepagent-code@deepagent.ltd>
---
 .github/workflows/deepagent-code.yml          |     2 +-
 .github/workflows/docs-update.yml             |     2 +-
 .github/workflows/test.yml                    |    20 +
 .github/workflows/typecheck.yml               |     3 +-
 CHANGELOG.md                                  |    11 +
 README.md                                     |     2 +-
 github/README.md                              |     2 +-
 github/VERSION                                |     2 +-
 packages/app/package.json                     |     2 +-
 .../src/components/dialog-console-account.tsx |   105 +
 .../app/src/components/settings-providers.tsx |    42 +-
 .../components/settings-v2/import-history.tsx |    67 +-
 .../src/context/bug407008-projection.test.ts  |   435 +
 .../app/src/context/directory-sync.test.ts    |   171 +-
 packages/app/src/context/directory-sync.ts    |    56 +-
 .../context/global-sync/event-reducer.test.ts |   121 +
 .../src/context/global-sync/event-reducer.ts  |    41 +-
 packages/app/src/context/layout.tsx           |     2 +
 packages/app/src/context/models.tsx           |    69 +-
 .../src/context/permission-auto-respond.ts    |    14 +-
 packages/app/src/i18n/ar.ts                   |    16 +
 packages/app/src/i18n/br.ts                   |    16 +
 packages/app/src/i18n/bs.ts                   |    16 +
 packages/app/src/i18n/da.ts                   |    16 +
 packages/app/src/i18n/de.ts                   |    16 +
 packages/app/src/i18n/en.ts                   |    32 +
 packages/app/src/i18n/es.ts                   |    16 +
 packages/app/src/i18n/fr.ts                   |    16 +
 packages/app/src/i18n/ja.ts                   |    16 +
 packages/app/src/i18n/ko.ts                   |    16 +
 packages/app/src/i18n/no.ts                   |    16 +
 packages/app/src/i18n/pl.ts                   |    16 +
 packages/app/src/i18n/ru.ts                   |    16 +
 packages/app/src/i18n/th.ts                   |    16 +
 packages/app/src/i18n/tr.ts                   |    16 +
 packages/app/src/i18n/uk.ts                   |    16 +
 packages/app/src/i18n/zh.ts                   |    32 +
 packages/app/src/i18n/zht.ts                  |    16 +
 packages/app/src/pages/session.tsx            |    22 +-
 .../message-timeline-virtualize.test.ts       |   172 +
 .../message-timeline.bug407008.test.ts        |   369 +
 .../session/message-timeline.data.test.ts     |    61 +-
 .../pages/session/message-timeline.data.ts    |   107 +-
 .../src/pages/session/message-timeline.tsx    |    94 +-
 .../src/pages/session/session-side-panel.tsx  |     7 +
 .../src/pages/session/side-panel-stats.tsx    |   129 +
 packages/app/src/utils/message-order.test.ts  |    98 +
 packages/app/src/utils/message-order.ts       |    87 +
 packages/app/src/utils/session-stats.test.ts  |   181 +
 packages/app/src/utils/session-stats.ts       |   188 +
 packages/cli/script/generate.ts               |    24 +-
 packages/cli/src/services/daemon.ts           |    71 +-
 packages/cli/test/daemon.test.ts              |   151 +
 packages/cli/test/fixtures/legacy-entry.ts    |    62 +
 .../migration.sql                             |    20 +
 .../snapshot.json                             | 16233 ++++++++++++++++
 packages/core/package.json                    |     2 +-
 .../script/release-gate-migration-check.ts    |    21 +
 packages/core/src/agent-gateway.ts            |   100 +-
 .../src/context-federation/provider-owner.ts  |    15 +-
 .../context-federation/reconciliation-sql.ts  |    33 +
 .../src/context-federation/reconciliation.ts  |   158 +
 .../src/context-federation/session-context.ts |    10 +-
 packages/core/src/database/database.ts        |    11 +-
 packages/core/src/database/migration.gen.ts   |    10 +
 packages/core/src/database/migration.ts       |    71 +-
 ...260815120000_event_delivery_claim_lease.ts |    22 +
 ...815130000_event_multiprocess_extensions.ts |    41 +
 ...0260816000000_handoff_admission_receipt.ts |    35 +
 .../20260816073717_session_facade_activity.ts |    83 +
 ...000_receipt_active_pack_set_attribution.ts |    24 +
 ...16081000_session_context_reconciliation.ts |    49 +
 ...20000_session_intent_confirmation_state.ts |   253 +
 ...260820000000_remote_compact_persistence.ts |    86 +
 ...60820120000_session_turn_stage_evidence.ts |    39 +
 ...000_compaction_continuation_fail_closed.ts |    67 +
 .../src/deepagent/activity-authority.sql.ts   |    38 +-
 .../core/src/deepagent/activity-authority.ts  |   294 +-
 .../core/src/deepagent/deepagent-event-bus.ts |   332 +-
 .../core/src/deepagent/deepagent-event-sql.ts |    37 +-
 packages/core/src/deepagent/domain-pack.ts    |     8 +
 .../src/deepagent/handoff-admission-sql.ts    |    49 +
 .../core/src/deepagent/handoff-admission.ts   |   182 +
 .../core/src/deepagent/knowledge-retriever.ts |    40 +-
 .../deepagent/learning-lifecycle-trigger.ts   |     9 +-
 packages/core/src/deepagent/lmn-events.ts     |    36 +
 packages/core/src/deepagent/pinned-packs.ts   |    39 +
 .../core/src/deepagent/plan-controller.ts     |    14 +-
 .../core/src/deepagent/profile-builder.ts     |   168 +
 packages/core/src/deepagent/session-state.ts  |     9 +
 packages/core/src/event.ts                    |   171 +
 packages/core/src/permission/mutating.ts      |    15 +
 packages/core/src/session/compaction.ts       |     5 +-
 packages/core/src/session/sql.ts              |    13 +-
 packages/core/src/tool/bash.ts                |     8 -
 packages/core/test/agent-gateway.test.ts      |   136 +
 ...continuation-fail-closed-migration.test.ts |    86 +
 .../core/test/database-capability.test.ts     |    27 +-
 .../core/test/deepagent-event-bus.test.ts     |   253 +-
 .../activity-authority-facade.test.ts         |   432 +
 .../domain-pack-retrieval-isolation.test.ts   |    40 +-
 .../pack-activation-authority.test.ts         |   126 +
 .../core/test/deepagent/pinned-packs.test.ts  |    62 +
 .../test/deepagent/plan-controller.test.ts    |     7 +
 packages/core/test/event-snapshot.test.ts     |    72 +
 packages/core/test/event.test.ts              |    67 +
 packages/core/test/lmn-events.test.ts         |    15 +
 ...mote-compact-persistence-migration.test.ts |   239 +
 .../session-context-reconciliation.test.ts    |   322 +
 ...ntent-confirmation-state-migration.test.ts |   424 +
 .../turn-stage-evidence-migration.test.ts     |   116 +
 .../script/live-llm/providers.ts              |   165 +
 .../deepagent-code/script/live-llm/routes.ts  |     8 +
 packages/deepagent-code/script/models-data.ts |    30 +-
 .../deepagent-code/script/rel-001-drill.ts    |   215 +
 .../script/risk-003-maintenance.ts            |   204 +
 .../src/cli/cmd/github.handler.ts             |     2 +-
 packages/deepagent-code/src/cli/cmd/goal.ts   |   108 +
 .../src/cli/cmd/instance-sdk.ts               |    86 +
 packages/deepagent-code/src/cli/cmd/mcp.ts    |   212 +-
 .../deepagent-code/src/cli/cmd/oversight.ts   |    93 +
 packages/deepagent-code/src/cli/cmd/packs.ts  |    64 +
 packages/deepagent-code/src/cli/cmd/panel.ts  |    53 +
 packages/deepagent-code/src/cli/cmd/review.ts |    50 +
 packages/deepagent-code/src/cli/cmd/run.ts    |    51 +-
 .../src/cli/cmd/run/permission-mode.ts        |    50 +
 packages/deepagent-code/src/cli/cmd/serve.ts  |    64 +-
 .../deepagent-code/src/cli/cmd/session.ts     |    72 +-
 packages/deepagent-code/src/cli/cmd/wiki.ts   |   107 +
 .../deepagent-code/src/cli/cmd/worktree.ts    |   136 +
 .../src/context-federation/diagnostics.ts     |   145 +-
 .../provider-owner-runtime.ts                 |    59 +-
 .../session-context-runtime.ts                |    55 +-
 .../src/deepagent/profile-detector.ts         |   176 +-
 .../deepagent-code/src/effect/app-runtime.ts  |     3 +
 .../src/effect/runtime-flags.ts               |    44 +-
 packages/deepagent-code/src/index.ts          |    14 +
 .../src/legacy-event-canonicalizer-runtime.ts |    71 +
 .../src/location-index/runtime.ts             |     7 +-
 .../deepagent-code/src/permission/index.ts    |   205 +-
 .../deepagent-code/src/provider/transform.ts  |    42 +
 .../routes/instance/httpapi/groups/session.ts |    81 +
 .../instance/httpapi/handlers/deepagent.ts    |   136 +-
 .../instance/httpapi/handlers/session.ts      |    46 +-
 .../server/routes/instance/httpapi/public.ts  |     5 +
 .../src/session/__tests__/snapshot.test.ts    |   367 +
 .../src/session/activity-crash-test.ts        |     4 +
 .../src/session/agent-handoff-consumer.ts     |   112 +-
 .../src/session/compaction-sql.ts             |    27 +
 .../deepagent-code/src/session/compaction.ts  |   395 +-
 .../src/session/diff-artifact.ts              |   286 +-
 .../src/session/durable-executor-lock.ts      |    35 +-
 .../src/session/event-dispatcher.ts           |    14 +-
 .../src/session/facade-activity.ts            |   986 +
 .../src/session/goal-manager.ts               |     6 +-
 .../src/session/goal-tick-consumer.ts         |     8 +-
 packages/deepagent-code/src/session/llm.ts    |     3 +
 .../src/session/llm/native-request.ts         |    23 +-
 .../src/session/llm/native-runtime.ts         |     9 +-
 .../deepagent-code/src/session/llm/request.ts |    88 +-
 .../src/session/llm/tool-pairing.ts           |   157 +
 .../deepagent-code/src/session/processor.ts   |    67 +-
 .../src/session/prompt-intent.ts              |   166 +-
 packages/deepagent-code/src/session/prompt.ts |   601 +-
 .../src/session/remote-compact.ts             |   245 +
 packages/deepagent-code/src/session/retry.ts  |    58 +-
 .../deepagent-code/src/session/session.ts     |    52 +-
 .../deepagent-code/src/session/snapshot.ts    |   384 +
 packages/deepagent-code/src/session/steer.ts  |     6 +-
 .../src/session/tool-request-receipt.sql.ts   |     3 +
 .../src/session/turn-deadline-watchdog.ts     |   144 +
 .../src/session/turn-stage-evidence.sql.ts    |    27 +
 .../src/session/turn-stage-evidence.ts        |   111 +
 .../src/session/v4-event-runtime.ts           |     4 +
 packages/deepagent-code/src/snapshot/index.ts |   114 +-
 .../src/tool/activity_facade.ts               |   292 +
 packages/deepagent-code/src/tool/registry.ts  |    49 +
 packages/deepagent-code/src/tool/task-run.ts  |   130 +
 packages/deepagent-code/src/tool/task.ts      |    58 +-
 packages/deepagent-code/src/tool/truncate.ts  |    18 +-
 .../src/wiki/event-driven-archiver.ts         |     8 +-
 .../src/wiki/session-archive.ts               |    53 +-
 .../deepagent-code/src/wiki/wiki-events.ts    |   103 +
 .../deepagent-code/src/wiki/wiki-service.ts   |    53 +-
 packages/deepagent-code/src/worktree/index.ts |    62 +
 .../test/agent/pr-collaboration.test.ts       |    10 +-
 .../test/cli/goal-worktree.test.ts            |    66 +
 .../__snapshots__/help-snapshots.test.ts.snap |   467 +-
 .../test/cli/help/help-snapshots.test.ts      |    24 +
 .../test/cli/mcp-catalog.test.ts              |    51 +
 .../deepagent-code/test/cli/mcp-edit.test.ts  |   137 +
 .../test/cli/mcp-remove.test.ts               |    88 +
 .../test/cli/query-commands.test.ts           |    86 +
 .../test/cli/run/permission-mode.test.ts      |    83 +
 .../test/cli/run/run-process.test.ts          |    37 +
 .../test/cli/serve/serve-process.test.ts      |    62 +
 .../test/cli/session-rename-archive.test.ts   |    74 +
 .../context-federation/diagnostics.test.ts    |   198 +-
 .../provider-owner-runtime.test.ts            |   209 +-
 .../test/control-plane/workspace.test.ts      |   230 +-
 .../deepagent/learning-lifecycle-e2e.test.ts  |   468 +
 .../test/effect/runtime-flags.test.ts         |    12 -
 ...legacy-event-canonicalizer-runtime.test.ts |   152 +
 .../deepagent-code/test/mcp/headers.test.ts   |     8 +-
 .../deepagent-code/test/mcp/lifecycle.test.ts |     9 +-
 .../test/mcp/oauth-auto-connect.test.ts       |     8 +-
 .../test/mcp/oauth-browser.test.ts            |     8 +-
 .../test/provider/transform.test.ts           |    83 +-
 .../test/script/models-data.test.ts           |    14 +
 .../test/script/release-evidence.test.ts      |   188 +
 .../test/script/run-live-llm-all.test.ts      |    14 +
 .../test/server/httpapi-mdns.test.ts          |     8 +-
 .../test/server/httpapi-packs-events.test.ts  |   259 +
 .../server/httpapi-provider-recovery.test.ts  |   245 +-
 .../test/server/httpapi-sdk.test.ts           |     7 +-
 .../server/httpapi-workspace-routing.test.ts  |     3 +-
 .../server/session-diff-missing-patch.test.ts |    12 +-
 .../session/agent-handoff-consumer.test.ts    |   110 +-
 .../session/bug-008-activity-leak.test.ts     |   565 +
 .../test/session/bug-407-008-runtime.test.ts  |  1745 ++
 .../test/session/compacted-fork.test.ts       |     7 +-
 .../test/session/compaction.test.ts           |   591 +-
 .../test/session/context-window.test.ts       |     5 +-
 .../test/session/diff-artifact.test.ts        |   189 +-
 .../test/session/facade-activity.test.ts      |   491 +
 .../test/session/goal-driver.test.ts          |    28 +
 .../test/session/goal-tick-consumer.test.ts   |    62 +-
 .../test/session/incident-regression.test.ts  |  1607 ++
 .../legacy-provider-resolution.test.ts        |     6 +-
 .../test/session/llm-native.test.ts           |   121 +-
 .../test/session/llm/tool-pairing.test.ts     |   322 +
 .../message-update-event-bytes.test.ts        |   126 +
 .../test/session/messages-pagination.test.ts  |     5 +-
 .../session/multi-process-takeover.test.ts    |   359 +
 .../test/session/processor-effect.test.ts     |    15 +-
 .../test/session/prompt-intent.test.ts        |     4 +-
 .../test/session/prompt.test.ts               |   422 +-
 .../session/provider-receipt-recovery.test.ts |     6 +-
 .../test/session/remote-compact.test.ts       |   374 +
 .../deepagent-code/test/session/retry.test.ts |    88 +
 .../test/session/revert-compact.test.ts       |     4 +
 .../test/session/snapshot-tool-race.test.ts   |    28 +-
 .../deepagent-code/test/session/steer.test.ts |    24 +-
 .../test/session/task-fork.test.ts            |     7 +-
 .../test/session/turn-stage-evidence.test.ts  |   452 +
 .../test/session/v4-integration.test.ts       |     3 +
 .../test/share/share-next.test.ts             |     4 +
 .../snapshot-degraded-attribution.test.ts     |    63 +
 .../test/snapshot/snapshot.test.ts            |    36 +
 .../test/tool/degraded-text-recovery.test.ts  |   312 +
 .../test/tool/output-degeneration.test.ts     |   177 +
 .../test/tool/pr-finalize.test.ts             |     4 +
 .../deepagent-code/test/tool/registry.test.ts |    92 +
 .../test/tool/task-read.test.ts               |     4 +
 .../test/tool/task-recovery.test.ts           |     4 +
 .../test/tool/task-status.test.ts             |     4 +
 .../test/tool/task-takeover.test.ts           |     4 +
 .../test/wiki/wiki-events.test.ts             |   245 +
 packages/desktop/package.json                 |     2 +-
 packages/llm/src/protocols/index.ts           |     1 +
 .../protocols/openai-compatible-responses.ts  |    29 +
 .../llm/src/protocols/openai-responses.ts     |   199 +-
 .../providers/openai-compatible-profile.ts    |    32 +-
 .../llm/src/providers/openai-compatible.ts    |    19 +-
 packages/llm/src/route/executor.ts            |   117 +-
 packages/llm/src/schema/errors.ts             |    20 +-
 packages/llm/src/schema/messages.ts           |    10 +-
 packages/llm/test/executor.test.ts            |   154 +-
 packages/llm/test/exports.test.ts             |     5 +-
 .../test/provider/bug407008-reasoning.test.ts |   456 +
 .../openai-compatible-responses.test.ts       |   145 +
 .../provider/openai-responses-compact.test.ts |   203 +
 .../test/provider/openai-responses.test.ts    |    83 +
 packages/sdk/js/src/gen/sdk.gen.ts            |    95 +
 packages/sdk/js/src/gen/types.gen.ts          |   205 +-
 packages/sdk/js/src/v2/gen/sdk.gen.ts         |    95 +
 packages/sdk/js/src/v2/gen/types.gen.ts       |   205 +-
 packages/ui/src/components/file.tsx           |     5 +
 .../src/components/message-part-chunk.test.ts |    97 +
 .../ui/src/components/message-part-chunk.ts   |    91 +
 packages/ui/src/components/message-part.tsx   |    76 +-
 packages/web/src/content/docs/ar/github.mdx   |    10 +-
 packages/web/src/content/docs/bs/github.mdx   |    10 +-
 packages/web/src/content/docs/da/github.mdx   |    10 +-
 packages/web/src/content/docs/de/github.mdx   |    10 +-
 packages/web/src/content/docs/es/github.mdx   |    10 +-
 packages/web/src/content/docs/fr/github.mdx   |    10 +-
 packages/web/src/content/docs/github.mdx      |    10 +-
 packages/web/src/content/docs/it/github.mdx   |    10 +-
 packages/web/src/content/docs/ja/github.mdx   |    10 +-
 packages/web/src/content/docs/ko/github.mdx   |    10 +-
 packages/web/src/content/docs/nb/github.mdx   |    10 +-
 packages/web/src/content/docs/pl/github.mdx   |    10 +-
 .../web/src/content/docs/pt-br/github.mdx     |    10 +-
 packages/web/src/content/docs/ru/github.mdx   |    10 +-
 packages/web/src/content/docs/th/github.mdx   |    10 +-
 packages/web/src/content/docs/tr/github.mdx   |    10 +-
 .../web/src/content/docs/zh-cn/github.mdx     |    10 +-
 .../web/src/content/docs/zh-tw/github.mdx     |    10 +-
 release-evidence/README.md                    |    77 +
 release-evidence/manifest.schema.json         |   115 +
 .../release-gate-20260819/manifest.json       |    52 +
 .../release-gate-20260820/manifest.json       |    51 +
 script/check-test-fixtures.ts                 |   167 +
 script/live-llm-key-from-auth.ts              |    33 +
 script/release-evidence.ts                    |   534 +
 script/run-live-llm-all.ts                    |    86 +-
 307 files changed, 47201 insertions(+), 1246 deletions(-)
 create mode 100644 packages/app/src/components/dialog-console-account.tsx
 create mode 100644 packages/app/src/context/bug407008-projection.test.ts
 create mode 100644 packages/app/src/pages/session/message-timeline-virtualize.test.ts
 create mode 100644 packages/app/src/pages/session/message-timeline.bug407008.test.ts
 create mode 100644 packages/app/src/pages/session/side-panel-stats.tsx
 create mode 100644 packages/app/src/utils/message-order.test.ts
 create mode 100644 packages/app/src/utils/message-order.ts
 create mode 100644 packages/app/src/utils/session-stats.test.ts
 create mode 100644 packages/app/src/utils/session-stats.ts
 create mode 100644 packages/cli/test/daemon.test.ts
 create mode 100644 packages/cli/test/fixtures/legacy-entry.ts
 create mode 100644 packages/core/migration/20260816073717_session_facade_activity/migration.sql
 create mode 100644 packages/core/migration/20260816073717_session_facade_activity/snapshot.json
 create mode 100644 packages/core/script/release-gate-migration-check.ts
 create mode 100644 packages/core/src/context-federation/reconciliation-sql.ts
 create mode 100644 packages/core/src/context-federation/reconciliation.ts
 create mode 100644 packages/core/src/database/migration/20260815120000_event_delivery_claim_lease.ts
 create mode 100644 packages/core/src/database/migration/20260815130000_event_multiprocess_extensions.ts
 create mode 100644 packages/core/src/database/migration/20260816000000_handoff_admission_receipt.ts
 create mode 100644 packages/core/src/database/migration/20260816073717_session_facade_activity.ts
 create mode 100644 packages/core/src/database/migration/20260816080000_receipt_active_pack_set_attribution.ts
 create mode 100644 packages/core/src/database/migration/20260816081000_session_context_reconciliation.ts
 create mode 100644 packages/core/src/database/migration/20260819120000_session_intent_confirmation_state.ts
 create mode 100644 packages/core/src/database/migration/20260820000000_remote_compact_persistence.ts
 create mode 100644 packages/core/src/database/migration/20260820120000_session_turn_stage_evidence.ts
 create mode 100644 packages/core/src/database/migration/20260820130000_compaction_continuation_fail_closed.ts
 create mode 100644 packages/core/src/deepagent/handoff-admission-sql.ts
 create mode 100644 packages/core/src/deepagent/handoff-admission.ts
 create mode 100644 packages/core/src/deepagent/pinned-packs.ts
 create mode 100644 packages/core/src/deepagent/profile-builder.ts
 create mode 100644 packages/core/src/permission/mutating.ts
 create mode 100644 packages/core/test/compaction-continuation-fail-closed-migration.test.ts
 create mode 100644 packages/core/test/deepagent/activity-authority-facade.test.ts
 create mode 100644 packages/core/test/deepagent/pack-activation-authority.test.ts
 create mode 100644 packages/core/test/deepagent/pinned-packs.test.ts
 create mode 100644 packages/core/test/remote-compact-persistence-migration.test.ts
 create mode 100644 packages/core/test/session-context-reconciliation.test.ts
 create mode 100644 packages/core/test/session-intent-confirmation-state-migration.test.ts
 create mode 100644 packages/core/test/turn-stage-evidence-migration.test.ts
 create mode 100644 packages/deepagent-code/script/live-llm/providers.ts
 create mode 100644 packages/deepagent-code/script/rel-001-drill.ts
 create mode 100644 packages/deepagent-code/script/risk-003-maintenance.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/goal.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/instance-sdk.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/oversight.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/packs.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/panel.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/review.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/run/permission-mode.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/wiki.ts
 create mode 100644 packages/deepagent-code/src/cli/cmd/worktree.ts
 create mode 100644 packages/deepagent-code/src/legacy-event-canonicalizer-runtime.ts
 create mode 100644 packages/deepagent-code/src/session/__tests__/snapshot.test.ts
 create mode 100644 packages/deepagent-code/src/session/facade-activity.ts
 create mode 100644 packages/deepagent-code/src/session/llm/tool-pairing.ts
 create mode 100644 packages/deepagent-code/src/session/remote-compact.ts
 create mode 100644 packages/deepagent-code/src/session/snapshot.ts
 create mode 100644 packages/deepagent-code/src/session/turn-deadline-watchdog.ts
 create mode 100644 packages/deepagent-code/src/session/turn-stage-evidence.sql.ts
 create mode 100644 packages/deepagent-code/src/session/turn-stage-evidence.ts
 create mode 100644 packages/deepagent-code/src/tool/activity_facade.ts
 create mode 100644 packages/deepagent-code/src/wiki/wiki-events.ts
 create mode 100644 packages/deepagent-code/test/cli/goal-worktree.test.ts
 create mode 100644 packages/deepagent-code/test/cli/mcp-catalog.test.ts
 create mode 100644 packages/deepagent-code/test/cli/mcp-edit.test.ts
 create mode 100644 packages/deepagent-code/test/cli/mcp-remove.test.ts
 create mode 100644 packages/deepagent-code/test/cli/query-commands.test.ts
 create mode 100644 packages/deepagent-code/test/cli/run/permission-mode.test.ts
 create mode 100644 packages/deepagent-code/test/cli/session-rename-archive.test.ts
 create mode 100644 packages/deepagent-code/test/deepagent/learning-lifecycle-e2e.test.ts
 create mode 100644 packages/deepagent-code/test/legacy-event-canonicalizer-runtime.test.ts
 create mode 100644 packages/deepagent-code/test/script/release-evidence.test.ts
 create mode 100644 packages/deepagent-code/test/server/httpapi-packs-events.test.ts
 create mode 100644 packages/deepagent-code/test/session/bug-008-activity-leak.test.ts
 create mode 100644 packages/deepagent-code/test/session/bug-407-008-runtime.test.ts
 create mode 100644 packages/deepagent-code/test/session/facade-activity.test.ts
 create mode 100644 packages/deepagent-code/test/session/incident-regression.test.ts
 create mode 100644 packages/deepagent-code/test/session/llm/tool-pairing.test.ts
 create mode 100644 packages/deepagent-code/test/session/message-update-event-bytes.test.ts
 create mode 100644 packages/deepagent-code/test/session/multi-process-takeover.test.ts
 create mode 100644 packages/deepagent-code/test/session/remote-compact.test.ts
 create mode 100644 packages/deepagent-code/test/session/turn-stage-evidence.test.ts
 create mode 100644 packages/deepagent-code/test/snapshot/snapshot-degraded-attribution.test.ts
 create mode 100644 packages/deepagent-code/test/tool/degraded-text-recovery.test.ts
 create mode 100644 packages/deepagent-code/test/tool/output-degeneration.test.ts
 create mode 100644 packages/deepagent-code/test/wiki/wiki-events.test.ts
 create mode 100644 packages/llm/src/protocols/openai-compatible-responses.ts
 create mode 100644 packages/llm/test/provider/bug407008-reasoning.test.ts
 create mode 100644 packages/llm/test/provider/openai-compatible-responses.test.ts
 create mode 100644 packages/llm/test/provider/openai-responses-compact.test.ts
 create mode 100644 packages/ui/src/components/message-part-chunk.test.ts
 create mode 100644 packages/ui/src/components/message-part-chunk.ts
 create mode 100644 release-evidence/README.md
 create mode 100644 release-evidence/manifest.schema.json
 create mode 100644 release-evidence/v4.1/6fa05579a27d7db372da502d112efaab23353d15/release-gate-20260819/manifest.json
 create mode 100644 release-evidence/v4.1/9bad421e500b20cf6948e3b250203722afafbdb0/release-gate-20260820/manifest.json
 create mode 100644 script/check-test-fixtures.ts
 create mode 100644 script/live-llm-key-from-auth.ts
 create mode 100644 script/release-evidence.ts

diff --git a/.github/workflows/deepagent-code.yml b/.github/workflows/deepagent-code.yml
index 9a117e8a..0eab6d2e 100644
--- a/.github/workflows/deepagent-code.yml
+++ b/.github/workflows/deepagent-code.yml
@@ -26,7 +26,7 @@ jobs:
       - uses: ./.github/actions/setup-bun
 
       - name: Run deepagent-code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           DEEPAGENT_CODE_API_KEY: ${{ secrets.DEEPAGENT_CODE_API_KEY }}
           DEEPAGENT_CODE_PERMISSION: '{"bash": "deny"}'
diff --git a/.github/workflows/docs-update.yml b/.github/workflows/docs-update.yml
index d503a9f2..b707db2a 100644
--- a/.github/workflows/docs-update.yml
+++ b/.github/workflows/docs-update.yml
@@ -43,7 +43,7 @@ jobs:
 
       - name: Run deepagent-code
         if: steps.commits.outputs.has_commits == 'true'
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           DEEPAGENT_CODE_API_KEY: ${{ secrets.DEEPAGENT_CODE_API_KEY }}
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3c55bd09..787ade76 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,6 +21,26 @@ env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
+  test-fixture-gate:
+    name: test-fixture-gate
+    # QUAL-003: forbid test fixtures from bypassing the durable session state
+    # machine via direct inserts into authority tables. Pure grep gate, no deps.
+    runs-on: blacksmith-4vcpu-ubuntu-2404
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup Bun
+        uses: ./.github/actions/setup-bun
+
+      - name: Run test fixture gate
+        run: bun script/check-test-fixtures.ts
+
   unit:
     name: unit (${{ matrix.settings.name }})
     strategy:
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index fc9a5279..0e5c3b3b 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -3,8 +3,9 @@ name: typecheck
 on:
   push:
     branches: [dev]
+  # Gate every PR regardless of target branch: the typecheck baseline is easily polluted by stale
+  # worktrees/generated files, so keep it required and branch-agnostic.
   pull_request:
-    branches: [dev]
   workflow_dispatch:
 
 jobs:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11b906cc..49ba7836 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## Desktop 1.4.7 / DeepAgent Core V4.0.8 - Release hardening and data governance
+
+- Recover the two incident sessions through the formal abandoned path with a zero-provider-invocation oracle and fork smoke on production-snapshot copies; fence pre-successor binaries via a protocol-3 database capability so older builds refuse to open databases carrying successor ownership.
+- Fix the desktop startup crash in the session_intent rebuild migration on SQLite 3.51 (node runtime) and retry transient schema-lock failures in the migration runner.
+- Stop the infinite compaction-continuation recovery loop on startup: recovery failures now land fail-closed (pending → failed) through the widened continuation state machine, serialized per session, with warning-level telemetry.
+- Add durable turn stage evidence and a pre-dispatch watchdog for hung activities; order app timelines by (time, id) so wrapped opaque IDs never reorder messages.
+- Persist encrypted remote-compaction content per session and commit remote compaction runs with an opaque blob pointer instead of a text summary, exempt from information-hole validation.
+- Land RISK-003 data governance: runtime diff-artifact capture (staged behind a flag), a legacy event canonicalizer daemon, portable aggregate snapshot bundles, and a gate-ordered maintenance drill that reclaimed hundreds of MiB on production-snapshot copies (33,168 events deleted, VACUUM 5075 → 4311 MiB).
+- Add the release-evidence manifest infrastructure and archive the 2026-08-19/20 release gates; lock REL-002 wire-budget and discovery-budget regressions; retire the legacy activity authority in favor of the durable path.
+- Align Desktop 1.4.7, DeepAgent Core V4.0.8, and GitHub Action `github-v1.4.7` across package metadata, updater tags, and workflow references.
+
 ## Desktop 1.4.5 / DeepAgent Core V4.0.6 - Bounded planning and runtime hardening
 
 - Make compaction durable through explicit run/attempt lifecycle records and Prompt Epoch authority, with bounded text-only summary retries and typed terminal failures.
diff --git a/README.md b/README.md
index 5572d09f..c96e8638 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 
 <p align="center">
   <a href="README.md">English</a> |
-  <a href="README.zh.md">简体中文</a> |
+  <a href="README.zh.md">中文</a> |
   <a href="https://github.com/deepagent-ltd/deepagent-code-enterprise">Enterprise</a>
 </p>
 
diff --git a/github/README.md b/github/README.md
index 949c933d..95d09412 100644
--- a/github/README.md
+++ b/github/README.md
@@ -90,7 +90,7 @@ This will walk you through installing the GitHub app, creating the workflow, and
               persist-credentials: false
 
           - name: Run deepagent-code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
              GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/github/VERSION b/github/VERSION
index e516bb9d..be05bba9 100644
--- a/github/VERSION
+++ b/github/VERSION
@@ -1 +1 @@
-1.4.5
+1.4.7
diff --git a/packages/app/package.json b/packages/app/package.json
index b143030a..cea1b8d1 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@deepagent-code/app",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "description": "",
   "type": "module",
   "exports": {
diff --git a/packages/app/src/components/dialog-console-account.tsx b/packages/app/src/components/dialog-console-account.tsx
new file mode 100644
index 00000000..ed101149
--- /dev/null
+++ b/packages/app/src/components/dialog-console-account.tsx
@@ -0,0 +1,105 @@
+import { createResource, createSignal, type Component, For, Show } from "solid-js"
+import { useDialog } from "@deepagent-code/ui/context/dialog"
+import { Dialog } from "@deepagent-code/ui/dialog"
+import { Spinner } from "@deepagent-code/ui/spinner"
+import { showToast } from "@/utils/toast"
+import { useLanguage } from "@/context/language"
+import { useServerSDK } from "@/context/server-sdk"
+import { useServerSync } from "@/context/server-sync"
+
+// PARITY-004 / GUI 批 — Console 账号接线:消费 /experimental/console/orgs 与 /switch,
+// 列出可切换的 Console 组织并切换活跃组织(server-side truth,见 worklist GUI 批)。
+type Org = {
+  accountID: string
+  accountEmail: string
+  accountUrl: string
+  orgID: string
+  orgName: string
+  active: boolean
+}
+
+export const DialogConsoleAccount: Component = () => {
+  const dialog = useDialog()
+  const language = useLanguage()
+  const serverSDK = useServerSDK()
+  const serverSync = useServerSync()
+  const [switching, setSwitching] = createSignal<string | undefined>()
+
+  const [orgs] = createResource(async () => {
+    const result = await serverSDK.client.experimental.console.listOrgs(undefined, { throwOnError: true })
+    return (result.data?.orgs ?? []) as Org[]
+  })
+
+  const switchOrg = async (org: Org) => {
+    if (switching()) return
+    setSwitching(`${org.accountID}:${org.orgID}`)
+    await serverSDK.client.experimental.console
+      .switchOrg({ accountID: org.accountID, orgID: org.orgID }, { throwOnError: true })
+      .then(() => {
+        serverSync.refreshProviders()
+        showToast({
+          variant: "success",
+          icon: "circle-check",
+          title: language.t("settings.providers.console.switch.toast.title"),
+          description: language.t("settings.providers.console.switch.toast.description", { org: org.orgName }),
+        })
+        dialog.close()
+      })
+      .catch((err: unknown) => {
+        const message = err instanceof Error ? err.message : String(err)
+        showToast({ title: language.t("common.requestFailed"), description: message })
+      })
+      .finally(() => setSwitching(undefined))
+  }
+
+  return (
+    <Dialog title={language.t("settings.providers.console.switchOrg")} transition>
+      <Show
+        when={!orgs.loading}
+        fallback={
+          <div class="flex items-center justify-center py-8">
+            <Spinner />
+          </div>
+        }
+      >
+        <Show
+          when={(orgs() ?? []).length > 0}
+          fallback={
+            <div class="px-4 py-6 text-14-regular text-text-weak">
+              {language.t("settings.providers.console.empty")}
+            </div>
+          }
+        >
+          <div class="flex flex-col px-2 py-1">
+            <For each={orgs() ?? []}>
+              {(org) => {
+                const key = `${org.accountID}:${org.orgID}`
+                return (
+                  <button
+                    type="button"
+                    disabled={!!switching()}
+                    class="flex w-full items-center justify-between gap-3 rounded-md px-3 py-2 text-left hover:bg-fill-weak-base disabled:opacity-60"
+                    onClick={() => void switchOrg(org)}
+                  >
+                    <span class="flex min-w-0 flex-col">
+                      <span class="truncate text-14-medium text-text-strong">{org.orgName}</span>
+                      <span class="truncate text-12-regular text-text-weak">{org.accountEmail}</span>
+                    </span>
+                    <Show when={switching() === key}>
+                      <Spinner />
+                    </Show>
+                    <Show when={org.active && switching() !== key}>
+                      <span class="text-12-medium text-text-interactive-base">
+                        {language.t("common.active")}
+                      </span>
+                    </Show>
+                  </button>
+                )
+              }}
+            </For>
+          </div>
+        </Show>
+      </Show>
+    </Dialog>
+  )
+}
diff --git a/packages/app/src/components/settings-providers.tsx b/packages/app/src/components/settings-providers.tsx
index 07f5da31..32fee603 100644
--- a/packages/app/src/components/settings-providers.tsx
+++ b/packages/app/src/components/settings-providers.tsx
@@ -4,7 +4,7 @@ import { ProviderIcon } from "@deepagent-code/ui/provider-icon"
 import { Tag } from "@deepagent-code/ui/tag"
 import { showToast } from "@/utils/toast"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
-import { createMemo, type Component, For, Show } from "solid-js"
+import { createMemo, createResource, type Component, For, Show } from "solid-js"
 import { createStore } from "solid-js/store"
 import { useLanguage } from "@/context/language"
 import { useServerSDK } from "@/context/server-sdk"
@@ -12,6 +12,7 @@ import { useServerSync } from "@/context/server-sync"
 import { DialogConnectProvider } from "./dialog-connect-provider"
 import { DialogSelectProvider } from "./dialog-select-provider"
 import { DialogCustomProvider } from "./dialog-custom-provider"
+import { DialogConsoleAccount } from "./dialog-console-account"
 import { SettingsList } from "./settings-list"
 import { SettingsServerPicker, SettingsServerScope } from "./settings-server-picker"
 import { canRefreshProviderModels } from "./provider-model-refresh"
@@ -50,6 +51,12 @@ const SettingsProvidersContent: Component = () => {
   const providers = useProviders()
   const [refreshing, setRefreshing] = createStore<Record<string, boolean>>({})
 
+  // PARITY-004 / GUI 批 — Console 账号:消费 /experimental/console,显示活跃组织与可切换数量。
+  const [consoleState] = createResource(async () => {
+    const result = await serverSDK.client.experimental.console.get().catch(() => undefined)
+    return result?.data
+  })
+
   const isConfigCustom = (providerID: string) => {
     const provider = serverSync.data.config.provider?.[providerID]
     if (!provider) return false
@@ -180,6 +187,39 @@ const SettingsProvidersContent: Component = () => {
       </div>
 
       <div class="flex flex-col gap-8 max-w-[720px]">
+        <Show
+          when={(consoleState()?.switchableOrgCount ?? 0) > 0 || (consoleState()?.consoleManagedProviders.length ?? 0) > 0}
+        >
+          <div class="flex flex-col gap-1" data-component="console-account-section">
+            <h3 class="text-14-medium text-text-strong pb-2">
+              {language.t("settings.providers.section.consoleAccount")}
+            </h3>
+            <SettingsList>
+              <div class="flex flex-wrap items-center justify-between gap-4 min-h-16 py-3 border-b border-border-weak-base last:border-none">
+                <div class="flex flex-col min-w-0">
+                  <span class="text-14-medium text-text-strong truncate">
+                    {consoleState()?.activeOrgName ?? language.t("settings.providers.console.noOrg")}
+                  </span>
+                  <span class="text-12-regular text-text-weak">
+                    {language.t("settings.providers.console.managedCount", {
+                      count: consoleState()?.consoleManagedProviders.length ?? 0,
+                    })}
+                  </span>
+                </div>
+                <Button
+                  size="large"
+                  variant="ghost"
+                  onClick={() => {
+                    dialog.show(() => <DialogConsoleAccount />)
+                  }}
+                >
+                  {language.t("settings.providers.console.switchOrg")}
+                </Button>
+              </div>
+            </SettingsList>
+          </div>
+        </Show>
+
         <div class="flex flex-col gap-1" data-component="connected-providers-section">
           <h3 class="text-14-medium text-text-strong pb-2">{language.t("settings.providers.section.connected")}</h3>
           <SettingsList>
diff --git a/packages/app/src/components/settings-v2/import-history.tsx b/packages/app/src/components/settings-v2/import-history.tsx
index a351bfe7..759c16f6 100644
--- a/packages/app/src/components/settings-v2/import-history.tsx
+++ b/packages/app/src/components/settings-v2/import-history.tsx
@@ -10,7 +10,7 @@ import { SettingsListV2 } from "./parts/list"
 import { SettingsRowV2 } from "./parts/row"
 import "./settings-v2.css"
 
-type SourceFormat = "codex" | "claude"
+type SourceFormat = "codex" | "claude" | "deepagent"
 type SourceMode = SourceFormat | "custom"
 type Scope = "session" | "memory" | "skill"
 type ProgressEvent =
@@ -90,6 +90,7 @@ export const ImportSection: Component = () => {
   const [dryRun, setDryRun] = createSignal(false)
   const [copyLiveDb, setCopyLiveDb] = createSignal(true)
   const [cwdFilter, setCwdFilter] = createSignal("")
+  const [snapshotFile, setSnapshotFile] = createSignal<File | undefined>(undefined)
   const [running, setRunning] = createSignal(false)
   const [logs, setLogs] = createSignal<string[]>([])
   const [summary, setSummary] = createSignal<string>("")
@@ -113,6 +114,7 @@ export const ImportSection: Component = () => {
   const modeOptions = createMemo(() => [
     { value: "codex" as const, label: t("settings.import.preset.codex", "Codex") },
     { value: "claude" as const, label: t("settings.import.preset.claude", "Claude Code") },
+    { value: "deepagent" as const, label: t("settings.import.preset.deepagent", "DeepAgent Code (snapshot)") },
     { value: "custom" as const, label: t("settings.import.preset.custom", "Custom") },
   ])
   const formatOptions = createMemo(() => [
@@ -125,6 +127,42 @@ export const ImportSection: Component = () => {
     { id: "skill", icon: "bookmark" },
   ]
 
+  // DeepAgent Code snapshot import: read the chosen bundle file and POST it to
+  // /session/import-snapshot (server rebuilds a fresh, continuable session).
+  const runSnapshotImport = async (h: HttpBase | undefined) => {
+    try {
+      const file = snapshotFile()
+      if (!file) {
+        push(`  [error] ${t("settings.import.snapshot.noFile", "Choose a snapshot bundle file first")}`)
+        return
+      }
+      const bundle = await file.text()
+      const res = await fetch(`${h?.url ?? ""}/session/import-snapshot`, {
+        method: "POST",
+        headers: { "content-type": "application/json", ...authHeader(h) },
+        body: JSON.stringify({ bundle }),
+        signal: abort?.signal,
+      })
+      if (!res.ok) {
+        const text = await res.text().catch(() => res.statusText)
+        push(`  [error] HTTP ${res.status}: ${text.slice(0, 200)}`)
+        return
+      }
+      const result = (await res.json().catch(() => undefined)) as
+        | { sessionID?: string; messages?: number; parts?: number }
+        | undefined
+      push(
+        `  [session] imported ${result?.sessionID?.slice(0, 16) ?? ""}… · ${result?.messages ?? 0} messages · ${result?.parts ?? 0} parts`,
+      )
+      setSummary(t("settings.import.snapshot.done", "Snapshot imported as a new continuable session"))
+    } catch (err) {
+      const message = err instanceof Error ? err.message : String(err)
+      push(`  [error] ${message}`)
+    } finally {
+      setRunning(false)
+    }
+  }
+
   const run = async () => {
     if (running()) return
     setLogs([])
@@ -134,6 +172,10 @@ export const ImportSection: Component = () => {
     const h = http()
     const src = format()
     push(`→ ${src}${mode() === "custom" ? ` (custom: ${sourcePath() || "default"})` : ` (default)`} · scopes: ${scopes().join(",")}${dryRun() ? " · dry-run" : ""}`)
+    if (src === "deepagent") {
+      await runSnapshotImport(h)
+      return
+    }
     try {
       await streamImport(
         h?.url ?? "",
@@ -218,6 +260,29 @@ export const ImportSection: Component = () => {
           />
         </SettingsRowV2>
 
+        <Show when={mode() === "deepagent"}>
+          <SettingsRowV2
+            title={t("settings.import.snapshot.file", "Snapshot bundle")}
+            description={t(
+              "settings.import.snapshot.file.hint",
+              "Choose an exported session snapshot bundle (.json). It imports as a new continuable session.",
+            )}
+          >
+            <div class="flex flex-col gap-2 w-full sm:w-[260px]">
+              <input
+                data-action="settings-import-snapshot-file"
+                type="file"
+                accept=".json,application/json"
+                disabled={running()}
+                onChange={(e) => setSnapshotFile(e.currentTarget.files?.[0])}
+              />
+              <Show when={snapshotFile()}>
+                {(file) => <span class="text-12-regular text-text-weak truncate">{file().name}</span>}
+              </Show>
+            </div>
+          </SettingsRowV2>
+        </Show>
+
         <Show when={mode() === "custom"}>
           <SettingsRowV2 title={t("settings.import.customPath", "Path")} description={t("settings.import.customPath.hint", "Absolute path to the agent data directory.")}>
             <div class="flex flex-col gap-2 w-full sm:w-[260px]">
diff --git a/packages/app/src/context/bug407008-projection.test.ts b/packages/app/src/context/bug407008-projection.test.ts
new file mode 100644
index 00000000..486f9425
--- /dev/null
+++ b/packages/app/src/context/bug407008-projection.test.ts
@@ -0,0 +1,435 @@
+/**
+ * BUG-407-008 — spec §7.2 App projection deterministic regression tests (scenarios 20-25,
+ * sync/reducer layer). Harness style mirrors ./global-sync/event-reducer.test.ts and
+ * ./directory-sync.test.ts.
+ *
+ * Covered layers:
+ *  - `mergeMessage` / `applyDirectoryEvent` (packages/app/src/context/global-sync/event-reducer.ts)
+ *    — Fix-D server-owned marker monotonicity + conflict → refetchSession.
+ *  - `runInflight` (packages/app/src/context/directory-sync.ts) — keyed trailing forced sync.
+ *  - `createDirSyncContext` pagination — deterministic convergence across page order/refresh.
+ *
+ * Implementation note: the working tree carries a BUG-005 change that classifies a same-activity
+ * revision mismatch as staleness (keep the higher revision, no conflict, no forced reload). Tests
+ * below pin that actual semantics and annotate where it differs from earlier behavior.
+ */
+import { describe, expect, test } from "bun:test"
+import { createRoot } from "solid-js"
+import { createStore, type SetStoreFunction, type Store } from "solid-js/store"
+import type { Message } from "@deepagent-code/sdk/v2/client"
+import { ServerScope } from "@/utils/server-scope"
+import type { State } from "./global-sync/types"
+import { applyDirectoryEvent } from "./global-sync/event-reducer"
+import { createDirSyncContext, runInflight } from "./directory-sync"
+
+type AssistantMessage = Extract<Message, { role: "assistant" }>
+
+const baseState = (input: Partial<State> = {}) =>
+  ({
+    status: "complete",
+    agent: [],
+    command: [],
+    project: "",
+    projectMeta: undefined,
+    icon: undefined,
+    provider: {} as State["provider"],
+    config: {} as State["config"],
+    path: { directory: "/tmp" } as State["path"],
+    session: [],
+    sessionTotal: 0,
+    session_status: {},
+    session_diff: {},
+    todo: {},
+    permission: {},
+    question: {},
+    mcp: {},
+    lsp: [],
+    vcs: undefined,
+    limit: 10,
+    message: {},
+    part: {},
+    part_text_accum_delta: {},
+    ...input,
+  }) as State
+
+const assistantMessage = (
+  id: string,
+  sessionID: string,
+  activityProgress?: AssistantMessage["activityProgress"],
+) =>
+  ({
+    id,
+    sessionID,
+    role: "assistant",
+    parentID: "msg_user",
+    time: { created: 1 },
+    modelID: "gpt",
+    providerID: "openai",
+    mode: "build",
+    agent: "assistant",
+    path: { cwd: "/tmp", root: "/tmp" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    activityProgress,
+  }) as AssistantMessage
+
+const INCIDENT_ACTIVITY = "a6d06b2a82ef234ab9dc71e3fd940292a21b34f4732f28aa19ba8416c4c5e5a9"
+
+const applyMessageUpdated = (
+  store: Store<State>,
+  setStore: SetStoreFunction<State>,
+  info: Message,
+  refetchSession?: (sessionID: string) => void,
+) =>
+  applyDirectoryEvent({
+    event: { type: "message.updated", properties: { info } },
+    store,
+    setStore,
+    push() {},
+    directory: "/tmp",
+    loadLsp() {},
+    ...(refetchSession ? { refetchSession } : {}),
+  })
+
+const firstAssistant = (store: State, sessionID: string) =>
+  store.message[sessionID]?.[0] as AssistantMessage | undefined
+
+describe("BUG-407-008 §7.2 App projection — reducer monotonicity (scenarios 20-22)", () => {
+  test("20: revision 8 arrives via SSE first, revision 9 after — latest revision 9 is established", () => {
+    const sessionID = "ses_0149b8afffffWlu80cVGdzFI9s"
+    const [store, setStore] = createStore(baseState())
+
+    // revision 8's owning assistant message arrives first over the realtime stream.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage("msg_incident_r8", sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 8,
+        state: "progress",
+      }),
+    )
+    // revision 9's owning assistant message arrives afterwards.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage("msg_incident_r9", sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 9,
+        state: "progress",
+      }),
+    )
+
+    // Both owning messages coexist in the store with their server-owned markers intact; the
+    // "only revision 9 is visible" contract is a timeline-layer selection (Fix-E). Fix-E was
+    // removed in commit 1ae96499 — see message-timeline.bug407008.test.ts scenario 18 for the
+    // pinned actual timeline behavior. At the store layer the latest revision is well-defined:
+    expect(store.message[sessionID]?.map((m) => m.id)).toEqual(["msg_incident_r8", "msg_incident_r9"])
+    expect((store.message[sessionID]?.[0] as AssistantMessage).activityProgress?.revision).toBe(8)
+    expect((store.message[sessionID]?.[1] as AssistantMessage).activityProgress?.revision).toBe(9)
+  })
+
+  test("21: revision 9 first, out-of-order revision 8 after — no regression to revision 8", () => {
+    const sessionID = "ses_1"
+    const current = assistantMessage("msg_assistant", sessionID, {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 9,
+      state: "progress",
+    })
+    const [store, setStore] = createStore(baseState({ message: { [sessionID]: [current] } }))
+    const refreshed: string[] = []
+
+    // A stale event/page replays the SAME owning message with the older revision 8.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage(current.id, sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 8,
+        state: "progress",
+      }),
+      (id) => refreshed.push(id),
+    )
+
+    // The store never regresses to revision 8 ...
+    expect(firstAssistant(store, sessionID)?.activityProgress?.revision).toBe(9)
+    expect(firstAssistant(store, sessionID)?.activityProgress?.activityID).toBe(INCIDENT_ACTIVITY)
+    // ... and, per the working-tree BUG-005 semantics, a same-activity revision mismatch is
+    // treated as staleness: it keeps the higher revision WITHOUT escalating to a forced session
+    // reload. (Before BUG-005 this same event was a conflict that triggered refetchSession.)
+    expect(refreshed).toEqual([])
+  })
+
+  test("22: after a terminal marker, marker-less or stale progress events cannot clear or downgrade it", () => {
+    const sessionID = "ses_1"
+    const terminal = assistantMessage("msg_assistant", sessionID, {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 10,
+      state: "interrupted",
+      terminalReason: "user_abort",
+    })
+    const [store, setStore] = createStore(baseState({ message: { [sessionID]: [terminal] } }))
+    const refreshed: string[] = []
+    const refetch = (id: string) => refreshed.push(id)
+
+    // (a) A late ordinary update WITHOUT any marker must not clear the terminal marker.
+    applyMessageUpdated(store, setStore, { ...terminal, activityProgress: undefined }, refetch)
+    expect(firstAssistant(store, sessionID)?.activityProgress).toEqual(terminal.activityProgress)
+
+    // (b) A stale event replaying the same revision as non-terminal `progress` must not downgrade.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage(terminal.id, sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 10,
+        state: "progress",
+      }),
+      refetch,
+    )
+    expect(firstAssistant(store, sessionID)?.activityProgress?.state).toBe("interrupted")
+    expect(firstAssistant(store, sessionID)?.activityProgress?.terminalReason).toBe("user_abort")
+
+    // (c) An even older revision's progress event cannot displace the terminal revision either.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage(terminal.id, sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 8,
+        state: "progress",
+      }),
+      refetch,
+    )
+    expect(firstAssistant(store, sessionID)?.activityProgress?.revision).toBe(10)
+    expect(firstAssistant(store, sessionID)?.activityProgress?.state).toBe("interrupted")
+    // None of these are integrity conflicts, so no forced reload is requested.
+    expect(refreshed).toEqual([])
+  })
+})
+
+describe("BUG-407-008 §7.2 App projection — trailing forced sync (scenarios 23-24)", () => {
+  test("23: conflict during an in-flight ordinary sync keeps canonical and runs one trailing forced sync after commit", async () => {
+    const sessionID = "ses_1"
+    const canonical = assistantMessage("msg_assistant", sessionID, {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 9,
+      state: "progress",
+    })
+    const [store, setStore] = createStore(baseState({ message: { [sessionID]: [canonical] } }))
+
+    // Simulated durable read source: the authority commit flips this flag while the ordinary
+    // sync is still in flight; only the trailing forced sync may observe the committed state.
+    let authorityCommitted = false
+    const reads: Array<{ run: number; sawCommittedState: boolean }> = []
+    let runs = 0
+    let gate: (() => void) | undefined
+    const task = async () => {
+      runs += 1
+      const run = runs
+      // The read happens at sync start — the ordinary sync reads BEFORE the authority commit,
+      // while the trailing forced sync reads after it.
+      reads.push({ run, sawCommittedState: authorityCommitted })
+      if (run === 1) {
+        // The ordinary sync is still in flight when the conflict arrives.
+        await new Promise<void>((resolve) => {
+          gate = resolve
+        })
+      }
+    }
+
+    const inflight = new Map<string, Promise<void>>()
+    const trailing = new Set<string>()
+    let forced: Promise<void> | undefined
+    // Mirrors directory-sync wiring: refetchSession -> session.sync(sessionID, { force: true }),
+    // implemented via keyed runInflight so a forced call during an in-flight sync becomes a
+    // trailing forced sync instead of being swallowed.
+    const refetchSession = (id: string) => {
+      forced = runInflight(inflight, trailing, id, true, task)
+    }
+
+    const ordinary = runInflight(inflight, trailing, sessionID, false, task)
+    await Promise.resolve()
+    expect(runs).toBe(1)
+
+    // Authority commit happens, then the conflicting marker event arrives mid-flight.
+    applyMessageUpdated(
+      store,
+      setStore,
+      assistantMessage(canonical.id, sessionID, {
+        activityID: "activity-other",
+        revision: 0,
+        state: "final",
+      }),
+      refetchSession,
+    )
+
+    // Canonical marker is preserved against the conflicting incoming marker ...
+    expect(firstAssistant(store, sessionID)?.activityProgress).toEqual(canonical.activityProgress)
+    // ... and the conflict requested a refetch that was queued, not executed yet.
+    expect(forced).toBeDefined()
+    expect(runs).toBe(1)
+    expect(trailing.has(sessionID)).toBe(true)
+
+    // The authority commit lands while the ordinary sync is still running.
+    authorityCommitted = true
+    gate?.()
+    await ordinary
+    await forced
+
+    // Exactly one trailing forced sync ran, and its read happened AFTER the commit.
+    expect(runs).toBe(2)
+    expect(reads).toEqual([
+      { run: 1, sawCommittedState: false },
+      { run: 2, sawCommittedState: true },
+    ])
+    expect(trailing.size).toBe(0)
+  })
+
+  test("24: multiple conflicts in the same window coalesce into exactly one trailing forced sync, no loop", async () => {
+    const sessionID = "ses_1"
+    let runs = 0
+    let gate: (() => void) | undefined
+    const task = async () => {
+      runs += 1
+      if (runs === 1) {
+        await new Promise<void>((resolve) => {
+          gate = resolve
+        })
+      }
+    }
+    const inflight = new Map<string, Promise<void>>()
+    const trailing = new Set<string>()
+
+    // Ordinary sync already in flight ...
+    const ordinary = runInflight(inflight, trailing, sessionID, false, task)
+    await Promise.resolve()
+    expect(runs).toBe(1)
+
+    // ... then the SAME session receives several marker conflicts inside that window. Each one
+    // asks for a forced refetch (as applyDirectoryEvent would via refetchSession).
+    const forced = [
+      runInflight(inflight, trailing, sessionID, true, task),
+      runInflight(inflight, trailing, sessionID, true, task),
+      runInflight(inflight, trailing, sessionID, true, task),
+    ]
+    await Promise.resolve()
+    // The in-flight ordinary Promise must not swallow them: a trailing run is armed.
+    expect(trailing.has(sessionID)).toBe(true)
+    expect(runs).toBe(1)
+
+    gate?.()
+    await Promise.all([ordinary, ...forced])
+
+    // Exactly ONE trailing forced sync executed (ordinary + trailing = 2 runs total).
+    expect(runs).toBe(2)
+    expect(trailing.size).toBe(0)
+
+    // No retry loop: after settling, nothing else runs.
+    for (let attempt = 0; attempt < 50; attempt += 1) await Promise.resolve()
+    expect(runs).toBe(2)
+    expect(trailing.size).toBe(0)
+  })
+})
+
+describe("BUG-407-008 §7.2 App projection — pagination determinism (scenario 25)", () => {
+  test("25: newest-first paging, refresh and reconnect all converge to the same projection", async () => {
+    await createRoot(async (dispose) => {
+      const sessionID = "ses_0149b8afffffWlu80cVGdzFI9s"
+      const newest = assistantMessage("msg_incident_new", sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 9,
+        state: "progress",
+      })
+      const older = assistantMessage("msg_incident_old", sessionID, {
+        activityID: INCIDENT_ACTIVITY,
+        revision: 8,
+        state: "progress",
+      })
+
+      const state = () =>
+        createStore({
+          path: { directory: "/repo" },
+          session: [] as Array<{ id: string }>,
+          mcp: {},
+          message: {} as Record<string, Message[] | undefined>,
+          part: {} as Record<string, unknown[] | undefined>,
+          part_text_accum_delta: {} as Record<string, string | undefined>,
+          todo: {} as Record<string, unknown[] | undefined>,
+          session_diff: {} as Record<string, unknown[] | undefined>,
+          session_status: {} as Record<string, unknown | undefined>,
+          permission: {} as Record<string, unknown[] | undefined>,
+          question: {} as Record<string, unknown[] | undefined>,
+        })
+      const current = state()
+      const serverSync = {
+        child() {
+          return current
+        },
+        plan: {
+          async sync() {},
+        },
+      } as unknown as Parameters<typeof createDirSyncContext>[1]
+
+      let messageCalls = 0
+      const sync = createDirSyncContext("/repo/main", serverSync, {
+        scope: ServerScope.local,
+        createClient() {
+          return {
+            session: {
+              async get() {
+                return { data: { id: sessionID } }
+              },
+              // Durable authority: the newest page (revision 9) is served first with a cursor to
+              // the older page (revision 8); the older page has no further cursor.
+              async messages(input: { limit: number; before?: string }) {
+                messageCalls += 1
+                if (input.before === "cursor-old") {
+                  return { data: [{ info: older, parts: [] }], response: { headers: new Headers() } }
+                }
+                return {
+                  data: [{ info: newest, parts: [] }],
+                  response: { headers: new Headers({ "x-next-cursor": "cursor-old" }) },
+                }
+              },
+            },
+          }
+        },
+      } as unknown as Parameters<typeof createDirSyncContext>[2])
+
+      const snapshot = () =>
+        JSON.parse(
+          JSON.stringify(
+            (current[0].message[sessionID] ?? []).map((message) => ({
+              id: message.id,
+              progress: message.role === "assistant" ? message.activityProgress ?? null : null,
+            })),
+          ),
+        )
+
+      current[1]("session", [current[0].session.length], { id: sessionID })
+
+      // Pass 1: load the newest page first, then page backwards to the older page.
+      await sync.session.sync(sessionID)
+      await sync.session.history.loadMore(sessionID)
+      const afterPaging = snapshot()
+      expect(afterPaging).toEqual([
+        { id: newest.id, progress: newest.activityProgress },
+        { id: older.id, progress: older.activityProgress },
+      ])
+
+      // Pass 2: refresh/reconnect — evict all in-memory caches and rebuild from HTTP pages.
+      sync.session.evict(sessionID)
+      expect(current[0].message[sessionID]).toBeUndefined()
+      await sync.session.sync(sessionID, { force: true })
+      await sync.session.history.loadMore(sessionID)
+      const afterReconnect = snapshot()
+
+      // Identical projection regardless of page arrival order and cache state.
+      expect(afterReconnect).toEqual(afterPaging)
+      // Both pages were served twice (newest + older per pass); nothing else was fetched.
+      expect(messageCalls).toBe(4)
+      dispose()
+    })
+  })
+})
diff --git a/packages/app/src/context/directory-sync.test.ts b/packages/app/src/context/directory-sync.test.ts
index 0791d8ab..5f5baaf6 100644
--- a/packages/app/src/context/directory-sync.test.ts
+++ b/packages/app/src/context/directory-sync.test.ts
@@ -3,7 +3,7 @@ import { createRoot } from "solid-js"
 import { createStore } from "solid-js/store"
 import type { Message, Part } from "@deepagent-code/sdk/v2/client"
 import { ServerScope } from "@/utils/server-scope"
-import { createDirSyncContext, runInflight } from "./directory-sync"
+import { applyOptimisticAdd, createDirSyncContext, mergeOptimisticPage, runInflight } from "./directory-sync"
 
 const state = () =>
   createStore({
@@ -412,6 +412,76 @@ describe("directory optimistic targeting", () => {
     if (result?.role === "assistant") expect(result.activityProgress).toEqual(canonical)
   })
 
+  test("conflict recovery refetches only the authoritative tail, not the whole session", async () => {
+    let messageCalls = 0
+    let sessionGetCalls = 0
+    const messageRequests: Array<{ limit: number; before?: string }> = []
+    let forcedStarted: (() => void) | undefined
+    const current = state()
+    const initial = { activityID: "activity-1", revision: 1, state: "progress" as const }
+    const canonical = { activityID: "activity-1", revision: 2, state: "final" as const }
+    const serverSync = {
+      child() {
+        return current
+      },
+      plan: {
+        async sync() {},
+      },
+    } as unknown as Parameters<typeof createDirSyncContext>[1]
+    const sync = createDirSyncContext("/repo/main", serverSync, {
+      scope: ServerScope.local,
+      createClient() {
+        return {
+          session: {
+            async get() {
+              sessionGetCalls += 1
+              return { data: { id: "ses_1" } }
+            },
+            async messages(input: { limit: number; before?: string }) {
+              messageCalls += 1
+              messageRequests.push({ limit: input.limit, before: input.before })
+              if (messageCalls === 3) forcedStarted?.()
+              const marker =
+                messageCalls === 2
+                  ? { activityID: "activity-conflict", revision: 0, state: "progress" as const }
+                  : messageCalls === 3
+                    ? canonical
+                    : initial
+              return {
+                data: [{ info: assistantMessage("msg_assistant", "ses_1", marker), parts: [] }],
+                response: { headers: new Headers(messageCalls === 1 ? { "x-next-cursor": "older" } : {}) },
+              }
+            },
+          },
+        }
+      },
+    } as unknown as Parameters<typeof createDirSyncContext>[2])
+    const sessionID = "ses_1"
+    current[1]("session", [current[0].session.length], { id: sessionID })
+    await sync.session.sync(sessionID, { force: true })
+
+    const forced = new Promise<void>((resolve) => {
+      forcedStarted = resolve
+    })
+    await sync.session.history.loadMore(sessionID)
+    await forced
+
+    expect(messageCalls).toBe(3)
+    // BUG-005 degradation: the recovery is a BOUNDED authoritative TAIL refetch (newest page, no
+    // `before`), NOT a full-session force reload — a full reload would re-fetch the session header.
+    expect(messageRequests[2]?.before).toBeUndefined()
+    expect(messageRequests[2]?.limit).toBeLessThanOrEqual(80)
+    expect(sessionGetCalls).toBe(1)
+    for (let attempt = 0; attempt < 10; attempt += 1) {
+      const message = current[0].message[sessionID]?.[0]
+      if (message?.role === "assistant" && message.activityProgress?.revision === canonical.revision) break
+      await Promise.resolve()
+    }
+    const result = current[0].message[sessionID]?.[0]
+    expect(result?.role).toBe("assistant")
+    if (result?.role === "assistant") expect(result.activityProgress).toEqual(canonical)
+  })
+
   test("does not let an older forced response overwrite a marker received during the request", async () => {
     let release: (() => void) | undefined
     const current = state()
@@ -595,6 +665,105 @@ describe("directory optimistic targeting", () => {
   })
 })
 
+describe("directory sync across the ID time wrap (BUG-407-012 root cause B)", () => {
+  // The 26th wrap of the 6-byte ID time field happened on 2026-08-14: the chronologically NEWER
+  // message carries a lexicographically SMALLER ID. These fixtures mirror the incident session.
+  const WRAP_OLD_ID = "msg_ffa88f0840015Xj7vIrcdNEJJB" // 2026-08-13 17:51:46
+  const WRAP_NEW_ID = "msg_00d62a3c4001KqYw3o8wBBH6qm" // 2026-08-17 09:42:43
+  const WRAP_OLD_TIME = 1786614706000
+  const WRAP_NEW_TIME = 1786930963000
+  const WRAP_OLD_PART = "prt_ffa88f084001aaaa"
+  const WRAP_NEW_PART = "prt_00d62a3c4001bbbb"
+
+  const wrapUserMessage = (id: string, sessionID: string, created: number): Message => ({
+    id,
+    sessionID,
+    role: "user",
+    time: { created },
+    agent: "assistant",
+    model: { providerID: "openai", modelID: "gpt" },
+  })
+
+  const wrapTextPart = (id: string, sessionID: string, messageID: string, start: number): Part =>
+    ({
+      id,
+      sessionID,
+      messageID,
+      type: "text",
+      text: id,
+      time: { start },
+    }) as Part
+
+  test("mergeOptimisticPage appends a wrapped newer optimistic message at the timeline tail", () => {
+    expect(WRAP_NEW_ID < WRAP_OLD_ID).toBe(true) // sanity: raw ID order is reversed
+    const older = wrapUserMessage(WRAP_OLD_ID, "ses_1", WRAP_OLD_TIME)
+    const newer = wrapUserMessage(WRAP_NEW_ID, "ses_1", WRAP_NEW_TIME)
+
+    const merged = mergeOptimisticPage({ session: [older], part: [], complete: true }, [{ message: newer, parts: [] }])
+
+    expect(merged.session.map((message) => message.id)).toEqual([WRAP_OLD_ID, WRAP_NEW_ID])
+  })
+
+  test("applyOptimisticAdd inserts a wrapped newer message after the older msg_ff... one", () => {
+    const older = wrapUserMessage(WRAP_OLD_ID, "ses_1", WRAP_OLD_TIME)
+    const newer = wrapUserMessage(WRAP_NEW_ID, "ses_1", WRAP_NEW_TIME)
+    const draft = { message: { ses_1: [older] }, part: {} } as {
+      message: Record<string, Message[] | undefined>
+      part: Record<string, Part[] | undefined>
+    }
+
+    applyOptimisticAdd(draft, { sessionID: "ses_1", message: newer, parts: [] })
+
+    expect(draft.message.ses_1?.map((message) => message.id)).toEqual([WRAP_OLD_ID, WRAP_NEW_ID])
+  })
+
+  test("a synced page keeps the server (time_created, id) order across the wrap", async () => {
+    const older = wrapUserMessage(WRAP_OLD_ID, "ses_1", WRAP_OLD_TIME)
+    const newer = wrapUserMessage(WRAP_NEW_ID, "ses_1", WRAP_NEW_TIME)
+    // Deliberately hand the page back-to-front plus a wrapped part pair in reversed order: the
+    // client-side re-sort must land on chronological order, not ID order.
+    const oldPart = wrapTextPart(WRAP_OLD_PART, "ses_1", WRAP_NEW_ID, WRAP_OLD_TIME)
+    const newPart = wrapTextPart(WRAP_NEW_PART, "ses_1", WRAP_NEW_ID, WRAP_NEW_TIME)
+    const current = state()
+    const serverSync = {
+      child() {
+        return current
+      },
+      plan: {
+        async sync() {},
+      },
+    } as unknown as Parameters<typeof createDirSyncContext>[1]
+    const sync = createDirSyncContext("/repo/main", serverSync, {
+      scope: ServerScope.local,
+      createClient() {
+        return {
+          session: {
+            async get() {
+              return { data: { id: "ses_1" } }
+            },
+            async messages() {
+              return {
+                data: [
+                  { info: older, parts: [] },
+                  { info: newer, parts: [newPart, oldPart] },
+                ],
+                response: { headers: new Headers() },
+              }
+            },
+          },
+        }
+      },
+    } as unknown as Parameters<typeof createDirSyncContext>[2])
+    const sessionID = "ses_1"
+    current[1]("session", [current[0].session.length], { id: sessionID })
+
+    await sync.session.sync(sessionID)
+
+    expect(current[0].message[sessionID]?.map((message) => message.id)).toEqual([WRAP_OLD_ID, WRAP_NEW_ID])
+    expect(current[0].part[WRAP_NEW_ID]?.map((part) => part.id)).toEqual([WRAP_OLD_PART, WRAP_NEW_PART])
+  })
+})
+
 describe("directory forced session synchronization", () => {
   test("runs one trailing forced refresh after an ordinary refresh completes", async () => {
     const inflight = new Map<string, Promise<void>>()
diff --git a/packages/app/src/context/directory-sync.ts b/packages/app/src/context/directory-sync.ts
index d6bc4a94..d223d515 100644
--- a/packages/app/src/context/directory-sync.ts
+++ b/packages/app/src/context/directory-sync.ts
@@ -12,6 +12,13 @@ import {
 import type { Message, Part } from "@deepagent-code/sdk/v2/client"
 import { SESSION_CACHE_LIMIT, dropSessionCaches, pickSessionCacheEvictions } from "./global-sync/session-cache"
 import { diffs as list, message as clean } from "@/utils/diffs"
+import {
+  compareMessages,
+  compareParts,
+  findMessageIndex,
+  locateMessage,
+  locatePart,
+} from "@/utils/message-order"
 import { createServerSdkContext, useServerSDK } from "./server-sdk"
 import { type createServerSyncContextInner } from "./server-sync"
 import { promptAdmissionClientMessageID } from "./global-sync/prompt-admission"
@@ -20,8 +27,10 @@ import { mergeMessage } from "./global-sync/event-reducer"
 const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
 type ActivityProgress = NonNullable<Extract<Message, { role: "assistant" }>["activityProgress"]>
 
+// BUG-407-012 root cause B: ID order is not chronological order across the 6-byte ID time wrap;
+// parts sort by (time.start, id), messages by (time.created, id). See utils/message-order.ts.
 function sortParts(parts: Part[]) {
-  return parts.filter((part) => !!part?.id).sort((a, b) => cmp(a.id, b.id))
+  return parts.filter((part) => !!part?.id).sort((a, b) => compareParts(a, b))
 }
 
 export async function runInflight(
@@ -87,7 +96,7 @@ function mergePageMessages(
     conflict ||= result.conflict
   }
   return {
-    messages: [...messages.values()].sort((a, b) => cmp(a.id, b.id)),
+    messages: [...messages.values()].sort((a, b) => compareMessages(a, b)),
     conflict,
   }
 }
@@ -142,7 +151,7 @@ type MessagePage = {
 
 const hasParts = (parts: Part[] | undefined, want: Part[]) => {
   if (!parts) return want.length === 0
-  return want.every((part) => Binary.search(parts, part.id, (item) => item.id).found)
+  return want.every((part) => locatePart(parts, part).found)
 }
 
 const mergeParts = (parts: Part[] | undefined, want: Part[]) => {
@@ -150,7 +159,7 @@ const mergeParts = (parts: Part[] | undefined, want: Part[]) => {
   const next = [...parts]
   let changed = false
   for (const part of want) {
-    const result = Binary.search(next, part.id, (item) => item.id)
+    const result = locatePart(next, part)
     if (result.found) continue
     next.splice(result.index, 0, part)
     changed = true
@@ -180,7 +189,7 @@ export function mergeOptimisticPage(page: MessagePage, items: OptimisticItem[])
       part.delete(item.message.id)
       continue
     }
-    const result = Binary.search(session, item.message.id, (message) => message.id)
+    const result = locateMessage(session, item.message)
     const found = result.found
     if (!found) session.splice(result.index, 0, item.message)
 
@@ -209,7 +218,7 @@ export function applyOptimisticAdd(draft: OptimisticStore, input: OptimisticAddI
     return
   }
   if (messages) {
-    const result = Binary.search(messages, input.message.id, (m) => m.id)
+    const result = locateMessage(messages, input.message)
     if (result.found) messages[result.index] = input.message
     else messages.splice(result.index, 0, input.message)
   } else {
@@ -221,8 +230,8 @@ export function applyOptimisticAdd(draft: OptimisticStore, input: OptimisticAddI
 export function applyOptimisticRemove(draft: OptimisticStore, input: OptimisticRemoveInput) {
   const messages = draft.message[input.sessionID]
   if (messages) {
-    const result = Binary.search(messages, input.messageID, (m) => m.id)
-    if (result.found) messages.splice(result.index, 1)
+    const index = findMessageIndex(messages, input.messageID)
+    if (index !== -1) messages.splice(index, 1)
   }
   delete draft.part[input.messageID]
 }
@@ -230,7 +239,7 @@ export function applyOptimisticRemove(draft: OptimisticStore, input: OptimisticR
 function setOptimisticAdd(setStore: (...args: unknown[]) => void, input: OptimisticAddInput) {
   setStore("message", input.sessionID, (messages: Message[] | undefined) => {
     if (!messages) return [input.message]
-    const result = Binary.search(messages, input.message.id, (m) => m.id)
+    const result = locateMessage(messages, input.message)
     const next = [...messages]
     if (result.found) next[result.index] = input.message
     else next.splice(result.index, 0, input.message)
@@ -242,10 +251,10 @@ function setOptimisticAdd(setStore: (...args: unknown[]) => void, input: Optimis
 function setOptimisticRemove(setStore: (...args: unknown[]) => void, input: OptimisticRemoveInput) {
   setStore("message", input.sessionID, (messages: Message[] | undefined) => {
     if (!messages) return messages
-    const result = Binary.search(messages, input.messageID, (m) => m.id)
-    if (!result.found) return messages
+    const index = findMessageIndex(messages, input.messageID)
+    if (index === -1) return messages
     const next = [...messages]
-    next.splice(result.index, 1)
+    next.splice(index, 1)
     return next
   })
   setStore("part", input.messageID, undefined)
@@ -397,7 +406,9 @@ export const createDirSyncContext = (
       input.client.session.messages({ sessionID: input.sessionID, limit: input.limit, before: input.before }),
     )
     const items = (messages.data ?? []).filter((x) => !!x?.info?.id)
-    const session = items.map((x) => clean(x.info)).sort((a, b) => cmp(a.id, b.id))
+    // The server page is already in (time_created, id) order; re-sort with the same compound
+    // comparator so a wrapped `msg_00...` tail is never reordered ahead of `msg_ff...` history.
+    const session = items.map((x) => clean(x.info)).sort((a, b) => compareMessages(a, b))
     const part = items.map((message) => ({ id: message.info.id, part: sortParts(message.parts) }))
     const cursor = messages.response?.headers.get("x-next-cursor") ?? undefined
     return {
@@ -485,7 +496,24 @@ export const createDirSyncContext = (
               draft.loading[key] = false
             }),
           )
-          if (conflict && input.refetchOnConflict !== false) requestSessionSync?.(input.sessionID)
+          if (conflict && input.refetchOnConflict !== false) {
+            // BUG-005 residual: degrade conflict recovery from a FULL-session force reload
+            // (requestSessionSync) to an authoritative TAIL refetch. An activityProgress conflict
+            // only means the recent markers diverged; refetching the newest small page
+            // authoritatively reconciles them in place (mergePageMessages keys by id, so untouched
+            // messages are preserved) instead of refetching and re-rendering the whole session.
+            // force:true queues behind the in-flight page; refetchOnConflict:false bounds recursion.
+            void loadMessages({
+              directory: input.directory,
+              client: input.client,
+              setStore: input.setStore,
+              sessionID: input.sessionID,
+              limit: Math.min(input.limit, initialMessagePageSize),
+              force: true,
+              authoritative: true,
+              refetchOnConflict: false,
+            }).catch(() => {})
+          }
         })
     })
   }
diff --git a/packages/app/src/context/global-sync/event-reducer.test.ts b/packages/app/src/context/global-sync/event-reducer.test.ts
index 70397a69..e7bd1e47 100644
--- a/packages/app/src/context/global-sync/event-reducer.test.ts
+++ b/packages/app/src/context/global-sync/event-reducer.test.ts
@@ -546,6 +546,50 @@ describe("applyDirectoryEvent", () => {
     expect(refreshed).toEqual([sessionID])
   })
 
+  test("BUG-005: treats a same-activity revision mismatch as staleness, not a conflict", () => {
+    const sessionID = "ses_1"
+    const current = assistantMessage("msg_assistant", sessionID, {
+      activityID: "activity-1",
+      revision: 5,
+      state: "progress",
+    })
+    const [store, setStore] = createStore(baseState({ message: { [sessionID]: [current] } }))
+    const refreshed: string[] = []
+    const apply = (revision: number, state: "progress" | "final") =>
+      applyDirectoryEvent({
+        event: {
+          type: "message.updated",
+          properties: {
+            info: assistantMessage(current.id, sessionID, {
+              activityID: "activity-1",
+              revision,
+              state,
+            }),
+          },
+        },
+        store,
+        setStore,
+        push() {},
+        directory: "/tmp",
+        loadLsp() {},
+        refetchSession: (id) => refreshed.push(id),
+      })
+
+    // A stale page/event carrying an older revision must keep the higher one and never escalate.
+    apply(2, "progress")
+    expect(refreshed).toEqual([])
+    expect(
+      (store.message[sessionID]?.[0] as Extract<Message, { role: "assistant" }>).activityProgress?.revision,
+    ).toBe(5)
+
+    // A newer revision is adopted without triggering a canonical refresh either.
+    apply(7, "final")
+    expect(refreshed).toEqual([])
+    const progress = (store.message[sessionID]?.[0] as Extract<Message, { role: "assistant" }>).activityProgress
+    expect(progress?.revision).toBe(7)
+    expect(progress?.state).toBe("final")
+  })
+
   test("allows a same-revision activity marker to advance but never regress", () => {
     const sessionID = "ses_1"
     const provisional = assistantMessage("msg_assistant", sessionID, {
@@ -807,6 +851,83 @@ describe("applyDirectoryEvent", () => {
   })
 })
 
+// BUG-407-012 root cause B: the 6-byte ID time field wrapped on 2026-08-14, so chronologically
+// NEWER messages/parts carry lexicographically SMALLER IDs (`msg_00...` < `msg_ff...`). Realtime
+// inserts must keep (time, id) chronological order instead of ID order.
+describe("message ordering across the ID time wrap (BUG-407-012)", () => {
+  const WRAP_OLD_ID = "msg_ffa88f0840015Xj7vIrcdNEJJB" // 2026-08-13 17:51:46
+  const WRAP_NEW_ID = "msg_00d62a3c4001KqYw3o8wBBH6qm" // 2026-08-17 09:42:43
+  const WRAP_OLD_TIME = 1786614706000
+  const WRAP_NEW_TIME = 1786930963000
+
+  const timedUserMessage = (id: string, sessionID: string, created: number) =>
+    ({ ...userMessage(id, sessionID), time: { created } }) as Message
+
+  const timedTextPart = (id: string, sessionID: string, messageID: string, start: number) =>
+    ({
+      id,
+      sessionID,
+      messageID,
+      type: "text",
+      text: id,
+      time: { start },
+    }) as Part
+
+  test("message.updated appends a chronologically newer msg_00... after the older msg_ff...", () => {
+    const sessionID = "ses_1"
+    expect(WRAP_NEW_ID < WRAP_OLD_ID).toBe(true) // sanity: raw ID order is reversed
+    const [store, setStore] = createStore(
+      baseState({ message: { [sessionID]: [timedUserMessage(WRAP_OLD_ID, sessionID, WRAP_OLD_TIME)] } }),
+    )
+
+    applyDirectoryEvent({
+      event: {
+        type: "message.updated",
+        properties: { info: timedUserMessage(WRAP_NEW_ID, sessionID, WRAP_NEW_TIME) },
+      },
+      store,
+      setStore,
+      push() {},
+      directory: "/tmp",
+      loadLsp() {},
+    })
+
+    expect(store.message[sessionID]?.map((message) => message.id)).toEqual([WRAP_OLD_ID, WRAP_NEW_ID])
+
+    // Identity-based removal still works in a (time, id)-ordered array.
+    applyDirectoryEvent({
+      event: { type: "message.removed", properties: { sessionID, messageID: WRAP_OLD_ID } },
+      store,
+      setStore,
+      push() {},
+      directory: "/tmp",
+      loadLsp() {},
+    })
+
+    expect(store.message[sessionID]?.map((message) => message.id)).toEqual([WRAP_NEW_ID])
+  })
+
+  test("message.part.updated appends a chronologically newer wrapped part at the tail", () => {
+    const sessionID = "ses_1"
+    const messageID = WRAP_NEW_ID
+    const oldPart = timedTextPart("prt_ffa88f084001aaaa", sessionID, messageID, WRAP_OLD_TIME)
+    const newPart = timedTextPart("prt_00d62a3c4001bbbb", sessionID, messageID, WRAP_NEW_TIME)
+    expect(newPart.id < oldPart.id).toBe(true) // sanity: raw ID order is reversed
+    const [store, setStore] = createStore(baseState({ part: { [messageID]: [oldPart] } }))
+
+    applyDirectoryEvent({
+      event: { type: "message.part.updated", properties: { part: newPart } },
+      store,
+      setStore,
+      push() {},
+      directory: "/tmp",
+      loadLsp() {},
+    })
+
+    expect(store.part[messageID]?.map((part) => part.id)).toEqual([oldPart.id, newPart.id])
+  })
+})
+
 // Regression guard for the plan panel. The model pushes repeated plan.updated events that advance
 // step statuses; the reducer feeds them into a per-session plan store via reconcile. The previous
 // code used `{ key: "plan_id" }`, which reconcile applies recursively to the nested `steps[]` array
diff --git a/packages/app/src/context/global-sync/event-reducer.ts b/packages/app/src/context/global-sync/event-reducer.ts
index bb97d479..a0a3615f 100644
--- a/packages/app/src/context/global-sync/event-reducer.ts
+++ b/packages/app/src/context/global-sync/event-reducer.ts
@@ -14,6 +14,10 @@ import type { State, VcsCache, SessionPlan, SessionGoal, SessionPlanUpdateOption
 import { trimSessions } from "./session-trim"
 import { dropSessionCaches } from "./session-cache"
 import { diffs as list, message as clean } from "@/utils/diffs"
+// BUG-407-012 root cause B: message/part arrays are kept in (time, id) chronological order, not
+// ID lexicographic order — the 6-byte ID time field wraps every 2^36 ms, so ID order alone is
+// not time order. Bare-ID events (remove/delta) must locate by identity scan, not binary search.
+import { findMessageIndex, findPartIndex, locateMessage, locatePart } from "@/utils/message-order"
 import { promptAdmissionClientMessageID } from "./prompt-admission"
 
 const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
@@ -47,8 +51,15 @@ export function mergeMessage(current: Message, incoming: Message) {
     }
   if (!existing) return { message: incoming, conflict: false }
   if (!next) return { message: { ...incoming, activityProgress: existing }, conflict: false }
-  if (existing.activityID !== next.activityID || existing.revision !== next.revision)
+  if (existing.activityID !== next.activityID)
     return { message: { ...incoming, activityProgress: existing }, conflict: true }
+  // BUG-005: revisions are monotonic within one activity (server commits revision+1). The paged
+  // snapshot routinely lags behind the realtime stream, so a revision mismatch is staleness, not a
+  // conflict — take the higher revision instead of escalating to a whole-session force reload.
+  if (existing.revision !== next.revision)
+    return existing.revision > next.revision
+      ? { message: { ...incoming, activityProgress: existing }, conflict: false }
+      : { message: incoming, conflict: false }
   if (existing.state === next.state) return { message: incoming, conflict: false }
   const rank = (progress: ActivityProgress) =>
     progress.state === "provisional" ? 0 : progress.state === "progress" ? 1 : 2
@@ -274,8 +285,8 @@ export function applyDirectoryEvent(input: {
           produce((draft) => {
             const messages = draft.message[info.sessionID]
             if (messages) {
-              const result = Binary.search(messages, clientMessageID, (message) => message.id)
-              if (result.found) messages.splice(result.index, 1)
+              const index = findMessageIndex(messages, clientMessageID)
+              if (index !== -1) messages.splice(index, 1)
             }
             const parts = draft.part[clientMessageID]
             if (parts) {
@@ -290,7 +301,7 @@ export function applyDirectoryEvent(input: {
         input.setStore("message", info.sessionID, [info])
         break
       }
-      const result = Binary.search(messages, info.id, (m) => m.id)
+      const result = locateMessage(messages, info)
       if (result.found) {
         const existing = messages[result.index]!
         const merged = mergeMessage(existing, info)
@@ -321,8 +332,8 @@ export function applyDirectoryEvent(input: {
         produce((draft) => {
           const messages = draft.message[props.sessionID]
           if (messages) {
-            const result = Binary.search(messages, props.messageID, (m) => m.id)
-            if (result.found) messages.splice(result.index, 1)
+            const index = findMessageIndex(messages, props.messageID)
+            if (index !== -1) messages.splice(index, 1)
           }
           const parts = draft.part[props.messageID]
           if (parts) {
@@ -348,7 +359,7 @@ export function applyDirectoryEvent(input: {
         input.setStore("part", part.messageID, [part])
         break
       }
-      const result = Binary.search(parts, part.id, (p) => p.id)
+      const result = locatePart(parts, part)
       if (result.found) {
         input.setStore("part", part.messageID, result.index, reconcile(part))
         break
@@ -371,15 +382,15 @@ export function applyDirectoryEvent(input: {
       )
       const parts = input.store.part[props.messageID]
       if (!parts) break
-      const result = Binary.search(parts, props.partID, (p) => p.id)
-      if (result.found) {
+      const index = findPartIndex(parts, props.partID)
+      if (index !== -1) {
         input.setStore(
           produce((draft) => {
             const list = draft.part[props.messageID]
             if (!list) return
-            const next = Binary.search(list, props.partID, (p) => p.id)
-            if (!next.found) return
-            list.splice(next.index, 1)
+            const next = findPartIndex(list, props.partID)
+            if (next === -1) return
+            list.splice(next, 1)
             if (list.length === 0) delete draft.part[props.messageID]
           }),
         )
@@ -390,14 +401,14 @@ export function applyDirectoryEvent(input: {
       const props = event.properties as { messageID: string; partID: string; field: string; delta: string }
       const parts = input.store.part[props.messageID]
       if (!parts) break
-      const result = Binary.search(parts, props.partID, (p) => p.id)
-      if (!result.found) break
+      const index = findPartIndex(parts, props.partID)
+      if (index === -1) break
       input.setStore("part_text_accum_delta", props.partID, (existing) => (existing ?? "") + props.delta)
       input.setStore(
         "part",
         props.messageID,
         produce((draft) => {
-          const part = draft[result.index]
+          const part = draft[index]
           const field = props.field as keyof typeof part
           const existing = part[field] as string | undefined
           ;(part[field] as string) = (existing ?? "") + props.delta
diff --git a/packages/app/src/context/layout.tsx b/packages/app/src/context/layout.tsx
index 231fa23c..ff4e37c1 100644
--- a/packages/app/src/context/layout.tsx
+++ b/packages/app/src/context/layout.tsx
@@ -120,6 +120,8 @@ type SessionView = {
     | "profile"
     | "debug"
     | "im"
+    // PARITY-001: cross-session cost/token overview panel.
+    | "stats"
     | "oversight"
     // Movable panel views can also live in the side panel.
     | "terminal"
diff --git a/packages/app/src/context/models.tsx b/packages/app/src/context/models.tsx
index 030f0945..0607e900 100644
--- a/packages/app/src/context/models.tsx
+++ b/packages/app/src/context/models.tsx
@@ -1,9 +1,12 @@
-import { createMemo } from "solid-js"
+import { createMemo, onMount } from "solid-js"
 import { createStore } from "solid-js/store"
 import { DateTime } from "luxon"
 import { filter, firstBy, flat, groupBy, mapValues, pipe, uniqueBy, values } from "remeda"
 import { createSimpleContext } from "@deepagent-code/ui/context"
 import { useProviders } from "@/hooks/use-providers"
+import { useServerSync } from "@/context/server-sync"
+import { useLanguage } from "@/context/language"
+import { showToast } from "@/utils/toast"
 import { Persist, persisted } from "@/utils/persist"
 
 export type ModelKey = { providerID: string; modelID: string }
@@ -27,6 +30,8 @@ export const { use: useModels, provider: ModelsProvider } = createSimpleContext(
   gate: false,
   init: () => {
     const providers = useProviders()
+    const serverSync = useServerSync()
+    const language = useLanguage()
 
     const [store, setStore, _, ready] = persisted(
       Persist.global("model", ["model.v1"]),
@@ -87,9 +92,45 @@ export const { use: useModels, provider: ModelsProvider } = createSimpleContext(
 
     const latestSet = createMemo(() => new Set(latest().map((x) => modelKey(x))))
 
+    // PARITY-004 / GUI 批 — 模型启停服务端真相源:可见性(启/停)的权威来源是服务端 config
+    // `provider[pID].models[mID].disabled`(plugin/provider.ts 已映射 model.enabled=!disabled)。
+    // localStorage(store.user)仅作迁移来源与乐观缓存,不再是真相。
+    const serverDisabled = (model: ModelKey): boolean | undefined => {
+      const provider = serverSync.data.config.provider?.[model.providerID]
+      const disabled = provider?.models?.[model.modelID]?.disabled
+      return typeof disabled === "boolean" ? disabled : undefined
+    }
+
+    const setServerDisabled = async (model: ModelKey, disabled: boolean) => {
+      const config = serverSync.data.config
+      const provider = config.provider?.[model.providerID]
+      const current = provider?.models?.[model.modelID]
+      await serverSync.updateConfig({
+        ...config,
+        provider: {
+          ...config.provider,
+          [model.providerID]: {
+            ...provider,
+            models: {
+              ...provider?.models,
+              [model.modelID]: { ...current, disabled },
+            },
+          },
+        },
+      })
+    }
+
     const visibility = createMemo(() => {
       const map = new Map<string, Visibility>()
+      // localStorage 先铺底(迁移前的旧值)
       for (const item of store.user) map.set(`${item.providerID}:${item.modelID}`, item.visibility)
+      // 服务端真相覆盖(权威)
+      for (const model of available()) {
+        const key = `${model.provider.id}:${model.id}`
+        const disabled = serverDisabled({ providerID: model.provider.id, modelID: model.id })
+        if (disabled === true) map.set(key, "hide")
+        else if (disabled === false) map.set(key, "show")
+      }
       return map
     })
 
@@ -115,14 +156,36 @@ export const { use: useModels, provider: ModelsProvider } = createSimpleContext(
     const find = (key: ModelKey) => list().find((m) => m.id === key.modelID && m.provider.id === key.providerID)
 
     function update(model: ModelKey, state: Visibility) {
+      // 乐观写 localStorage(即时 UI),真相异步写服务端 config。
+      const key = modelKey(model)
       const index = store.user.findIndex((x) => x.modelID === model.modelID && x.providerID === model.providerID)
       if (index >= 0) {
         setStore("user", index, (current) => ({ ...current, visibility: state }))
-        return
+      } else {
+        setStore("user", store.user.length, { ...model, visibility: state })
       }
-      setStore("user", store.user.length, { ...model, visibility: state })
+      void setServerDisabled(model, state === "hide").catch(() => {
+        // 服务端写失败:回滚乐观态——移除该 model 的本地覆盖,visibility 回落到服务端真相/默认。
+        setStore("user", (items) => items.filter((item) => modelKey(item) !== key))
+        showToast({ title: language.t("common.requestFailed") })
+      })
     }
 
+    // 一次性迁移:把 localStorage 里的显式 show/hide 上收服务端,随后服务端即真相。
+    onMount(() => {
+      const pending = store.user.slice()
+      if (pending.length === 0) return
+      void (async () => {
+        for (const item of pending) {
+          if (serverDisabled({ providerID: item.providerID, modelID: item.modelID }) !== undefined) continue
+          await setServerDisabled({ providerID: item.providerID, modelID: item.modelID }, item.visibility === "hide").catch(
+            () => undefined,
+          )
+        }
+        setStore("user", [])
+      })()
+    })
+
     const visible = (model: ModelKey) => {
       const key = modelKey(model)
       const state = visibility().get(key)
diff --git a/packages/app/src/context/permission-auto-respond.ts b/packages/app/src/context/permission-auto-respond.ts
index 38670af2..3347f5f0 100644
--- a/packages/app/src/context/permission-auto-respond.ts
+++ b/packages/app/src/context/permission-auto-respond.ts
@@ -1,5 +1,10 @@
 import { base64Encode } from "@deepagent-code/core/util/encode"
 
+// Mutating-tool set is shared with the CLI read-only mode (PARITY-002): the
+// GUI directory read-only guard and `run --permission-mode read-only` must
+// agree on which permissions are denied, so the constant lives in core.
+export { MUTATING_PERMISSIONS, isMutatingPermission } from "@deepagent-code/core/permission/mutating"
+
 export function acceptKey(sessionID: string, directory?: string) {
   if (!directory) return sessionID
   return `${base64Encode(directory)}/${sessionID}`
@@ -16,15 +21,6 @@ export function isDirectoryReadOnly(readOnly: Record<string, boolean>, directory
   return readOnly[key] ?? false
 }
 
-// Tools that write, execute, or otherwise mutate state — denied in read-only mode.
-// Everything else (read/glob/grep/list/lsp/webfetch/websearch/todowrite/…) is left to the
-// normal permission flow so the agent can still inspect the workspace.
-const MUTATING_PERMISSIONS = new Set(["edit", "write", "patch", "bash", "task", "external_directory"])
-
-export function isMutatingPermission(permission: string) {
-  return MUTATING_PERMISSIONS.has(permission)
-}
-
 function accepted(autoAccept: Record<string, boolean>, sessionID: string, directory?: string) {
   const key = acceptKey(sessionID, directory)
   const directoryKey = directory ? directoryAcceptKey(directory) : undefined
diff --git a/packages/app/src/i18n/ar.ts b/packages/app/src/i18n/ar.ts
index f94a0fe2..ca692879 100644
--- a/packages/app/src/i18n/ar.ts
+++ b/packages/app/src/i18n/ar.ts
@@ -499,6 +499,8 @@ export const dict = {
   "session.share.popover.description.shared": "هذه الجلسة عامة على الويب. يمكن لأي شخص لديه الرابط الوصول إليها.",
   "session.share.popover.description.unshared": "شارك الجلسة علنًا على الويب. ستكون متاحة لأي شخص لديه الرابط.",
   "session.share.action.share": "مشاركة",
+  "session.export.action": "تصدير اللقطة",
+  "session.export.success": "تم تصدير لقطة الجلسة",
   "session.share.action.publish": "نشر",
   "session.share.action.publishing": "جارٍ النشر...",
   "session.share.action.unpublish": "إلغاء النشر",
@@ -518,6 +520,7 @@ export const dict = {
   "common.closeTab": "إغلاق علامة التبويب",
   "common.dismiss": "رفض",
   "common.requestFailed": "فشل الطلب",
+  "common.active": "نشط",
   "common.moreOptions": "مزيد من الخيارات",
   "common.learnMore": "اعرف المزيد",
   "common.rename": "إعادة تسمية",
@@ -682,6 +685,14 @@ export const dict = {
   "settings.providers.section.connected": "الموفرون المتصلون",
   "settings.providers.connected.empty": "لا يوجد موفرون متصلون",
   "settings.providers.section.popular": "الموفرون الشائعون",
+  "settings.providers.section.consoleAccount": "حساب Console",
+  "settings.providers.console.activeOrg": "المنظمة النشطة",
+  "settings.providers.console.noOrg": "لم يتم اختيار منظمة",
+  "settings.providers.console.switchOrg": "تبديل المنظمة",
+  "settings.providers.console.empty": "لا توجد مؤسسات Console قابلة للتبديل",
+  "settings.providers.console.managedCount": "{{count}} من مزودي الخدمة المدارة عبر Console",
+  "settings.providers.console.switch.toast.title": "تم تبديل منظمة Console",
+  "settings.providers.console.switch.toast.description": "الآن يتم استخدام {{org}}",
   "settings.providers.tag.environment": "البيئة",
   "settings.providers.tag.config": "التكوين",
   "settings.providers.tag.custom": "مخصص",
@@ -857,6 +868,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (لقطة)",
+  "settings.import.snapshot.file": "حزمة اللقطة",
+  "settings.import.snapshot.file.hint": "اختر حزمة لقطة الجلسة المصدّرة (.json). سيتم استيرادها كجلسة جديدة قابلة للمتابعة.",
+  "settings.import.snapshot.noFile": "اختر ملف حزمة اللقطة أولاً",
+  "settings.import.snapshot.done": "تم استيراد اللقطة كجلسة جديدة قابلة للمتابعة",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/br.ts b/packages/app/src/i18n/br.ts
index 31699b30..115fbede 100644
--- a/packages/app/src/i18n/br.ts
+++ b/packages/app/src/i18n/br.ts
@@ -505,6 +505,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Compartilhar sessão publicamente na web. Estará acessível para qualquer pessoa com o link.",
   "session.share.action.share": "Compartilhar",
+  "session.export.action": "Exportar snapshot",
+  "session.export.success": "Snapshot de sessao exportado",
   "session.share.action.publish": "Publicar",
   "session.share.action.publishing": "Publicando...",
   "session.share.action.unpublish": "Cancelar publicação",
@@ -525,6 +527,7 @@ export const dict = {
   "common.closeTab": "Fechar aba",
   "common.dismiss": "Descartar",
   "common.requestFailed": "Requisição falhou",
+  "common.active": "Ativa",
   "common.moreOptions": "Mais opções",
   "common.learnMore": "Saiba mais",
   "common.rename": "Renomear",
@@ -694,6 +697,14 @@ export const dict = {
   "settings.providers.section.connected": "Provedores conectados",
   "settings.providers.connected.empty": "Nenhum provedor conectado",
   "settings.providers.section.popular": "Provedores populares",
+  "settings.providers.section.consoleAccount": "Conta Console",
+  "settings.providers.console.activeOrg": "Organização ativa",
+  "settings.providers.console.noOrg": "Nenhuma organização selecionada",
+  "settings.providers.console.switchOrg": "Trocar organização",
+  "settings.providers.console.empty": "Nenhuma organização Console disponível para troca",
+  "settings.providers.console.managedCount": "{{count}} provedores gerenciados pelo Console",
+  "settings.providers.console.switch.toast.title": "Organização Console trocada",
+  "settings.providers.console.switch.toast.description": "Agora usando {{org}}",
   "settings.providers.tag.environment": "Ambiente",
   "settings.providers.tag.config": "Configuração",
   "settings.providers.tag.custom": "Personalizado",
@@ -871,6 +882,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snapshot)",
+  "settings.import.snapshot.file": "Pacote de snapshot",
+  "settings.import.snapshot.file.hint": "Escolha um pacote de snapshot de sessao exportado (.json). Ele sera importado como uma nova sessao continuavel.",
+  "settings.import.snapshot.noFile": "Escolha primeiro um arquivo de pacote de snapshot",
+  "settings.import.snapshot.done": "Snapshot importado como uma nova sessao continuavel",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/bs.ts b/packages/app/src/i18n/bs.ts
index d97be89f..a8285882 100644
--- a/packages/app/src/i18n/bs.ts
+++ b/packages/app/src/i18n/bs.ts
@@ -563,6 +563,8 @@ export const dict = {
   "session.share.popover.description.shared": "Ova sesija je javna na webu. Dostupna je svima koji imaju link.",
   "session.share.popover.description.unshared": "Podijeli sesiju javno na webu. Biće dostupna svima koji imaju link.",
   "session.share.action.share": "Podijeli",
+  "session.export.action": "Izvezi snimak",
+  "session.export.success": "Snimak sesije izvezen",
   "session.share.action.publish": "Objavi",
   "session.share.action.publishing": "Objavljivanje...",
   "session.share.action.unpublish": "Poništi objavu",
@@ -586,6 +588,7 @@ export const dict = {
   "common.closeTab": "Zatvori karticu",
   "common.dismiss": "Odbaci",
   "common.requestFailed": "Zahtjev nije uspio",
+  "common.active": "Aktivna",
   "common.moreOptions": "Više opcija",
   "common.learnMore": "Saznaj više",
   "common.rename": "Preimenuj",
@@ -766,6 +769,14 @@ export const dict = {
   "settings.providers.section.connected": "Povezani provajderi",
   "settings.providers.connected.empty": "Nema povezanih provajdera",
   "settings.providers.section.popular": "Popularni provajderi",
+  "settings.providers.section.consoleAccount": "Console račun",
+  "settings.providers.console.activeOrg": "Aktivna organizacija",
+  "settings.providers.console.noOrg": "Nije odabrana organizacija",
+  "settings.providers.console.switchOrg": "Promijeni organizaciju",
+  "settings.providers.console.empty": "Nema Console organizacija za promjenu",
+  "settings.providers.console.managedCount": "{{count}} provajdera kojima upravlja Console",
+  "settings.providers.console.switch.toast.title": "Console organizacija promijenjena",
+  "settings.providers.console.switch.toast.description": "Sada se koristi {{org}}",
   "settings.providers.tag.environment": "Okruženje",
   "settings.providers.tag.config": "Konfiguracija",
   "settings.providers.tag.custom": "Prilagođeno",
@@ -948,6 +959,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snimak)",
+  "settings.import.snapshot.file": "Paket snimka",
+  "settings.import.snapshot.file.hint": "Odaberite izvezeni paket snimka sesije (.json). Bice uvezen kao nova nastavljiva sesija.",
+  "settings.import.snapshot.noFile": "Prvo odaberite datoteku paketa snimka",
+  "settings.import.snapshot.done": "Snimak uvezen kao nova nastavljiva sesija",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/da.ts b/packages/app/src/i18n/da.ts
index b725d224..66a68347 100644
--- a/packages/app/src/i18n/da.ts
+++ b/packages/app/src/i18n/da.ts
@@ -560,6 +560,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Del session offentligt på nettet. Den vil være tilgængelig for alle med linket.",
   "session.share.action.share": "Del",
+  "session.export.action": "Eksporter snapshot",
+  "session.export.success": "Sessions-snapshot eksporteret",
   "session.share.action.publish": "Udgiv",
   "session.share.action.publishing": "Udgiver...",
   "session.share.action.unpublish": "Afpublicer",
@@ -582,6 +584,7 @@ export const dict = {
   "common.closeTab": "Luk fane",
   "common.dismiss": "Afvis",
   "common.requestFailed": "Forespørgsel mislykkedes",
+  "common.active": "Aktiv",
   "common.moreOptions": "Flere muligheder",
   "common.learnMore": "Lær mere",
   "common.rename": "Omdøb",
@@ -759,6 +762,14 @@ export const dict = {
   "settings.providers.section.connected": "Forbundne udbydere",
   "settings.providers.connected.empty": "Ingen forbundne udbydere",
   "settings.providers.section.popular": "Populære udbydere",
+  "settings.providers.section.consoleAccount": "Console-konto",
+  "settings.providers.console.activeOrg": "Aktiv organisation",
+  "settings.providers.console.noOrg": "Ingen organisation valgt",
+  "settings.providers.console.switchOrg": "Skift organisation",
+  "settings.providers.console.empty": "Ingen Console-organisationer at skifte mellem",
+  "settings.providers.console.managedCount": "{{count}} Console-administrerede udbydere",
+  "settings.providers.console.switch.toast.title": "Console-organisation skiftet",
+  "settings.providers.console.switch.toast.description": "Bruger nu {{org}}",
   "settings.providers.tag.environment": "Miljø",
   "settings.providers.tag.config": "Konfiguration",
   "settings.providers.tag.custom": "Brugerdefineret",
@@ -941,6 +952,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snapshot)",
+  "settings.import.snapshot.file": "Snapshot-bundle",
+  "settings.import.snapshot.file.hint": "Vaelg en eksporteret sessions-snapshot-bundle (.json). Den importeres som en ny fortsaetbar session.",
+  "settings.import.snapshot.noFile": "Vaelg foerst en snapshot-bundle-fil",
+  "settings.import.snapshot.done": "Snapshot importeret som en ny fortsaetbar session",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/de.ts b/packages/app/src/i18n/de.ts
index f1972566..4c141d1b 100644
--- a/packages/app/src/i18n/de.ts
+++ b/packages/app/src/i18n/de.ts
@@ -513,6 +513,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Sitzung öffentlich im Web teilen. Sie wird für jeden mit dem Link zugänglich sein.",
   "session.share.action.share": "Teilen",
+  "session.export.action": "Snapshot exportieren",
+  "session.export.success": "Session-Snapshot exportiert",
   "session.share.action.publish": "Veröffentlichen",
   "session.share.action.publishing": "Veröffentliche...",
   "session.share.action.unpublish": "Veröffentlichung aufheben",
@@ -533,6 +535,7 @@ export const dict = {
   "common.closeTab": "Tab schließen",
   "common.dismiss": "Verwerfen",
   "common.requestFailed": "Anfrage fehlgeschlagen",
+  "common.active": "Aktiv",
   "common.moreOptions": "Weitere Optionen",
   "common.learnMore": "Mehr erfahren",
   "common.rename": "Umbenennen",
@@ -704,6 +707,14 @@ export const dict = {
   "settings.providers.section.connected": "Verbundene Anbieter",
   "settings.providers.connected.empty": "Keine verbundenen Anbieter",
   "settings.providers.section.popular": "Beliebte Anbieter",
+  "settings.providers.section.consoleAccount": "Console-Konto",
+  "settings.providers.console.activeOrg": "Aktive Organisation",
+  "settings.providers.console.noOrg": "Keine Organisation ausgewählt",
+  "settings.providers.console.switchOrg": "Organisation wechseln",
+  "settings.providers.console.empty": "Keine wechselbaren Console-Organisationen",
+  "settings.providers.console.managedCount": "{{count}} Console-verwaltete Anbieter",
+  "settings.providers.console.switch.toast.title": "Console-Organisation gewechselt",
+  "settings.providers.console.switch.toast.description": "Jetzt wird {{org}} verwendet",
   "settings.providers.tag.environment": "Umgebung",
   "settings.providers.tag.config": "Konfiguration",
   "settings.providers.tag.custom": "Benutzerdefiniert",
@@ -887,6 +898,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (Snapshot)",
+  "settings.import.snapshot.file": "Snapshot-Bundle",
+  "settings.import.snapshot.file.hint": "Waehlen Sie ein exportiertes Session-Snapshot-Bundle (.json). Es wird als neue fortsetzbare Sitzung importiert.",
+  "settings.import.snapshot.noFile": "Waehlen Sie zuerst eine Snapshot-Bundle-Datei",
+  "settings.import.snapshot.done": "Snapshot als neue fortsetzbare Sitzung importiert",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/en.ts b/packages/app/src/i18n/en.ts
index 1882e11d..368fe42d 100644
--- a/packages/app/src/i18n/en.ts
+++ b/packages/app/src/i18n/en.ts
@@ -1023,6 +1023,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Share session publicly on the web. It will be accessible to anyone with the link.",
   "session.share.action.share": "Share",
+  "session.export.action": "Export snapshot",
+  "session.export.success": "Session snapshot exported",
   "session.share.action.publish": "Publish",
   "session.share.action.publishing": "Publishing...",
   "session.share.action.unpublish": "Unpublish",
@@ -1060,6 +1062,7 @@ export const dict = {
   "common.dismiss": "Dismiss",
   "common.moreCountSuffix": " (+{{count}} more)",
   "common.requestFailed": "Request failed",
+  "common.active": "Active",
   "common.moreOptions": "More options",
   "common.learnMore": "Learn more",
   "common.rename": "Rename",
@@ -1174,6 +1177,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snapshot)",
+  "settings.import.snapshot.file": "Snapshot bundle",
+  "settings.import.snapshot.file.hint": "Choose an exported session snapshot bundle (.json). It imports as a new continuable session.",
+  "settings.import.snapshot.noFile": "Choose a snapshot bundle file first",
+  "settings.import.snapshot.done": "Snapshot imported as a new continuable session",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
@@ -1483,6 +1491,14 @@ export const dict = {
   "settings.providers.connected.empty": "No connected providers",
   "settings.providers.connected.environmentDescription": "Connected from your environment variables",
   "settings.providers.section.popular": "Popular providers",
+  "settings.providers.section.consoleAccount": "Console account",
+  "settings.providers.console.activeOrg": "Active organization",
+  "settings.providers.console.noOrg": "No organization selected",
+  "settings.providers.console.switchOrg": "Switch organization",
+  "settings.providers.console.empty": "No switchable Console organizations",
+  "settings.providers.console.managedCount": "{{count}} Console-managed providers",
+  "settings.providers.console.switch.toast.title": "Switched Console organization",
+  "settings.providers.console.switch.toast.description": "Now using {{org}}",
   "settings.providers.custom.description": "Add an OpenAI-compatible provider by base URL.",
   "settings.providers.tag.environment": "Environment",
   "settings.providers.tag.config": "Config",
@@ -1601,6 +1617,22 @@ export const dict = {
   "session.context.copyRef": "Copy stable reference",
   "session.context.provenance": "Provenance",
   "session.context.relations": "Relations",
+  "session.stats.title": "Usage & cost",
+  "session.stats.overview": "Overview",
+  "session.stats.sessions": "Sessions",
+  "session.stats.days": "Days",
+  "session.stats.costTokens": "Cost & tokens",
+  "session.stats.totalCost": "Total cost",
+  "session.stats.costPerDay": "Avg cost/day",
+  "session.stats.tokensPerSession": "Avg tokens/session",
+  "session.stats.medianTokens": "Median tokens/session",
+  "session.stats.input": "Input",
+  "session.stats.output": "Output",
+  "session.stats.reasoning": "Reasoning",
+  "session.stats.cacheRead": "Cache read",
+  "session.stats.cacheWrite": "Cache write",
+  "session.stats.modelUsage": "Model usage",
+  "session.stats.noData": "No session usage data yet.",
   "session.context.summary.complete": "Complete",
   "session.context.summary.partial": "Partial",
   "session.context.summary.empty": "Empty",
diff --git a/packages/app/src/i18n/es.ts b/packages/app/src/i18n/es.ts
index 0d6b9085..bdbbf99d 100644
--- a/packages/app/src/i18n/es.ts
+++ b/packages/app/src/i18n/es.ts
@@ -566,6 +566,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Compartir sesión públicamente en la web. Será accesible para cualquiera con el enlace.",
   "session.share.action.share": "Compartir",
+  "session.export.action": "Exportar instantanea",
+  "session.export.success": "Instantanea de sesion exportada",
   "session.share.action.publish": "Publicar",
   "session.share.action.publishing": "Publicando...",
   "session.share.action.unpublish": "Despublicar",
@@ -589,6 +591,7 @@ export const dict = {
   "common.closeTab": "Cerrar pestaña",
   "common.dismiss": "Descartar",
   "common.requestFailed": "Solicitud fallida",
+  "common.active": "Activa",
   "common.moreOptions": "Más opciones",
   "common.learnMore": "Saber más",
   "common.rename": "Renombrar",
@@ -772,6 +775,14 @@ export const dict = {
   "settings.providers.section.connected": "Proveedores conectados",
   "settings.providers.connected.empty": "No hay proveedores conectados",
   "settings.providers.section.popular": "Proveedores populares",
+  "settings.providers.section.consoleAccount": "Cuenta de Console",
+  "settings.providers.console.activeOrg": "Organización activa",
+  "settings.providers.console.noOrg": "Ninguna organización seleccionada",
+  "settings.providers.console.switchOrg": "Cambiar organización",
+  "settings.providers.console.empty": "No hay organizaciones de Console intercambiables",
+  "settings.providers.console.managedCount": "{{count}} proveedores gestionados por Console",
+  "settings.providers.console.switch.toast.title": "Organización de Console cambiada",
+  "settings.providers.console.switch.toast.description": "Ahora usando {{org}}",
   "settings.providers.tag.environment": "Entorno",
   "settings.providers.tag.config": "Configuración",
   "settings.providers.tag.custom": "Personalizado",
@@ -954,6 +965,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (instantanea)",
+  "settings.import.snapshot.file": "Paquete de instantanea",
+  "settings.import.snapshot.file.hint": "Elija un paquete de instantanea de sesion exportado (.json). Se importara como una nueva sesion continuable.",
+  "settings.import.snapshot.noFile": "Elija primero un archivo de paquete de instantanea",
+  "settings.import.snapshot.done": "Instantanea importada como una nueva sesion continuable",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/fr.ts b/packages/app/src/i18n/fr.ts
index 93df50ca..275ec09e 100644
--- a/packages/app/src/i18n/fr.ts
+++ b/packages/app/src/i18n/fr.ts
@@ -510,6 +510,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Partager la session publiquement sur le web. Elle sera accessible à toute personne disposant du lien.",
   "session.share.action.share": "Partager",
+  "session.export.action": "Exporter le snapshot",
+  "session.export.success": "Snapshot de session exporte",
   "session.share.action.publish": "Publier",
   "session.share.action.publishing": "Publication...",
   "session.share.action.unpublish": "Dépublier",
@@ -530,6 +532,7 @@ export const dict = {
   "common.closeTab": "Fermer l'onglet",
   "common.dismiss": "Ignorer",
   "common.requestFailed": "La demande a échoué",
+  "common.active": "Active",
   "common.moreOptions": "Plus d'options",
   "common.learnMore": "En savoir plus",
   "common.rename": "Renommer",
@@ -701,6 +704,14 @@ export const dict = {
   "settings.providers.section.connected": "Fournisseurs connectés",
   "settings.providers.connected.empty": "Aucun fournisseur connecté",
   "settings.providers.section.popular": "Fournisseurs populaires",
+  "settings.providers.section.consoleAccount": "Compte Console",
+  "settings.providers.console.activeOrg": "Organisation active",
+  "settings.providers.console.noOrg": "Aucune organisation sélectionnée",
+  "settings.providers.console.switchOrg": "Changer d'organisation",
+  "settings.providers.console.empty": "Aucune organisation Console commutable",
+  "settings.providers.console.managedCount": "{{count}} fournisseurs gérés par Console",
+  "settings.providers.console.switch.toast.title": "Organisation Console changée",
+  "settings.providers.console.switch.toast.description": "Utilisation de {{org}}",
   "settings.providers.tag.environment": "Environnement",
   "settings.providers.tag.config": "Configuration",
   "settings.providers.tag.custom": "Personnalisé",
@@ -881,6 +892,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snapshot)",
+  "settings.import.snapshot.file": "Bundle de snapshot",
+  "settings.import.snapshot.file.hint": "Choisissez un bundle de snapshot de session exporte (.json). Il sera importe comme une nouvelle session continuable.",
+  "settings.import.snapshot.noFile": "Choisissez d'abord un fichier de bundle de snapshot",
+  "settings.import.snapshot.done": "Snapshot importe comme une nouvelle session continuable",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/ja.ts b/packages/app/src/i18n/ja.ts
index c79ca0f3..ce79c81d 100644
--- a/packages/app/src/i18n/ja.ts
+++ b/packages/app/src/i18n/ja.ts
@@ -504,6 +504,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "セッションをウェブで公開します。リンクを知っている人なら誰でもアクセスできるようになります。",
   "session.share.action.share": "共有",
+  "session.export.action": "スナップショットをエクスポート",
+  "session.export.success": "セッションスナップショットをエクスポートしました",
   "session.share.action.publish": "公開",
   "session.share.action.publishing": "公開中...",
   "session.share.action.unpublish": "非公開にする",
@@ -524,6 +526,7 @@ export const dict = {
   "common.closeTab": "タブを閉じる",
   "common.dismiss": "閉じる",
   "common.requestFailed": "リクエスト失敗",
+  "common.active": "アクティブ",
   "common.moreOptions": "その他のオプション",
   "common.learnMore": "詳細",
   "common.rename": "名前変更",
@@ -692,6 +695,14 @@ export const dict = {
   "settings.providers.section.connected": "接続済みプロバイダー",
   "settings.providers.connected.empty": "接続済みプロバイダーはありません",
   "settings.providers.section.popular": "人気のプロバイダー",
+  "settings.providers.section.consoleAccount": "Console アカウント",
+  "settings.providers.console.activeOrg": "アクティブな組織",
+  "settings.providers.console.noOrg": "組織が選択されていません",
+  "settings.providers.console.switchOrg": "組織を切り替え",
+  "settings.providers.console.empty": "切り替え可能な Console 組織がありません",
+  "settings.providers.console.managedCount": "Console 管理のプロバイダー {{count}} 件",
+  "settings.providers.console.switch.toast.title": "Console 組織を切り替えました",
+  "settings.providers.console.switch.toast.description": "現在 {{org}} を使用中",
   "settings.providers.tag.environment": "環境",
   "settings.providers.tag.config": "設定",
   "settings.providers.tag.custom": "カスタム",
@@ -867,6 +878,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code（スナップショット）",
+  "settings.import.snapshot.file": "スナップショットバンドル",
+  "settings.import.snapshot.file.hint": "エクスポートされたセッションスナップショットバンドル（.json）を選択してください。継続可能な新しいセッションとしてインポートされます。",
+  "settings.import.snapshot.noFile": "先にスナップショットバンドルファイルを選択してください",
+  "settings.import.snapshot.done": "スナップショットは継続可能な新しいセッションとしてインポートされました",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/ko.ts b/packages/app/src/i18n/ko.ts
index 1b742aee..8d2b4079 100644
--- a/packages/app/src/i18n/ko.ts
+++ b/packages/app/src/i18n/ko.ts
@@ -500,6 +500,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "세션을 웹에 공개적으로 공유합니다. 링크가 있는 누구나 액세스할 수 있습니다.",
   "session.share.action.share": "공유",
+  "session.export.action": "스냅샷 내보내기",
+  "session.export.success": "세션 스냅샷을 내보냈습니다",
   "session.share.action.publish": "게시",
   "session.share.action.publishing": "게시 중...",
   "session.share.action.unpublish": "게시 취소",
@@ -520,6 +522,7 @@ export const dict = {
   "common.closeTab": "탭 닫기",
   "common.dismiss": "닫기",
   "common.requestFailed": "요청 실패",
+  "common.active": "활성",
   "common.moreOptions": "더 많은 옵션",
   "common.learnMore": "더 알아보기",
   "common.rename": "이름 바꾸기",
@@ -685,6 +688,14 @@ export const dict = {
   "settings.providers.section.connected": "연결된 공급자",
   "settings.providers.connected.empty": "연결된 공급자 없음",
   "settings.providers.section.popular": "인기 공급자",
+  "settings.providers.section.consoleAccount": "Console 계정",
+  "settings.providers.console.activeOrg": "활성 조직",
+  "settings.providers.console.noOrg": "선택된 조직 없음",
+  "settings.providers.console.switchOrg": "조직 전환",
+  "settings.providers.console.empty": "전환 가능한 Console 조직 없음",
+  "settings.providers.console.managedCount": "Console 관리 공급자 {{count}}개",
+  "settings.providers.console.switch.toast.title": "Console 조직 전환됨",
+  "settings.providers.console.switch.toast.description": "현재 {{org}} 사용 중",
   "settings.providers.tag.environment": "환경",
   "settings.providers.tag.config": "구성",
   "settings.providers.tag.custom": "사용자 지정",
@@ -860,6 +871,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code(스냅샷)",
+  "settings.import.snapshot.file": "스냅샷 번들",
+  "settings.import.snapshot.file.hint": "내보낸 세션 스냅샷 번들(.json)을 선택하세요. 계속할 수 있는 새 세션으로 가져옵니다.",
+  "settings.import.snapshot.noFile": "먼저 스냅샷 번들 파일을 선택하세요",
+  "settings.import.snapshot.done": "스냅샷을 계속할 수 있는 새 세션으로 가져왔습니다",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/no.ts b/packages/app/src/i18n/no.ts
index d0a87222..fe2a2e81 100644
--- a/packages/app/src/i18n/no.ts
+++ b/packages/app/src/i18n/no.ts
@@ -566,6 +566,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Del sesjonen offentlig på nettet. Den vil være tilgjengelig for alle med lenken.",
   "session.share.action.share": "Del",
+  "session.export.action": "Eksporter snapshot",
+  "session.export.success": "Okt-snapshot eksportert",
   "session.share.action.publish": "Publiser",
   "session.share.action.publishing": "Publiserer...",
   "session.share.action.unpublish": "Avpubliser",
@@ -589,6 +591,7 @@ export const dict = {
   "common.closeTab": "Lukk fane",
   "common.dismiss": "Avvis",
   "common.requestFailed": "Forespørsel mislyktes",
+  "common.active": "Aktiv",
   "common.moreOptions": "Flere alternativer",
   "common.learnMore": "Lær mer",
   "common.rename": "Gi nytt navn",
@@ -766,6 +769,14 @@ export const dict = {
   "settings.providers.section.connected": "Tilkoblede leverandører",
   "settings.providers.connected.empty": "Ingen tilkoblede leverandører",
   "settings.providers.section.popular": "Populære leverandører",
+  "settings.providers.section.consoleAccount": "Console-konto",
+  "settings.providers.console.activeOrg": "Aktiv organisasjon",
+  "settings.providers.console.noOrg": "Ingen organisasjon valgt",
+  "settings.providers.console.switchOrg": "Bytt organisasjon",
+  "settings.providers.console.empty": "Ingen Console-organisasjoner å bytte mellom",
+  "settings.providers.console.managedCount": "{{count}} Console-administrerte leverandører",
+  "settings.providers.console.switch.toast.title": "Console-organisasjon byttet",
+  "settings.providers.console.switch.toast.description": "Bruker nå {{org}}",
   "settings.providers.tag.environment": "Miljø",
   "settings.providers.tag.config": "Konfigurasjon",
   "settings.providers.tag.custom": "Tilpasset",
@@ -953,6 +964,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (snapshot)",
+  "settings.import.snapshot.file": "Snapshot-bundle",
+  "settings.import.snapshot.file.hint": "Velg en eksportert okt-snapshot-bundle (.json). Den importeres som en ny fortsettbar okt.",
+  "settings.import.snapshot.noFile": "Velg foerst en snapshot-bundle-fil",
+  "settings.import.snapshot.done": "Snapshot importert som en ny fortsettbar okt",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/pl.ts b/packages/app/src/i18n/pl.ts
index ea9daff2..76ed195a 100644
--- a/packages/app/src/i18n/pl.ts
+++ b/packages/app/src/i18n/pl.ts
@@ -504,6 +504,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Udostępnij sesję publicznie w sieci. Będzie dostępna dla każdego, kto posiada link.",
   "session.share.action.share": "Udostępnij",
+  "session.export.action": "Eksportuj migawke",
+  "session.export.success": "Migawka sesji wyeksportowana",
   "session.share.action.publish": "Opublikuj",
   "session.share.action.publishing": "Publikowanie...",
   "session.share.action.unpublish": "Cofnij publikację",
@@ -524,6 +526,7 @@ export const dict = {
   "common.closeTab": "Zamknij kartę",
   "common.dismiss": "Odrzuć",
   "common.requestFailed": "Żądanie nie powiodło się",
+  "common.active": "Aktywna",
   "common.moreOptions": "Więcej opcji",
   "common.learnMore": "Dowiedz się więcej",
   "common.rename": "Zmień nazwę",
@@ -693,6 +696,14 @@ export const dict = {
   "settings.providers.section.connected": "Połączeni dostawcy",
   "settings.providers.connected.empty": "Brak połączonych dostawców",
   "settings.providers.section.popular": "Popularni dostawcy",
+  "settings.providers.section.consoleAccount": "Konto Console",
+  "settings.providers.console.activeOrg": "Aktywna organizacja",
+  "settings.providers.console.noOrg": "Nie wybrano organizacji",
+  "settings.providers.console.switchOrg": "Przełącz organizację",
+  "settings.providers.console.empty": "Brak organizacji Console do przełączenia",
+  "settings.providers.console.managedCount": "{{count}} dostawców zarządzanych przez Console",
+  "settings.providers.console.switch.toast.title": "Przełączono organizację Console",
+  "settings.providers.console.switch.toast.description": "Teraz używany jest {{org}}",
   "settings.providers.tag.environment": "Środowisko",
   "settings.providers.tag.config": "Konfiguracja",
   "settings.providers.tag.custom": "Niestandardowe",
@@ -870,6 +881,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (migawka)",
+  "settings.import.snapshot.file": "Pakiet migawki",
+  "settings.import.snapshot.file.hint": "Wybierz wyeksportowany pakiet migawki sesji (.json). Zostanie zaimportowany jako nowa kontynuowalna sesja.",
+  "settings.import.snapshot.noFile": "Najpierw wybierz plik pakietu migawki",
+  "settings.import.snapshot.done": "Migawka zaimportowana jako nowa kontynuowalna sesja",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/ru.ts b/packages/app/src/i18n/ru.ts
index 7e599757..20609699 100644
--- a/packages/app/src/i18n/ru.ts
+++ b/packages/app/src/i18n/ru.ts
@@ -562,6 +562,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Опубликуйте сессию в интернете. Доступ к ней сможет получить любой, у кого есть ссылка.",
   "session.share.action.share": "Поделиться",
+  "session.export.action": "Экспортировать снапшот",
+  "session.export.success": "Снапшот сессии экспортирован",
   "session.share.action.publish": "Опубликовать",
   "session.share.action.publishing": "Публикация...",
   "session.share.action.unpublish": "Отменить публикацию",
@@ -585,6 +587,7 @@ export const dict = {
   "common.closeTab": "Закрыть вкладку",
   "common.dismiss": "Закрыть",
   "common.requestFailed": "Запрос не выполнен",
+  "common.active": "Активна",
   "common.moreOptions": "Дополнительные опции",
   "common.learnMore": "Подробнее",
   "common.rename": "Переименовать",
@@ -767,6 +770,14 @@ export const dict = {
   "settings.providers.section.connected": "Подключённые провайдеры",
   "settings.providers.connected.empty": "Нет подключённых провайдеров",
   "settings.providers.section.popular": "Популярные провайдеры",
+  "settings.providers.section.consoleAccount": "Аккаунт Console",
+  "settings.providers.console.activeOrg": "Активная организация",
+  "settings.providers.console.noOrg": "Организация не выбрана",
+  "settings.providers.console.switchOrg": "Сменить организацию",
+  "settings.providers.console.empty": "Нет доступных для переключения организаций Console",
+  "settings.providers.console.managedCount": "Провайдеров под управлением Console: {{count}}",
+  "settings.providers.console.switch.toast.title": "Организация Console изменена",
+  "settings.providers.console.switch.toast.description": "Теперь используется {{org}}",
   "settings.providers.tag.environment": "Среда",
   "settings.providers.tag.config": "Конфигурация",
   "settings.providers.tag.custom": "Пользовательский",
@@ -950,6 +961,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (снапшот)",
+  "settings.import.snapshot.file": "Пакет снапшота",
+  "settings.import.snapshot.file.hint": "Выберите экспортированный пакет снапшота сессии (.json). Он будет импортирован как новая возобновляемая сессия.",
+  "settings.import.snapshot.noFile": "Сначала выберите файл пакета снапшота",
+  "settings.import.snapshot.done": "Снапшот импортирован как новая возобновляемая сессия",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/th.ts b/packages/app/src/i18n/th.ts
index 8cea2edd..d156dc80 100644
--- a/packages/app/src/i18n/th.ts
+++ b/packages/app/src/i18n/th.ts
@@ -558,6 +558,8 @@ export const dict = {
   "session.share.popover.description.shared": "เซสชันนี้เป็นสาธารณะบนเว็บ สามารถเข้าถึงได้โดยผู้ที่มีลิงก์",
   "session.share.popover.description.unshared": "แชร์เซสชันสาธารณะบนเว็บ จะเข้าถึงได้โดยผู้ที่มีลิงก์",
   "session.share.action.share": "แชร์",
+  "session.export.action": "ส่งออกสแนปชอต",
+  "session.export.success": "ส่งออกสแนปชอตเซสชันแล้ว",
   "session.share.action.publish": "เผยแพร่",
   "session.share.action.publishing": "กำลังเผยแพร่...",
   "session.share.action.unpublish": "ยกเลิกการเผยแพร่",
@@ -580,6 +582,7 @@ export const dict = {
   "common.closeTab": "ปิดแท็บ",
   "common.dismiss": "ปิด",
   "common.requestFailed": "คำขอล้มเหลว",
+  "common.active": "ใช้งานอยู่",
   "common.moreOptions": "ตัวเลือกเพิ่มเติม",
   "common.learnMore": "เรียนรู้เพิ่มเติม",
   "common.rename": "เปลี่ยนชื่อ",
@@ -756,6 +759,14 @@ export const dict = {
   "settings.providers.section.connected": "ผู้ให้บริการที่เชื่อมต่อ",
   "settings.providers.connected.empty": "ไม่มีผู้ให้บริการที่เชื่อมต่อ",
   "settings.providers.section.popular": "ผู้ให้บริการยอดนิยม",
+  "settings.providers.section.consoleAccount": "บัญชี Console",
+  "settings.providers.console.activeOrg": "องค์กรที่ใช้งาน",
+  "settings.providers.console.noOrg": "ยังไม่ได้เลือกองค์กร",
+  "settings.providers.console.switchOrg": "สลับองค์กร",
+  "settings.providers.console.empty": "ไม่มีองค์กร Console ที่สลับได้",
+  "settings.providers.console.managedCount": "ผู้ให้บริการที่จัดการโดย Console {{count}} ราย",
+  "settings.providers.console.switch.toast.title": "สลับองค์กร Console แล้ว",
+  "settings.providers.console.switch.toast.description": "กำลังใช้ {{org}}",
   "settings.providers.tag.environment": "สภาพแวดล้อม",
   "settings.providers.tag.config": "กำหนดค่า",
   "settings.providers.tag.custom": "กำหนดเอง",
@@ -937,6 +948,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (สแนปชอต)",
+  "settings.import.snapshot.file": "ชุดสแนปชอต",
+  "settings.import.snapshot.file.hint": "เลือกชุดสแนปชอตเซสชันที่ส่งออก (.json) จะนำเข้าเป็นเซสชันใหม่ที่ทำงานต่อได้",
+  "settings.import.snapshot.noFile": "เลือกไฟล์ชุดสแนปชอตก่อน",
+  "settings.import.snapshot.done": "นำเข้าสแนปชอตเป็นเซสชันใหม่ที่ทำงานต่อแล้ว",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/tr.ts b/packages/app/src/i18n/tr.ts
index e4abc007..51ad08cb 100644
--- a/packages/app/src/i18n/tr.ts
+++ b/packages/app/src/i18n/tr.ts
@@ -568,6 +568,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Oturumu web'de herkese açık olarak paylaşın. Bağlantıya sahip herkes erişebilecek.",
   "session.share.action.share": "Paylaş",
+  "session.export.action": "Anlık goruntuyu disa aktar",
+  "session.export.success": "Oturum anlık goruntusu disa aktarıldı",
   "session.share.action.publish": "Yayınla",
   "session.share.action.publishing": "Yayınlanıyor...",
   "session.share.action.unpublish": "Yayından kaldır",
@@ -591,6 +593,7 @@ export const dict = {
   "common.closeTab": "Sekmeyi kapat",
   "common.dismiss": "Kapat",
   "common.requestFailed": "İstek başarısız",
+  "common.active": "Etkin",
   "common.moreOptions": "Daha fazla seçenek",
   "common.learnMore": "Daha fazla bilgi",
   "common.rename": "Yeniden adlandır",
@@ -775,6 +778,14 @@ export const dict = {
   "settings.providers.section.connected": "Bağlı sağlayıcılar",
   "settings.providers.connected.empty": "Bağlı sağlayıcı yok",
   "settings.providers.section.popular": "Popüler sağlayıcılar",
+  "settings.providers.section.consoleAccount": "Console hesabı",
+  "settings.providers.console.activeOrg": "Etkin kuruluş",
+  "settings.providers.console.noOrg": "Kuruluş seçilmedi",
+  "settings.providers.console.switchOrg": "Kuruluş değiştir",
+  "settings.providers.console.empty": "Değiştirilebilir Console kuruluşu yok",
+  "settings.providers.console.managedCount": "Console tarafından yönetilen {{count}} sağlayıcı",
+  "settings.providers.console.switch.toast.title": "Console kuruluşu değiştirildi",
+  "settings.providers.console.switch.toast.description": "Şimdi {{org}} kullanılıyor",
   "settings.providers.tag.environment": "Ortam",
   "settings.providers.tag.config": "Yapılandırma",
   "settings.providers.tag.custom": "Özel",
@@ -960,6 +971,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (anlık goruntu)",
+  "settings.import.snapshot.file": "Anlık goruntu paketi",
+  "settings.import.snapshot.file.hint": "Disa aktarılmıs bir oturum anlık goruntu paketi (.json) secin. Devam edilebilir yeni bir oturum olarak ice aktarılır.",
+  "settings.import.snapshot.noFile": "Once bir anlık goruntu paketi dosyası secin",
+  "settings.import.snapshot.done": "Anlık goruntu devam edilebilir yeni bir oturum olarak ice aktarıldı",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/uk.ts b/packages/app/src/i18n/uk.ts
index 7a82b2a5..b8c8d2d9 100644
--- a/packages/app/src/i18n/uk.ts
+++ b/packages/app/src/i18n/uk.ts
@@ -616,6 +616,8 @@ export const dict = {
   "session.share.popover.description.unshared":
     "Опублікуйте сесію публічно в інтернеті. Вона буде доступна будь-кому за посиланням.",
   "session.share.action.share": "Поділитися",
+  "session.export.action": "Експортувати знімок",
+  "session.export.success": "Знімок сеансу експортовано",
   "session.share.action.publish": "Опублікувати",
   "session.share.action.publishing": "Публікація...",
   "session.share.action.unpublish": "Скасувати публікацію",
@@ -641,6 +643,7 @@ export const dict = {
   "common.dismiss": "Відхилити",
   "common.moreCountSuffix": " (ще {{count}})",
   "common.requestFailed": "Запит не виконано",
+  "common.active": "Активна",
   "common.moreOptions": "Більше опцій",
   "common.learnMore": "Дізнатися більше",
   "common.rename": "Перейменувати",
@@ -887,6 +890,14 @@ export const dict = {
   "settings.providers.connected.empty": "Немає підключених провайдерів",
   "settings.providers.connected.environmentDescription": "Підключено зі змінних середовища",
   "settings.providers.section.popular": "Популярні провайдери",
+  "settings.providers.section.consoleAccount": "Обліковий запис Console",
+  "settings.providers.console.activeOrg": "Активна організація",
+  "settings.providers.console.noOrg": "Організацію не вибрано",
+  "settings.providers.console.switchOrg": "Змінити організацію",
+  "settings.providers.console.empty": "Немає організацій Console для перемикання",
+  "settings.providers.console.managedCount": "Провайдерів під керуванням Console: {{count}}",
+  "settings.providers.console.switch.toast.title": "Організацію Console змінено",
+  "settings.providers.console.switch.toast.description": "Тепер використовується {{org}}",
   "settings.providers.custom.description": "Додайте провайдера, сумісного з OpenAI, за базовим URL.",
   "settings.providers.tag.environment": "Середовище",
   "settings.providers.tag.config": "Конфігурація",
@@ -981,6 +992,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "Custom",
+  "settings.import.preset.deepagent": "DeepAgent Code (знімок)",
+  "settings.import.snapshot.file": "Пакет знімка",
+  "settings.import.snapshot.file.hint": "Виберіть експортований пакет знімка сеансу (.json). Його буде імпортовано як нову продовжувану сесію.",
+  "settings.import.snapshot.noFile": "Спочатку виберіть файл пакета знімка",
+  "settings.import.snapshot.done": "Знімок імпортовано як нову продовжувану сесію",
   "settings.import.customPath": "Path",
   "settings.import.customPath.hint": "Absolute path to the agent data directory.",
   "settings.import.scope": "What to import",
diff --git a/packages/app/src/i18n/zh.ts b/packages/app/src/i18n/zh.ts
index 7baf438a..955a4e55 100644
--- a/packages/app/src/i18n/zh.ts
+++ b/packages/app/src/i18n/zh.ts
@@ -894,6 +894,8 @@ export const dict = {
   "session.share.popover.description.shared": "此会话已在网页上公开。任何拥有链接的人都可以访问。",
   "session.share.popover.description.unshared": "在网页上公开分享此会话。任何拥有链接的人都可以访问。",
   "session.share.action.share": "分享",
+  "session.export.action": "导出快照",
+  "session.export.success": "会话快照已导出",
   "session.share.action.publish": "发布",
   "session.share.action.publishing": "正在发布...",
   "session.share.action.unpublish": "取消发布",
@@ -929,6 +931,7 @@ export const dict = {
   "common.closeTab": "关闭标签页",
   "common.dismiss": "忽略",
   "common.requestFailed": "请求失败",
+  "common.active": "当前",
   "common.moreOptions": "更多选项",
   "common.learnMore": "了解更多",
   "common.rename": "重命名",
@@ -1203,6 +1206,14 @@ export const dict = {
   "settings.providers.section.connected": "已连接的提供商",
   "settings.providers.connected.empty": "没有已连接的提供商",
   "settings.providers.section.popular": "热门提供商",
+  "settings.providers.section.consoleAccount": "Console 账号",
+  "settings.providers.console.activeOrg": "当前组织",
+  "settings.providers.console.noOrg": "未选择组织",
+  "settings.providers.console.switchOrg": "切换组织",
+  "settings.providers.console.empty": "没有可切换的 Console 组织",
+  "settings.providers.console.managedCount": "{{count}} 个 Console 托管的提供商",
+  "settings.providers.console.switch.toast.title": "已切换 Console 组织",
+  "settings.providers.console.switch.toast.description": "当前使用 {{org}}",
   "settings.providers.tag.environment": "环境",
   "settings.providers.tag.config": "配置",
   "settings.providers.tag.custom": "自定义",
@@ -1403,6 +1414,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "自定义",
+  "settings.import.preset.deepagent": "DeepAgent Code（快照）",
+  "settings.import.snapshot.file": "快照包",
+  "settings.import.snapshot.file.hint": "选择导出的会话快照包（.json），将导入为新的可续跑会话。",
+  "settings.import.snapshot.noFile": "请先选择快照包文件",
+  "settings.import.snapshot.done": "快照已导入为新的可续跑会话",
   "settings.import.customPath": "路径",
   "settings.import.customPath.hint": "Agent 数据目录的绝对路径。",
   "settings.import.scope": "导入内容",
@@ -1543,6 +1559,22 @@ export const dict = {
   "session.context.copyRef": "复制稳定引用",
   "session.context.provenance": "来源",
   "session.context.relations": "关联",
+  "session.stats.title": "用量与成本",
+  "session.stats.overview": "概览",
+  "session.stats.sessions": "会话数",
+  "session.stats.days": "天数",
+  "session.stats.costTokens": "成本与 Token",
+  "session.stats.totalCost": "总成本",
+  "session.stats.costPerDay": "日均成本",
+  "session.stats.tokensPerSession": "平均 Token/会话",
+  "session.stats.medianTokens": "中位 Token/会话",
+  "session.stats.input": "输入",
+  "session.stats.output": "输出",
+  "session.stats.reasoning": "推理",
+  "session.stats.cacheRead": "缓存读取",
+  "session.stats.cacheWrite": "缓存写入",
+  "session.stats.modelUsage": "模型用量",
+  "session.stats.noData": "暂无会话用量数据。",
   "session.context.summary.complete": "完整",
   "session.context.summary.partial": "部分",
   "session.context.summary.empty": "空",
diff --git a/packages/app/src/i18n/zht.ts b/packages/app/src/i18n/zht.ts
index 745deeb7..51f35cda 100644
--- a/packages/app/src/i18n/zht.ts
+++ b/packages/app/src/i18n/zht.ts
@@ -699,6 +699,8 @@ export const dict = {
   "session.share.popover.description.shared": "此工作階段已在網頁上公開。任何擁有連結的人都可以存取。",
   "session.share.popover.description.unshared": "在網頁上公開分享此工作階段。任何擁有連結的人都可以存取。",
   "session.share.action.share": "分享",
+  "session.export.action": "匯出快照",
+  "session.export.success": "工作階段快照已匯出",
   "session.share.action.publish": "發佈",
   "session.share.action.publishing": "正在發佈...",
   "session.share.action.unpublish": "取消發佈",
@@ -721,6 +723,7 @@ export const dict = {
   "common.closeTab": "關閉標籤頁",
   "common.dismiss": "忽略",
   "common.requestFailed": "要求失敗",
+  "common.active": "目前",
   "common.moreOptions": "更多選項",
   "common.learnMore": "深入了解",
   "common.rename": "重新命名",
@@ -920,6 +923,14 @@ export const dict = {
   "settings.providers.section.connected": "已連線的提供商",
   "settings.providers.connected.empty": "沒有已連線的提供商",
   "settings.providers.section.popular": "熱門提供商",
+  "settings.providers.section.consoleAccount": "Console 帳號",
+  "settings.providers.console.activeOrg": "目前組織",
+  "settings.providers.console.noOrg": "未選擇組織",
+  "settings.providers.console.switchOrg": "切換組織",
+  "settings.providers.console.empty": "沒有可切換的 Console 組織",
+  "settings.providers.console.managedCount": "{{count}} 個 Console 託管的供應商",
+  "settings.providers.console.switch.toast.title": "已切換 Console 組織",
+  "settings.providers.console.switch.toast.description": "目前使用 {{org}}",
   "settings.providers.tag.environment": "環境",
   "settings.providers.tag.config": "配置",
   "settings.providers.tag.custom": "自訂",
@@ -1104,6 +1115,11 @@ export const dict = {
   "settings.import.preset.codex": "Codex",
   "settings.import.preset.claude": "Claude Code",
   "settings.import.preset.custom": "自訂",
+  "settings.import.preset.deepagent": "DeepAgent Code（快照）",
+  "settings.import.snapshot.file": "快照包",
+  "settings.import.snapshot.file.hint": "選擇匯出的工作階段快照包（.json），將匯入為新的可接續工作階段。",
+  "settings.import.snapshot.noFile": "請先選擇快照包檔案",
+  "settings.import.snapshot.done": "快照已匯入為新的可接續工作階段",
   "settings.import.customPath": "路徑",
   "settings.import.customPath.hint": "Agent 資料目錄的絕對路徑。",
   "settings.import.scope": "匯入內容",
diff --git a/packages/app/src/pages/session.tsx b/packages/app/src/pages/session.tsx
index 96f2616c..259c20e9 100644
--- a/packages/app/src/pages/session.tsx
+++ b/packages/app/src/pages/session.tsx
@@ -74,6 +74,7 @@ import { useSessionCommands } from "@/pages/session/use-session-commands"
 import { useSessionHashScroll } from "@/pages/session/use-session-hash-scroll"
 import { Identifier } from "@/utils/id"
 import { diffs as list } from "@/utils/diffs"
+import { messageOrderKey } from "@/utils/message-order"
 import { Persist, persisted } from "@/utils/persist"
 import { extractPromptFromParts } from "@/utils/prompt"
 import { same } from "@/utils/same"
@@ -384,6 +385,14 @@ export default function Page() {
     () => {
       const revert = revertMessageID()
       if (!revert) return userMessages()
+      // BUG-407-012 root cause B: the revert boundary is the TARGET message's time, not its ID —
+      // ID lexicographic order flips across the 6-byte ID time wrap. If the target is not in the
+      // loaded window, degrade to the legacy ID boundary instead of guessing a time.
+      const target = messages().find((m) => m.id === revert)
+      if (target) {
+        const bound = messageOrderKey(target)
+        return userMessages().filter((m) => messageOrderKey(m) < bound)
+      }
       return userMessages().filter((m) => m.id < revert)
     },
     emptyUserMessages,
@@ -391,6 +400,8 @@ export default function Page() {
       equals: same,
     },
   )
+  // The timeline arrays are maintained in (time, id) chronological order, so the last element is
+  // the latest message even when its wrapped `msg_00...` ID sorts before older `msg_ff...` IDs.
   const lastUserMessage = createMemo(() => visibleUserMessages().at(-1))
 
   createEffect(() => {
@@ -718,9 +729,14 @@ export default function Page() {
 
   createEffect(
     on(
-      () => visibleUserMessages().at(-1)?.id,
-      (lastId, prevLastId) => {
-        if (lastId && prevLastId && lastId > prevLastId) {
+      // BUG-407-012 root cause B: compare (time, id) order keys, not raw IDs — a wrapped
+      // `msg_00...` newest message is lexicographically smaller than the previous `msg_ff...` one.
+      () => {
+        const last = visibleUserMessages().at(-1)
+        return last ? messageOrderKey(last) : undefined
+      },
+      (lastOrder, prevOrder) => {
+        if (lastOrder && prevOrder && lastOrder > prevOrder) {
           setStore("messageId", undefined)
         }
       },
diff --git a/packages/app/src/pages/session/message-timeline-virtualize.test.ts b/packages/app/src/pages/session/message-timeline-virtualize.test.ts
new file mode 100644
index 00000000..5a60fac9
--- /dev/null
+++ b/packages/app/src/pages/session/message-timeline-virtualize.test.ts
@@ -0,0 +1,172 @@
+import { afterAll, beforeAll, describe, expect, mock, test } from "bun:test"
+import type { Part, ToolPart, ToolStateCompleted } from "@deepagent-code/sdk/v2"
+
+let shouldVirtualizeToolDiff: typeof import("./message-timeline").shouldVirtualizeToolDiff
+let toolDiffPayloadSize: typeof import("./message-timeline").toolDiffPayloadSize
+
+beforeAll(async () => {
+  // Bun test resolves solid-js through the "worker" condition (SSR build). Several
+  // packages in message-timeline's import graph assume the client build at module scope:
+  // virtua/solid imports a web-only export, and @solidjs/router / @kobalte/core chunks
+  // call client-only solid APIs on load. Stub those packages (nothing renders here, the
+  // functions under test are pure) while keeping solid-js itself on the single SSR build
+  // used by every other test file - mixing client/server solid builds in one process
+  // deadlocks the reactive scheduler.
+  const componentStub: any = new Proxy(() => null, { get: () => componentStub })
+  mock.module("virtua/solid", () => ({ Virtualizer: componentStub }))
+  // Keep the real (Kobalte-backed) message-part out of the module cache: other tests
+  // (message-timeline.data.test.ts) mock this module and bun re-links cached importers
+  // against the real one otherwise.
+  mock.module("@deepagent-code/ui/message-part", () => ({
+    ContextToolGroup: componentStub,
+    Message: componentStub,
+    MessageDivider: componentStub,
+    Part: componentStub,
+    partDefaultOpen: () => false,
+    groupParts: () => [],
+    renderable: () => true,
+  }))
+  mock.module("@solidjs/router", () => ({
+    A: componentStub,
+    Navigate: componentStub,
+    Route: componentStub,
+    Router: componentStub,
+    useIsRouting: () => () => false,
+    useLocation: () => ({ pathname: "/" }),
+    useNavigate: () => () => undefined,
+    useParams: () => ({}),
+    useSearchParams: () => ({}),
+  }))
+  const kobalte: Record<string, Record<string, unknown>> = {
+    "@kobalte/core/accordion": { Accordion: componentStub },
+    "@kobalte/core/button": { Button: componentStub },
+    "@kobalte/core/checkbox": { Checkbox: componentStub },
+    "@kobalte/core/collapsible": { Collapsible: componentStub },
+    "@kobalte/core/context-menu": { ContextMenu: componentStub },
+    "@kobalte/core/dialog": { Dialog: componentStub },
+    "@kobalte/core/dropdown-menu": { DropdownMenu: componentStub },
+    "@kobalte/core/hover-card": { HoverCard: componentStub },
+    "@kobalte/core/popover": { Popover: componentStub },
+    "@kobalte/core/progress": { Progress: componentStub },
+    "@kobalte/core/radio-group": { RadioGroup: componentStub },
+    "@kobalte/core/segmented-control": { SegmentedControl: componentStub },
+    "@kobalte/core/select": { Select: componentStub },
+    "@kobalte/core/switch": { Switch: componentStub },
+    "@kobalte/core/tabs": { Tabs: componentStub },
+    "@kobalte/core/text-field": { TextField: componentStub },
+    "@kobalte/core/toast": { Toast: componentStub, toaster: componentStub },
+    "@kobalte/core/tooltip": { Tooltip: componentStub },
+  }
+  for (const [name, exports] of Object.entries(kobalte)) {
+    mock.module(name, () => exports)
+  }
+
+  const mod = await import("./message-timeline")
+  shouldVirtualizeToolDiff = mod.shouldVirtualizeToolDiff
+  toolDiffPayloadSize = mod.toolDiffPayloadSize
+})
+
+// Drop the stubs once this file's tests are done so later files link the real modules;
+// the modules loaded above stay cached but are harmless (other test files that need
+// them, e.g. message-timeline.data.test.ts, register their own mocks).
+afterAll(() => mock.restore())
+
+const large = "x".repeat(500_001)
+const small = "x".repeat(100)
+
+function completedTool(overrides: Partial<Omit<ToolStateCompleted, "status">> = {}, tool = "edit"): ToolPart {
+  return {
+    id: "part-1",
+    sessionID: "session-1",
+    messageID: "message-1",
+    type: "tool",
+    callID: "call-1",
+    tool,
+    state: {
+      status: "completed",
+      input: {},
+      output: small,
+      title: "done",
+      metadata: {},
+      time: { start: 1, end: 2 },
+      ...overrides,
+    },
+  }
+}
+
+describe("shouldVirtualizeToolDiff (UX-001)", () => {
+  test("non-tool parts never virtualize", () => {
+    const part = {
+      id: "part-1",
+      sessionID: "session-1",
+      messageID: "message-1",
+      type: "text",
+      text: large,
+    } satisfies Part
+    expect(toolDiffPayloadSize(part)).toBe(0)
+    expect(shouldVirtualizeToolDiff(part)).toBe(false)
+  })
+
+  test("streaming (pending/running) parts never virtualize even with large payloads", () => {
+    const running: ToolPart = {
+      id: "part-1",
+      sessionID: "session-1",
+      messageID: "message-1",
+      type: "tool",
+      callID: "call-1",
+      tool: "edit",
+      state: { status: "running", input: {}, metadata: { filediff: { after: large } }, time: { start: 1 } },
+    }
+    expect(shouldVirtualizeToolDiff(running)).toBe(false)
+
+    const pending: ToolPart = { ...running, state: { status: "pending", input: {}, raw: large } }
+    expect(shouldVirtualizeToolDiff(pending)).toBe(false)
+  })
+
+  test("error parts never virtualize", () => {
+    const errored: ToolPart = {
+      id: "part-1",
+      sessionID: "session-1",
+      messageID: "message-1",
+      type: "tool",
+      callID: "call-1",
+      tool: "edit",
+      state: { status: "error", input: {}, error: large, time: { start: 1, end: 2 } },
+    }
+    expect(shouldVirtualizeToolDiff(errored)).toBe(false)
+  })
+
+  test("small completed diffs stay non-virtualized", () => {
+    expect(shouldVirtualizeToolDiff(completedTool())).toBe(false)
+    expect(shouldVirtualizeToolDiff(completedTool({ output: small, metadata: { filediff: { after: small } } }))).toBe(
+      false,
+    )
+  })
+
+  test("completed edit tool with large filediff payload virtualizes", () => {
+    expect(shouldVirtualizeToolDiff(completedTool({ metadata: { filediff: { after: large } } }))).toBe(true)
+    expect(shouldVirtualizeToolDiff(completedTool({ metadata: { filediff: { before: large } } }))).toBe(true)
+    expect(shouldVirtualizeToolDiff(completedTool({ metadata: { filediff: { patch: large } } }))).toBe(true)
+  })
+
+  test("completed apply_patch with large per-file patch virtualizes", () => {
+    const part = completedTool({ metadata: { files: [{ filePath: "a.ts", patch: large }] } }, "apply_patch")
+    expect(shouldVirtualizeToolDiff(part)).toBe(true)
+
+    const multi = completedTool(
+      { metadata: { files: [{ filePath: "a.ts", patch: small }, { filePath: "b.ts", diff: large }] } },
+      "apply_patch",
+    )
+    expect(shouldVirtualizeToolDiff(multi)).toBe(true)
+  })
+
+  test("falls back to output length proxy when no diff metadata exists", () => {
+    expect(shouldVirtualizeToolDiff(completedTool({ output: large }))).toBe(true)
+    expect(toolDiffPayloadSize(completedTool({ output: large }))).toBe(large.length)
+  })
+
+  test("threshold boundary is strict (> 500KB)", () => {
+    const exact = completedTool({ output: "x".repeat(500_000) })
+    expect(shouldVirtualizeToolDiff(exact)).toBe(false)
+  })
+})
diff --git a/packages/app/src/pages/session/message-timeline.bug407008.test.ts b/packages/app/src/pages/session/message-timeline.bug407008.test.ts
new file mode 100644
index 00000000..24b581ac
--- /dev/null
+++ b/packages/app/src/pages/session/message-timeline.bug407008.test.ts
@@ -0,0 +1,369 @@
+/**
+ * BUG-407-008 — spec §7.2 App projection deterministic regression tests (scenarios 18-29,
+ * timeline-layer subset: 18, 19, 26, 27, 28, 29).
+ *
+ * Harness/fixture style mirrors ./message-timeline.data.test.ts (same `@deepagent-code/ui/message-part`
+ * mock, same `Timeline.constructMessageRows` invocation shape).
+ *
+ * Fix-E (spec §5 Fix-E — per-Activity latest-revision convergence) is RESTORED here: commit
+ * 1ae96499 ("fix(app): preserve activity progress history") had removed it, but the adjudicated
+ * decision is to converge to the latest revision (hide superseded older revisions). These tests
+ * assert the spec-compliant convergence behavior.
+ */
+import { afterAll, describe, expect, mock, spyOn, test } from "bun:test"
+import type { AssistantMessage, Part, UserMessage } from "@deepagent-code/sdk/v2/client"
+import type { TimelineRow } from "./message-timeline.data"
+
+mock.module("@deepagent-code/ui/message-part", () => ({
+  groupParts: (refs: { messageID: string; part: Part }[]) =>
+    refs.map((item) => ({
+      key: `part:${item.messageID}:${item.part.id}`,
+      type: "part",
+      ref: { messageID: item.messageID, partID: item.part.id },
+    })),
+  renderable: (part: Part, showReasoningSummaries = true) =>
+    part.type !== "reasoning" || showReasoningSummaries,
+}))
+
+afterAll(() => mock.restore())
+
+// ---------------------------------------------------------------------------
+// Precise incident fixture (docs/bug-407-008.md §2.1/§2.2):
+//   activity  a6d06b2a...c5e5a9
+//   revision 8  msg_ff200fab7001lSTuDLJcykJfn6  reasoning prt_ff2010818001nSfs68M6HUBq2E
+//               + tool call tool_sd47zQa3WQeOSa1BKPhv6mF1 (bash, ordinal 548)
+//   revision 9  msg_ff2015000001RBapgqkQdqoqQI  reasoning prt_ff2015c8e00132UPp8LegJCQQ0
+//               + tool call tool_ZSTCdihDT0jY74tJVeAZLZ45 (bash, ordinal 549)
+//   revision 10 msg_ff2019410001interrupted      zero renderable parts, state=interrupted
+// Both reasoning texts are 1,668 chars and byte-identical (SHA-256 5bc40233...d37b).
+// ---------------------------------------------------------------------------
+
+const INCIDENT_ACTIVITY = "a6d06b2a82ef234ab9dc71e3fd940292a21b34f4732f28aa19ba8416c4c5e5a9"
+// Representative verbatim-identical reasoning body (real incident text is 1,668 chars).
+const INCIDENT_REASONING = `Check the stress log tail and whether w70_stress is still running. ${"user0/user1/user3 FINAL observed; user2 FINAL still missing. ".repeat(20)}`.trim()
+
+const user = {
+  id: "msg_user_incident",
+  sessionID: "ses_0149b8afffffWlu80cVGdzFI9s",
+  role: "user",
+  agent: "build",
+  model: { providerID: "deepseek", modelID: "deepseek-chat" },
+  time: { created: 1 },
+} as UserMessage
+
+const assistant = (id: string, activityProgress?: AssistantMessage["activityProgress"]) =>
+  ({
+    id,
+    sessionID: user.sessionID,
+    parentID: user.id,
+    role: "assistant",
+    mode: "build",
+    agent: "build",
+    modelID: "deepseek-chat",
+    providerID: "deepseek",
+    path: { cwd: "/project", root: "/project" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    time: { created: 1, completed: 2 },
+    finish: "tool-calls",
+    activityProgress,
+  }) as AssistantMessage
+
+const reasoningPart = (messageID: string, id: string, text: string) =>
+  ({ id, sessionID: user.sessionID, messageID, type: "reasoning", text }) as Part
+
+const toolPart = (messageID: string, id: string, callID: string, command: string) =>
+  ({
+    id,
+    sessionID: user.sessionID,
+    messageID,
+    type: "tool",
+    callID,
+    tool: "bash",
+    state: {
+      status: "completed",
+      input: { command },
+      output: command,
+      title: command,
+      metadata: {},
+      time: { start: 1, end: 2 },
+    },
+  }) as Part
+
+const legacyMarkerPart = (
+  messageID: string,
+  id: string,
+  text: string,
+  marker: { activity_id: string; revision: number; state: string },
+) =>
+  ({
+    id,
+    sessionID: user.sessionID,
+    messageID,
+    type: "text",
+    text,
+    metadata: { deepagent_activity_progress: marker },
+  }) as Part
+
+const partIDs = (rows: TimelineRow.TimelineRow[]): string[] =>
+  rows.flatMap((row) => (row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : []))
+
+describe("BUG-407-008 §7.2 App projection — incident fixture (timeline layer)", () => {
+  test("18: precise incident fixture — revision 8/9 reasoning+tool with identical reasoning", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    // Spec §7.2 (18): with Fix-E restored, the App shows ONLY the latest revision's (9) renderable
+    // parts; the superseded revision 8 (identical reasoning + earlier tool) is hidden.
+    const msg8 = assistant("msg_ff200fab7001lSTuDLJcykJfn6", {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 8,
+      state: "progress",
+    })
+    const msg9 = assistant("msg_ff2015000001RBapgqkQdqoqQI", {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 9,
+      state: "progress",
+    })
+    const parts = new Map<string, Part[]>([
+      [
+        msg8.id,
+        [
+          reasoningPart(msg8.id, "prt_ff2010818001nSfs68M6HUBq2E", INCIDENT_REASONING),
+          toolPart(msg8.id, "prt_tool_rev8", "tool_sd47zQa3WQeOSa1BKPhv6mF1", "tail stress.log; pgrep w70_stress"),
+        ],
+      ],
+      [
+        msg9.id,
+        [
+          // Verbatim-identical reasoning text (SHA-256 match in the real incident).
+          reasoningPart(msg9.id, "prt_ff2015c8e00132UPp8LegJCQQ0", INCIDENT_REASONING),
+          toolPart(msg9.id, "prt_tool_rev9", "tool_ZSTCdihDT0jY74tJVeAZLZ45", "tail stress.log; wait user2 FINAL"),
+        ],
+      ],
+    ])
+
+    const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], [msg8, msg9], 0, true, "idle", false)
+    const visible = partIDs(rows)
+
+    // Only the latest revision (9) renders; superseded revision 8 is hidden.
+    expect(visible).toContain("prt_ff2015c8e00132UPp8LegJCQQ0")
+    expect(visible).toContain("prt_tool_rev9")
+    expect(visible).not.toContain("prt_ff2010818001nSfs68M6HUBq2E")
+    expect(visible).not.toContain("prt_tool_rev8")
+    expect(visible).toEqual(["prt_ff2015c8e00132UPp8LegJCQQ0", "prt_tool_rev9"])
+  })
+
+  test("19: terminal revision 10 has zero parts and state=interrupted", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    // Spec §7.2 (19): with Fix-E restored, once the zero-part terminal revision 10 (interrupted)
+    // arrives, it supersedes revisions 8/9 (terminal beats non-terminal), so 8/9 are fully hidden;
+    // the zero-part terminal contributes no part rows of its own. The interrupted TurnDivider
+    // contract stays driven by MessageAbortedError (existing UI preserved).
+    const msg8 = assistant("msg_ff200fab7001lSTuDLJcykJfn6", {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 8,
+      state: "progress",
+    })
+    const msg9 = assistant("msg_ff2015000001RBapgqkQdqoqQI", {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 9,
+      state: "progress",
+    })
+    const msg10 = assistant("msg_ff2019410001interrupted", {
+      activityID: INCIDENT_ACTIVITY,
+      revision: 10,
+      state: "interrupted",
+      terminalReason: "user_abort",
+    })
+    const parts = new Map<string, Part[]>([
+      [
+        msg8.id,
+        [
+          reasoningPart(msg8.id, "prt_ff2010818001nSfs68M6HUBq2E", INCIDENT_REASONING),
+          toolPart(msg8.id, "prt_tool_rev8", "tool_sd47zQa3WQeOSa1BKPhv6mF1", "tail stress.log"),
+        ],
+      ],
+      [
+        msg9.id,
+        [
+          reasoningPart(msg9.id, "prt_ff2015c8e00132UPp8LegJCQQ0", INCIDENT_REASONING),
+          toolPart(msg9.id, "prt_tool_rev9", "tool_ZSTCdihDT0jY74tJVeAZLZ45", "tail stress.log again"),
+        ],
+      ],
+      // revision 10: zero parts on purpose (provider-backed interrupted row).
+      [msg10.id, []],
+    ])
+
+    const rows = Timeline.constructMessageRows(
+      user,
+      (id) => parts.get(id) ?? [],
+      [msg8, msg9, msg10],
+      0,
+      true,
+      "idle",
+      false,
+    )
+    const visible = partIDs(rows)
+
+    // Revision 8/9 are hidden once the terminal revision 10 arrives; nothing renderable remains.
+    expect(visible).toEqual([])
+    // The zero-part terminal message contributes no part rows ...
+    expect(rows.some((row) => row._tag === "AssistantPart" && row.group.key.includes(msg10.id))).toBe(false)
+    // ... and (without a MessageAbortedError) no extra "interrupted" divider is synthesized:
+    // the existing interrupted UI contract is driven solely by MessageAbortedError.
+    expect(rows.filter((row) => row._tag === "TurnDivider" && row.label === "interrupted")).toEqual([])
+  })
+
+  test("26: a message with multiple reasoning/text/tool parts is shown or hidden as a whole group", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    // DEV-407008-E3: spec §7.2 (26) requires whole-group show/hide and forbids hiding only the
+    // part whose text matches a marker. Fix-E removal means NOTHING is hidden today, which
+    // trivially satisfies "no partial hiding": every part of the group is rendered together.
+    const message = assistant("msg_group", {
+      activityID: "activity-group",
+      revision: 3,
+      state: "progress",
+    })
+    const parts = new Map<string, Part[]>([
+      [
+        message.id,
+        [
+          reasoningPart(message.id, "prt_group_reasoning", INCIDENT_REASONING),
+          legacyMarkerPart(message.id, "prt_group_marker", `revision 3`, {
+            activity_id: "activity-group",
+            revision: 3,
+            state: "progress",
+          }),
+          {
+            id: "prt_group_text",
+            sessionID: user.sessionID,
+            messageID: message.id,
+            type: "text",
+            text: INCIDENT_REASONING, // same body as the reasoning part — must NOT be singled out
+          } as Part,
+          toolPart(message.id, "prt_group_tool", "call_group", "ls -la"),
+        ],
+      ],
+    ])
+
+    const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], [message], 0, true, "idle", false)
+    const visible = partIDs(rows)
+
+    // Whole-group visibility: all four parts render; no part is individually hidden.
+    expect(visible).toEqual(["prt_group_reasoning", "prt_group_marker", "prt_group_text", "prt_group_tool"])
+  })
+
+  test("27: identical reasoning text in two different Activities shows in both (no cross-activity dedup)", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    const first = assistant("msg_activity_a", { activityID: "activity-A", revision: 0, state: "progress" })
+    const second = assistant("msg_activity_b", { activityID: "activity-B", revision: 0, state: "progress" })
+    const parts = new Map<string, Part[]>([
+      [first.id, [reasoningPart(first.id, "prt_reasoning_A", INCIDENT_REASONING)]],
+      // Byte-identical reasoning text in a DIFFERENT activity.
+      [second.id, [reasoningPart(second.id, "prt_reasoning_B", INCIDENT_REASONING)]],
+    ])
+
+    const rows = Timeline.constructMessageRows(
+      user,
+      (id) => parts.get(id) ?? [],
+      [first, second],
+      0,
+      true,
+      "idle",
+      false,
+    )
+    const visible = partIDs(rows)
+
+    // Both activities keep their reasoning — content-hash dedup across activities never happens.
+    expect(visible).toEqual(["prt_reasoning_A", "prt_reasoning_B"])
+  })
+
+  test("28: legacy server with text-metadata markers only (no computed projection)", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    // Spec §7.2 (28): with Fix-E restored, legacy text-metadata markers (no computed
+    // `activityProgress` on messages) still converge per the old rules — the latest revision wins.
+    const first = assistant("msg_legacy_0")
+    const second = assistant("msg_legacy_1")
+    const parts = new Map<string, Part[]>([
+      [
+        first.id,
+        [
+          legacyMarkerPart(first.id, "prt_legacy_marker_0", "revision 0", {
+            activity_id: "activity-legacy",
+            revision: 0,
+            state: "progress",
+          }),
+        ],
+      ],
+      [
+        second.id,
+        [
+          legacyMarkerPart(second.id, "prt_legacy_marker_1", "revision 1", {
+            activity_id: "activity-legacy",
+            revision: 1,
+            state: "progress",
+          }),
+        ],
+      ],
+    ])
+
+    const rows = Timeline.constructMessageRows(
+      user,
+      (id) => parts.get(id) ?? [],
+      [first, second],
+      0,
+      false,
+      "idle",
+      false,
+    )
+    const visible = partIDs(rows)
+
+    // Legacy markers converge: the latest revision (1) is shown, the superseded revision (0) hidden.
+    expect(visible).toEqual(["prt_legacy_marker_1"])
+  })
+
+  test("29: message projection vs legacy marker conflict — projection source wins; diagnostic status", async () => {
+    const { Timeline } = await import("./message-timeline.data")
+    // Spec §7.2 (29): with Fix-E restored, the message-owned projection wins over a conflicting
+    // legacy text marker, and a projection-conflict diagnostic is emitted (console.error).
+    const errorSpy = spyOn(console, "error")
+    try {
+      const message = assistant("msg_conflict", {
+        activityID: "activity-conflict",
+        revision: 9, // message-owned projection says revision 9
+        state: "progress",
+      })
+      const parts = new Map<string, Part[]>([
+        [
+          message.id,
+          [
+            // Legacy marker disagrees: same activity but revision 8.
+            legacyMarkerPart(message.id, "prt_conflict_marker", "revision 8", {
+              activity_id: "activity-conflict",
+              revision: 8,
+              state: "progress",
+            }),
+            reasoningPart(message.id, "prt_conflict_reasoning", INCIDENT_REASONING),
+          ],
+        ],
+      ])
+
+      const rows = Timeline.constructMessageRows(
+        user,
+        (id) => parts.get(id) ?? [],
+        [message],
+        0,
+        true,
+        "idle",
+        false,
+      )
+      const visible = partIDs(rows)
+
+      // The owning message's parts are rendered (projection-bearing message is not dropped).
+      expect(visible).toEqual(["prt_conflict_marker", "prt_conflict_reasoning"])
+      // The projection-vs-legacy-marker conflict is diagnosed at the timeline layer.
+      expect(errorSpy).toHaveBeenCalled()
+    } finally {
+      errorSpy.mockRestore()
+    }
+  })
+})
diff --git a/packages/app/src/pages/session/message-timeline.data.test.ts b/packages/app/src/pages/session/message-timeline.data.test.ts
index 2206a80b..a2a64d49 100644
--- a/packages/app/src/pages/session/message-timeline.data.test.ts
+++ b/packages/app/src/pages/session/message-timeline.data.test.ts
@@ -8,8 +8,7 @@ mock.module("@deepagent-code/ui/message-part", () => ({
       type: "part",
       ref: { messageID: item.messageID, partID: item.part.id },
     })),
-  renderable: (part: Part, showReasoningSummaries = true) =>
-    part.type !== "reasoning" || showReasoningSummaries,
+  renderable: () => true,
 }))
 
 afterAll(() => mock.restore())
@@ -123,7 +122,7 @@ describe("message timeline activity progress", () => {
       },
     }) as Part
 
-  test("renders every progress revision for one activity", async () => {
+  test("shows only the latest settled progress for one activity", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const messages = [assistant("msg_a0"), assistant("msg_a1")]
     const parts = new Map([
@@ -134,10 +133,10 @@ describe("message timeline activity progress", () => {
     const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], messages, 0, false, "idle", false)
     expect(
       rows.flatMap((row) => (row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [])),
-    ).toEqual(["prt_progress_0", "prt_progress_1"])
+    ).toEqual(["prt_progress_1"])
   })
 
-  test("keeps progress revisions when the activity final arrives", async () => {
+  test("replaces settled progress with the activity final", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const messages = [assistant("msg_a0"), assistant("msg_a1"), { ...assistant("msg_a2"), finish: "stop" }]
     const parts = new Map([
@@ -149,10 +148,10 @@ describe("message timeline activity progress", () => {
     const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], messages, 0, false, "idle", false)
     expect(
       rows.flatMap((row) => (row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [])),
-    ).toEqual(["prt_progress_0", "prt_progress_1", "prt_final_2"])
+    ).toEqual(["prt_final_2"])
   })
 
-  test("keeps text parts across separate parent user rows", async () => {
+  test("collapses every text part in one activity across separate parent user rows", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const user2 = { ...user, id: "msg_user_2" }
     const firstAssistant = assistant("msg_cross_a0")
@@ -174,6 +173,7 @@ describe("message timeline activity progress", () => {
       ],
     ])
     const getParts = (id: string) => parts.get(id) ?? []
+    const visibility = Timeline.activityProgressVisibility(messages, getParts)
     const firstRows = Timeline.constructMessageRows(
       user,
       getParts,
@@ -182,6 +182,7 @@ describe("message timeline activity progress", () => {
       false,
       "idle",
       false,
+      visibility,
     )
     const secondRows = Timeline.constructMessageRows(
       user2,
@@ -191,12 +192,9 @@ describe("message timeline activity progress", () => {
       false,
       "idle",
       false,
+      visibility,
     )
-    expect(
-      firstRows.flatMap((row) =>
-        row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [],
-      ),
-    ).toEqual(["prt_progress_0", "prt_cross_old_plain"])
+    expect(firstRows.some((row) => row._tag === "AssistantPart")).toBe(false)
     expect(
       secondRows.flatMap((row) =>
         row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [],
@@ -204,7 +202,7 @@ describe("message timeline activity progress", () => {
     ).toEqual(["prt_progress_1", "prt_cross_latest_plain"])
   })
 
-  test("keeps every text part in every revision", async () => {
+  test("applies one revision marker to every text part in the assistant message", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const messages = [assistant("msg_multi_a0"), { ...assistant("msg_multi_a1"), finish: "stop" }]
     const plain = (messageID: string, id: string, text: string) =>
@@ -221,10 +219,10 @@ describe("message timeline activity progress", () => {
 
     expect(
       rows.flatMap((row) => (row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [])),
-    ).toEqual(["prt_progress_0", "prt_old_plain", "prt_final_1", "prt_final_plain"])
+    ).toEqual(["prt_final_1", "prt_final_plain"])
   })
 
-  test("keeps reasoning summaries from every revision when enabled", async () => {
+  test("uses the message marker to collapse reasoning-only revisions", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const messages = [
       {
@@ -247,34 +245,19 @@ describe("message timeline activity progress", () => {
 
     expect(
       rows.flatMap((row) => (row._tag === "AssistantPart" && row.group.type === "part" ? [row.group.ref.partID] : [])),
-    ).toEqual(["prt_reasoning_old", "prt_reasoning_latest"])
+    ).toEqual(["prt_reasoning_latest"])
   })
 
-  test("uses showReasoning as the explicit reasoning visibility control", async () => {
-    const { Timeline } = await import("./message-timeline.data")
-    const message = assistant("msg_reasoning_setting")
-    const reasoning = {
-      id: "prt_reasoning_setting",
-      sessionID: user.sessionID,
-      messageID: message.id,
-      type: "reasoning",
-      text: "summary",
-    } as Part
-    const getParts = () => [reasoning]
-
-    const hidden = Timeline.constructMessageRows(user, getParts, [message], 0, false, "idle", false)
-    const shown = Timeline.constructMessageRows(user, getParts, [message], 0, true, "idle", false)
-
-    expect(hidden.some((row) => row._tag === "AssistantPart")).toBe(false)
-    expect(shown.some((row) => row._tag === "AssistantPart")).toBe(true)
-  })
-
-  test("keeps an older tool revision when a later terminal message has no renderable parts", async () => {
+  test("hides an older tool revision when the latest terminal message has no renderable parts", async () => {
     const { Timeline } = await import("./message-timeline.data")
     const old = {
       ...assistant("msg_tool_old"),
       activityProgress: { activityID: "activity-tool", revision: 0, state: "progress" as const },
     }
+    const terminal = {
+      ...assistant("msg_tool_terminal"),
+      activityProgress: { activityID: "activity-tool", revision: 1, state: "final" as const },
+    }
     const tool = {
       id: "prt_tool_old",
       sessionID: user.sessionID,
@@ -285,8 +268,10 @@ describe("message timeline activity progress", () => {
       state: { status: "completed", input: {}, output: "pending", title: "poll", time: { start: 1, end: 2 } },
     } as Part
     const parts = new Map([[old.id, [tool]]])
-    const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], [old], 0, true, "idle", false)
+    const visibility = Timeline.activityProgressVisibility([old, terminal], (id) => parts.get(id) ?? [])
+
+    const rows = Timeline.constructMessageRows(user, (id) => parts.get(id) ?? [], [old], 0, true, "idle", false, visibility)
 
-    expect(rows.some((row) => row._tag === "AssistantPart")).toBe(true)
+    expect(rows.some((row) => row._tag === "AssistantPart")).toBe(false)
   })
 })
diff --git a/packages/app/src/pages/session/message-timeline.data.ts b/packages/app/src/pages/session/message-timeline.data.ts
index cf4b98d9..ea793845 100644
--- a/packages/app/src/pages/session/message-timeline.data.ts
+++ b/packages/app/src/pages/session/message-timeline.data.ts
@@ -147,6 +147,7 @@ export namespace Timeline {
     showReasoning: boolean,
     status: SessionStatus["type"],
     isActive: boolean,
+    activityProgressVisibility?: ReadonlySet<string>,
   ) {
     const rows: TimelineRow.TimelineRow[] = []
 
@@ -158,10 +159,14 @@ export namespace Timeline {
     const interrupted = interruptedMessageIndex !== -1
     const error = assistantMessages.find((m) => m.error && m.error.name !== "MessageAbortedError")?.error
 
-    const assistantPartRefs = assistantMessages.flatMap((message, messageIndex) =>
-      getMessageParts(message.id)
-        .filter((part) => renderable(part, showReasoning))
-        .map((part) => ({ messageID: message.id, messageIndex, part })),
+    const assistantPartRefs = latestActivityProgress(
+      assistantMessages,
+      assistantMessages.flatMap((message, messageIndex) =>
+        getMessageParts(message.id)
+          .filter((part) => renderable(part, showReasoning))
+          .map((part) => ({ messageID: message.id, messageIndex, part })),
+      ),
+      activityProgressVisibility,
     )
     const assistantItems =
       interrupted && !compaction
@@ -286,6 +291,100 @@ export namespace Timeline {
     return rows
   }
 
+  // BUG-407-008 Fix-E (restored after 1ae96499 removed it): per-Activity revision convergence. For
+  // each activityID, only the LATEST revision's parts are rendered (a terminal state beats a
+  // non-terminal one; among equal terminality the higher revision wins). Superseded older revisions
+  // are hidden, so identical reasoning re-emitted across revisions is shown once.
+  export function activityProgressVisibility(
+    assistantMessages: AssistantMessage[],
+    getMessageParts: (messageID: string) => Part[],
+  ) {
+    const refs = assistantMessages.flatMap((message, messageIndex) =>
+      getMessageParts(message.id).map((part) => ({ messageID: message.id, messageIndex, part })),
+    )
+    return new Set(latestActivityProgress(assistantMessages, refs).map((ref) => `${ref.messageID}:${ref.part.id}`))
+  }
+
+  function latestActivityProgress<T extends { messageID: string; part: Part }>(
+    assistantMessages: AssistantMessage[],
+    refs: T[],
+    visibility?: ReadonlySet<string>,
+  ) {
+    const progressByMessage = new Map<string, NonNullable<ReturnType<typeof messageActivityProgress>>>()
+    assistantMessages.forEach((message) => {
+      const marker = messageActivityProgress(message)
+      if (marker) progressByMessage.set(message.id, marker)
+    })
+    refs.forEach((ref) => {
+      const marker = partActivityProgress(ref.part)
+      const projected = progressByMessage.get(ref.messageID)
+      if (
+        marker &&
+        projected &&
+        (marker.activityID !== projected.activityID || marker.revision !== projected.revision)
+      )
+        console.error("Conflicting activity progress projection", {
+          messageID: ref.messageID,
+          projected,
+          legacy: marker,
+        })
+      if (projected) return
+      if (marker) progressByMessage.set(ref.messageID, marker)
+    })
+    const markerFor = (ref: T) => progressByMessage.get(ref.messageID) ?? partActivityProgress(ref.part)
+    if (visibility)
+      return refs.filter((ref) => {
+        if (!markerFor(ref)) return true
+        return visibility.has(`${ref.messageID}:${ref.part.id}`)
+      })
+    const selected = new Map<string, { revision: number; terminal: boolean }>()
+    progressByMessage.forEach((marker) => {
+      if (!marker) return
+      const terminal = marker.state !== "provisional" && marker.state !== "progress"
+      const current = selected.get(marker.activityID)
+      if (
+        current &&
+        ((current.terminal && !terminal) || (current.terminal === terminal && current.revision > marker.revision))
+      )
+        return
+      selected.set(marker.activityID, { revision: marker.revision, terminal })
+    })
+    return refs.filter((ref) => {
+      const marker = markerFor(ref)
+      if (!marker) return true
+      const current = selected.get(marker.activityID)
+      return (
+        current?.revision === marker.revision &&
+        current.terminal === (marker.state !== "provisional" && marker.state !== "progress")
+      )
+    })
+  }
+
+  function messageActivityProgress(message: AssistantMessage) {
+    const marker = message.activityProgress
+    if (!marker) return
+    if (!marker.activityID || !Number.isInteger(marker.revision) || marker.revision < 0) return
+    if (!["provisional", "progress", "final", "interrupted", "recovery_required", "failed"].includes(marker.state))
+      return
+    return marker
+  }
+
+  function partActivityProgress(part: Part) {
+    if (part.type !== "text") return
+    const value = part.metadata?.deepagent_activity_progress
+    if (!value || typeof value !== "object") return
+    const marker = value as Record<string, unknown>
+    if (typeof marker.activity_id !== "string" || marker.activity_id.length === 0) return
+    if (typeof marker.revision !== "number" || !Number.isInteger(marker.revision) || marker.revision < 0) return
+    if (!["provisional", "progress", "final", "interrupted", "recovery_required"].includes(String(marker.state)))
+      return
+    return {
+      activityID: marker.activity_id,
+      revision: marker.revision,
+      state: marker.state as "provisional" | "progress" | "final" | "interrupted" | "recovery_required",
+    }
+  }
+
   function isSummaryDiff(value: SnapshotFileDiff): value is SummaryDiff {
     return typeof value.file === "string"
   }
diff --git a/packages/app/src/pages/session/message-timeline.tsx b/packages/app/src/pages/session/message-timeline.tsx
index b3ee9d86..05018db1 100644
--- a/packages/app/src/pages/session/message-timeline.tsx
+++ b/packages/app/src/pages/session/message-timeline.tsx
@@ -89,6 +89,58 @@ const emptyTools: ToolPart[] = []
 const emptyAssistantMessages: AssistantMessage[] = []
 const idle = { type: "idle" as const }
 
+// ---------------------------------------------------------------------------
+// UX-001: only virtualize large, completed tool diffs.
+// ---------------------------------------------------------------------------
+
+// Threshold semantics mirror VIRTUALIZE_BYTES (500KB) in packages/ui/src/components/file.tsx.
+const TOOL_DIFF_VIRTUALIZE_BYTES = 500_000
+
+function payloadStringLength(value: unknown) {
+  return typeof value === "string" ? value.length : 0
+}
+
+// Tool parts carry no dedicated "diff size" field and we intentionally avoid adding
+// schema/persistence for this, so the size is estimated conservatively from existing
+// string payloads on the completed part:
+//   1. state.metadata.filediff before/after/patch lengths (edit tool diff source)
+//   2. state.metadata.files[].patch/diff/before/after lengths (apply_patch diff source)
+//   3. fallback: state.output length as a coarse proxy (only universally available signal)
+export function toolDiffPayloadSize(part: PartType): number {
+  if (part.type !== "tool") return 0
+  const state = part.state
+  // Streaming (pending/running) and error parts have no stable size; virtualizing them
+  // would force repeated viewer resets as content grows (see file.tsx render reset logic).
+  if (state.status !== "completed") return 0
+  const metadata: Record<string, unknown> = state.metadata
+  let size = 0
+  const filediff = metadata.filediff
+  if (filediff && typeof filediff === "object") {
+    const fd = filediff as Record<string, unknown>
+    size = Math.max(size, payloadStringLength(fd.patch), payloadStringLength(fd.before), payloadStringLength(fd.after))
+  }
+  const files = metadata.files
+  if (Array.isArray(files)) {
+    for (const item of files) {
+      if (!item || typeof item !== "object") continue
+      const file = item as Record<string, unknown>
+      size = Math.max(
+        size,
+        payloadStringLength(file.patch),
+        payloadStringLength(file.diff),
+        payloadStringLength(file.before),
+        payloadStringLength(file.after),
+      )
+    }
+  }
+  if (size === 0) size = payloadStringLength(state.output)
+  return size
+}
+
+export function shouldVirtualizeToolDiff(part: PartType): boolean {
+  return toolDiffPayloadSize(part) > TOOL_DIFF_VIRTUALIZE_BYTES
+}
+
 // ForkBanner and BottomSpacer render their own top-level container (no TimelineRowFrame, which
 // assumes a per-turn `userMessageID`), so they're excluded from the framed-row union.
 type FramedTimelineRow = Exclude<TimelineRow.TimelineRow, { _tag: "BottomSpacer" | "ForkBanner" }>
@@ -436,6 +488,10 @@ function TimelineDiffView(props: { diff: SummaryDiff }) {
 
   return (
     <div data-slot="session-turn-diff-view" data-scrollable>
+      {/* UX-001: summary diffs stay non-virtualized. SummaryDiff only carries patch/addition
+          counts (no reliable size signal), the wrapper has overflow-y:auto but no bounded
+          height, so an inner virtualizer would still share the outer row-level scroll root.
+          Keeping virtualize={false} conservatively. */}
       <Dynamic component={fileComponent} mode="diff" virtualize={false} fileDiff={view.fileDiff} />
     </div>
   )
@@ -586,6 +642,12 @@ export function MessageTimeline(props: {
   })
   const parentTitle = createMemo(() => sessionTitle(parent()?.title) ?? language.t("command.session.new"))
   const getMsgParts = (msgId: string) => sync.data.part[msgId] ?? emptyParts
+  const activityProgressVisibility = createMemo(() =>
+    Timeline.activityProgressVisibility(
+      sessionMessages().filter((message): message is AssistantMessage => message.role === "assistant"),
+      getMsgParts,
+    ),
+  )
   const childTaskDescription = createMemo(() => {
     const id = sessionID()
     if (!id) return
@@ -616,6 +678,7 @@ export function MessageTimeline(props: {
             settings.general.showReasoningSummaries(),
             sessionStatus().type,
             activeMessageID() === userMessage.id,
+            activityProgressVisibility(),
           )
 
           return reuseTimelineRows(previous, rows)
@@ -1050,6 +1113,31 @@ export function MessageTimeline(props: {
     navigate(`/${params.dir}/session`)
   }
 
+  const exportSession = async (sessionID: string) => {
+    const session = sync.session.get(sessionID)
+    const base = (session?.title || sessionID).replace(/[^\w\u4e00-\u9fff-]+/g, "-").slice(0, 60) || sessionID
+    try {
+      const res = await sdk.client.session.exportSnapshot({ sessionID }, { throwOnError: true })
+      const bundle = typeof res.data === "string" ? res.data : JSON.stringify(res.data ?? {})
+      const url = URL.createObjectURL(new Blob([bundle], { type: "application/json" }))
+      const anchor = document.createElement("a")
+      anchor.href = url
+      anchor.download = `${base}-snapshot.json`
+      document.body.appendChild(anchor)
+      anchor.click()
+      anchor.remove()
+      URL.revokeObjectURL(url)
+      showToast({
+        variant: "success",
+        icon: "circle-check",
+        title: language.t("session.export.success"),
+      })
+    } catch (err) {
+      console.error("Failed to export session snapshot", err)
+      showToast({ title: language.t("common.requestFailed") })
+    }
+  }
+
   const archiveSession = async (sessionID: string) => {
     const session = sync.session.get(sessionID)
     if (!session) return
@@ -1304,7 +1392,8 @@ export function MessageTimeline(props: {
                 toolOpen={toolOpen[part().id] ?? defaultOpen()}
                 onToolOpenChange={(open) => setToolOpen(part().id, open)}
                 deferToolContent={false}
-                virtualizeDiff={false}
+                // UX-001: only completed + large tool diffs get virtualized; streaming parts stay false.
+                virtualizeDiff={shouldVirtualizeToolDiff(part())}
                 onFork={props.actions?.fork}
               />
             )}
@@ -1816,6 +1905,9 @@ export function MessageTimeline(props: {
                                 </DropdownMenu.ItemLabel>
                               </DropdownMenu.Item>
                             </Show>
+                            <DropdownMenu.Item onSelect={() => void exportSession(id)}>
+                              <DropdownMenu.ItemLabel>{language.t("session.export.action")}</DropdownMenu.ItemLabel>
+                            </DropdownMenu.Item>
                             <DropdownMenu.Item onSelect={() => void archiveSession(id)}>
                               <DropdownMenu.ItemLabel>{language.t("common.archive")}</DropdownMenu.ItemLabel>
                             </DropdownMenu.Item>
diff --git a/packages/app/src/pages/session/session-side-panel.tsx b/packages/app/src/pages/session/session-side-panel.tsx
index 9a3e7695..2332de65 100644
--- a/packages/app/src/pages/session/session-side-panel.tsx
+++ b/packages/app/src/pages/session/session-side-panel.tsx
@@ -43,6 +43,7 @@ import { SidePanelDebug } from "@/pages/session/side-panel-debug"
 import { SidePanelProfile } from "@/pages/session/side-panel-profile"
 import { SidePanelIM } from "@/pages/session/side-panel-im"
 import { SidePanelContext } from "@/pages/session/side-panel-context"
+import { SidePanelStats } from "@/pages/session/side-panel-stats"
 import { SidePanelDockHeader, SidePanelTerminal, SidePanelDebugConsole } from "@/pages/session/side-panel-terminal"
 import { ProblemsPanel } from "@/pages/session/problems-panel"
 import { PanelErrorBoundary } from "@/pages/session/panel-error-boundary"
@@ -65,6 +66,7 @@ type PanelMode =
   | "plugins"
   | "debug"
   | "profile"
+  | "stats"
   | "terminal"
   | "debug-console"
   | "problems"
@@ -117,6 +119,8 @@ const PANELS: readonly PanelDef[] = [
   { mode: "plugins", icon: "plugin", titleKey: "status.popover.tab.plugins", group: "dev", bucket: "narrow" },
   { mode: "debug", icon: "debug", titleKey: "session.panel.debug", group: "dev", bucket: "narrow" },
   { mode: "profile", icon: "profile", titleKey: "session.panel.profile", group: "dev", bucket: "narrow" },
+  // PARITY-001: cross-session cost/token overview aggregated from the synced session store.
+  { mode: "stats", icon: "dash", titleKey: "session.stats.title", group: "dev", bucket: "narrow" },
   // Dock — the movable panels; only surface here when docked to the side (see gating below).
   {
     mode: "terminal",
@@ -693,6 +697,9 @@ export function SessionSidePanel(props: {
                 <Match when={isActive("profile")}>
                   <SidePanelProfile onClose={closePanel} />
                 </Match>
+                <Match when={isActive("stats")}>
+                  <SidePanelStats onClose={closePanel} />
+                </Match>
                 <Match when={isActive("im")}>
                   <SidePanelIM onClose={closePanel} />
                 </Match>
diff --git a/packages/app/src/pages/session/side-panel-stats.tsx b/packages/app/src/pages/session/side-panel-stats.tsx
new file mode 100644
index 00000000..63ac6ff9
--- /dev/null
+++ b/packages/app/src/pages/session/side-panel-stats.tsx
@@ -0,0 +1,129 @@
+// PARITY-001: GUI cross-session cost/token overview.
+//
+// The CLI `stats` command aggregates the whole database in-process; the GUI only had per-session
+// context diagnostics (side-panel-context.tsx). This panel aggregates the sessions already synced
+// into the directory store (sync.data.session — the same list the session drawer renders) into a
+// per-session cost/token/model overview. Zero new API endpoints: the SDK Session type carries
+// `cost`, `tokens` and `model` rollups.
+import { Icon } from "@deepagent-code/ui/icon"
+import { IconButton } from "@deepagent-code/ui/icon-button"
+import { For, Show, createMemo, type Component, type JSX } from "solid-js"
+import { useLanguage } from "@/context/language"
+import { useSync } from "@/context/sync"
+import {
+  aggregateSessionStats,
+  formatCost,
+  formatTokenCount,
+  sortModelUsage,
+} from "@/utils/session-stats"
+
+export const SidePanelStats: Component<{ onClose: () => void }> = (props) => {
+  const sync = useSync()
+  const language = useLanguage()
+
+  // The synced session list for the current directory; events keep it live, so the memo
+  // re-aggregates automatically as session cost/tokens rollups update.
+  const stats = createMemo(() => aggregateSessionStats(sync.data.session))
+  const models = createMemo(() => sortModelUsage(stats().modelUsage))
+
+  const Row = (row: { label: string; value: string }) => (
+    <div class="py-1 flex items-center gap-2 text-11-regular">
+      <span class="flex-1 min-w-0 text-text-weak truncate">{row.label}</span>
+      <span class="shrink-0 text-text-strong font-mono">{row.value}</span>
+    </div>
+  )
+
+  const Section = (section: { title: string; children?: JSX.Element }) => (
+    <div class="px-3 py-2.5 border-b border-border-weaker-base">
+      <div class="text-11-medium text-text-weak uppercase">{section.title}</div>
+      <div class="mt-1.5">{section.children}</div>
+    </div>
+  )
+
+  return (
+    <section class="size-full min-w-0 flex flex-col overflow-hidden bg-background-base" data-testid="side-panel-stats">
+      <header class="h-10 shrink-0 px-2 flex items-center gap-2 border-b border-border-weaker-base">
+        <Icon name="dash" size="small" class="text-icon-base" />
+        <div class="min-w-0 flex-1 text-13-medium text-text-strong truncate">
+          {language.t("session.stats.title")}
+        </div>
+        <IconButton
+          icon="close-small"
+          variant="ghost"
+          class="h-7 w-7 rounded-md"
+          onClick={props.onClose}
+          aria-label={language.t("common.close")}
+        />
+      </header>
+
+      <div class="flex-1 min-h-0 overflow-y-auto">
+        <Show
+          when={stats().totalSessions > 0}
+          fallback={<div class="p-3 text-13-regular text-text-weak">{language.t("session.stats.noData")}</div>}
+        >
+          <Section title={language.t("session.stats.overview")}>
+            <Row label={language.t("session.stats.sessions")} value={stats().totalSessions.toLocaleString()} />
+            <Row label={language.t("session.stats.days")} value={String(stats().days)} />
+          </Section>
+
+          <Section title={language.t("session.stats.costTokens")}>
+            <Row label={language.t("session.stats.totalCost")} value={formatCost(stats().totalCost)} />
+            <Row label={language.t("session.stats.costPerDay")} value={formatCost(stats().costPerDay)} />
+            <Row
+              label={language.t("session.stats.tokensPerSession")}
+              value={formatTokenCount(stats().tokensPerSession)}
+            />
+            <Row
+              label={language.t("session.stats.medianTokens")}
+              value={formatTokenCount(stats().medianTokensPerSession)}
+            />
+            <Row label={language.t("session.stats.input")} value={formatTokenCount(stats().totalTokens.input)} />
+            <Row label={language.t("session.stats.output")} value={formatTokenCount(stats().totalTokens.output)} />
+            <Row
+              label={language.t("session.stats.reasoning")}
+              value={formatTokenCount(stats().totalTokens.reasoning)}
+            />
+            <Row
+              label={language.t("session.stats.cacheRead")}
+              value={formatTokenCount(stats().totalTokens.cache.read)}
+            />
+            <Row
+              label={language.t("session.stats.cacheWrite")}
+              value={formatTokenCount(stats().totalTokens.cache.write)}
+            />
+          </Section>
+
+          <Show when={models().length > 0}>
+            <Section title={`${language.t("session.stats.modelUsage")} · ${models().length}`}>
+              <For each={models()}>
+                {([model, usage]) => (
+                  <div class="py-1.5 border-t border-border-weaker-base first:border-t-0 first:pt-0">
+                    <div class="flex items-center gap-2">
+                      <span class="flex-1 min-w-0 text-11-medium text-text-strong truncate" title={model}>
+                        {model}
+                      </span>
+                      <span class="shrink-0 text-10-regular text-text-weaker font-mono">
+                        {formatCost(usage.cost, 4)}
+                      </span>
+                    </div>
+                    <div class="mt-0.5 flex items-center gap-2 text-10-regular text-text-weaker">
+                      <span>
+                        {language.t("session.stats.sessions")}: {usage.sessions.toLocaleString()}
+                      </span>
+                      <span class="font-mono">
+                        {formatTokenCount(usage.tokens.input)}↑ {formatTokenCount(usage.tokens.output)}↓
+                      </span>
+                      <span class="ml-auto font-mono">
+                        {language.t("session.stats.cacheRead")} {formatTokenCount(usage.tokens.cache.read)}
+                      </span>
+                    </div>
+                  </div>
+                )}
+              </For>
+            </Section>
+          </Show>
+        </Show>
+      </div>
+    </section>
+  )
+}
diff --git a/packages/app/src/utils/message-order.test.ts b/packages/app/src/utils/message-order.test.ts
new file mode 100644
index 00000000..85927655
--- /dev/null
+++ b/packages/app/src/utils/message-order.test.ts
@@ -0,0 +1,98 @@
+import { describe, expect, test } from "bun:test"
+import type { Message, Part } from "@deepagent-code/sdk/v2/client"
+import {
+  compareMessages,
+  compareParts,
+  findMessageIndex,
+  locateMessage,
+  locatePart,
+  messageOrderKey,
+  messageTime,
+  partOrderKey,
+  partTime,
+} from "./message-order"
+
+// Regression fixture from BUG-407-012: the 26th wrap of the 6-byte ID time field happened on
+// 2026-08-14, so the chronologically NEWER message carries a lexicographically SMALLER ID.
+const WRAP_OLD_ID = "msg_ffa88f0840015Xj7vIrcdNEJJB" // 2026-08-13 17:51:46, before the wrap
+const WRAP_NEW_ID = "msg_00d62a3c4001KqYw3o8wBBH6qm" // 2026-08-17 09:42:43, after the wrap
+const WRAP_OLD_TIME = 1786614706000
+const WRAP_NEW_TIME = 1786930963000
+
+const userMessage = (id: string, created: number) =>
+  ({
+    id,
+    sessionID: "ses_1",
+    role: "user",
+    time: { created },
+    agent: "assistant",
+    model: { providerID: "openai", modelID: "gpt" },
+  }) as Message
+
+const textPart = (id: string, start?: number) =>
+  ({
+    id,
+    sessionID: "ses_1",
+    messageID: "msg_1",
+    type: "text",
+    text: id,
+    ...(start === undefined ? {} : { time: { start } }),
+  }) as Part
+
+describe("message order (BUG-407-012 root cause B)", () => {
+  test("orders messages by time.created first, then by ID", () => {
+    const older = userMessage(WRAP_OLD_ID, WRAP_OLD_TIME)
+    const newer = userMessage(WRAP_NEW_ID, WRAP_NEW_TIME)
+    expect(WRAP_NEW_ID < WRAP_OLD_ID).toBe(true) // sanity: raw ID order is reversed
+    expect(compareMessages(newer, older)).toBeGreaterThan(0)
+    expect(compareMessages(older, newer)).toBeLessThan(0)
+    expect(messageOrderKey(older) < messageOrderKey(newer)).toBe(true)
+    expect([newer, older].sort((a, b) => compareMessages(a, b)).map((m) => m.id)).toEqual([
+      WRAP_OLD_ID,
+      WRAP_NEW_ID,
+    ])
+  })
+
+  test("falls back to ID order when time.created is equal or missing", () => {
+    const a = userMessage("msg_a", 5)
+    const b = userMessage("msg_b", 5)
+    expect(compareMessages(a, b)).toBeLessThan(0)
+    expect(messageTime({ id: "msg_x" })).toBe(0)
+    expect(compareMessages({ id: "msg_x" }, a)).toBeLessThan(0) // missing time sorts earliest
+  })
+
+  test("locates a wrapped newer message at the tail, never at the head", () => {
+    const sorted = [userMessage(WRAP_OLD_ID, WRAP_OLD_TIME)]
+    const insert = locateMessage(sorted, userMessage(WRAP_NEW_ID, WRAP_NEW_TIME))
+    expect(insert).toEqual({ found: false, index: 1 })
+    const existing = locateMessage(sorted, userMessage(WRAP_OLD_ID, WRAP_OLD_TIME))
+    expect(existing).toEqual({ found: true, index: 0 })
+    expect(findMessageIndex(sorted, WRAP_OLD_ID)).toBe(0)
+  })
+
+  test("locateMessage finds an item by identity even when its time differs", () => {
+    const sorted = [userMessage(WRAP_OLD_ID, WRAP_OLD_TIME)]
+    const drifted = locateMessage(sorted, { id: WRAP_OLD_ID, time: { created: 1 } })
+    expect(drifted).toEqual({ found: true, index: 0 })
+  })
+})
+
+describe("part order (BUG-407-012 root cause B)", () => {
+  test("orders parts by time.start first, then by ID", () => {
+    const older = textPart("prt_ffa88f084001aaaa", WRAP_OLD_TIME)
+    const newer = textPart("prt_00d62a3c4001bbbb", WRAP_NEW_TIME)
+    expect(newer.id < older.id).toBe(true) // sanity: raw ID order is reversed
+    expect(compareParts(newer, older)).toBeGreaterThan(0)
+    expect(partOrderKey(older) < partOrderKey(newer)).toBe(true)
+    expect([newer, older].sort((a, b) => compareParts(a, b)).map((p) => p.id)).toEqual([older.id, newer.id])
+  })
+
+  test("parts without time.start fall back to 0 and locate by identity", () => {
+    const timeless = textPart("prt_tool")
+    expect(partTime(timeless)).toBe(0)
+    const timed = textPart("prt_aaaa", WRAP_OLD_TIME)
+    expect(compareParts(timeless, timed)).toBeLessThan(0)
+    const located = locatePart([timeless], { ...timed, id: "prt_tool" })
+    expect(located.found).toBe(true)
+  })
+})
diff --git a/packages/app/src/utils/message-order.ts b/packages/app/src/utils/message-order.ts
new file mode 100644
index 00000000..64af1145
--- /dev/null
+++ b/packages/app/src/utils/message-order.ts
@@ -0,0 +1,87 @@
+import { Binary } from "@deepagent-code/core/util/binary"
+
+// BUG-407-012 root cause B: opaque IDs encode a 36-bit millisecond timestamp that wraps every
+// 2^36 ms (~795 days; the 26th wrap happened on 2026-08-14). After a wrap, newly generated
+// `msg_00...` IDs sort lexicographically BEFORE older `msg_ff...` IDs, so ID order is no longer
+// chronological order. IDs must be treated as pure identity; every timeline sort / binary
+// location / "latest" decision uses the compound (time, id) order defined here instead.
+//
+// - messages order by `time.created` (missing -> 0)
+// - parts order by `time.start` (missing -> 0)
+// - the tie-break key remains the existing lexicographic ID comparison
+
+export type MessageOrderItem = { id: string; time?: { created?: number } }
+// Part `time` shapes differ across variants (`{start}` on text/reasoning, `{created}` on retry,
+// absent on tools), so the order item accepts any time shape and reads `start` defensively.
+export type PartOrderItem = { id: string; time?: Record<string, unknown> }
+
+// Millisecond epochs fit in 13 digits today; 16 keeps the fixed-width prefix sortable for eons.
+const TIME_FIELD_WIDTH = 16
+
+export const compareIDs = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
+
+const normalizeTime = (value: number | undefined) =>
+  typeof value === "number" && Number.isFinite(value) && value > 0 ? Math.trunc(value) : 0
+
+export const messageTime = (message: MessageOrderItem) => normalizeTime(message.time?.created)
+
+export const partTime = (part: PartOrderItem) => normalizeTime(part.time?.start as number | undefined)
+
+const timePrefix = (time: number) => String(time).padStart(TIME_FIELD_WIDTH, "0")
+
+// Lexicographic comparison of these keys is exactly the compound (time, id) order, so they can be
+// used with key-based Binary.search and with plain string `<`/`>` boundary checks (e.g. revert).
+export const messageOrderKey = (message: MessageOrderItem) => timePrefix(messageTime(message)) + message.id
+
+export const partOrderKey = (part: PartOrderItem) => timePrefix(partTime(part)) + part.id
+
+export const compareMessages = (a: MessageOrderItem, b: MessageOrderItem) => {
+  const delta = messageTime(a) - messageTime(b)
+  if (delta !== 0) return delta < 0 ? -1 : 1
+  return compareIDs(a.id, b.id)
+}
+
+export const compareParts = (a: PartOrderItem, b: PartOrderItem) => {
+  const delta = partTime(a) - partTime(b)
+  if (delta !== 0) return delta < 0 ? -1 : 1
+  return compareIDs(a.id, b.id)
+}
+
+export const searchMessages = <T extends MessageOrderItem>(messages: readonly T[], message: MessageOrderItem) =>
+  Binary.search(messages as unknown as MessageOrderItem[], messageOrderKey(message), (item) => messageOrderKey(item))
+
+export const searchParts = <T extends PartOrderItem>(parts: readonly T[], part: PartOrderItem) =>
+  Binary.search(parts as unknown as PartOrderItem[], partOrderKey(part), (item) => partOrderKey(item))
+
+// A bare ID carries no time, so it cannot be binary-searched in a (time, id)-ordered array.
+// Linear scans are bounded: one session's loaded messages / one message's parts.
+export const findMessageIndex = <T extends { id: string }>(messages: readonly T[], id: string) =>
+  messages.findIndex((item) => item.id === id)
+
+export const findPartIndex = <T extends { id: string }>(parts: readonly T[], id: string) =>
+  parts.findIndex((item) => item.id === id)
+
+// Locate an item by identity without ever duplicating it: prefer the compound-order binary search
+// (fast path; also yields the correct insertion index when absent), then fall back to an ID scan
+// for the rare case where the stored copy carries a different time field than the incoming one.
+export function locateMessage<T extends MessageOrderItem>(
+  messages: readonly T[],
+  message: MessageOrderItem,
+): { found: boolean; index: number } {
+  const result = searchMessages(messages, message)
+  if (result.found) return result
+  const index = findMessageIndex(messages, message.id)
+  if (index !== -1) return { found: true, index }
+  return result
+}
+
+export function locatePart<T extends PartOrderItem>(parts: readonly T[], part: PartOrderItem): {
+  found: boolean
+  index: number
+} {
+  const result = searchParts(parts, part)
+  if (result.found) return result
+  const index = findPartIndex(parts, part.id)
+  if (index !== -1) return { found: true, index }
+  return result
+}
diff --git a/packages/app/src/utils/session-stats.test.ts b/packages/app/src/utils/session-stats.test.ts
new file mode 100644
index 00000000..d238d22f
--- /dev/null
+++ b/packages/app/src/utils/session-stats.test.ts
@@ -0,0 +1,181 @@
+import { describe, expect, test } from "bun:test"
+import {
+  aggregateSessionStats,
+  formatCost,
+  formatTokenCount,
+  sortModelUsage,
+  type StatsSession,
+} from "./session-stats"
+
+const MS_IN_DAY = 24 * 60 * 60 * 1000
+
+function session(overrides: Partial<StatsSession> & { id: string }): StatsSession {
+  return {
+    time: { created: 0, updated: 0 },
+    ...overrides,
+  }
+}
+
+describe("aggregateSessionStats", () => {
+  test("empty input yields zeroed stats without NaN", () => {
+    const stats = aggregateSessionStats([])
+    expect(stats.totalSessions).toBe(0)
+    expect(stats.totalCost).toBe(0)
+    expect(stats.totalTokens.input).toBe(0)
+    expect(stats.tokensPerSession).toBe(0)
+    expect(stats.medianTokensPerSession).toBe(0)
+    expect(stats.costPerDay).toBe(0)
+    expect(Object.keys(stats.modelUsage)).toHaveLength(0)
+  })
+
+  test("sums cost and tokens across sessions", () => {
+    const stats = aggregateSessionStats([
+      session({
+        id: "a",
+        cost: 1.5,
+        tokens: { input: 100, output: 50, reasoning: 10, cache: { read: 5, write: 2 } },
+      }),
+      session({
+        id: "b",
+        cost: 0.25,
+        tokens: { input: 200, output: 30, reasoning: 0, cache: { read: 15, write: 8 } },
+      }),
+    ])
+    expect(stats.totalSessions).toBe(2)
+    expect(stats.totalCost).toBeCloseTo(1.75)
+    expect(stats.totalTokens.input).toBe(300)
+    expect(stats.totalTokens.output).toBe(80)
+    expect(stats.totalTokens.reasoning).toBe(10)
+    expect(stats.totalTokens.cache.read).toBe(20)
+    expect(stats.totalTokens.cache.write).toBe(10)
+  })
+
+  test("groups model usage by provider/model key", () => {
+    const stats = aggregateSessionStats([
+      session({
+        id: "a",
+        cost: 1,
+        tokens: { input: 10, output: 5, reasoning: 1, cache: { read: 2, write: 3 } },
+        model: { providerID: "anthropic", id: "claude" },
+      }),
+      session({
+        id: "b",
+        cost: 2,
+        tokens: { input: 20, output: 10, reasoning: 0, cache: { read: 0, write: 0 } },
+        model: { providerID: "anthropic", id: "claude" },
+      }),
+      session({
+        id: "c",
+        cost: 4,
+        tokens: { input: 1, output: 1, reasoning: 0, cache: { read: 0, write: 0 } },
+        model: { providerID: "openai", id: "gpt" },
+      }),
+    ])
+    const claude = stats.modelUsage["anthropic/claude"]
+    const gpt = stats.modelUsage["openai/gpt"]
+    expect(claude).toBeDefined()
+    expect(claude.sessions).toBe(2)
+    expect(claude.cost).toBeCloseTo(3)
+    expect(claude.tokens.input).toBe(30)
+    expect(claude.tokens.output).toBe(15)
+    expect(claude.tokens.reasoning).toBe(1)
+    expect(claude.tokens.cache.read).toBe(2)
+    expect(claude.tokens.cache.write).toBe(3)
+    expect(gpt).toBeDefined()
+    expect(gpt.sessions).toBe(1)
+    expect(gpt.cost).toBeCloseTo(4)
+  })
+
+  test("sessions without rollups contribute zero and stay out of model usage", () => {
+    const stats = aggregateSessionStats([
+      session({ id: "a" }),
+      session({ id: "b", cost: Number.NaN, tokens: undefined }),
+      session({
+        id: "c",
+        cost: 1,
+        tokens: { input: 4, output: 6, reasoning: 0, cache: { read: 0, write: 0 } },
+        model: { providerID: "p", id: "m" },
+      }),
+    ])
+    expect(stats.totalSessions).toBe(3)
+    expect(stats.totalCost).toBeCloseTo(1)
+    expect(stats.totalTokens.input).toBe(4)
+    expect(stats.totalTokens.output).toBe(6)
+    expect(Object.keys(stats.modelUsage)).toEqual(["p/m"])
+  })
+
+  test("computes per-session averages and median (even count)", () => {
+    const stats = aggregateSessionStats([
+      session({ id: "a", tokens: { input: 10, output: 0, reasoning: 0, cache: { read: 0, write: 0 } } }),
+      session({ id: "b", tokens: { input: 30, output: 0, reasoning: 0, cache: { read: 0, write: 0 } } }),
+      session({ id: "c", tokens: { input: 100, output: 0, reasoning: 0, cache: { read: 0, write: 0 } } }),
+      session({ id: "d", tokens: { input: 200, output: 0, reasoning: 0, cache: { read: 0, write: 0 } } }),
+    ])
+    expect(stats.tokensPerSession).toBeCloseTo((10 + 30 + 100 + 200) / 4)
+    expect(stats.medianTokensPerSession).toBeCloseTo((30 + 100) / 2)
+  })
+
+  test("computes date range, days and cost per day", () => {
+    const start = Date.UTC(2026, 0, 1)
+    const stats = aggregateSessionStats([
+      session({ id: "a", cost: 3, time: { created: start, updated: start + MS_IN_DAY } }),
+      session({ id: "b", cost: 5, time: { created: start + MS_IN_DAY, updated: start + 3 * MS_IN_DAY } }),
+    ])
+    expect(stats.dateRange.earliest).toBe(start)
+    expect(stats.dateRange.latest).toBe(start + 3 * MS_IN_DAY)
+    expect(stats.days).toBe(3)
+    expect(stats.costPerDay).toBeCloseTo(8 / 3)
+  })
+
+  test("single session collapses to one day", () => {
+    const at = Date.UTC(2026, 0, 1)
+    const stats = aggregateSessionStats([session({ id: "a", cost: 2, time: { created: at, updated: at } })])
+    expect(stats.days).toBe(1)
+    expect(stats.costPerDay).toBeCloseTo(2)
+  })
+})
+
+describe("formatTokenCount", () => {
+  test("keeps small numbers verbatim", () => {
+    expect(formatTokenCount(0)).toBe("0")
+    expect(formatTokenCount(999)).toBe("999")
+  })
+
+  test("compacts thousands and millions", () => {
+    expect(formatTokenCount(1_500)).toBe("1.5K")
+    expect(formatTokenCount(2_500_000)).toBe("2.5M")
+  })
+
+  test("tolerates non-finite input", () => {
+    expect(formatTokenCount(Number.NaN)).toBe("0")
+    expect(formatTokenCount(Number.POSITIVE_INFINITY)).toBe("0")
+  })
+})
+
+describe("formatCost", () => {
+  test("formats dollars with two decimals by default", () => {
+    expect(formatCost(1.2345)).toBe("$1.23")
+    expect(formatCost(0)).toBe("$0.00")
+  })
+
+  test("supports higher precision for model rows", () => {
+    expect(formatCost(0.1234, 4)).toBe("$0.1234")
+  })
+
+  test("tolerates non-finite input", () => {
+    expect(formatCost(Number.NaN)).toBe("$0.00")
+  })
+})
+
+describe("sortModelUsage", () => {
+  test("sorts by cost descending with session count tiebreak", () => {
+    const usage = aggregateSessionStats([
+      session({ id: "a", cost: 1, model: { providerID: "p", id: "cheap" } }),
+      session({ id: "b", cost: 9, model: { providerID: "p", id: "pricey" } }),
+      session({ id: "c", cost: 1, model: { providerID: "p", id: "busy" } }),
+      session({ id: "d", cost: 0, model: { providerID: "p", id: "busy" } }),
+    ]).modelUsage
+    const sorted = sortModelUsage(usage).map(([key]) => key)
+    expect(sorted).toEqual(["p/pricey", "p/busy", "p/cheap"])
+  })
+})
diff --git a/packages/app/src/utils/session-stats.ts b/packages/app/src/utils/session-stats.ts
new file mode 100644
index 00000000..db28121d
--- /dev/null
+++ b/packages/app/src/utils/session-stats.ts
@@ -0,0 +1,188 @@
+// PARITY-001: cross-session cost/token aggregation for the GUI.
+//
+// Mirrors the CLI `stats` command (packages/deepagent-code/src/cli/cmd/stats.ts) but aggregates
+// over the sessions already synced into the directory store (`store.session`) instead of reading
+// the database directly. The SDK `Session` type carries `cost`, `tokens` and `model` per session,
+// so no new API endpoint is needed. Per-message breakdowns (tool usage, per-message model usage)
+// are intentionally out of scope here — the store only carries session-level rollups.
+
+/** Structural slice of the SDK `Session` shape this aggregation consumes. */
+export interface StatsSession {
+  readonly id: string
+  readonly parentID?: string
+  readonly cost?: number
+  readonly tokens?: {
+    readonly input: number
+    readonly output: number
+    readonly reasoning: number
+    readonly cache: {
+      readonly read: number
+      readonly write: number
+    }
+  }
+  readonly model?: {
+    readonly id: string
+    readonly providerID: string
+  }
+  readonly time: {
+    readonly created: number
+    readonly updated: number
+  }
+}
+
+export interface StatsModelUsage {
+  readonly sessions: number
+  readonly cost: number
+  readonly tokens: {
+    readonly input: number
+    readonly output: number
+    readonly reasoning: number
+    readonly cache: {
+      readonly read: number
+      readonly write: number
+    }
+  }
+}
+
+export interface SessionStats {
+  readonly totalSessions: number
+  readonly totalCost: number
+  readonly totalTokens: {
+    readonly input: number
+    readonly output: number
+    readonly reasoning: number
+    readonly cache: {
+      readonly read: number
+      readonly write: number
+    }
+  }
+  /** Keyed by `${providerID}/${modelID}`, matching the CLI stats model keys. */
+  readonly modelUsage: Record<string, StatsModelUsage>
+  readonly dateRange: {
+    readonly earliest: number
+    readonly latest: number
+  }
+  readonly days: number
+  readonly costPerDay: number
+  readonly tokensPerSession: number
+  readonly medianTokensPerSession: number
+}
+
+const MS_IN_DAY = 24 * 60 * 60 * 1000
+
+const emptyTokens = () => ({ input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } })
+
+const totalOf = (tokens: SessionStats["totalTokens"]) =>
+  tokens.input + tokens.output + tokens.reasoning + tokens.cache.read + tokens.cache.write
+
+/**
+ * Aggregate per-session cost/token rollups into a cross-session overview.
+ *
+ * Pure and allocation-light so it can run inside a `createMemo` on every store update. Sessions
+ * missing `cost`/`tokens` (older rows, not yet rolled up) contribute zero.
+ */
+export function aggregateSessionStats(sessions: readonly StatsSession[]): SessionStats {
+  const totalTokens = emptyTokens()
+  const modelUsage: Record<string, StatsModelUsage> = {}
+  const sessionTotals: number[] = []
+  let totalCost = 0
+  let earliest = 0
+  let latest = 0
+
+  for (const session of sessions) {
+    const cost = typeof session.cost === "number" && Number.isFinite(session.cost) ? session.cost : 0
+    const tokens = session.tokens
+    totalCost += cost
+    if (tokens) {
+      totalTokens.input += tokens.input || 0
+      totalTokens.output += tokens.output || 0
+      totalTokens.reasoning += tokens.reasoning || 0
+      totalTokens.cache.read += tokens.cache?.read || 0
+      totalTokens.cache.write += tokens.cache?.write || 0
+    }
+    sessionTotals.push(totalOf({ ...emptyTokens(), ...tokens, cache: { ...emptyTokens().cache, ...tokens?.cache } }))
+
+    if (session.model) {
+      const key = `${session.model.providerID}/${session.model.id}`
+      const existing = modelUsage[key]
+      const merged: StatsModelUsage = existing
+        ? {
+            sessions: existing.sessions + 1,
+            cost: existing.cost + cost,
+            tokens: {
+              input: existing.tokens.input + (tokens?.input || 0),
+              output: existing.tokens.output + (tokens?.output || 0),
+              reasoning: existing.tokens.reasoning + (tokens?.reasoning || 0),
+              cache: {
+                read: existing.tokens.cache.read + (tokens?.cache?.read || 0),
+                write: existing.tokens.cache.write + (tokens?.cache?.write || 0),
+              },
+            },
+          }
+        : {
+            sessions: 1,
+            cost,
+            tokens: {
+              input: tokens?.input || 0,
+              output: tokens?.output || 0,
+              reasoning: tokens?.reasoning || 0,
+              cache: {
+                read: tokens?.cache?.read || 0,
+                write: tokens?.cache?.write || 0,
+              },
+            },
+          }
+      modelUsage[key] = merged
+    }
+
+    const created = session.time?.created ?? 0
+    const updated = session.time?.updated ?? created
+    if (earliest === 0 || (created > 0 && created < earliest)) earliest = created
+    if (updated > latest) latest = updated
+  }
+
+  const days = earliest > 0 && latest > earliest ? Math.max(1, Math.ceil((latest - earliest) / MS_IN_DAY)) : 1
+  const grandTotal = totalOf(totalTokens)
+  sessionTotals.sort((a, b) => a - b)
+  const mid = Math.floor(sessionTotals.length / 2)
+  const median =
+    sessionTotals.length === 0
+      ? 0
+      : sessionTotals.length % 2 === 0
+        ? (sessionTotals[mid - 1] + sessionTotals[mid]) / 2
+        : sessionTotals[mid]
+
+  return {
+    totalSessions: sessions.length,
+    totalCost,
+    totalTokens,
+    modelUsage,
+    dateRange: { earliest, latest },
+    days,
+    costPerDay: totalCost / days,
+    tokensPerSession: sessions.length > 0 ? grandTotal / sessions.length : 0,
+    medianTokensPerSession: median,
+  }
+}
+
+/** Compact token formatting shared with the CLI display (1.2K / 3.4M). */
+export function formatTokenCount(num: number): string {
+  if (!Number.isFinite(num)) return "0"
+  const value = Math.round(num)
+  if (value >= 1_000_000) return (value / 1_000_000).toFixed(1) + "M"
+  if (value >= 1_000) return (value / 1_000).toFixed(1) + "K"
+  return value.toString()
+}
+
+/** Dollar formatting for overview-level costs (two decimals). */
+export function formatCost(cost: number, decimals = 2): string {
+  const value = Number.isFinite(cost) ? cost : 0
+  return `$${value.toFixed(decimals)}`
+}
+
+/** Model usage rows sorted by cost descending (ties: session count descending). */
+export function sortModelUsage(modelUsage: Record<string, StatsModelUsage>): Array<[string, StatsModelUsage]> {
+  return Object.entries(modelUsage).sort(
+    ([, a], [, b]) => b.cost - a.cost || b.sessions - a.sessions,
+  )
+}
diff --git a/packages/cli/script/generate.ts b/packages/cli/script/generate.ts
index 9ad25383..b2977434 100755
--- a/packages/cli/script/generate.ts
+++ b/packages/cli/script/generate.ts
@@ -1,7 +1,23 @@
-const modelsUrl = process.env.DEEPAGENT_CODE_MODELS_URL || "https://models.dev"
+// Clean-build policy: ordered list of fresh remote endpoints; fail closed when all fail (never
+// fall back to a stale local snapshot). Default chain: models.dev then the Gitee mirror of
+// deepagent-ltd/models.dev (hourly-synced, reachable from CN networks).
+const modelsURLs = (
+  process.env.DEEPAGENT_CODE_MODELS_URL?.trim() ||
+  "https://models.dev,https://gitee.com/deepagent-ai/models.dev/raw/main"
+)
+  .split(",")
+  .map((url) => url.trim().replace(/\/$/, ""))
+  .filter((url) => url.length > 0)
 
-export const modelsData = process.env.MODELS_DEV_API_JSON
-  ? await Bun.file(process.env.MODELS_DEV_API_JSON).text()
-  : await fetch(`${modelsUrl}/api.json`).then((response) => response.text())
+async function load() {
+  if (process.env.MODELS_DEV_API_JSON) return Bun.file(process.env.MODELS_DEV_API_JSON).text()
+  for (const modelsUrl of modelsURLs) {
+    const response = await fetch(`${modelsUrl}/api.json`).catch(() => undefined)
+    if (response?.ok) return response.text()
+  }
+  throw new Error(`Unable to load models.dev catalog from ${modelsURLs.join(", ")}`)
+}
+
+export const modelsData = await load()
 
 console.log("Loaded models.dev snapshot")
diff --git a/packages/cli/src/services/daemon.ts b/packages/cli/src/services/daemon.ts
index 3cc3fa99..83294338 100644
--- a/packages/cli/src/services/daemon.ts
+++ b/packages/cli/src/services/daemon.ts
@@ -32,6 +32,12 @@ function sameRegistration(left: Registration, right: Registration) {
   return left.id === right.id && left.version === right.version && left.url === right.url && left.pid === right.pid
 }
 
+// PARITY-003 (Wave 0): the daemon's spawn target is switchable. DEEPAGENT_CODE_DAEMON_BACKEND=legacy
+// mounts the full legacy deepagent-code server instead of the v2 `serve`; the legacy entrypoint is
+// resolved from DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT. Read lazily so each call observes the
+// current environment.
+const backend = () => (process.env.DEEPAGENT_CODE_DAEMON_BACKEND === "legacy" ? "legacy" : "v2")
+
 export const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
@@ -63,8 +69,30 @@ export const layer = Layer.effect(
       return createOpencodeClient({ baseUrl: url, headers: ServerAuth.headers({ password: yield* password() }) })
     })
 
+    // The legacy server exposes GET /global/health -> { healthy, version, runtimeId } guarded by
+    // the same Basic-auth credential, instead of the v2 /api/health SDK route.
+    const legacyHealth = Effect.fnUntraced(function* (info: Registration) {
+      const credential = yield* password()
+      const body = yield* Effect.tryPromise({
+        try: async () => {
+          const response = await fetch(`${info.url}/global/health`, {
+            headers: ServerAuth.headers({ password: credential }),
+            signal: AbortSignal.timeout(2_000),
+          })
+          if (!response.ok) throw new Error(`Legacy health endpoint responded ${response.status}`)
+          return (await response.json()) as { healthy?: boolean; version?: string }
+        },
+        catch: (cause) => new Error("Legacy health check failed", { cause }),
+      })
+      if (body?.healthy !== true) return yield* Effect.fail(new Error("Registered server is not healthy"))
+      // The legacy endpoint reports its own version; prefer it so compatible() keeps the same
+      // handshake semantics as the v2 registration file.
+      return typeof body.version === "string" ? { ...info, version: body.version } : info
+    })
+
     const healthy = Effect.fnUntraced(function* () {
       const info = yield* registration()
+      if (backend() === "legacy") return yield* legacyHealth(info)
       const client = yield* createClient(info.url)
       const response = yield* Effect.tryPromise(() => client.v2.health.get({ signal: AbortSignal.timeout(2_000) }))
       if (response.data?.healthy === true) return info
@@ -114,18 +142,37 @@ export const layer = Layer.effect(
       if (found?.version === InstallationVersion && compiled) return found.url
       if (found) yield* stopProcess(found).pipe(Effect.ignore)
 
-      const entrypoint = compiled ? undefined : process.argv[1]
-      if (!compiled && entrypoint === undefined)
-        return yield* Effect.fail(new Error("Failed to resolve CLI entrypoint"))
-      yield* Effect.try({
-        try: () => {
-          spawn(process.execPath, [...(entrypoint ? [entrypoint] : []), "serve", "--register"], {
-            detached: true,
-            stdio: "ignore",
-          }).unref()
-        },
-        catch: (cause) => new Error("Failed to start server", { cause }),
-      })
+      if (backend() === "legacy") {
+        // Wave 0: spawn the legacy deepagent-code CLI `serve --register`. The password is passed
+        // through the environment the legacy server already honors (DEEPAGENT_CODE_SERVER_PASSWORD).
+        const legacyEntrypoint = process.env.DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT
+        if (!legacyEntrypoint)
+          return yield* Effect.fail(new Error("DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT is required for the legacy backend"))
+        const credential = yield* password()
+        yield* Effect.try({
+          try: () => {
+            spawn(process.execPath, [legacyEntrypoint, "serve", "--register"], {
+              detached: true,
+              stdio: "ignore",
+              env: { ...process.env, DEEPAGENT_CODE_SERVER_PASSWORD: credential },
+            }).unref()
+          },
+          catch: (cause) => new Error("Failed to start legacy server", { cause }),
+        })
+      } else {
+        const entrypoint = compiled ? undefined : process.argv[1]
+        if (!compiled && entrypoint === undefined)
+          return yield* Effect.fail(new Error("Failed to resolve CLI entrypoint"))
+        yield* Effect.try({
+          try: () => {
+            spawn(process.execPath, [...(entrypoint ? [entrypoint] : []), "serve", "--register"], {
+              detached: true,
+              stdio: "ignore",
+            }).unref()
+          },
+          catch: (cause) => new Error("Failed to start server", { cause }),
+        })
+      }
 
       return yield* compatible().pipe(
         Effect.retry(Schedule.spaced("50 millis").pipe(Schedule.both(Schedule.recurs(100)))),
diff --git a/packages/cli/test/daemon.test.ts b/packages/cli/test/daemon.test.ts
new file mode 100644
index 00000000..611855fd
--- /dev/null
+++ b/packages/cli/test/daemon.test.ts
@@ -0,0 +1,151 @@
+// PARITY-003 (Wave 0): daemon mounting the legacy deepagent-code server.
+//
+// Covers the legacy-specific daemon paths without touching the v2 behavior:
+//   * status() resolves a legacy registration through GET /global/health (Basic auth + version)
+//   * an unauthenticated/unknown legacy server is treated as unhealthy and deregistered
+//   * start() spawns the legacy entrypoint with the password in the environment, completes the
+//     version handshake, and stop() tears the process down and removes the registration
+import { afterAll, afterEach, beforeEach, describe, expect, it } from "bun:test"
+import { InstallationVersion } from "@deepagent-code/core/installation/version"
+import * as NodeServices from "@effect/platform-node/NodeServices"
+import { Effect } from "effect"
+import { mkdir, readFile, rm, writeFile, access } from "fs/promises"
+import { mkdtemp } from "fs/promises"
+import { tmpdir } from "os"
+import path from "path"
+import { Daemon } from "../src/services/daemon"
+
+const run = <A, E>(effect: Effect.Effect<A, E, Daemon.Service>) =>
+  Effect.runPromise(
+    effect.pipe(Effect.provide(Daemon.defaultLayer), Effect.provide(NodeServices.layer), Effect.scoped),
+  )
+
+const withDaemon = <A>(use: (daemon: Daemon.Interface) => Effect.Effect<A, unknown, never>) =>
+  run(Effect.flatMap(Daemon.Service, use))
+
+const exists = (file: string) => access(file).then(
+  () => true,
+  () => false,
+)
+
+const fixtureEntrypoint = path.join(__dirname, "fixtures", "legacy-entry.ts")
+
+let home: string
+const homes: string[] = []
+
+const stateFile = () => path.join(home, "state", "server.json")
+
+beforeEach(async () => {
+  home = await mkdtemp(path.join(tmpdir(), "dacode-daemon-test-"))
+  homes.push(home)
+  await mkdir(path.join(home, "state"), { recursive: true })
+  process.env.DEEPAGENT_CODE_TEST_HOME = home
+  process.env.DEEPAGENT_CODE_HOME = home
+  process.env.DEEPAGENT_CODE_DAEMON_BACKEND = "legacy"
+  delete process.env.DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT
+  delete process.env.DEEPAGENT_CODE_DAEMON_FIXTURE_VERSION
+})
+
+afterEach(() => {
+  delete process.env.DEEPAGENT_CODE_DAEMON_BACKEND
+  delete process.env.DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT
+  delete process.env.DEEPAGENT_CODE_DAEMON_FIXTURE_VERSION
+})
+
+afterAll(async () => {
+  delete process.env.DEEPAGENT_CODE_HOME
+  delete process.env.DEEPAGENT_CODE_TEST_HOME
+  await Promise.all(homes.map((dir) => rm(dir, { recursive: true, force: true })))
+})
+
+function fakeLegacyServer(version: string, expectedPassword?: () => string) {
+  let seenAuth: string | undefined
+  const server = Bun.serve({
+    port: 0,
+    hostname: "127.0.0.1",
+    fetch(request) {
+      const url = new URL(request.url)
+      if (url.pathname === "/global/health") {
+        seenAuth = request.headers.get("authorization") ?? undefined
+        const expected = `Basic ${Buffer.from(`deepagent-code:${expectedPassword?.() ?? ""}`).toString("base64")}`
+        if (seenAuth !== expected) return Response.json({ error: "unauthorized" }, { status: 401 })
+        return Response.json({ healthy: true, version, runtimeId: "fake" })
+      }
+      return Response.json({ error: "not found" }, { status: 404 })
+    },
+  })
+  return { server, url: `http://127.0.0.1:${server.port}`, seenAuth: () => seenAuth }
+}
+
+describe("daemon legacy backend (PARITY-003)", () => {
+  it("resolves a legacy registration through /global/health with Basic auth", async () => {
+    let password = ""
+    const fake = fakeLegacyServer(InstallationVersion, () => password)
+    try {
+      password = await withDaemon((daemon) => daemon.password())
+      await writeFile(
+        stateFile(),
+        JSON.stringify({ id: "fixed", version: InstallationVersion, url: fake.url, pid: process.pid }),
+      )
+      const url = await withDaemon((daemon) => daemon.status())
+      expect(url).toBe(fake.url)
+      expect(fake.seenAuth()).toBe(`Basic ${Buffer.from(`deepagent-code:${password}`).toString("base64")}`)
+    } finally {
+      fake.server.stop()
+    }
+  })
+
+  it("treats an unauthenticated legacy server as unhealthy and clears the registration", async () => {
+    // The fake demands a password the daemon does not know (none generated yet on its side;
+    // generate one that differs from the fake's expected credential).
+    const fake = fakeLegacyServer(InstallationVersion, () => "some-other-secret")
+    try {
+      await withDaemon((daemon) => daemon.password("daemon-secret"))
+      await writeFile(
+        stateFile(),
+        JSON.stringify({ id: "fixed", version: InstallationVersion, url: fake.url, pid: process.pid }),
+      )
+      const url = await withDaemon((daemon) => daemon.status())
+      expect(url).toBeUndefined()
+      expect(await exists(stateFile())).toBe(false)
+    } finally {
+      fake.server.stop()
+    }
+  })
+
+  it("start() spawns the legacy entrypoint, completes the handshake, and stop() tears it down", async () => {
+    process.env.DEEPAGENT_CODE_DAEMON_LEGACY_ENTRYPOINT = fixtureEntrypoint
+    process.env.DEEPAGENT_CODE_DAEMON_FIXTURE_VERSION = InstallationVersion
+
+    const url = await withDaemon((daemon) => daemon.start())
+    expect(url).toMatch(/^http:\/\/127\.0\.0\.1:\d+$/)
+
+    const registration = JSON.parse(await readFile(stateFile(), "utf8"))
+    expect(registration.version).toBe(InstallationVersion)
+    expect(registration.url).toBe(url)
+    expect(registration.pid).toBeGreaterThan(0)
+
+    // The spawned server received the daemon's password and authenticates health checks with it.
+    const password = await withDaemon((daemon) => daemon.password())
+    const health = await fetch(`${url}/global/health`, {
+      headers: { Authorization: `Basic ${Buffer.from(`deepagent-code:${password}`).toString("base64")}` },
+    })
+    expect(health.status).toBe(200)
+    expect(await health.json()).toMatchObject({ healthy: true, version: InstallationVersion })
+
+    await withDaemon((daemon) => daemon.stop())
+    expect(await exists(stateFile())).toBe(false)
+
+    // The spawned process stepped down on SIGTERM.
+    const pid = registration.pid as number
+    for (let i = 0; i < 100; i++) {
+      try {
+        process.kill(pid, 0)
+      } catch {
+        return
+      }
+      await new Promise((resolve) => setTimeout(resolve, 50))
+    }
+    throw new Error(`Legacy server process ${pid} is still running after stop()`)
+  }, 15_000)
+})
diff --git a/packages/cli/test/fixtures/legacy-entry.ts b/packages/cli/test/fixtures/legacy-entry.ts
new file mode 100644
index 00000000..fc67936f
--- /dev/null
+++ b/packages/cli/test/fixtures/legacy-entry.ts
@@ -0,0 +1,62 @@
+// PARITY-003 (Wave 0) fixture: a minimal stand-in for the legacy deepagent-code CLI entrypoint.
+//
+// Implements exactly the protocol surface the daemon relies on when mounting a legacy server:
+//   * `serve --register` listens on an ephemeral port and exposes GET /global/health guarded by
+//     Basic auth (the same DEEPAGENT_CODE_SERVER_PASSWORD credential the daemon injects).
+//   * Writes state/server.json ({ id, version, url, pid }) atomically under the isolated test
+//     home, mirroring registerWithDaemon in packages/deepagent-code/src/cli/cmd/serve.ts.
+//   * Steps down on SIGTERM: removes the registration it owns, then exits.
+//
+// Plain Node/Bun on purpose — importing the real legacy CLI would drag in the whole app runtime.
+import { randomUUID } from "node:crypto"
+import fsSync from "node:fs"
+import path from "node:path"
+
+const version = process.env.DEEPAGENT_CODE_DAEMON_FIXTURE_VERSION ?? "local"
+const stateDir = path.join(process.env.DEEPAGENT_CODE_HOME ?? process.cwd(), "state")
+const file = path.join(stateDir, "server.json")
+
+const read = (): { id?: string } | undefined => {
+  try {
+    return JSON.parse(fsSync.readFileSync(file, "utf8"))
+  } catch {
+    return undefined
+  }
+}
+const id = randomUUID()
+const owned = () => read()?.id === id
+const expectedAuth = `Basic ${Buffer.from(`deepagent-code:${process.env.DEEPAGENT_CODE_SERVER_PASSWORD ?? ""}`).toString("base64")}`
+
+const server = Bun.serve({
+  port: 0,
+  hostname: "127.0.0.1",
+  fetch(request) {
+    const url = new URL(request.url)
+    if (url.pathname === "/global/health") {
+      if (request.headers.get("authorization") !== expectedAuth) {
+        return Response.json({ error: "unauthorized" }, { status: 401 })
+      }
+      return Response.json({ healthy: true, version, runtimeId: "fixture" })
+    }
+    return Response.json({ error: "not found" }, { status: 404 })
+  },
+})
+
+fsSync.mkdirSync(stateDir, { recursive: true })
+const temp = `${file}.${id}.tmp`
+fsSync.writeFileSync(temp, JSON.stringify({ id, version, url: `http://127.0.0.1:${server.port}`, pid: process.pid }), {
+  mode: 0o600,
+})
+fsSync.renameSync(temp, file)
+
+process.on("SIGTERM", () => {
+  if (owned()) {
+    try {
+      fsSync.unlinkSync(file)
+    } catch {
+      // A concurrent takeover may have already replaced the file.
+    }
+  }
+  server.stop(true)
+  process.exit(0)
+})
diff --git a/packages/core/migration/20260816073717_session_facade_activity/migration.sql b/packages/core/migration/20260816073717_session_facade_activity/migration.sql
new file mode 100644
index 00000000..e26c4f2a
--- /dev/null
+++ b/packages/core/migration/20260816073717_session_facade_activity/migration.sql
@@ -0,0 +1,20 @@
+CREATE TABLE `session_facade_activity` (
+	`activity_id` text PRIMARY KEY,
+	`subkind` text NOT NULL,
+	`parent_session_id` text NOT NULL,
+	`owner_session_id` text,
+	`spawn_tool_call_id` text,
+	`objective_text` text,
+	`budget_json` text,
+	`state` text NOT NULL,
+	`reason_code` text,
+	`source` text,
+	`created_at` integer NOT NULL,
+	`settled_at` integer,
+	`mutation_epoch` integer NOT NULL,
+	CONSTRAINT `fk_session_facade_activity_parent_session_id_session_id_fk` FOREIGN KEY (`parent_session_id`) REFERENCES `session`(`id`) ON DELETE CASCADE,
+	CONSTRAINT `fk_session_facade_activity_owner_session_id_session_id_fk` FOREIGN KEY (`owner_session_id`) REFERENCES `session`(`id`) ON DELETE CASCADE
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `session_facade_activity_active_idx` ON `session_facade_activity` (`parent_session_id`,`subkind`) WHERE "session_facade_activity"."state" = 'active';--> statement-breakpoint
+CREATE INDEX `session_facade_activity_parent_idx` ON `session_facade_activity` (`parent_session_id`,`state`,`created_at`);
\ No newline at end of file
diff --git a/packages/core/migration/20260816073717_session_facade_activity/snapshot.json b/packages/core/migration/20260816073717_session_facade_activity/snapshot.json
new file mode 100644
index 00000000..8a38b8fb
--- /dev/null
+++ b/packages/core/migration/20260816073717_session_facade_activity/snapshot.json
@@ -0,0 +1,16233 @@
+{
+  "version": "7",
+  "dialect": "sqlite",
+  "id": "29b4297e-5c48-49d6-9ea2-61cdd1e56475",
+  "prevIds": [
+    "0a9c6817-9da1-42d9-9c11-86d9fd55fae8"
+  ],
+  "ddl": [
+    {
+      "name": "workspace",
+      "entityType": "tables"
+    },
+    {
+      "name": "data_migration",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_effect_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_evidence",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_objective",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_permission_decision",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_permission_effect_dispatch",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_permission_once_consumption",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_permission_owner_lease",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_permission_request",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_activity_progress_observation",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_facade_activity",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_admission_outbox",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_governance_action",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_governance_compensation",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_governance_plan",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_job",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_lifecycle_trigger_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "learning_reviewer_attempt",
+      "entityType": "tables"
+    },
+    {
+      "name": "released_knowledge_evaluation",
+      "entityType": "tables"
+    },
+    {
+      "name": "released_knowledge_snapshot_document",
+      "entityType": "tables"
+    },
+    {
+      "name": "released_knowledge_snapshot_head",
+      "entityType": "tables"
+    },
+    {
+      "name": "released_knowledge_snapshot",
+      "entityType": "tables"
+    },
+    {
+      "name": "file_part_artifact_binding",
+      "entityType": "tables"
+    },
+    {
+      "name": "file_part_artifact_chunk",
+      "entityType": "tables"
+    },
+    {
+      "name": "file_part_artifact_discard",
+      "entityType": "tables"
+    },
+    {
+      "name": "file_part_artifact_import",
+      "entityType": "tables"
+    },
+    {
+      "name": "file_part_artifact",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_v2_provider_parity_baseline",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_v2_provider_parity_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_v2_provider_turn_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_transfer_operation",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_transfer_target_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "account_state",
+      "entityType": "tables"
+    },
+    {
+      "name": "account",
+      "entityType": "tables"
+    },
+    {
+      "name": "control_account",
+      "entityType": "tables"
+    },
+    {
+      "name": "context_location_identity_alias",
+      "entityType": "tables"
+    },
+    {
+      "name": "context_location_identity",
+      "entityType": "tables"
+    },
+    {
+      "name": "location_index_coordination",
+      "entityType": "tables"
+    },
+    {
+      "name": "context_project_scope_identity_alias",
+      "entityType": "tables"
+    },
+    {
+      "name": "context_project_scope_identity",
+      "entityType": "tables"
+    },
+    {
+      "name": "context_security_namespace",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_artifact_chunk",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_artifact",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_compaction_receipt",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_dedupe",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_sequence",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_snapshot_attempt",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_snapshot_chunk",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_snapshot_row",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_snapshot",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_sync_backfill",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_sync_index",
+      "entityType": "tables"
+    },
+    {
+      "name": "event_sync_sequence",
+      "entityType": "tables"
+    },
+    {
+      "name": "event",
+      "entityType": "tables"
+    },
+    {
+      "name": "workspace_sync_cursor",
+      "entityType": "tables"
+    },
+    {
+      "name": "im_attachments",
+      "entityType": "tables"
+    },
+    {
+      "name": "im_groups",
+      "entityType": "tables"
+    },
+    {
+      "name": "im_members",
+      "entityType": "tables"
+    },
+    {
+      "name": "im_messages",
+      "entityType": "tables"
+    },
+    {
+      "name": "location_change_event",
+      "entityType": "tables"
+    },
+    {
+      "name": "location_projection_dirty_path",
+      "entityType": "tables"
+    },
+    {
+      "name": "location_projection_registration",
+      "entityType": "tables"
+    },
+    {
+      "name": "permission_saved_epoch",
+      "entityType": "tables"
+    },
+    {
+      "name": "permission",
+      "entityType": "tables"
+    },
+    {
+      "name": "project_directory",
+      "entityType": "tables"
+    },
+    {
+      "name": "project",
+      "entityType": "tables"
+    },
+    {
+      "name": "message",
+      "entityType": "tables"
+    },
+    {
+      "name": "part",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_context_epoch",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_fork_admission",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_fork_intent",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_history_state",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_input",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_intent",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_message",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_part_integrity_quarantine",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_prompt_epoch_message",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_prompt_epoch_recovery",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_steer",
+      "entityType": "tables"
+    },
+    {
+      "name": "session",
+      "entityType": "tables"
+    },
+    {
+      "name": "session_tool_request_resolution_command",
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+      "table": "learning_admission_outbox"
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+        "plan_id"
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+      "table": "learning_governance_compensation"
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+        "action_id"
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+      "table": "released_knowledge_evaluation"
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+      "table": "released_knowledge_evaluation"
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+        "snapshot_id"
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+      "table": "released_knowledge_snapshot_document"
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+      "table": "file_part_artifact_chunk"
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+      "table": "file_part_artifact_discard"
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+      "entityType": "fks",
+      "table": "file_part_artifact_import"
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+        "core_v2_receipt_id"
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+        "receipt_id"
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+      "table": "session_v2_provider_turn_receipt"
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+        "owner_token"
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+        "owner_token"
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+      "nameExplicit": false,
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+      "entityType": "fks",
+      "table": "session_v2_provider_turn_receipt"
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+      "table": "session_transfer_operation"
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+        "active_account_id"
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+      "name": "fk_account_state_active_account_id_account_id_fk",
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+        "security_namespace_id"
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+      "entityType": "fks",
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+      "name": "fk_context_location_identity_security_namespace_id_context_security_namespace_id_fk",
+      "entityType": "fks",
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+      "table": "event_snapshot_attempt"
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+      "entityType": "fks",
+      "table": "permission"
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+        "project_id"
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+      "nameExplicit": false,
+      "name": "fk_project_directory_project_id_project_id_fk",
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+      "table": "project_directory"
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+        "id"
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+      "onDelete": "CASCADE",
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+      "name": "fk_message_session_id_session_id_fk",
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+      "table": "message"
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+        "message_id"
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+        "id"
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+      "onDelete": "CASCADE",
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+      "table": "part"
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+        "session_id"
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+        "id"
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+      "onDelete": "CASCADE",
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+        "source_session_id"
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+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_fork_admission_source_session_id_session_id_fk",
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+      "table": "session_fork_admission"
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+        "source_session_id"
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+      "onDelete": "CASCADE",
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+      "name": "fk_session_fork_intent_source_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_fork_intent"
+    },
+    {
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+        "target_session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
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+      "onDelete": "CASCADE",
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+      "table": "session_fork_intent"
+    },
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+      "columns": [
+        "session_id"
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+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_history_state_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_history_state"
+    },
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+      "columns": [
+        "session_id"
+      ],
+      "tableTo": "session",
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+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_input_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_input"
+    },
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+      "columns": [
+        "session_id"
+      ],
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+      "columnsTo": [
+        "id"
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+      "onDelete": "CASCADE",
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+      "name": "fk_session_intent_session_id_session_id_fk",
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+      "table": "session_intent"
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+        "session_id"
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+        "id"
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+      "onDelete": "CASCADE",
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+      "name": "fk_session_message_session_id_session_id_fk",
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+      "table": "session_message"
+    },
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+      "columns": [
+        "session_id"
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+      "tableTo": "session",
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+        "id"
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+      "onDelete": "CASCADE",
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+      "name": "fk_session_prompt_epoch_message_session_id_session_id_fk",
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+      "table": "session_prompt_epoch_message"
+    },
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+      "columns": [
+        "message_id"
+      ],
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+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_prompt_epoch_message_message_id_message_id_fk",
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+      "table": "session_prompt_epoch_message"
+    },
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+        "session_id"
+      ],
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+        "id"
+      ],
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_steer_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_steer"
+    },
+    {
+      "columns": [
+        "project_id"
+      ],
+      "tableTo": "project",
+      "columnsTo": [
+        "id"
+      ],
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_project_id_project_id_fk",
+      "entityType": "fks",
+      "table": "session"
+    },
+    {
+      "columns": [
+        "session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_world_state_baseline_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_world_state_baseline"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "tableTo": "task_run",
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+        "run_id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_admission_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_admission"
+    },
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+      "columns": [
+        "parent_session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
+      ],
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_admission_parent_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "task_admission"
+    },
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+        "run_id"
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+        "run_id"
+      ],
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_notification_outbox_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_notification_outbox"
+    },
+    {
+      "columns": [
+        "parent_session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_notification_outbox_parent_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "task_notification_outbox"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "tableTo": "task_run",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_run_event_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_run_event"
+    },
+    {
+      "columns": [
+        "parent_session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
+      ],
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+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_run_parent_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "task_run"
+    },
+    {
+      "columns": [
+        "parent_run_id"
+      ],
+      "tableTo": "task_run",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_run_parent_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_run"
+    },
+    {
+      "columns": [
+        "continuation_of_run_id"
+      ],
+      "tableTo": "task_run",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_run_continuation_of_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_run"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "tableTo": "task_run",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_structured_finalizer_response_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_structured_finalizer_response"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "tableTo": "task_structured_output_evidence",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_structured_output_evidence_part_run_id_task_structured_output_evidence_run_id_fk",
+      "entityType": "fks",
+      "table": "task_structured_output_evidence_part"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "tableTo": "task_run",
+      "columnsTo": [
+        "run_id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_task_structured_output_evidence_run_id_task_run_run_id_fk",
+      "entityType": "fks",
+      "table": "task_structured_output_evidence"
+    },
+    {
+      "columns": [
+        "session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_todo_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "todo"
+    },
+    {
+      "columns": [
+        "session_id"
+      ],
+      "tableTo": "session",
+      "columnsTo": [
+        "id"
+      ],
+      "onUpdate": "NO ACTION",
+      "onDelete": "CASCADE",
+      "nameExplicit": false,
+      "name": "fk_session_share_session_id_session_id_fk",
+      "entityType": "fks",
+      "table": "session_share"
+    },
+    {
+      "columns": [
+        "activity_kind",
+        "activity_id",
+        "receipt_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_effect_receipt_pk",
+      "entityType": "pks",
+      "table": "session_activity_effect_receipt"
+    },
+    {
+      "columns": [
+        "activity_kind",
+        "activity_id",
+        "evidence_fingerprint"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_evidence_pk",
+      "entityType": "pks",
+      "table": "session_activity_evidence"
+    },
+    {
+      "columns": [
+        "activity_kind",
+        "activity_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_objective_pk",
+      "entityType": "pks",
+      "table": "session_activity_objective"
+    },
+    {
+      "columns": [
+        "activity_kind",
+        "activity_id",
+        "revision"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_progress_observation_pk",
+      "entityType": "pks",
+      "table": "session_activity_progress_observation"
+    },
+    {
+      "columns": [
+        "snapshot_id",
+        "source_store",
+        "doc_id"
+      ],
+      "nameExplicit": false,
+      "name": "released_knowledge_snapshot_document_pk",
+      "entityType": "pks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "columns": [
+        "security_namespace_id",
+        "project_scope_key"
+      ],
+      "nameExplicit": false,
+      "name": "released_knowledge_snapshot_head_pk",
+      "entityType": "pks",
+      "table": "released_knowledge_snapshot_head"
+    },
+    {
+      "columns": [
+        "artifact_id",
+        "chunk_index"
+      ],
+      "nameExplicit": false,
+      "name": "file_part_artifact_chunk_pk",
+      "entityType": "pks",
+      "table": "file_part_artifact_chunk"
+    },
+    {
+      "columns": [
+        "campaign_id",
+        "case_name"
+      ],
+      "nameExplicit": false,
+      "name": "session_v2_provider_parity_baseline_pk",
+      "entityType": "pks",
+      "table": "session_v2_provider_parity_baseline"
+    },
+    {
+      "columns": [
+        "campaign_id",
+        "case_name"
+      ],
+      "nameExplicit": false,
+      "name": "session_v2_provider_parity_receipt_pk",
+      "entityType": "pks",
+      "table": "session_v2_provider_parity_receipt"
+    },
+    {
+      "columns": [
+        "email",
+        "url"
+      ],
+      "nameExplicit": false,
+      "name": "control_account_pk",
+      "entityType": "pks",
+      "table": "control_account"
+    },
+    {
+      "columns": [
+        "security_namespace_id",
+        "old_canonical_root"
+      ],
+      "nameExplicit": false,
+      "name": "context_location_identity_alias_pk",
+      "entityType": "pks",
+      "table": "context_location_identity_alias"
+    },
+    {
+      "columns": [
+        "security_namespace_id",
+        "location_key"
+      ],
+      "nameExplicit": false,
+      "name": "context_location_identity_pk",
+      "entityType": "pks",
+      "table": "context_location_identity"
+    },
+    {
+      "columns": [
+        "index_space_id",
+        "projection_kind"
+      ],
+      "nameExplicit": false,
+      "name": "location_index_coordination_pk",
+      "entityType": "pks",
+      "table": "location_index_coordination"
+    },
+    {
+      "columns": [
+        "security_namespace_id",
+        "old_project_identity_hash"
+      ],
+      "nameExplicit": false,
+      "name": "context_project_scope_identity_alias_pk",
+      "entityType": "pks",
+      "table": "context_project_scope_identity_alias"
+    },
+    {
+      "columns": [
+        "security_namespace_id",
+        "project_scope_key"
+      ],
+      "nameExplicit": false,
+      "name": "context_project_scope_identity_pk",
+      "entityType": "pks",
+      "table": "context_project_scope_identity"
+    },
+    {
+      "columns": [
+        "artifact_id",
+        "chunk_index"
+      ],
+      "nameExplicit": false,
+      "name": "event_artifact_chunk_pk",
+      "entityType": "pks",
+      "table": "event_artifact_chunk"
+    },
+    {
+      "columns": [
+        "row_hash",
+        "chunk_index"
+      ],
+      "nameExplicit": false,
+      "name": "event_snapshot_chunk_pk",
+      "entityType": "pks",
+      "table": "event_snapshot_chunk"
+    },
+    {
+      "columns": [
+        "snapshot_id",
+        "row_index"
+      ],
+      "nameExplicit": false,
+      "name": "event_snapshot_row_pk",
+      "entityType": "pks",
+      "table": "event_snapshot_row"
+    },
+    {
+      "columns": [
+        "workspace_id",
+        "remote_fingerprint"
+      ],
+      "nameExplicit": false,
+      "name": "workspace_sync_cursor_pk",
+      "entityType": "pks",
+      "table": "workspace_sync_cursor"
+    },
+    {
+      "columns": [
+        "index_space_id",
+        "projection_kind",
+        "path"
+      ],
+      "nameExplicit": false,
+      "name": "location_projection_dirty_path_pk",
+      "entityType": "pks",
+      "table": "location_projection_dirty_path"
+    },
+    {
+      "columns": [
+        "index_space_id",
+        "projection_kind"
+      ],
+      "nameExplicit": false,
+      "name": "location_projection_registration_pk",
+      "entityType": "pks",
+      "table": "location_projection_registration"
+    },
+    {
+      "columns": [
+        "project_id",
+        "directory"
+      ],
+      "nameExplicit": false,
+      "name": "project_directory_pk",
+      "entityType": "pks",
+      "table": "project_directory"
+    },
+    {
+      "columns": [
+        "session_id",
+        "prompt_epoch",
+        "ordinal"
+      ],
+      "nameExplicit": false,
+      "name": "session_prompt_epoch_message_pk",
+      "entityType": "pks",
+      "table": "session_prompt_epoch_message"
+    },
+    {
+      "columns": [
+        "session_id",
+        "prompt_epoch"
+      ],
+      "nameExplicit": false,
+      "name": "session_prompt_epoch_recovery_pk",
+      "entityType": "pks",
+      "table": "session_prompt_epoch_recovery"
+    },
+    {
+      "columns": [
+        "session_id",
+        "prompt_epoch",
+        "section_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_world_state_baseline_pk",
+      "entityType": "pks",
+      "table": "session_world_state_baseline"
+    },
+    {
+      "columns": [
+        "run_id",
+        "attempt"
+      ],
+      "nameExplicit": false,
+      "name": "task_structured_finalizer_response_pk",
+      "entityType": "pks",
+      "table": "task_structured_finalizer_response"
+    },
+    {
+      "columns": [
+        "run_id",
+        "role",
+        "part_id"
+      ],
+      "nameExplicit": false,
+      "name": "task_structured_output_evidence_part_pk",
+      "entityType": "pks",
+      "table": "task_structured_output_evidence_part"
+    },
+    {
+      "columns": [
+        "session_id",
+        "position"
+      ],
+      "nameExplicit": false,
+      "name": "todo_pk",
+      "entityType": "pks",
+      "table": "todo"
+    },
+    {
+      "columns": [
+        "id"
+      ],
+      "nameExplicit": false,
+      "name": "workspace_pk",
+      "table": "workspace",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "name"
+      ],
+      "nameExplicit": false,
+      "name": "data_migration_pk",
+      "table": "data_migration",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "decision_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_permission_decision_pk",
+      "table": "session_activity_permission_decision",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "receipt_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_permission_effect_dispatch_pk",
+      "table": "session_activity_permission_effect_dispatch",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "request_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_permission_once_consumption_pk",
+      "table": "session_activity_permission_once_consumption",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "owner_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_permission_owner_lease_pk",
+      "table": "session_activity_permission_owner_lease",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "request_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_activity_permission_request_pk",
+      "table": "session_activity_permission_request",
+      "entityType": "pks"
+    },
+    {
+      "columns": [
+        "activity_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_facade_activity_pk",
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+      "table": "task_run"
+    },
+    {
+      "columns": [
+        {
+          "value": "state",
+          "isExpression": false
+        },
+        {
+          "value": "available_at",
+          "isExpression": false
+        },
+        {
+          "value": "priority",
+          "isExpression": false
+        },
+        {
+          "value": "time_created",
+          "isExpression": false
+        },
+        {
+          "value": "generation",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "task_run_queue_idx",
+      "entityType": "indexes",
+      "table": "task_run"
+    },
+    {
+      "columns": [
+        {
+          "value": "goal_id",
+          "isExpression": false
+        },
+        {
+          "value": "goal_tick_seq",
+          "isExpression": false
+        },
+        {
+          "value": "goal_role",
+          "isExpression": false
+        },
+        {
+          "value": "goal_ordinal",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "task_run_goal_idx",
+      "entityType": "indexes",
+      "table": "task_run"
+    },
+    {
+      "columns": [
+        {
+          "value": "response_message_id",
+          "isExpression": false
+        }
+      ],
+      "isUnique": true,
+      "where": null,
+      "origin": "manual",
+      "name": "task_structured_finalizer_response_message_idx",
+      "entityType": "indexes",
+      "table": "task_structured_finalizer_response"
+    },
+    {
+      "columns": [
+        {
+          "value": "run_id",
+          "isExpression": false
+        },
+        {
+          "value": "role",
+          "isExpression": false
+        },
+        {
+          "value": "ordinal",
+          "isExpression": false
+        }
+      ],
+      "isUnique": true,
+      "where": null,
+      "origin": "manual",
+      "name": "task_structured_output_evidence_part_ordinal_idx",
+      "entityType": "indexes",
+      "table": "task_structured_output_evidence_part"
+    },
+    {
+      "columns": [
+        {
+          "value": "part_id",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "task_structured_output_evidence_part_part_idx",
+      "entityType": "indexes",
+      "table": "task_structured_output_evidence_part"
+    },
+    {
+      "columns": [
+        {
+          "value": "raw_result_message_id",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "task_structured_output_evidence_raw_message_idx",
+      "entityType": "indexes",
+      "table": "task_structured_output_evidence"
+    },
+    {
+      "columns": [
+        {
+          "value": "result_message_id",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "task_structured_output_evidence_result_message_idx",
+      "entityType": "indexes",
+      "table": "task_structured_output_evidence"
+    },
+    {
+      "columns": [
+        {
+          "value": "session_id",
+          "isExpression": false
+        }
+      ],
+      "isUnique": false,
+      "where": null,
+      "origin": "manual",
+      "name": "todo_session_idx",
+      "entityType": "indexes",
+      "table": "todo"
+    },
+    {
+      "columns": [
+        "body_hash"
+      ],
+      "nameExplicit": false,
+      "name": "file_part_artifact_body_hash_unique",
+      "entityType": "uniques",
+      "table": "file_part_artifact"
+    },
+    {
+      "columns": [
+        "legacy_receipt_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_v2_provider_parity_baseline_legacy_receipt_id_unique",
+      "entityType": "uniques",
+      "table": "session_v2_provider_parity_baseline"
+    },
+    {
+      "columns": [
+        "event_id"
+      ],
+      "nameExplicit": false,
+      "name": "event_sync_index_event_id_unique",
+      "entityType": "uniques",
+      "table": "event_sync_index"
+    },
+    {
+      "columns": [
+        "target_session_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_fork_admission_target_session_id_unique",
+      "entityType": "uniques",
+      "table": "session_fork_admission"
+    },
+    {
+      "columns": [
+        "target_session_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_fork_intent_target_session_id_unique",
+      "entityType": "uniques",
+      "table": "session_fork_intent"
+    },
+    {
+      "columns": [
+        "resolution_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_prompt_epoch_recovery_resolution_id_unique",
+      "entityType": "uniques",
+      "table": "session_prompt_epoch_recovery"
+    },
+    {
+      "columns": [
+        "id"
+      ],
+      "nameExplicit": false,
+      "name": "session_steer_id_unique",
+      "entityType": "uniques",
+      "table": "session_steer"
+    },
+    {
+      "columns": [
+        "receipt_id"
+      ],
+      "nameExplicit": false,
+      "name": "session_tool_request_resolution_receipt_id_unique",
+      "entityType": "uniques",
+      "table": "session_tool_request_resolution"
+    },
+    {
+      "columns": [
+        "run_id"
+      ],
+      "nameExplicit": false,
+      "name": "task_notification_outbox_run_id_unique",
+      "entityType": "uniques",
+      "table": "task_notification_outbox"
+    },
+    {
+      "columns": [
+        "message_id"
+      ],
+      "nameExplicit": false,
+      "name": "task_notification_outbox_message_id_unique",
+      "entityType": "uniques",
+      "table": "task_notification_outbox"
+    },
+    {
+      "value": "\"trigger\" IN ('idle', 'pause', 'project_switch', 'session_finalization')",
+      "name": "learning_admission_outbox_trigger_check",
+      "entityType": "checks",
+      "table": "learning_admission_outbox"
+    },
+    {
+      "value": "json_valid(\"payload_json\") AND json_type(\"payload_json\") = 'object'",
+      "name": "learning_admission_outbox_payload_json_check",
+      "entityType": "checks",
+      "table": "learning_admission_outbox"
+    },
+    {
+      "value": "length(\"payload_fingerprint\") = 64 AND \"payload_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_admission_outbox_payload_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_admission_outbox"
+    },
+    {
+      "value": "\"state\" IN ('pending', 'admitted', 'rejected')",
+      "name": "learning_admission_outbox_state_check",
+      "entityType": "checks",
+      "table": "learning_admission_outbox"
+    },
+    {
+      "value": "(\"state\" = 'pending' AND \"job_id\" IS NULL AND \"candidate_input_ref\" IS NULL AND \"rejection_code\" IS NULL AND \"rejection_detail\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'admitted' AND \"job_id\" IS NOT NULL AND length(trim(\"candidate_input_ref\")) > 0 AND \"rejection_code\" IS NULL AND \"rejection_detail\" IS NULL AND \"settled_at\" IS NOT NULL) OR (\"state\" = 'rejected' AND \"job_id\" IS NULL AND length(trim(\"rejection_code\")) > 0 AND length(trim(\"rejection_detail\")) > 0 AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_admission_outbox_settlement_check",
+      "entityType": "checks",
+      "table": "learning_admission_outbox"
+    },
+    {
+      "value": "\"sequence\" >= 0",
+      "name": "learning_governance_action_sequence_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"version\" >= 0",
+      "name": "learning_governance_action_version_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "length(trim(\"candidate_id\")) > 0",
+      "name": "learning_governance_action_candidate_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "json_valid(\"payload_json\")",
+      "name": "learning_governance_action_payload_json_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"kind\" IN ('document_stage', 'memory_inbox')",
+      "name": "learning_governance_action_kind_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "length(\"payload_fingerprint\") = 64 AND \"payload_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_governance_action_payload_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"result_hash\" IS NULL OR (length(\"result_hash\") = 64 AND \"result_hash\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_action_result_hash_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"result_fingerprint\" IS NULL OR (length(\"result_fingerprint\") = 64 AND \"result_fingerprint\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_action_result_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"state\" IN ('prepared', 'running', 'settled', 'recovery_required')",
+      "name": "learning_governance_action_state_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "(\"state\" = 'prepared' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND \"result_ref\" IS NULL AND \"result_hash\" IS NULL AND \"result_fingerprint\" IS NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'running' AND length(trim(\"owner\")) > 0 AND \"lease_expires_at\" IS NOT NULL AND \"result_ref\" IS NULL AND \"result_hash\" IS NULL AND \"result_fingerprint\" IS NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'settled' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND length(trim(\"result_ref\")) > 0 AND \"result_hash\" IS NOT NULL AND \"result_fingerprint\" IS NOT NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NOT NULL) OR (\"state\" = 'recovery_required' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND length(trim(\"error_code\")) > 0 AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_governance_action_lifecycle_check",
+      "entityType": "checks",
+      "table": "learning_governance_action"
+    },
+    {
+      "value": "\"sequence\" >= 0",
+      "name": "learning_governance_compensation_sequence_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"version\" >= 0",
+      "name": "learning_governance_compensation_version_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"kind\" IN ('document_quarantine', 'memory_inbox_revoke')",
+      "name": "learning_governance_compensation_kind_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "length(\"source_payload_fingerprint\") = 64 AND \"source_payload_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_governance_compensation_source_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"result_hash\" IS NULL OR (length(\"result_hash\") = 64 AND \"result_hash\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_compensation_result_hash_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"result_fingerprint\" IS NULL OR (length(\"result_fingerprint\") = 64 AND \"result_fingerprint\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_compensation_result_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"state\" IN ('prepared', 'running', 'settled', 'recovery_required')",
+      "name": "learning_governance_compensation_state_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "(\"state\" = 'prepared' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND \"result_ref\" IS NULL AND \"result_hash\" IS NULL AND \"result_fingerprint\" IS NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'running' AND length(trim(\"owner\")) > 0 AND \"lease_expires_at\" IS NOT NULL AND \"result_ref\" IS NULL AND \"result_hash\" IS NULL AND \"result_fingerprint\" IS NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'settled' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND length(trim(\"result_ref\")) > 0 AND \"result_hash\" IS NOT NULL AND \"result_fingerprint\" IS NOT NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NOT NULL) OR (\"state\" = 'recovery_required' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND length(trim(\"error_code\")) > 0 AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_governance_compensation_lifecycle_check",
+      "entityType": "checks",
+      "table": "learning_governance_compensation"
+    },
+    {
+      "value": "\"policy\" = 'manual_review'",
+      "name": "learning_governance_plan_policy_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"action_count\" >= 0",
+      "name": "learning_governance_plan_action_count_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"version\" >= 0",
+      "name": "learning_governance_plan_version_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "json_valid(\"payload_json\")",
+      "name": "learning_governance_plan_payload_json_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "length(\"payload_fingerprint\") = 64 AND \"payload_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_governance_plan_payload_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"result_hash\" IS NULL OR (length(\"result_hash\") = 64 AND \"result_hash\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_plan_result_hash_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"result_fingerprint\" IS NULL OR (length(\"result_fingerprint\") = 64 AND \"result_fingerprint\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_governance_plan_result_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"state\" IN ('prepared', 'settled', 'recovery_required')",
+      "name": "learning_governance_plan_state_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "(\"state\" = 'prepared' AND \"result_ref\" IS NULL AND \"result_hash\" IS NULL AND \"result_fingerprint\" IS NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NULL) OR (\"state\" = 'settled' AND length(trim(\"result_ref\")) > 0 AND \"result_hash\" IS NOT NULL AND \"result_fingerprint\" IS NOT NULL AND \"error_code\" IS NULL AND \"settled_at\" IS NOT NULL) OR (\"state\" = 'recovery_required' AND length(trim(\"error_code\")) > 0 AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_governance_plan_settlement_check",
+      "entityType": "checks",
+      "table": "learning_governance_plan"
+    },
+    {
+      "value": "\"trigger\" IN ('idle', 'pause', 'project_switch', 'session_finalization')",
+      "name": "learning_job_trigger_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"policy\" IN ('auto_merge_safe_project', 'manual_review')",
+      "name": "learning_job_policy_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" IN ('queued', 'running', 'reviewing', 'governance', 'completed', 'failed', 'cancelled', 'recovery_required')",
+      "name": "learning_job_state_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"attempts\" >= 0",
+      "name": "learning_job_attempts_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"max_attempts\" > 0",
+      "name": "learning_job_max_attempts_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"version\" >= 0",
+      "name": "learning_job_version_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "length(\"admission_fingerprint\") = 64 AND \"admission_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_job_admission_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "(\"side_effect_state\" = 'not_started' AND \"side_effect_kind\" IS NULL) OR (\"side_effect_state\" IN ('started', 'settled', 'unknown') AND \"side_effect_kind\" IS NOT NULL)",
+      "name": "learning_job_side_effect_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "(\"side_effect_state\" = 'not_started' AND \"expected_result_ref\" IS NULL) OR (\"side_effect_kind\" IN ('extraction', 'reviewer') AND \"side_effect_state\" IN ('started', 'settled') AND length(trim(\"expected_result_ref\")) > 0) OR (\"side_effect_kind\" = 'governance' AND \"expected_result_ref\" IS NULL) OR (\"side_effect_state\" = 'unknown' AND \"expected_result_ref\" IS NULL)",
+      "name": "learning_job_expected_result_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"side_effect_state\" <> 'settled' OR (length(trim(\"result_ref\")) > 0 AND (\"expected_result_ref\" IS NULL OR \"side_effect_kind\" = 'reviewer' OR \"result_ref\" = \"expected_result_ref\"))",
+      "name": "learning_job_settled_result_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" NOT IN ('running', 'reviewing', 'governance') OR \"side_effect_state\" = 'not_started' OR (\"state\" = 'running' AND \"side_effect_kind\" = 'extraction') OR (\"state\" = 'reviewing' AND \"side_effect_kind\" = 'reviewer') OR (\"state\" = 'governance' AND \"side_effect_kind\" = 'governance')",
+      "name": "learning_job_active_phase_kind_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "(\"state\" = 'queued' AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND \"side_effect_state\" = 'not_started') OR (\"state\" IN ('running', 'reviewing', 'governance') AND \"started_at\" IS NOT NULL AND \"settled_at\" IS NULL AND ((length(trim(\"owner\")) > 0 AND \"lease_expires_at\" IS NOT NULL) OR (\"state\" IN ('reviewing', 'governance') AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND \"side_effect_state\" = 'not_started'))) OR (\"state\" IN ('completed', 'failed', 'cancelled', 'recovery_required') AND \"owner\" IS NULL AND \"lease_expires_at\" IS NULL AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_job_ownership_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" <> 'recovery_required' OR (\"side_effect_state\" <> 'not_started' AND \"error_code\" IS NOT NULL)",
+      "name": "learning_job_recovery_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" <> 'completed' OR (\"side_effect_state\" = 'settled' AND length(trim(\"result_ref\")) > 0)",
+      "name": "learning_job_completed_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" <> 'failed' OR length(trim(\"error_code\")) > 0",
+      "name": "learning_job_failed_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"state\" NOT IN ('completed', 'failed', 'cancelled') OR \"side_effect_state\" IN ('not_started', 'settled')",
+      "name": "learning_job_terminal_side_effect_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"settlement_fingerprint\" IS NULL OR (length(\"settlement_fingerprint\") = 64 AND \"settlement_fingerprint\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_job_settlement_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_job"
+    },
+    {
+      "value": "\"trigger\" IN ('idle', 'pause', 'project_switch')",
+      "name": "learning_lifecycle_trigger_kind_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "\"state\" IN ('prepared', 'admitted')",
+      "name": "learning_lifecycle_trigger_state_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "length(\"source_admission_hash\") = 64 AND \"source_admission_hash\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_lifecycle_trigger_source_admission_hash_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "length(\"source_terminal_hash\") = 64 AND \"source_terminal_hash\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_lifecycle_trigger_source_terminal_hash_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "length(\"artifact_hash\") = 64 AND \"artifact_hash\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_lifecycle_trigger_artifact_hash_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "length(\"admission_fingerprint\") = 64 AND \"admission_fingerprint\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_lifecycle_trigger_admission_fingerprint_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "json_valid(\"admission_json\") AND json_type(\"admission_json\") = 'object'",
+      "name": "learning_lifecycle_trigger_admission_json_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "json_valid(\"artifact_json\") AND json_type(\"artifact_json\") = 'object'",
+      "name": "learning_lifecycle_trigger_artifact_json_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "(\"state\" = 'prepared' AND \"settled_at\" IS NULL) OR (\"state\" = 'admitted' AND \"settled_at\" IS NOT NULL AND \"error_detail\" IS NULL)",
+      "name": "learning_lifecycle_trigger_settlement_check",
+      "entityType": "checks",
+      "table": "learning_lifecycle_trigger_receipt"
+    },
+    {
+      "value": "\"state\" IN ('prepared', 'dispatching', 'settled', 'failed', 'recovery_required')",
+      "name": "learning_reviewer_attempt_state_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "\"version\" >= 0",
+      "name": "learning_reviewer_attempt_version_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "length(\"request_hash\") = 64 AND \"request_hash\" NOT GLOB '*[^0-9a-f]*' AND length(\"source_candidate_set_hash\") = 64 AND \"source_candidate_set_hash\" NOT GLOB '*[^0-9a-f]*' AND length(\"policy_hash\") = 64 AND \"policy_hash\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "learning_reviewer_attempt_hash_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "(\"state\" IN ('prepared', 'dispatching') AND \"settled_at\" IS NULL) OR (\"state\" IN ('settled', 'failed', 'recovery_required') AND \"settled_at\" IS NOT NULL)",
+      "name": "learning_reviewer_attempt_terminal_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "(\"state\" <> 'settled' AND \"response_ref\" IS NULL AND \"response_hash\" IS NULL AND \"verdict\" IS NULL AND \"selected_candidate_ids_json\" IS NULL AND \"selected_subset_hash\" IS NULL) OR (\"state\" = 'settled' AND length(trim(\"response_ref\")) > 0 AND length(\"response_hash\") = 64 AND \"response_hash\" NOT GLOB '*[^0-9a-f]*' AND \"verdict\" IN ('approve', 'reject', 'manual_review') AND length(trim(\"selected_candidate_ids_json\")) > 0 AND length(\"selected_subset_hash\") = 64 AND \"selected_subset_hash\" NOT GLOB '*[^0-9a-f]*')",
+      "name": "learning_reviewer_attempt_response_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "\"state\" NOT IN ('failed', 'recovery_required') OR length(trim(\"error_code\")) > 0",
+      "name": "learning_reviewer_attempt_error_check",
+      "entityType": "checks",
+      "table": "learning_reviewer_attempt"
+    },
+    {
+      "value": "length(\"matrix_hash\") = 64 AND \"matrix_hash\" NOT GLOB '*[^0-9a-f]*'",
+      "name": "released_knowledge_evaluation_matrix_hash_check",
+      "entityType": "checks",
+      "table": "released_knowledge_evaluation"
+    },
+    {
+      "value": "json_valid(\"matrix_json\")",
+      "name": "released_knowledge_evaluation_matrix_json_check",
+      "entityType": "checks",
+      "table": "released_knowledge_evaluation"
+    },
+    {
+      "value": "json_valid(\"document_manifest_json\") AND json_type(\"document_manifest_json\") = 'array'",
+      "name": "released_knowledge_evaluation_document_manifest_json_check",
+      "entityType": "checks",
+      "table": "released_knowledge_evaluation"
+    },
+    {
+      "value": "\"repetitions\" > 0",
+      "name": "released_knowledge_evaluation_repetitions_check",
+      "entityType": "checks",
+      "table": "released_knowledge_evaluation"
+    },
+    {
+      "value": "\"evaluator_type\" IN ('human', 'agent', 'system')",
+      "name": "released_knowledge_evaluation_actor_type_check",
+      "entityType": "checks",
+      "table": "released_knowledge_evaluation"
+    },
+    {
+      "value": "\"ordinal\" >= 0",
+      "name": "released_knowledge_snapshot_document_ordinal_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "value": "\"source_store\" IN ('user_global', 'project')",
+      "name": "released_knowledge_snapshot_document_source_store_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "value": "\"doc_version\" > 0",
+      "name": "released_knowledge_snapshot_document_version_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "value": "length(\"doc_hash\") = 71 AND substr(\"doc_hash\", 1, 7) = 'sha256:' AND substr(\"doc_hash\", 8) NOT GLOB '*[^0-9a-f]*'",
+      "name": "released_knowledge_snapshot_document_hash_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "value": "\"doc_type\" IN ('knowledge', 'strategy', 'methodology', 'memory', 'skill')",
+      "name": "released_knowledge_snapshot_document_type_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_document"
+    },
+    {
+      "value": "(\"snapshot_id\" IS NULL AND \"generation\" = 0) OR (\"snapshot_id\" IS NOT NULL AND \"generation\" > 0)",
+      "name": "released_knowledge_snapshot_head_generation_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot_head"
+    },
+    {
+      "value": "\"release_kind\" IN ('legacy_baseline', 'evaluated', 'rollback')",
+      "name": "released_knowledge_snapshot_release_kind_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "\"document_count\" >= 0",
+      "name": "released_knowledge_snapshot_document_count_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "(\"verdict\" = 'passed' AND \"published_generation\" > 0) OR (\"verdict\" = 'failed' AND \"published_generation\" >= 0)",
+      "name": "released_knowledge_snapshot_published_generation_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "\"verdict\" IN ('passed', 'failed')",
+      "name": "released_knowledge_snapshot_verdict_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "(\"verdict\" = 'passed' AND \"failure_reason\" IS NULL) OR (\"verdict\" = 'failed' AND length(trim(\"failure_reason\")) > 0)",
+      "name": "released_knowledge_snapshot_failure_reason_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "(\"release_kind\" = 'legacy_baseline' AND \"parent_snapshot_id\" IS NULL AND \"verdict\" = 'passed') OR (\"release_kind\" <> 'legacy_baseline' AND \"parent_snapshot_id\" IS NOT NULL)",
+      "name": "released_knowledge_snapshot_release_chain_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "\"release_kind\" <> 'evaluated' OR \"verdict\" = 'failed' OR \"document_count\" > 0",
+      "name": "released_knowledge_snapshot_evaluated_membership_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    },
+    {
+      "value": "\"actor_type\" IN ('human', 'agent', 'system')",
+      "name": "released_knowledge_snapshot_actor_type_check",
+      "entityType": "checks",
+      "table": "released_knowledge_snapshot"
+    }
+  ],
+  "renames": []
+}
\ No newline at end of file
diff --git a/packages/core/package.json b/packages/core/package.json
index cffe3aa2..ea328b62 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
-  "version": "4.0.7-r2",
+  "version": "4.0.8",
   "name": "@deepagent-code/core",
   "type": "module",
   "license": "AGPL-3.0-or-later",
diff --git a/packages/core/script/release-gate-migration-check.ts b/packages/core/script/release-gate-migration-check.ts
new file mode 100644
index 00000000..7fe123c9
--- /dev/null
+++ b/packages/core/script/release-gate-migration-check.ts
@@ -0,0 +1,21 @@
+// Release-gate migration check: open a DB copy via layerFromPath (which applies pending
+// migrations) and report the latest applied migrations. Never touches the live DB.
+import { Effect } from "effect"
+import { Database } from "../src/database/database"
+
+const filename = process.argv[2]
+if (!filename) {
+  console.error("usage: bun script/release-gate-migration-check.ts <db-path>")
+  process.exit(1)
+}
+
+const program = Effect.gen(function* () {
+  const svc = yield* Database.Service
+  const rows = yield* svc.db.all<{ id: string }>("SELECT id FROM migration ORDER BY id DESC LIMIT 6")
+  console.log("APPLIED_OK")
+  for (const row of rows) console.log("  migration:", row.id)
+  const count = yield* svc.db.get<{ n: number }>("SELECT COUNT(*) AS n FROM migration")
+  console.log("total migrations:", count?.n)
+}).pipe(Effect.provide(Database.layerFromPath(filename)))
+
+await Effect.runPromise(program)
diff --git a/packages/core/src/agent-gateway.ts b/packages/core/src/agent-gateway.ts
index 6944769d..49e04155 100644
--- a/packages/core/src/agent-gateway.ts
+++ b/packages/core/src/agent-gateway.ts
@@ -17,6 +17,7 @@ import { knowledgeEnabled, strategyMethodologyEnabled, domainKnowledgeEnabled, m
 import type { AgentMode } from "./deepagent/mode"
 import { resolveDeepAgentCodeHome } from "./deepagent/workspace"
 import * as KnowledgeRetriever from "./deepagent/knowledge-retriever"
+import { buildProfile as buildRunProfile } from "./deepagent/profile-builder"
 import type { ProblemProfile } from "./deepagent/domain-pack"
 import { DeepAgentDurableLearning, type Admission } from "./deepagent/durable-learning"
 import { writeFileAtomic } from "./deepagent/atomic-write"
@@ -543,6 +544,7 @@ import * as DeepAgentKnowledgeSource from "./deepagent/knowledge-source"
 import * as DeepAgentKnowledgeSeed from "./deepagent/knowledge-seed"
 import * as DeepAgentDurableKnowledgeStore from "./deepagent/durable-knowledge-store"
 import * as DeepAgentDomainPackRegistry from "./deepagent/domain-pack-registry"
+import { readPinnedPacks } from "./deepagent/pinned-packs"
 import * as DeepAgentPromotion from "./deepagent/promotion"
 import * as DeepAgentDocumentStore from "./deepagent/document-store"
 import * as DeepAgentRunGraph from "./deepagent/run-graph"
@@ -917,6 +919,12 @@ const ensureSessionStateForRun = (run: RunRecord): DeepAgentSessionState.Session
     runId: run.runID,
     workspacePath: workspacePathForInput(run.input) ?? existing?.workspacePath ?? process.cwd(),
     userRequest: userRequestForInput(run.input) ?? existing?.userRequest ?? null,
+    // FEAT-007: lock the run's active pack snapshot id onto the session state at the run entry, so
+    // the session prompt loop can attribute each tool-request receipt's
+    // context_active_pack_set_snapshot_id to the exact pack set that shaped this run's knowledge
+    // retrieval. Single authority (FEAT-002): activePackSnapshot is memoized per run and derives from
+    // the SAME activation the retriever constrains on, so the receipt never re-derives it.
+    packSnapshotId: activePackSnapshot(run).id,
   })
 }
 
@@ -1769,6 +1777,9 @@ const modelWorkPackage = (run: RunRecord) => {
   const selectedStrategyRefs = refIdsOfKind("strategy")
   const selectedMemoryRefs = refIdsOfKind("memory")
   const selectedMethodologyRefs = refIdsOfKind("methodology")
+  // FEAT-002: compute the pack snapshot ONCE per work package (previously 2+ calls per record
+  // build); the WeakMap inside activePackSnapshot keeps every other call site on the same value.
+  const packSnapshot = activePackSnapshot(run)
   return {
     schema_version: "model_work_package.v1",
     work_package_id: run.workPackageID,
@@ -1953,9 +1964,10 @@ const modelWorkPackage = (run: RunRecord) => {
     required_skill_refs: [],
     selected_methodology_refs: selectedMethodologyRefs,
     // docs/34 §9 S4/DAP-7: record the active domain pack set + locked snapshot so the run is
-    // reproducible. activePackSnapshot is derived from the run's problem profile via the registry.
-    active_pack_set: activePackSnapshot(run).packs.map((p) => p.id),
-    pack_snapshot_id: activePackSnapshot(run).id,
+    // reproducible. FEAT-002: derived from the run's single authoritative profile (same one
+    // retrieval consumed), so active_pack_set and the retrieval constraints share one source.
+    active_pack_set: packSnapshot.packs.map((p) => p.id),
+    pack_snapshot_id: packSnapshot.id,
     knowledge_retrieval: {
       enabled: knowledgeEnabled(run.agentMode),
       mode: knowledgeEnabled(run.agentMode) ? "bounded_retrieval_refs_only" : "disabled",
@@ -2986,6 +2998,10 @@ function parseAgentMode(value: string | undefined): AgentMode {
 const retrieveKnowledge = (run: RunRecord) => {
   const task = extractTaskContext(run)
   const workspacePath = workspacePathForInput(run.input)
+  // FEAT-001: GUI-pinned packs must reach retrieval. Pins persist in the workspace memory dir
+  // (<baseDir>/memory/pinned-packs.json) written by the packsPin/packsUnpin handlers; the gateway
+  // reads the SAME dir so the control plane and the runtime agree.
+  const pinned = pinnedPackIds()
   return KnowledgeRetriever.retrieve({
     mode: run.agentMode,
     task,
@@ -2993,6 +3009,11 @@ const retrieveKnowledge = (run: RunRecord) => {
     round: 1,
     previousFailures: 0,
     profile: extractProblemProfile(run),
+    // FEAT-002: the authoritative run profile (built once per run). The retriever uses it for
+    // pack activation instead of re-deriving one from task text, so retrieval's selected packs
+    // and the run record's active_pack_set come from the same profile.
+    profileOverride: profileForRun(run),
+    ...(pinned.length > 0 ? { domainOptions: { overrides: pinned } } : {}),
     // docs/34 §8: scope durable retrieval to the run's workspace path (unions user-global +
     // this workspace's project-shared). Absent workspace => user-global only.
     ...(workspacePath ? { workspacePath } : {}),
@@ -3058,35 +3079,60 @@ const extractProblemProfile = (run: RunRecord): ProblemProfile => {
   }
 }
 
+// FEAT-001: the workspace memory dir the HTTP handlers (deepagent-code) write pinned-packs.json to
+// is <gateway baseDir>/memory (dirname(runsDir)/memory == Global.Path.agent.data/memory in
+// production). The gateway derives it from its own configured storage home — no workspacePath
+// needed, since the pin file is per-instance, mirroring the handler's workspaceMemoryDir().
+const pinnedMemoryDir = (): string => path.join(path.resolve(current.baseDir ?? resolveDeepAgentCodeHome()), "memory")
+
+const pinnedPackIds = (): string[] => readPinnedPacks(pinnedMemoryDir())
+
+// FEAT-002: the SINGLE authoritative ExtendedProblemProfile producer for a run. The gateway used
+// to keep two competing truths — profileFromInput (regex-derived inside the retriever) and a
+// hardcoded profile for the recorded snapshot — so active_pack_set could diverge from the packs
+// retrieval actually constrained on. Now the gateway builds one profile at run entry (workspace
+// facts via profile-builder, the same logic deepagent-code's profile-detector re-exports) and both
+// knowledge retrieval (RetrievalInput.profileOverride) and the pack snapshot consume it. Built
+// once per run record: inputs are immutable and pins are read once, so the WeakMap cache makes
+// every downstream call site observe the identical profile.
+const runProfileCache = new WeakMap<RunRecord, DeepAgentDomainPackRegistry.ExtendedProblemProfile>()
+const profileForRun = (run: RunRecord): DeepAgentDomainPackRegistry.ExtendedProblemProfile => {
+  const cached = runProfileCache.get(run)
+  if (cached) return cached
+  const profile = buildRunProfile({
+    cwd: workspacePathForInput(run.input) ?? process.cwd(),
+    agentMode: run.agentMode,
+    scenarioMode: "intelligence",
+    userRequest: userRequestForInput(run.input) ?? run.input.feature ?? "",
+    userOverrides: pinnedPackIds(),
+  })
+  runProfileCache.set(run, profile)
+  return profile
+}
+
 // docs/34 §9 DAP-7: lock the active domain pack snapshot for a run so each run records the exact
-// pack set that shaped its knowledge retrieval. Best-effort: if the registry has no configured
-// dir or discover returns nothing, the snapshot is empty (no packs) — retrieval still works.
+// pack set that shaped its knowledge retrieval. FEAT-002: no hardcoded profile fields — the
+// snapshot is locked from the SAME activation (activationForProfile over profileForRun) that the
+// retriever constrains on, and memoized per run so the record build calls it effectively once.
+// Best-effort: if the registry has no configured dir or discover returns nothing, the snapshot is
+// empty (no packs) — retrieval still works.
+const packSnapshotCache = new WeakMap<RunRecord, DeepAgentDomainPackRegistry.PackSnapshot>()
 const activePackSnapshot = (run: RunRecord): DeepAgentDomainPackRegistry.PackSnapshot => {
+  const cached = packSnapshotCache.get(run)
+  if (cached) return cached
+  let snapshot: DeepAgentDomainPackRegistry.PackSnapshot
   if (!DeepAgentDomainPackRegistry.isRegistryConfigured()) {
-    return { id: "pack_snapshot:empty", packs: [], created_at: new Date().toISOString() }
-  }
-  try {
-    const signals = run.input.feature ?? ""
-    const profile: DeepAgentDomainPackRegistry.ExtendedProblemProfile = {
-      scenario_mode: "intelligence",
-      agent_strength: run.agentMode as DeepAgentDomainPackRegistry.ExtendedProblemProfile["agent_strength"],
-      task_kind: "implement",
-      code_domains: ["code"],
-      business_domains: [],
-      platforms: [],
-      languages: ["typescript"],
-      frameworks: [],
-      data_classes: [],
-      risk_markers: [],
-      repo_signals: [signals],
-      round_signals: [],
-      user_overrides: [],
+    snapshot = { id: "pack_snapshot:empty", packs: [], created_at: new Date().toISOString() }
+  } else {
+    try {
+      const activation = KnowledgeRetriever.activationForProfile(profileForRun(run))
+      snapshot = DeepAgentDomainPackRegistry.lockSnapshot(activation.activePackIds)
+    } catch {
+      snapshot = { id: "pack_snapshot:error", packs: [], created_at: new Date().toISOString() }
     }
-    const { snapshot } = DeepAgentDomainPackRegistry.activateForProfile(profile)
-    return snapshot
-  } catch {
-    return { id: "pack_snapshot:error", packs: [], created_at: new Date().toISOString() }
   }
+  packSnapshotCache.set(run, snapshot)
+  return snapshot
 }
 
 const activationMode = (mode: AgentMode) =>
diff --git a/packages/core/src/context-federation/provider-owner.ts b/packages/core/src/context-federation/provider-owner.ts
index 5082485e..2a5a7046 100644
--- a/packages/core/src/context-federation/provider-owner.ts
+++ b/packages/core/src/context-federation/provider-owner.ts
@@ -21,6 +21,10 @@ export interface Interface {
   readonly register: (input: {
     readonly ownerToken: string
     readonly leaseMs: number
+    // Successor generation registration (BUG-407-009): the old token was fenced by lease expiry and
+    // this token continues the same ownership chain. Also installs the protocol-3 compatibility fence
+    // so a pre-successor binary refuses to open this database instead of re-quarantining the chain.
+    readonly successor?: boolean
     readonly now?: number
   }) => Effect.Effect<Lease, ConflictError>
   readonly heartbeat: (input: {
@@ -52,6 +56,7 @@ export const layer = Layer.effect(
     const register = Effect.fn("SessionProviderOwner.register")(function* (input: {
       readonly ownerToken: string
       readonly leaseMs: number
+      readonly successor?: boolean
       readonly now?: number
     }) {
       return yield* db
@@ -92,7 +97,7 @@ export function observedAtInTransaction(tx: Transaction): Effect.Effect<number>
 
 function registerInTransaction(
   tx: Transaction,
-  input: { readonly ownerToken: string; readonly leaseMs: number },
+  input: { readonly ownerToken: string; readonly leaseMs: number; readonly successor?: boolean },
 ) {
   return Effect.gen(function* () {
     if (!input.ownerToken.trim()) return yield* new ConflictError({ reason: "owner_token_required" })
@@ -110,6 +115,14 @@ function registerInTransaction(
       .returning()
       .get()
     if (!inserted) return yield* new ConflictError({ reason: "owner_token_already_registered" })
+    if (input.successor)
+      yield* tx.run(sql`
+        INSERT INTO database_capability(
+          capability, minimum_reader_protocol, minimum_writer_protocol, installed_at
+        ) VALUES (
+          'provider_owner_successor_v1', 3, 3, ${databaseNow}
+        ) ON CONFLICT(capability) DO NOTHING
+      `)
     return lease(inserted)
   })
 }
diff --git a/packages/core/src/context-federation/reconciliation-sql.ts b/packages/core/src/context-federation/reconciliation-sql.ts
new file mode 100644
index 00000000..0c7b941a
--- /dev/null
+++ b/packages/core/src/context-federation/reconciliation-sql.ts
@@ -0,0 +1,33 @@
+// FEAT-007: durable per-turn reconciliation records for federated context selections.
+// One row per federated provider turn receipt — compares the legacy selected refs (when
+// available at the receipt write site) against the projection selection ref set so the
+// "why did the model see these documents" question survives restarts (knowledgeMemoryDelta
+// is in-memory only).
+import { index, integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core"
+import { SessionTable } from "../session/sql"
+import { SessionActivityTable } from "./session-sql"
+import type { ContextReconciliation } from "./reconciliation"
+
+export const SessionContextReconciliationTable = sqliteTable(
+  "session_context_reconciliation",
+  {
+    reconciliation_id: text().primaryKey().notNull(),
+    session_id: text()
+      .notNull()
+      .references(() => SessionTable.id, { onDelete: "cascade" }),
+    activity_id: text()
+      .notNull()
+      .references(() => SessionActivityTable.activity_id, { onDelete: "cascade" }),
+    turn_receipt_id: text().notNull(),
+    selection_id: text(),
+    legacy_refs_fingerprint: text(),
+    projection_refs_fingerprint: text().notNull(),
+    outcome: text().$type<ContextReconciliation.Outcome>().notNull(),
+    diff_summary: text({ mode: "json" }).$type<ContextReconciliation.DiffSummary>().notNull(),
+    created_at: integer().notNull(),
+  },
+  (table) => [
+    uniqueIndex("session_context_reconciliation_receipt_idx").on(table.turn_receipt_id),
+    index("session_context_reconciliation_session_idx").on(table.session_id, table.created_at),
+  ],
+)
diff --git a/packages/core/src/context-federation/reconciliation.ts b/packages/core/src/context-federation/reconciliation.ts
new file mode 100644
index 00000000..60bb84f5
--- /dev/null
+++ b/packages/core/src/context-federation/reconciliation.ts
@@ -0,0 +1,158 @@
+export * as ContextReconciliation from "./reconciliation"
+
+import { Effect } from "effect"
+import { Database } from "../database/database"
+import { Hash } from "../util/hash"
+import type { GraphKind } from "./contract"
+import { SessionContextReconciliationTable } from "./reconciliation-sql"
+
+export type RefKeyParts = {
+  readonly graph: GraphKind
+  readonly entityId: string
+  readonly revision: string
+}
+
+export type Outcome =
+  | "legacy_unavailable_projection_consistent"
+  | "legacy_unavailable_projection_duplicate_refs"
+  | "legacy_match"
+  | "legacy_mismatch"
+
+export type DiffSummary = {
+  readonly mode: "projection_internal" | "legacy_vs_projection"
+  readonly refCount: number
+  readonly duplicateCount: number
+  readonly perGraph: Readonly<Record<string, number>>
+  readonly legacy?: {
+    readonly refCount: number
+    readonly onlyInLegacy: readonly string[]
+    readonly onlyInProjection: readonly string[]
+    readonly sharedCount: number
+  }
+  readonly note?: string
+}
+
+export type RecordInput = {
+  readonly sessionId: string
+  readonly activityId: string
+  readonly turnReceiptId: string
+  readonly selectionId?: string
+  readonly projectionRefs: readonly RefKeyParts[]
+  readonly legacyRefs?: readonly RefKeyParts[]
+  readonly now?: number
+}
+
+export function refKey(parts: RefKeyParts): string {
+  return `${parts.graph}:${parts.entityId}:${parts.revision}`
+}
+
+/** Sorted, de-duplicated ref keys — the canonical set representation for fingerprinting/diffing. */
+export function refKeys(refs: readonly RefKeyParts[]): readonly string[] {
+  return [...new Set(refs.map(refKey))].sort()
+}
+
+export function duplicateCount(refs: readonly RefKeyParts[]): number {
+  return refs.length - new Set(refs.map(refKey)).size
+}
+
+export function refsFingerprint(refs: readonly RefKeyParts[]): string {
+  return Hash.sha256(JSON.stringify(refKeys(refs)))
+}
+
+export function diffRefKeys(a: readonly string[], b: readonly string[]) {
+  const setA = new Set(a)
+  const setB = new Set(b)
+  return {
+    onlyInA: a.filter((key) => !setB.has(key)),
+    onlyInB: b.filter((key) => !setA.has(key)),
+    sharedCount: a.filter((key) => setB.has(key)).length,
+  }
+}
+
+function perGraph(refs: readonly RefKeyParts[]): Record<string, number> {
+  return refs.reduce<Record<string, number>>(
+    (counts, ref) => ({ ...counts, [ref.graph]: (counts[ref.graph] ?? 0) + 1 }),
+    {},
+  )
+}
+
+export function evaluate(input: {
+  readonly projectionRefs: readonly RefKeyParts[]
+  readonly legacyRefs?: readonly RefKeyParts[]
+}): {
+  readonly outcome: Outcome
+  readonly projectionFingerprint: string
+  readonly legacyFingerprint?: string
+  readonly diffSummary: DiffSummary
+} {
+  const projectionFingerprint = refsFingerprint(input.projectionRefs)
+  const duplicates = duplicateCount(input.projectionRefs)
+  const base = {
+    refCount: input.projectionRefs.length,
+    duplicateCount: duplicates,
+    perGraph: perGraph(input.projectionRefs),
+  }
+  if (!input.legacyRefs) {
+    // Legacy selected refs are produced inside the provider prepare path only; the receipt
+    // write site has the projection selection exclusively. Record projection-internal
+    // consistency instead of a cross-path diff (FEAT-007 fallback).
+    return {
+      outcome: duplicates > 0 ? "legacy_unavailable_projection_duplicate_refs" : "legacy_unavailable_projection_consistent",
+      projectionFingerprint,
+      diffSummary: {
+        ...base,
+        mode: "projection_internal",
+        note: "legacy selected refs unavailable at receipt write site; projection-internal consistency recorded",
+      },
+    }
+  }
+  const legacyKeys = refKeys(input.legacyRefs)
+  const projectionKeys = refKeys(input.projectionRefs)
+  const diff = diffRefKeys(legacyKeys, projectionKeys)
+  return {
+    outcome: diff.onlyInA.length === 0 && diff.onlyInB.length === 0 ? "legacy_match" : "legacy_mismatch",
+    projectionFingerprint,
+    legacyFingerprint: Hash.sha256(JSON.stringify(legacyKeys)),
+    diffSummary: {
+      ...base,
+      mode: "legacy_vs_projection",
+      legacy: {
+        refCount: input.legacyRefs.length,
+        onlyInLegacy: diff.onlyInA,
+        onlyInProjection: diff.onlyInB,
+        sharedCount: diff.sharedCount,
+      },
+    },
+  }
+}
+
+/** Deterministic per-receipt identity; safe for idempotent retries. */
+export function reconciliationId(turnReceiptId: string): string {
+  return Hash.sha256(`session-context-reconciliation:${turnReceiptId}`)
+}
+
+/**
+ * Durable per-turn reconciliation write. Idempotent on `turn_receipt_id`; callers are
+ * expected to wrap this best-effort so a failure never blocks the turn.
+ */
+export function record(db: Database.Interface["db"], input: RecordInput) {
+  return Effect.gen(function* () {
+    const evaluated = evaluate(input)
+    yield* db
+      .insert(SessionContextReconciliationTable)
+      .values({
+        reconciliation_id: reconciliationId(input.turnReceiptId),
+        session_id: input.sessionId,
+        activity_id: input.activityId,
+        turn_receipt_id: input.turnReceiptId,
+        selection_id: input.selectionId ?? null,
+        legacy_refs_fingerprint: evaluated.legacyFingerprint ?? null,
+        projection_refs_fingerprint: evaluated.projectionFingerprint,
+        outcome: evaluated.outcome,
+        diff_summary: evaluated.diffSummary,
+        created_at: input.now ?? Date.now(),
+      })
+      .onConflictDoNothing({ target: SessionContextReconciliationTable.turn_receipt_id })
+    return evaluated
+  })
+}
diff --git a/packages/core/src/context-federation/session-context.ts b/packages/core/src/context-federation/session-context.ts
index 652cbdc3..dda3b106 100644
--- a/packages/core/src/context-federation/session-context.ts
+++ b/packages/core/src/context-federation/session-context.ts
@@ -187,7 +187,7 @@ export interface Interface {
     readonly activityId: string
     readonly state: "settled" | "failed" | "interrupted"
     readonly now?: number
-  }) => Effect.Effect<Activity, Error>
+  }) => Effect.Effect<Activity | undefined, Error>
   readonly commitSelection: (input: CommitSelectionInput) => Effect.Effect<Selection, Error>
   readonly appendValidation: (input: ValidationInput) => Effect.Effect<string, Error>
   readonly hasValidValidation: (input: {
@@ -426,12 +426,16 @@ export const layer = Layer.effect(
       return yield* db
         .transaction((tx) =>
           Effect.gen(function* () {
+            // Idempotent settle (BUG-003): a missing row or one already in a terminal state is a
+            // no-op, not an error — multiple terminal paths (runLoop exit, resolve rollback,
+            // restart recovery) may legitimately race to settle the same activity. Real DB
+            // failures still surface through the error channel.
             const current = yield* tx
               .select()
               .from(SessionActivityTable)
               .where(eq(SessionActivityTable.activity_id, input.activityId))
               .get()
-            if (!current || current.state !== "active") return yield* new ActivityStateError()
+            if (!current || current.state !== "active") return undefined
             const settled = yield* tx
               .update(SessionActivityTable)
               .set({ state: input.state, settled_at: input.now ?? Date.now() })
@@ -440,7 +444,7 @@ export const layer = Layer.effect(
               )
               .returning()
               .get()
-            if (!settled) return yield* new ActivityStateError()
+            if (!settled) return undefined
             return activity(settled)
           }),
         )
diff --git a/packages/core/src/database/database.ts b/packages/core/src/database/database.ts
index edc3acb7..c41db1d4 100644
--- a/packages/core/src/database/database.ts
+++ b/packages/core/src/database/database.ts
@@ -14,6 +14,13 @@ import { containsDataPath } from "../global-path"
 const makeDatabase = EffectDrizzleSqlite.makeWithDefaults()
 type DatabaseShape = Effect.Success<typeof makeDatabase>
 
+// Compatibility protocol this runtime implements. Protocol 2 is the 1.4.5/1.4.6-era; protocol 3
+// marks databases that carry provider-owner successor generations (BUG-407-009 recovery fence): an
+// older binary that does not understand successor tokens must refuse to open such a database, or its
+// startup recovery would re-quarantine the successor state.
+export const SupportedReaderProtocol = 3
+export const SupportedWriterProtocol = 3
+
 export interface Interface {
   db: DatabaseShape
 }
@@ -43,10 +50,10 @@ export const layer = Layer.effect(
       minimum_writer_protocol: number
     }>("SELECT capability, minimum_reader_protocol, minimum_writer_protocol FROM database_capability")
     for (const capability of capabilities) {
-      if (capability.minimum_reader_protocol > 2 || capability.minimum_writer_protocol > 2)
+      if (capability.minimum_reader_protocol > SupportedReaderProtocol || capability.minimum_writer_protocol > SupportedWriterProtocol)
         return yield* Effect.die(
           new Error(
-            `Database capability ${capability.capability} requires reader protocol ${capability.minimum_reader_protocol} and writer protocol ${capability.minimum_writer_protocol}; this runtime supports protocol 2`,
+            `Database capability ${capability.capability} requires reader protocol ${capability.minimum_reader_protocol} and writer protocol ${capability.minimum_writer_protocol}; this runtime supports protocol ${SupportedWriterProtocol}`,
           ),
         )
     }
diff --git a/packages/core/src/database/migration.gen.ts b/packages/core/src/database/migration.gen.ts
index 2029c194..4e3c0e3d 100644
--- a/packages/core/src/database/migration.gen.ts
+++ b/packages/core/src/database/migration.gen.ts
@@ -139,5 +139,15 @@ export const migrations = (
     import("./migration/20260813121129_v2_provider_parity_response_fingerprint"),
     import("./migration/20260813121200_v2_provider_parity_campaign_authority"),
     import("./migration/20260813150000_single_authority_snapshot_merge"),
+    import("./migration/20260815120000_event_delivery_claim_lease"),
+    import("./migration/20260815130000_event_multiprocess_extensions"),
+    import("./migration/20260816000000_handoff_admission_receipt"),
+    import("./migration/20260816073717_session_facade_activity"),
+    import("./migration/20260816080000_receipt_active_pack_set_attribution"),
+    import("./migration/20260816081000_session_context_reconciliation"),
+    import("./migration/20260819120000_session_intent_confirmation_state"),
+    import("./migration/20260820000000_remote_compact_persistence"),
+    import("./migration/20260820120000_session_turn_stage_evidence"),
+    import("./migration/20260820130000_compaction_continuation_fail_closed"),
   ])
 ).map((module) => module.default) satisfies DatabaseMigration.Migration[]
diff --git a/packages/core/src/database/migration.ts b/packages/core/src/database/migration.ts
index cf9028dc..b4a044d7 100644
--- a/packages/core/src/database/migration.ts
+++ b/packages/core/src/database/migration.ts
@@ -1,13 +1,33 @@
 export * as DatabaseMigration from "./migration"
 
 import { sql } from "drizzle-orm"
-import { Effect, Semaphore } from "effect"
+import { Cause, Data, Effect, Exit, Schedule, Semaphore } from "effect"
 import type { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
 import { migrations } from "./migration.gen"
 
 type Database = EffectDrizzleSqlite.EffectSQLiteDatabase
 type Transaction = Parameters<Parameters<Database["transaction"]>[0]>[0]
 const lock = Semaphore.makeUnsafe(1)
+
+// A migration DDL can fail transiently when another connection (a second desktop instance, a
+// lingering daemon, or an in-process worker) holds an active statement against the old schema:
+// SQLite returns SQLITE_LOCKED immediately and busy_timeout does not apply to schema locks.
+// The migration transaction rolls back cleanly, so retrying once the competing connection
+// releases is safe; without the retry a desktop startup dies on a transient race.
+class TransientLock extends Data.TaggedError("DatabaseMigration.TransientLock")<{ readonly detail: string }> {}
+
+const isLockError = (value: unknown): boolean => {
+  if (typeof value !== "object" || value === null) return false
+  const record = value as { code?: string; message?: string; cause?: unknown }
+  if (record.code === "SQLITE_LOCKED" || record.code === "SQLITE_BUSY") return true
+  if (typeof record.message === "string" && /(database is locked|database table is locked|database is busy)/i.test(record.message))
+    return true
+  return record.cause !== undefined ? isLockError(record.cause) : false
+}
+
+const isTransientLockCause = (cause: Cause.Cause<unknown>): boolean => cause.reasons.some(isLockError)
+
+const transientLockRetry = Schedule.spaced("2 seconds").pipe(Schedule.take(30))
 const historicalAliases = new Map([
   ["20260530232709_lovely_romulus", "20260511173437_session-metadata"],
   ["20260803000000_subagent_control_plane_l1", "20260803000001_subagent_control_plane_l1"],
@@ -21,6 +41,9 @@ const mergedHistoryInsertions = new Set([
   "20260813100000_event_snapshot_authority",
   "20260813110000_provider_recovery_authority_bridge",
   "20260813120000_legacy_provider_receipt_supersession",
+  "20260813120346_v2_provider_parity_campaign",
+  "20260813121129_v2_provider_parity_response_fingerprint",
+  "20260813121200_v2_provider_parity_campaign_authority",
   "20260813125000_event_sync_backfill_authority",
   "20260813130000_file_part_artifact",
   "20260813131000_event_snapshot_chunks",
@@ -32,6 +55,7 @@ const mergedHistoryInsertions = new Set([
   "20260813141000_bug_407_010_sidecar_lifecycle",
   "20260813142000_bug_407_010_sidecar_indexes",
   "20260813143000_bug_407_010_aggregate_indexes",
+  "20260813150000_single_authority_snapshot_merge",
 ])
 
 export type Migration = {
@@ -109,18 +133,39 @@ function applyMigrations(db: Database, input: Migration[], requireLinearHistory:
 
     for (const migration of input) {
       if (completed.has(migration.id)) continue
-      yield* db.transaction((tx) =>
-        Effect.gen(function* () {
-          if (!process.env.DEEPAGENT_CODE_SKIP_MIGRATIONS) {
-            if (reconcileMergedHistory && migration.id === "20260812120000_legacy_provider_recovery")
-              yield* reconcileLegacyProviderRecovery(tx)
-            else yield* migration.up(tx)
-          }
-          yield* tx.run(
-            sql`INSERT INTO ${sql.identifier("migration")} (id, time_completed) VALUES (${migration.id}, ${Date.now()})`,
-          )
-        }),
-      )
+      yield* db
+        .transaction((tx) =>
+          Effect.gen(function* () {
+            if (!process.env.DEEPAGENT_CODE_SKIP_MIGRATIONS) {
+              if (reconcileMergedHistory && migration.id === "20260812120000_legacy_provider_recovery")
+                yield* reconcileLegacyProviderRecovery(tx)
+              else yield* migration.up(tx)
+            }
+            yield* tx.run(
+              sql`INSERT INTO ${sql.identifier("migration")} (id, time_completed) VALUES (${migration.id}, ${Date.now()})`,
+            )
+          }),
+        )
+        .pipe(
+          Effect.exit,
+          Effect.flatMap((exit) => {
+            if (Exit.isSuccess(exit)) return Effect.succeed(undefined)
+            if (isTransientLockCause(exit.cause)) return Effect.fail(new TransientLock({ detail: migration.id }))
+            return Effect.failCause(exit.cause)
+          }),
+          Effect.retry({ while: (error) => error instanceof TransientLock, schedule: transientLockRetry }),
+          Effect.exit,
+          Effect.flatMap((exit) => {
+            if (Exit.isSuccess(exit)) return Effect.succeed(undefined)
+            if (exit.cause.reasons.some((reason) => reason instanceof TransientLock))
+              return Effect.die(
+                new Error(
+                  `database migration ${migration.id} was blocked by another connection for 60s; close other DeepAgent Code windows and restart`,
+                ),
+              )
+            return Effect.failCause(exit.cause)
+          }),
+        )
     }
   })
 }
diff --git a/packages/core/src/database/migration/20260815120000_event_delivery_claim_lease.ts b/packages/core/src/database/migration/20260815120000_event_delivery_claim_lease.ts
new file mode 100644
index 00000000..bcfe1694
--- /dev/null
+++ b/packages/core/src/database/migration/20260815120000_event_delivery_claim_lease.ts
@@ -0,0 +1,22 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// RISK-001: claim/lease columns for durable event retry delivery. `dueRetries()` was an unlocked
+// global scan — two processes (Desktop + CLI daemon, or an upgrade overlap) could pick up the same
+// pending row and execute its side effects twice. A claimant now atomically stamps a token + lease;
+// rows whose lease expired become eligible for re-claim. Nullable so pre-existing rows stay valid.
+export default {
+  id: "20260815120000_event_delivery_claim_lease",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`ALTER TABLE deepagent_event_delivery ADD COLUMN claim_token TEXT`)
+      yield* tx.run(`ALTER TABLE deepagent_event_delivery ADD COLUMN claimant_id TEXT`)
+      yield* tx.run(`ALTER TABLE deepagent_event_delivery ADD COLUMN claimed_at INTEGER`)
+      yield* tx.run(`ALTER TABLE deepagent_event_delivery ADD COLUMN lease_expires_at INTEGER`)
+      yield* tx.run(`
+        CREATE INDEX deepagent_event_delivery_claim_idx
+        ON deepagent_event_delivery (subscription_group, status, next_attempt_at)
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260815130000_event_multiprocess_extensions.ts b/packages/core/src/database/migration/20260815130000_event_multiprocess_extensions.ts
new file mode 100644
index 00000000..26d4108d
--- /dev/null
+++ b/packages/core/src/database/migration/20260815130000_event_multiprocess_extensions.ts
@@ -0,0 +1,41 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// RISK-006: multi-process extensions for the EventV2 bus.
+//
+//   1. `deepagent_consumer_group.workspace_id` — durable consumer groups had no tenant field, so a
+//      group registry could not express which workspace a group consumes for. Default '' keeps
+//      pre-existing (global/unscoped) registrations valid.
+//   2. `deepagent_event_delivery.priority` — denormalized event priority so `dueRetries`/`claimDue`
+//      can order high-priority work first WITHOUT joining the event table. Nullable: pre-existing
+//      rows read as NULL and are treated as "normal" by the ordering.
+//   3. `deepagent_rate_limit_bucket` — durable fixed-window buckets for the tryPublish rate gate.
+//      Previously the limiter was an in-process Map, so N cooperating processes each enforced their
+//      own 1000/min/workspace quota (×N total). The bucket now lives in the shared DB and is
+//      updated inside an immediate transaction, so all processes enforce ONE combined quota.
+export default {
+  id: "20260815130000_event_multiprocess_extensions",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`ALTER TABLE deepagent_consumer_group ADD COLUMN workspace_id TEXT NOT NULL DEFAULT ''`)
+      yield* tx.run(`ALTER TABLE deepagent_event_delivery ADD COLUMN priority TEXT`)
+      yield* tx.run(`
+        CREATE TABLE IF NOT EXISTS deepagent_rate_limit_bucket (
+          workspace_id TEXT NOT NULL,
+          window_start INTEGER NOT NULL,
+          count INTEGER NOT NULL,
+          PRIMARY KEY (workspace_id, window_start)
+        )
+      `)
+      yield* tx.run(`
+        CREATE INDEX IF NOT EXISTS deepagent_consumer_group_workspace_idx
+        ON deepagent_consumer_group (workspace_id)
+      `)
+      // sweepPublishLimiter prunes elapsed windows by window_start alone (cross-workspace).
+      yield* tx.run(`
+        CREATE INDEX IF NOT EXISTS deepagent_rate_limit_bucket_window_idx
+        ON deepagent_rate_limit_bucket (window_start)
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260816000000_handoff_admission_receipt.ts b/packages/core/src/database/migration/20260816000000_handoff_admission_receipt.ts
new file mode 100644
index 00000000..51472218
--- /dev/null
+++ b/packages/core/src/database/migration/20260816000000_handoff_admission_receipt.ts
@@ -0,0 +1,35 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// FEAT-008 — durable admission receipt for `agent.handoff.requested` (see handoff-admission-sql.ts
+// for the carrier decision: a NEW table, because deepagent_event_delivery models delivery lifecycle
+// only, task_admission is the subagent task_run receipt, and agent_execution never models the
+// consumer's processing/terminal admission). Forward-only: pure additive CREATE TABLE + indexes.
+export default {
+  id: "20260816000000_handoff_admission_receipt",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        CREATE TABLE IF NOT EXISTS \`deepagent_handoff_admission\` (
+          \`handoff_id\` text PRIMARY KEY NOT NULL,
+          \`event_id\` text NOT NULL,
+          \`workspace_id\` text NOT NULL,
+          \`state\` text NOT NULL,
+          \`claimant_id\` text NOT NULL,
+          \`reason\` text,
+          \`started_at\` integer NOT NULL,
+          \`updated_at\` integer NOT NULL,
+          \`settled_at\` integer
+        );
+      `)
+      yield* tx.run(`
+        CREATE INDEX IF NOT EXISTS \`deepagent_handoff_admission_workspace_state_idx\`
+        ON \`deepagent_handoff_admission\` (\`workspace_id\`, \`state\`);
+      `)
+      yield* tx.run(`
+        CREATE UNIQUE INDEX IF NOT EXISTS \`deepagent_handoff_admission_event_idx\`
+        ON \`deepagent_handoff_admission\` (\`event_id\`);
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260816073717_session_facade_activity.ts b/packages/core/src/database/migration/20260816073717_session_facade_activity.ts
new file mode 100644
index 00000000..9ac5cc91
--- /dev/null
+++ b/packages/core/src/database/migration/20260816073717_session_facade_activity.ts
@@ -0,0 +1,83 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// FEAT-011 T1 — facade activity authority schema. Forward-only and purely additive: creates
+// the new `session_facade_activity` base table and nothing else. The federation objective /
+// permission child tables keep their ('legacy', 'v2') CHECKs on purpose — they are the fence
+// that keeps the facade branch isolated from the objective/permission machinery (facade
+// settlement is raw-SQL CAS on the base table, mirroring the legacy branch).
+// The drizzle-generated CREATE TABLE/index statements below are augmented with CHECK clauses
+// and lifecycle triggers that drizzle cannot express.
+export default {
+  id: "20260816073717_session_facade_activity",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        CREATE TABLE \`session_facade_activity\` (
+          \`activity_id\` text PRIMARY KEY,
+          \`subkind\` text NOT NULL CHECK (\`subkind\` IN ('task', 'goal', 'panel')),
+          \`parent_session_id\` text NOT NULL,
+          \`owner_session_id\` text,
+          \`spawn_tool_call_id\` text,
+          \`objective_text\` text,
+          \`budget_json\` text,
+          \`state\` text NOT NULL CHECK (\`state\` IN ('active', 'settled', 'failed', 'interrupted', 'recovery_required')),
+          \`reason_code\` text,
+          \`source\` text,
+          \`created_at\` integer NOT NULL,
+          \`settled_at\` integer,
+          \`mutation_epoch\` integer NOT NULL CHECK (\`mutation_epoch\` >= 0),
+          CONSTRAINT \`fk_session_facade_activity_parent_session_id_session_id_fk\` FOREIGN KEY (\`parent_session_id\`) REFERENCES \`session\`(\`id\`) ON DELETE CASCADE,
+          CONSTRAINT \`fk_session_facade_activity_owner_session_id_session_id_fk\` FOREIGN KEY (\`owner_session_id\`) REFERENCES \`session\`(\`id\`) ON DELETE CASCADE,
+          CHECK (
+            (\`state\` = 'active' AND \`settled_at\` IS NULL AND \`reason_code\` IS NULL) OR
+            (\`state\` != 'active' AND \`settled_at\` IS NOT NULL AND \`reason_code\` IS NOT NULL)
+          )
+        );
+      `)
+      yield* tx.run(`CREATE UNIQUE INDEX \`session_facade_activity_active_idx\` ON \`session_facade_activity\` (\`parent_session_id\`,\`subkind\`) WHERE "session_facade_activity"."state" = 'active';`)
+      yield* tx.run(`CREATE INDEX \`session_facade_activity_parent_idx\` ON \`session_facade_activity\` (\`parent_session_id\`,\`state\`,\`created_at\`);`)
+
+      // BUG-004 shape: opening a new facade activity requires settling the previous active one
+      // of the same parent+subkind first — enforced by the partial unique index above plus the
+      // single-shot active→terminal transition rule below (mirrors session_legacy_activity).
+      yield* tx.run(`
+        CREATE TRIGGER session_facade_activity_legal_update
+        BEFORE UPDATE ON session_facade_activity
+        WHEN NEW.activity_id != OLD.activity_id
+          OR NEW.subkind != OLD.subkind
+          OR NEW.parent_session_id != OLD.parent_session_id
+          OR COALESCE(NEW.owner_session_id, '') != COALESCE(OLD.owner_session_id, '')
+          OR COALESCE(NEW.spawn_tool_call_id, '') != COALESCE(OLD.spawn_tool_call_id, '')
+          OR COALESCE(NEW.objective_text, '') != COALESCE(OLD.objective_text, '')
+          OR COALESCE(NEW.budget_json, '') != COALESCE(OLD.budget_json, '')
+          OR COALESCE(NEW.source, '') != COALESCE(OLD.source, '')
+          OR NEW.created_at != OLD.created_at
+          OR OLD.state != 'active'
+          OR NEW.state NOT IN ('settled', 'failed', 'interrupted', 'recovery_required')
+          OR NEW.settled_at IS NULL
+          OR NEW.reason_code IS NULL
+        BEGIN
+          SELECT RAISE(ABORT, 'illegal session_facade_activity transition');
+        END
+      `)
+      yield* tx.run(`
+        CREATE TRIGGER session_facade_activity_permission_effect_terminal_guard
+        BEFORE UPDATE OF state ON session_facade_activity
+        WHEN NEW.state IN ('settled', 'failed', 'interrupted', 'recovery_required') AND EXISTS (
+          SELECT 1
+          FROM session_activity_permission_effect_dispatch dispatch
+          WHERE dispatch.activity_kind = 'facade'
+            AND dispatch.activity_id = OLD.activity_id
+            AND (
+              dispatch.state = 'started' OR
+              (NEW.state IN ('settled', 'interrupted') AND dispatch.state = 'unknown')
+            )
+        )
+        BEGIN
+          SELECT RAISE(ABORT, 'activity has unresolved permission effects');
+        END
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260816080000_receipt_active_pack_set_attribution.ts b/packages/core/src/database/migration/20260816080000_receipt_active_pack_set_attribution.ts
new file mode 100644
index 00000000..70c81196
--- /dev/null
+++ b/packages/core/src/database/migration/20260816080000_receipt_active_pack_set_attribution.ts
@@ -0,0 +1,24 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// FEAT-007 — attribution column for the active_pack_set snapshot locked at the run entry.
+// The receipt table lives outside the core drizzle schema (typed in deepagent-code only), so
+// this stays a hand-authored forward-only ALTER, mirroring the released_knowledge_turn_binding
+// precedent. NULL is allowed: the federation resolve result does not expose the pack snapshot
+// id, so the receipt write site records NULL until it does (never blocks admission).
+export default {
+  id: "20260816080000_receipt_active_pack_set_attribution",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        ALTER TABLE session_tool_request_receipt ADD COLUMN context_active_pack_set_snapshot_id TEXT
+        CHECK (context_active_pack_set_snapshot_id IS NULL OR context_active_pack_set_snapshot_id LIKE 'pack_snapshot:%')
+      `)
+      yield* tx.run(`
+        CREATE INDEX session_tool_request_receipt_active_pack_set_idx
+        ON session_tool_request_receipt (context_active_pack_set_snapshot_id)
+        WHERE context_active_pack_set_snapshot_id IS NOT NULL
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260816081000_session_context_reconciliation.ts b/packages/core/src/database/migration/20260816081000_session_context_reconciliation.ts
new file mode 100644
index 00000000..31e630c4
--- /dev/null
+++ b/packages/core/src/database/migration/20260816081000_session_context_reconciliation.ts
@@ -0,0 +1,49 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// FEAT-007 — durable per-turn reconciliation of federated context selections. The in-memory
+// knowledgeMemoryDelta was the only legacy-vs-projection evidence and evaporated on restart;
+// this table persists one row per federated provider turn receipt. Forward-only: pure additive
+// CREATE TABLE + indexes (hand-authored, mirroring the handoff_admission_receipt precedent —
+// the table is typed in reconciliation-sql.ts but stays outside the drizzle-managed schema).
+export default {
+  id: "20260816081000_session_context_reconciliation",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        CREATE TABLE IF NOT EXISTS \`session_context_reconciliation\` (
+          \`reconciliation_id\` text PRIMARY KEY NOT NULL,
+          \`session_id\` text NOT NULL REFERENCES \`session\`(\`id\`) ON DELETE CASCADE,
+          \`activity_id\` text NOT NULL REFERENCES \`session_activity\`(\`activity_id\`) ON DELETE CASCADE,
+          \`turn_receipt_id\` text NOT NULL,
+          \`selection_id\` text,
+          \`legacy_refs_fingerprint\` text
+          CHECK (\`legacy_refs_fingerprint\` IS NULL OR (
+            length(\`legacy_refs_fingerprint\`) = 64 AND
+            \`legacy_refs_fingerprint\` NOT GLOB '*[^0-9a-f]*'
+          )),
+          \`projection_refs_fingerprint\` text NOT NULL
+          CHECK (
+            length(\`projection_refs_fingerprint\`) = 64 AND
+            \`projection_refs_fingerprint\` NOT GLOB '*[^0-9a-f]*'
+          ),
+          \`outcome\` text NOT NULL,
+          \`diff_summary\` text NOT NULL
+          CHECK (
+            json_valid(\`diff_summary\`) = 1 AND
+            json_type(\`diff_summary\`) = 'object'
+          ),
+          \`created_at\` integer NOT NULL
+        );
+      `)
+      yield* tx.run(`
+        CREATE UNIQUE INDEX IF NOT EXISTS \`session_context_reconciliation_receipt_idx\`
+        ON \`session_context_reconciliation\` (\`turn_receipt_id\`);
+      `)
+      yield* tx.run(`
+        CREATE INDEX IF NOT EXISTS \`session_context_reconciliation_session_idx\`
+        ON \`session_context_reconciliation\` (\`session_id\`, \`created_at\`);
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260819120000_session_intent_confirmation_state.ts b/packages/core/src/database/migration/20260819120000_session_intent_confirmation_state.ts
new file mode 100644
index 00000000..7dbca4cd
--- /dev/null
+++ b/packages/core/src/database/migration/20260819120000_session_intent_confirmation_state.ts
@@ -0,0 +1,253 @@
+/**
+ * BUG-405-003 residual P1: fold `awaiting_confirmation` and `selected` into the durable
+ * session_intent state contract (docs/bug-405-003.md §12.1).
+ *
+ * state = preparing | awaiting_confirmation | selected | admitting |
+ *         admitted | canceled | superseded | failed
+ *
+ * SQLite cannot alter a CHECK constraint in place, so session_intent must be rebuilt.
+ * session_activity_admission.legacy_intent_id references session_intent, and with
+ * PRAGMA foreign_keys enabled (runtime connection) dropping the parent table performs an
+ * implicit DELETE that fails on the referencing admission rows. The whole legacy activity
+ * chain (admission -> legacy_activity -> {admission membership, progress, run, terminal,
+ * migration receipt}) is therefore detached into temp backups first — the same strategy
+ * used by 20260812120000_legacy_provider_recovery — then rebuilt and restored verbatim.
+ *
+ * The detached tables are recreated from their captured sqlite_master definitions (not
+ * hardcoded final shapes) because merged-lineage histories can reach this migration before
+ * 20260812120000/20260812130000 are applied; later authorities must still find the exact
+ * shapes they expect to ALTER or rebuild. Triggers are recreated after the data restore so
+ * restore statements cannot fire validation or projection side effects (e.g. duplicate
+ * session_activity_objective rows).
+ */
+
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+const LEGACY_STATE_CHECK =
+  "CHECK (state IN ('preparing', 'admitting', 'admitted', 'canceled', 'superseded', 'failed'))"
+const WIDENED_STATE_CHECK =
+  "CHECK (state IN ('preparing', 'awaiting_confirmation', 'selected', 'admitting', 'admitted', 'canceled', 'superseded', 'failed'))"
+
+export default {
+  id: "20260819120000_session_intent_confirmation_state",
+  up(tx) {
+    return Effect.gen(function* () {
+      const has = (table: string) =>
+        Effect.gen(function* () {
+          return Boolean(
+            yield* tx.get(`SELECT name FROM sqlite_master WHERE type = 'table' AND name = '${table}'`),
+          )
+        })
+      const ddlOf = (type: string, name: string) =>
+        Effect.gen(function* () {
+          const row = yield* tx.get<{ sql: string }>(
+            `SELECT sql FROM sqlite_master WHERE type = '${type}' AND name = '${name}'`,
+          )
+          return row!.sql
+        })
+
+      const hasAdmission = yield* has("session_activity_admission")
+      const hasLegacyActivity = yield* has("session_legacy_activity")
+      const hasAdmissionJoin = yield* has("session_legacy_activity_admission")
+      const hasProgress = yield* has("session_activity_progress")
+      const hasRun = yield* has("session_legacy_activity_run")
+      const hasTerminal = yield* has("session_legacy_activity_terminal")
+      const hasMigrationReceipt = yield* has("session_legacy_activity_migration_receipt")
+
+      // Merged-lineage histories may not have applied the execution-identity expansion yet.
+      const intentColumns = yield* tx.all<{ name: string }>(`PRAGMA table_info(session_intent)`)
+      const hasExecutionColumns = intentColumns.some((column) => column.name === "execution_mode")
+      const intentDDL = yield* ddlOf("table", "session_intent")
+      const intentIndexes = yield* tx.all<{ sql: string }>(`
+        SELECT sql FROM sqlite_master
+        WHERE type = 'index' AND tbl_name = 'session_intent'
+          AND sql IS NOT NULL AND name NOT LIKE 'sqlite_%'
+      `)
+
+      // Captured current shapes of the detached chain (recreated verbatim later).
+      const chainTables: Array<{ name: string; sql: string }> = []
+      if (hasAdmission) chainTables.push({ name: "session_activity_admission", sql: yield* ddlOf("table", "session_activity_admission") })
+      if (hasLegacyActivity) chainTables.push({ name: "session_legacy_activity", sql: yield* ddlOf("table", "session_legacy_activity") })
+      if (hasAdmissionJoin) chainTables.push({ name: "session_legacy_activity_admission", sql: yield* ddlOf("table", "session_legacy_activity_admission") })
+      if (hasProgress) chainTables.push({ name: "session_activity_progress", sql: yield* ddlOf("table", "session_activity_progress") })
+      if (hasRun) chainTables.push({ name: "session_legacy_activity_run", sql: yield* ddlOf("table", "session_legacy_activity_run") })
+      if (hasTerminal) chainTables.push({ name: "session_legacy_activity_terminal", sql: yield* ddlOf("table", "session_legacy_activity_terminal") })
+      if (hasMigrationReceipt) chainTables.push({ name: "session_legacy_activity_migration_receipt", sql: yield* ddlOf("table", "session_legacy_activity_migration_receipt") })
+      const chainTableNames = chainTables.map((table) => `'${table.name}'`).join(", ")
+      const chainIndexes = chainTableNames.length
+        ? yield* tx.all<{ tbl_name: string; sql: string }>(`
+            SELECT tbl_name, sql FROM sqlite_master
+            WHERE type = 'index' AND tbl_name IN (${chainTableNames})
+              AND sql IS NOT NULL AND name NOT LIKE 'sqlite_%'
+          `)
+        : []
+      const chainTriggers = chainTableNames.length
+        ? yield* tx.all<{ sql: string }>(`
+            SELECT sql FROM sqlite_master
+            WHERE type = 'trigger' AND tbl_name IN (${chainTableNames}) AND sql IS NOT NULL
+          `)
+        : []
+
+      // ── Detach the FK children of session_intent into transaction-local backups ──
+      if (hasMigrationReceipt)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_migration_receipt AS
+          SELECT * FROM session_legacy_activity_migration_receipt
+        `)
+      if (hasTerminal)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_terminal AS
+          SELECT * FROM session_legacy_activity_terminal
+        `)
+      if (hasRun)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_run AS
+          SELECT * FROM session_legacy_activity_run
+        `)
+      if (hasAdmissionJoin)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_admission_join AS
+          SELECT * FROM session_legacy_activity_admission
+        `)
+      if (hasProgress)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_progress AS
+          SELECT * FROM session_activity_progress
+        `)
+      if (hasLegacyActivity)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_activity AS
+          SELECT * FROM session_legacy_activity
+        `)
+      if (hasAdmission)
+        yield* tx.run(`
+          CREATE TEMP TABLE intent_state_backup_admission AS
+          SELECT * FROM session_activity_admission
+        `)
+
+      // Children first so each drop only removes rows of the table itself.
+      if (hasMigrationReceipt) yield* tx.run(`DROP TABLE session_legacy_activity_migration_receipt`)
+      if (hasTerminal) yield* tx.run(`DROP TABLE session_legacy_activity_terminal`)
+      if (hasRun) yield* tx.run(`DROP TABLE session_legacy_activity_run`)
+      if (hasAdmissionJoin) yield* tx.run(`DROP TABLE session_legacy_activity_admission`)
+      if (hasProgress) yield* tx.run(`DROP TABLE session_activity_progress`)
+      if (hasLegacyActivity) yield* tx.run(`DROP TABLE session_legacy_activity`)
+      if (hasAdmission) yield* tx.run(`DROP TABLE session_activity_admission`)
+
+      // ── Rebuild session_intent with the BUG-405-003 §12.1 state contract ──
+      // Only the state CHECK changes; every other column definition is preserved verbatim so
+      // histories lacking the execution-identity columns can still receive them later.
+      const rebuiltDDL = intentDDL
+        .replace("CREATE TABLE session_intent", "CREATE TABLE session_intent_rebuilt")
+        .replace(LEGACY_STATE_CHECK, WIDENED_STATE_CHECK)
+      yield* tx.run(rebuiltDDL)
+      const columnNames = intentColumns.map((column) => column.name).join(", ")
+      yield* tx.run(`
+        INSERT INTO session_intent_rebuilt (${columnNames})
+        SELECT ${columnNames} FROM session_intent
+      `)
+      yield* tx.run(`DROP TABLE session_intent`)
+      // SQLite >= 3.25 rewrites referencing trigger/view bodies during RENAME when foreign_keys
+      // is ON; triggers on OTHER tables (e.g. session_tool_request_resolution_validate_insert)
+      // reference the still-dropped legacy chain at this point and make the rewrite fail
+      // ("no such table: main.session_activity_progress"). The rename target is the same name as
+      // the original table, so no reference rewrite is needed — use the legacy behavior for this
+      // single statement. The desktop runtime (node:sqlite, SQLite 3.51) hits this; bun:sqlite's
+      // older engine does not, which is why tests and bun-driven drills were green.
+      yield* tx.run(`PRAGMA legacy_alter_table = ON`)
+      yield* tx.run(`ALTER TABLE session_intent_rebuilt RENAME TO session_intent`)
+      yield* tx.run(`PRAGMA legacy_alter_table = OFF`)
+      for (const index of intentIndexes) yield* tx.run(index.sql)
+      if (hasExecutionColumns) {
+        yield* tx.run(`
+          CREATE TRIGGER session_intent_execution_validate_insert
+          BEFORE INSERT ON session_intent
+          WHEN NOT (
+            (NEW.execution_mode = 'legacy' AND NEW.execution_state = 'legacy'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'pending'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'claimed'
+              AND NEW.execution_claim_id IS NOT NULL AND NEW.execution_claimed_at IS NOT NULL) OR
+            (NEW.execution_mode = 'deferred' AND NEW.execution_state = 'absorbed'
+              AND NEW.execution_claim_id IS NOT NULL AND NEW.execution_claimed_at IS NOT NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'canceled'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL)
+          )
+          BEGIN
+            SELECT RAISE(ABORT, 'invalid session intent execution identity');
+          END
+        `)
+        yield* tx.run(`
+          CREATE TRIGGER session_intent_execution_validate_update
+          BEFORE UPDATE ON session_intent
+          WHEN NOT (
+            (NEW.execution_mode = 'legacy' AND NEW.execution_state = 'legacy'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'pending'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'claimed'
+              AND NEW.execution_claim_id IS NOT NULL AND NEW.execution_claimed_at IS NOT NULL) OR
+            (NEW.execution_mode = 'deferred' AND NEW.execution_state = 'absorbed'
+              AND NEW.execution_claim_id IS NOT NULL AND NEW.execution_claimed_at IS NOT NULL) OR
+            (NEW.execution_mode IN ('run_now','deferred') AND NEW.execution_state = 'canceled'
+              AND NEW.execution_claim_id IS NULL AND NEW.execution_claimed_at IS NULL)
+          ) OR NOT (
+            (NEW.execution_mode = OLD.execution_mode AND NEW.execution_state = OLD.execution_state
+              AND NEW.execution_claim_id IS OLD.execution_claim_id
+              AND NEW.execution_claimed_at IS OLD.execution_claimed_at) OR
+            (OLD.execution_state = 'pending' AND NEW.execution_mode = OLD.execution_mode
+              AND NEW.execution_state IN ('claimed','absorbed','canceled')) OR
+            (OLD.execution_mode = 'legacy' AND OLD.execution_state = 'legacy'
+              AND NEW.execution_mode IN ('run_now','deferred')
+              AND NEW.execution_state IN ('pending','claimed','absorbed','canceled'))
+          )
+          BEGIN
+            SELECT RAISE(ABORT, 'illegal session intent execution transition');
+          END
+        `)
+      }
+
+      // ── Recreate the detached chain with its captured definitions, then restore data ──
+      // Each table's indexes are recreated immediately after the table itself: child tables
+      // resolve FK parents through explicit unique indexes (e.g. terminal.operation_id), so
+      // those indexes must exist before the referencing child CREATE TABLE is prepared.
+      // Restores are positional (SELECT *) because the captured shapes may differ between
+      // merged-lineage and full histories (e.g. execution_mode may not exist yet).
+      for (const table of chainTables) {
+        yield* tx.run(table.sql)
+        for (const index of chainIndexes) if (index.tbl_name === table.name) yield* tx.run(index.sql)
+      }
+      if (hasAdmission)
+        yield* tx.run(`INSERT INTO session_activity_admission SELECT * FROM intent_state_backup_admission`)
+      if (hasLegacyActivity)
+        yield* tx.run(`INSERT INTO session_legacy_activity SELECT * FROM intent_state_backup_activity`)
+      if (hasAdmissionJoin)
+        yield* tx.run(`INSERT INTO session_legacy_activity_admission SELECT * FROM intent_state_backup_admission_join`)
+      if (hasProgress)
+        yield* tx.run(`INSERT INTO session_activity_progress SELECT * FROM intent_state_backup_progress`)
+      if (hasRun)
+        yield* tx.run(`INSERT INTO session_legacy_activity_run SELECT * FROM intent_state_backup_run`)
+      if (hasTerminal)
+        yield* tx.run(`INSERT INTO session_legacy_activity_terminal SELECT * FROM intent_state_backup_terminal`)
+      if (hasMigrationReceipt)
+        yield* tx.run(
+          `INSERT INTO session_legacy_activity_migration_receipt SELECT * FROM intent_state_backup_migration_receipt`,
+        )
+
+      // ── Recreate triggers only after the data restore so no validation or projection
+      //    side effects fire for rows that already existed before this migration ──
+      for (const trigger of chainTriggers) yield* tx.run(trigger.sql)
+
+      // ── Drop the transaction-local backups ──
+      if (hasMigrationReceipt) yield* tx.run(`DROP TABLE intent_state_backup_migration_receipt`)
+      if (hasTerminal) yield* tx.run(`DROP TABLE intent_state_backup_terminal`)
+      if (hasRun) yield* tx.run(`DROP TABLE intent_state_backup_run`)
+      if (hasAdmissionJoin) yield* tx.run(`DROP TABLE intent_state_backup_admission_join`)
+      if (hasProgress) yield* tx.run(`DROP TABLE intent_state_backup_progress`)
+      if (hasLegacyActivity) yield* tx.run(`DROP TABLE intent_state_backup_activity`)
+      if (hasAdmission) yield* tx.run(`DROP TABLE intent_state_backup_admission`)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260820000000_remote_compact_persistence.ts b/packages/core/src/database/migration/20260820000000_remote_compact_persistence.ts
new file mode 100644
index 00000000..3ce511f2
--- /dev/null
+++ b/packages/core/src/database/migration/20260820000000_remote_compact_persistence.ts
@@ -0,0 +1,86 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// UPD-005 (server-side compaction, Gap 1 + Gap 2) — persistence for the opaque
+// `encrypted_content` returned by `/responses/compact`, plus the mode columns on
+// compaction_run.
+//
+// Gap 1: `session_compaction_encrypted_content` holds the ONE currently-valid blob
+// per session (1:1, latest wins via ON CONFLICT(session_id) DO UPDATE at the write
+// site). The blob is cross-run / session-scoped — it is sent back on the NEXT
+// compaction so the provider can expand it — hence an independent table rather than
+// a compaction_run column. `provider_id` is recorded so the read path can verify
+// same-provenance before replaying a blob (a provider switch invalidates it).
+// Cleanup: session deletion cascades; the fail-over path clears explicitly.
+//
+// Gap 2: compaction_run gains `compaction_mode` ('local_summary' — the default and
+// the only value historical rows ever carry — | 'remote_compact') and
+// `encrypted_content_session` (remote mode only: pointer to the blob row). Remote
+// runs commit with `summary_text` NULL by design: losslessness is guaranteed by the
+// provider's encrypted context, not by text, and the information-hole check exempts
+// this mode.
+//
+// Forward-only: additive table + two ALTER ADD COLUMN statements; no existing data
+// is touched. Existing compaction_run rows read back as 'local_summary'.
+//
+// The authority trigger is rebuilt (same name, same state machine) so a
+// 'remote_compact' run may reach 'committed' without the TEXT-summary binding
+// columns: losslessness for remote runs is guaranteed by the provider's encrypted
+// context (see the information-hole exemption on the read path), not by
+// summary_text. local_summary runs keep the exact previous commit binding check.
+export default {
+  id: "20260820000000_remote_compact_persistence",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        CREATE TABLE session_compaction_encrypted_content (
+          session_id        TEXT NOT NULL PRIMARY KEY REFERENCES session(id) ON DELETE CASCADE,
+          encrypted_content TEXT NOT NULL,
+          provider_id       TEXT NOT NULL,
+          model_id          TEXT,
+          source_run_id     TEXT,
+          created_at        INTEGER NOT NULL,
+          updated_at        INTEGER NOT NULL
+        )
+      `)
+      yield* tx.run(`
+        ALTER TABLE compaction_run ADD COLUMN compaction_mode TEXT NOT NULL DEFAULT 'local_summary'
+        CHECK (compaction_mode IN ('local_summary', 'remote_compact'))
+      `)
+      yield* tx.run(`
+        ALTER TABLE compaction_run ADD COLUMN encrypted_content_session TEXT
+      `)
+      // Rebuild the update authority trigger: identical transitions
+      // (requested → summarizing → committed|failed|indeterminate), but the commit
+      // binding check no longer applies to remote_compact runs, which commit with
+      // summary_text NULL and the encrypted_content pointer instead.
+      yield* tx.run("DROP TRIGGER compaction_run_authority_validate_update")
+      yield* tx.run(`
+        CREATE TRIGGER compaction_run_authority_validate_update
+        BEFORE UPDATE ON compaction_run
+        BEGIN
+          SELECT CASE WHEN NOT (
+            NEW.state = OLD.state OR
+            (OLD.state = 'requested' AND NEW.state IN ('summarizing', 'failed', 'indeterminate')) OR
+            (OLD.state = 'summarizing' AND NEW.state IN ('committed', 'failed', 'indeterminate'))
+          ) THEN RAISE(ABORT, 'compaction_run_invalid_state_transition') END;
+          SELECT CASE WHEN NEW.state IN ('failed', 'indeterminate') AND NEW.terminal_failure_kind IS NULL
+            THEN RAISE(ABORT, 'compaction_run_terminal_failure_without_reason') END;
+          SELECT CASE WHEN OLD.state != 'committed' AND NEW.state = 'committed'
+            AND NEW.compaction_mode != 'remote_compact'
+            AND (
+            NEW.target_prompt_epoch IS NULL OR NEW.committed_summary_message_id IS NULL OR
+            NEW.checkpoint_hash IS NULL OR NEW.summary_text IS NULL OR NEW.recent_context IS NULL OR
+            NEW.completion_reason IS NULL OR NEW.committed_at IS NULL
+          ) THEN RAISE(ABORT, 'compaction_run_commit_binding_incomplete') END;
+          SELECT CASE WHEN OLD.state != 'committed' AND NEW.state = 'committed'
+            AND NEW.compaction_mode = 'remote_compact'
+            AND (
+            NEW.encrypted_content_session IS NULL OR
+            NEW.completion_reason IS NULL OR NEW.committed_at IS NULL
+          ) THEN RAISE(ABORT, 'compaction_run_commit_binding_incomplete') END;
+        END
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260820120000_session_turn_stage_evidence.ts b/packages/core/src/database/migration/20260820120000_session_turn_stage_evidence.ts
new file mode 100644
index 00000000..1bc9b5bd
--- /dev/null
+++ b/packages/core/src/database/migration/20260820120000_session_turn_stage_evidence.ts
@@ -0,0 +1,39 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// BUG-407-012 gap C: durable per-turn stage evidence.
+// One row per (session_id, activity_id), upserted forward-only as a provider turn
+// crosses each boundary (claim -> snapshot -> history -> request -> dispatch -> settle).
+// It exists so a turn stuck between "legacy activity claimed" and "provider receipt
+// created" can be attributed post-hoc; it is observability evidence, NOT an authority.
+export default {
+  id: "20260820120000_session_turn_stage_evidence",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`
+        CREATE TABLE session_turn_stage_evidence (
+          session_id  TEXT NOT NULL REFERENCES session(id) ON DELETE CASCADE,
+          activity_id TEXT NOT NULL,
+          stage       TEXT NOT NULL CHECK (stage IN (
+            'activity_claimed',
+            'snapshot_started',
+            'snapshot_finished',
+            'snapshot_degraded',
+            'history_loaded',
+            'request_prepared',
+            'provider_dispatch_started',
+            'terminal_settled'
+          )),
+          details     TEXT,       -- JSON stage attribution (e.g. degraded reason, budget numbers)
+          stage_at    INTEGER NOT NULL,
+          updated_at  INTEGER NOT NULL,
+          PRIMARY KEY (session_id, activity_id)
+        )
+      `)
+      yield* tx.run(
+        `CREATE INDEX session_turn_stage_evidence_session_idx
+           ON session_turn_stage_evidence(session_id, updated_at)`,
+      )
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/database/migration/20260820130000_compaction_continuation_fail_closed.ts b/packages/core/src/database/migration/20260820130000_compaction_continuation_fail_closed.ts
new file mode 100644
index 00000000..4b79bd60
--- /dev/null
+++ b/packages/core/src/database/migration/20260820130000_compaction_continuation_fail_closed.ts
@@ -0,0 +1,67 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration"
+
+// BUG-407-009 §10.1 fail-closed path for committed compaction continuations whose recovery
+// cannot proceed (e.g. the incident sessions have no assistant message for the v2 owner to
+// continue from). The original continuation state machine only allowed pending → admitted, and
+// the admission bindings (receipt id / admitted_at / response fingerprint) cannot exist for a
+// run that never reached admission — so recovery failures could not be recorded, and instance
+// initialization re-woke the same runs forever (log flood, endless retry loop).
+//
+// This migration widens the machine with one transition: pending → failed, exempt from the
+// admission/response binding requirements. Real continuation recovery remains a Maintenance
+// deliverable; this only makes the hotfix fail closed and stop re-advertising the run.
+
+export default {
+  id: "20260820130000_compaction_continuation_fail_closed",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`DROP TRIGGER compaction_run_continuation_transition`)
+      yield* tx.run(`
+        CREATE TRIGGER compaction_run_continuation_transition
+        BEFORE UPDATE OF continuation_state ON compaction_run
+        WHEN OLD.continuation_state IS NOT NEW.continuation_state AND NOT (
+          (OLD.continuation_state IS NULL AND NEW.continuation_state = 'pending') OR
+          (OLD.continuation_state = 'pending' AND NEW.continuation_state IN ('admitted', 'failed')) OR
+          (OLD.continuation_state = 'admitted' AND NEW.continuation_state IN ('pending', 'dispatching', 'failed')) OR
+          (OLD.continuation_state = 'dispatching' AND NEW.continuation_state IN ('settled', 'failed', 'indeterminate'))
+        )
+        BEGIN
+          SELECT RAISE(ABORT, 'illegal compaction continuation transition');
+        END
+      `)
+      yield* tx.run(`DROP TRIGGER compaction_run_continuation_binding_validate`)
+      yield* tx.run(`
+        CREATE TRIGGER compaction_run_continuation_binding_validate
+        BEFORE UPDATE ON compaction_run
+        WHEN NOT (OLD.continuation_state = 'pending' AND NEW.continuation_state = 'failed') AND (
+          (NEW.continuation_state IN ('admitted', 'dispatching', 'settled', 'failed', 'indeterminate') AND
+            (NEW.continuation_receipt_id IS NULL OR NEW.continuation_admitted_at IS NULL)) OR
+          (NEW.continuation_state IN ('dispatching', 'settled', 'failed', 'indeterminate') AND
+            NEW.continuation_dispatching_at IS NULL AND NEW.continuation_state != 'failed') OR
+          (NEW.continuation_state IN ('settled', 'failed', 'indeterminate') AND
+            NEW.continuation_terminal_at IS NULL)
+        )
+        BEGIN
+          SELECT RAISE(ABORT, 'incomplete compaction continuation binding');
+        END
+      `)
+      yield* tx.run(`DROP TRIGGER compaction_run_continuation_response_validate`)
+      yield* tx.run(`
+        CREATE TRIGGER compaction_run_continuation_response_validate
+        BEFORE UPDATE OF continuation_state ON compaction_run
+        WHEN NEW.continuation_state IN ('settled', 'failed')
+          AND NOT (OLD.continuation_state = 'pending' AND NEW.continuation_state = 'failed')
+          AND NOT EXISTS (
+            SELECT 1
+            FROM session_tool_request_receipt receipt
+            WHERE receipt.receipt_id = NEW.continuation_receipt_id
+              AND receipt.response_fingerprint IS NOT NULL
+          )
+        BEGIN
+          SELECT RAISE(ABORT, 'compaction continuation response is not durable');
+        END
+      `)
+    })
+  },
+} satisfies DatabaseMigration.Migration
diff --git a/packages/core/src/deepagent/activity-authority.sql.ts b/packages/core/src/deepagent/activity-authority.sql.ts
index f522b63c..4e55bcae 100644
--- a/packages/core/src/deepagent/activity-authority.sql.ts
+++ b/packages/core/src/deepagent/activity-authority.sql.ts
@@ -6,7 +6,9 @@ import { SessionTable } from "../session/sql"
 import type { SessionSchema } from "../session/schema"
 import type { CompletionCriterion } from "./goal-loop"
 
-export type ActivityKind = "legacy" | "v2"
+export type ActivityKind = "legacy" | "v2" | "facade"
+export type FacadeActivitySubkind = "task" | "goal" | "panel"
+export type FacadeActivityState = "active" | "settled" | "failed" | "interrupted" | "recovery_required"
 export type ActivityObjectiveState = "active" | "completed" | "needs_human" | "interrupted" | "recovery_required"
 export type PermissionRequestState =
   | "pending"
@@ -49,6 +51,40 @@ export const SessionActivityObjectiveTable = sqliteTable(
   ],
 )
 
+// FEAT-011 T1 — facade activity base table. Mirrors the session_legacy_activity terminal
+// semantics (active carries no settled_at/reason_code; terminal states require both) and the
+// v2 single-active invariant, scoped per parent session + subkind: opening a new facade
+// activity requires settling the previous active one of the same subkind first (BUG-004).
+export const SessionFacadeActivityTable = sqliteTable(
+  "session_facade_activity",
+  {
+    activity_id: text().primaryKey(),
+    subkind: text().$type<FacadeActivitySubkind>().notNull(),
+    parent_session_id: text()
+      .$type<SessionSchema.ID>()
+      .notNull()
+      .references(() => SessionTable.id, { onDelete: "cascade" }),
+    owner_session_id: text()
+      .$type<SessionSchema.ID>()
+      .references(() => SessionTable.id, { onDelete: "cascade" }),
+    spawn_tool_call_id: text(),
+    objective_text: text(),
+    budget_json: text({ mode: "json" }).$type<unknown>(),
+    state: text().$type<FacadeActivityState>().notNull(),
+    reason_code: text(),
+    source: text(),
+    created_at: integer().notNull(),
+    settled_at: integer(),
+    mutation_epoch: integer().notNull(),
+  },
+  (table) => [
+    uniqueIndex("session_facade_activity_active_idx")
+      .on(table.parent_session_id, table.subkind)
+      .where(sql`${table.state} = 'active'`),
+    index("session_facade_activity_parent_idx").on(table.parent_session_id, table.state, table.created_at),
+  ],
+)
+
 export const SessionActivityEvidenceTable = sqliteTable(
   "session_activity_evidence",
   {
diff --git a/packages/core/src/deepagent/activity-authority.ts b/packages/core/src/deepagent/activity-authority.ts
index 0203293c..37de3b97 100644
--- a/packages/core/src/deepagent/activity-authority.ts
+++ b/packages/core/src/deepagent/activity-authority.ts
@@ -23,6 +23,7 @@ import {
   SessionActivityPermissionOnceConsumptionTable,
   SessionActivityPermissionRequestTable,
   SessionActivityProgressObservationTable,
+  SessionFacadeActivityTable,
 } from "./activity-authority.sql"
 
 type DatabaseClient = Database.Interface["db"]
@@ -119,7 +120,7 @@ export type Reconstructed = {
 }
 
 export class NotFoundError extends Schema.TaggedErrorClass<NotFoundError>()("ActivityAuthority.NotFoundError", {
-  activityKind: Schema.Literals(["legacy", "v2"]),
+  activityKind: Schema.Literals(["legacy", "v2", "facade"]),
   activityID: Schema.String,
 }) {}
 
@@ -446,6 +447,11 @@ export const settle = Effect.fn("DeepAgentActivityAuthority.settle")(function* (
     .transaction(
       (tx) =>
         Effect.gen(function* () {
+          // FEAT-011 T2 — facade activities are fully isolated from the federation objective
+          // machinery (the objective/permission child tables keep ('legacy','v2') CHECKs), so
+          // settlement is raw CAS on the facade base table keyed by activity_id, mirroring the
+          // legacy branch shape. expectedVersion is the mutation_epoch CAS token.
+          if (input.activityKind === "facade") return yield* settleFacade(tx, input)
           const current = yield* tx.select().from(SessionActivityObjectiveTable).where(activityWhere(input)).get()
           if (!current) return yield* notFound(input)
           if (
@@ -539,6 +545,87 @@ export const settle = Effect.fn("DeepAgentActivityAuthority.settle")(function* (
     .pipe(Effect.catchTag("EffectDrizzleQueryError", Effect.die), Effect.catchTag("SqlError", Effect.die))
 })
 
+// FEAT-011 T2 — facade settlement path. Facade activities never own a federation objective
+// row (the objective/permission child tables keep ('legacy','v2') CHECKs by design), so this
+// settles the facade base table directly with a CAS keyed by activity_id. Three-state mapping
+// mirrors the v2 branch: completed→'settled', interrupted→'interrupted', and
+// recovery_required→'failed' — the facade base has no recovery_required shape of its own, so a
+// recovery-required settlement is persisted as base state 'failed' (same modeling as the v2
+// federation base, where 'failed' means recovery is required). expectedVersion is the
+// mutation_epoch CAS token; the base legal-update trigger additionally enforces the one-shot
+// active→terminal transition with reason_code + settled_at.
+function settleFacade(
+  tx: Transaction,
+  input: ActivityRef & {
+    readonly expectedVersion: number
+    readonly state: "completed" | "interrupted" | "recovery_required"
+    readonly terminalReason: string
+  },
+) {
+  return Effect.gen(function* () {
+    const current = yield* tx
+      .select()
+      .from(SessionFacadeActivityTable)
+      .where(eq(SessionFacadeActivityTable.activity_id, input.activityID))
+      .get()
+    if (!current) return yield* notFound(input)
+    const baseState = input.state === "completed" ? "settled" : input.state === "recovery_required" ? "failed" : "interrupted"
+    const mapped = facadeObjective(current, input.state)
+    if (current.state === baseState && current.reason_code === input.terminalReason && current.settled_at !== null)
+      return mapped
+    if (current.mutation_epoch !== input.expectedVersion)
+      return yield* versionConflict(input.activityID, input.expectedVersion, current.mutation_epoch)
+    if (current.state !== "active")
+      return yield* new ConflictError({ entity: input.activityID, expected: "active", actual: current.state })
+    const now = yield* observedAtInTransaction(tx)
+    const updated = yield* tx
+      .update(SessionFacadeActivityTable)
+      .set({
+        state: baseState,
+        reason_code: input.terminalReason,
+        settled_at: now,
+        mutation_epoch: sql`${SessionFacadeActivityTable.mutation_epoch} + 1`,
+      })
+      .where(
+        and(
+          eq(SessionFacadeActivityTable.activity_id, input.activityID),
+          eq(SessionFacadeActivityTable.state, "active"),
+          eq(SessionFacadeActivityTable.mutation_epoch, input.expectedVersion),
+        ),
+      )
+      .returning()
+      .get()
+    if (!updated) return yield* versionConflict(input.activityID, input.expectedVersion, current.mutation_epoch)
+    return facadeObjective(updated, input.state)
+  })
+}
+
+// Projects a facade base row as the Objective shape settle callers expect (facade activities
+// carry no objective row). version maps mutation_epoch; settlement state maps back from the
+// base shape ('settled'→completed, 'failed'→recovery_required, otherwise as-is).
+function facadeObjective(
+  row: typeof SessionFacadeActivityTable.$inferSelect,
+  state: ActivityObjectiveState,
+): Objective {
+  return {
+    activityKind: "facade",
+    activityID: row.activity_id,
+    sessionID: row.parent_session_id,
+    version: row.mutation_epoch,
+    admissionFingerprint: "facade-spawn:" + (row.spawn_tool_call_id ?? row.activity_id),
+    ...(row.objective_text ? { objectiveText: row.objective_text } : {}),
+    completionCriteria: [],
+    enforcementState: "disabled",
+    state,
+    noProgressCount: 0,
+    latestObservationRevision: -1,
+    ...(row.reason_code ? { terminalReason: row.reason_code } : {}),
+    createdAt: row.created_at,
+    updatedAt: row.settled_at ?? row.created_at,
+    ...(row.settled_at !== null ? { settledAt: row.settled_at } : {}),
+  }
+}
+
 export const reconstruct = Effect.fn("DeepAgentActivityAuthority.reconstruct")(function* (input: ActivityRef) {
   const { db } = yield* Database.Service
   const row = yield* db
@@ -812,11 +899,17 @@ const decidePermissionInternal = Effect.fn("DeepAgentActivityAuthority.decidePer
                 ? yield* tx.get<{ state: string }>(sql`
                     SELECT state FROM session_legacy_activity WHERE activity_id = ${request.activity_id}
                   `)
-                : yield* tx
-                    .select({ state: SessionActivityTable.state })
-                    .from(SessionActivityTable)
-                    .where(eq(SessionActivityTable.activity_id, request.activity_id))
-                    .get()
+                : request.activity_kind === "facade"
+                  ? yield* tx
+                      .select({ state: SessionFacadeActivityTable.state })
+                      .from(SessionFacadeActivityTable)
+                      .where(eq(SessionFacadeActivityTable.activity_id, request.activity_id))
+                      .get()
+                  : yield* tx
+                      .select({ state: SessionActivityTable.state })
+                      .from(SessionActivityTable)
+                      .where(eq(SessionActivityTable.activity_id, request.activity_id))
+                      .get()
             if (objective?.state !== "active" || base?.state !== "active")
               return yield* new ConflictError({
                 entity: request.activity_id,
@@ -981,17 +1074,30 @@ const decidePermissionInternal = Effect.fn("DeepAgentActivityAuthority.decidePer
                       WHERE activity_id = ${request.activity_id} AND state = 'active'
                       RETURNING activity_id
                     `)
-                  : yield* tx
-                      .update(SessionActivityTable)
-                      .set({ state: "interrupted", settled_at: now })
-                      .where(
-                        and(
-                          eq(SessionActivityTable.activity_id, request.activity_id),
-                          eq(SessionActivityTable.state, "active"),
-                        ),
-                      )
-                      .returning({ activityID: SessionActivityTable.activity_id })
-                      .get()
+                  : request.activity_kind === "facade"
+                    ? // FEAT-011 T2 — facade interruption mirrors the v2 branch (CAS on active).
+                      yield* tx
+                        .update(SessionFacadeActivityTable)
+                        .set({ state: "interrupted", reason_code: terminalReason, settled_at: now })
+                        .where(
+                          and(
+                            eq(SessionFacadeActivityTable.activity_id, request.activity_id),
+                            eq(SessionFacadeActivityTable.state, "active"),
+                          ),
+                        )
+                        .returning({ activityID: SessionFacadeActivityTable.activity_id })
+                        .get()
+                    : yield* tx
+                        .update(SessionActivityTable)
+                        .set({ state: "interrupted", settled_at: now })
+                        .where(
+                          and(
+                            eq(SessionActivityTable.activity_id, request.activity_id),
+                            eq(SessionActivityTable.state, "active"),
+                          ),
+                        )
+                        .returning({ activityID: SessionActivityTable.activity_id })
+                        .get()
               if (!base)
                 return yield* new ConflictError({
                   entity: request.activity_id,
@@ -1326,11 +1432,17 @@ export const consumeOnce = Effect.fn("DeepAgentActivityAuthority.consumeOnce")(f
               ? yield* tx.get<{ state: string }>(sql`
                   SELECT state FROM session_legacy_activity WHERE activity_id = ${request.activity_id}
                 `)
-              : yield* tx
-                  .select({ state: SessionActivityTable.state })
-                  .from(SessionActivityTable)
-                  .where(eq(SessionActivityTable.activity_id, request.activity_id))
-                  .get()
+              : request.activity_kind === "facade"
+                ? yield* tx
+                    .select({ state: SessionFacadeActivityTable.state })
+                    .from(SessionFacadeActivityTable)
+                    .where(eq(SessionFacadeActivityTable.activity_id, request.activity_id))
+                    .get()
+                : yield* tx
+                    .select({ state: SessionActivityTable.state })
+                    .from(SessionActivityTable)
+                    .where(eq(SessionActivityTable.activity_id, request.activity_id))
+                    .get()
           if (objective?.state !== "active" || base?.state !== "active")
             return yield* new ConflictError({
               entity: request.activity_id,
@@ -1460,11 +1572,17 @@ export const beginPermissionEffect = Effect.fn("DeepAgentActivityAuthority.begin
               ? yield* tx.get<{ state: string }>(sql`
                   SELECT state FROM session_legacy_activity WHERE activity_id = ${request.activity_id}
                 `)
-              : yield* tx
-                  .select({ state: SessionActivityTable.state })
-                  .from(SessionActivityTable)
-                  .where(eq(SessionActivityTable.activity_id, request.activity_id))
-                  .get()
+              : request.activity_kind === "facade"
+                ? yield* tx
+                    .select({ state: SessionFacadeActivityTable.state })
+                    .from(SessionFacadeActivityTable)
+                    .where(eq(SessionFacadeActivityTable.activity_id, request.activity_id))
+                    .get()
+                : yield* tx
+                    .select({ state: SessionActivityTable.state })
+                    .from(SessionActivityTable)
+                    .where(eq(SessionActivityTable.activity_id, request.activity_id))
+                    .get()
           if (objective?.state !== "active" || base?.state !== "active")
             return yield* new ConflictError({
               entity: request.activity_id,
@@ -1952,17 +2070,30 @@ function recoverPendingPermissionsInTransaction(
                   WHERE activity_id = ${request.activity_id} AND state = 'active'
                   RETURNING activity_id
                 `)
-              : yield* tx
-                  .update(SessionActivityTable)
-                  .set({ state: "interrupted", settled_at: now })
-                  .where(
-                    and(
-                      eq(SessionActivityTable.activity_id, request.activity_id),
-                      eq(SessionActivityTable.state, "active"),
-                    ),
-                  )
-                  .returning({ activityID: SessionActivityTable.activity_id })
-                  .get()
+              : request.activity_kind === "facade"
+                ? // FEAT-011 T2 — facade interruption mirrors the v2 branch (CAS on active).
+                  yield* tx
+                    .update(SessionFacadeActivityTable)
+                    .set({ state: "interrupted", reason_code: terminalReason, settled_at: now })
+                    .where(
+                      and(
+                        eq(SessionFacadeActivityTable.activity_id, request.activity_id),
+                        eq(SessionFacadeActivityTable.state, "active"),
+                      ),
+                    )
+                    .returning({ activityID: SessionFacadeActivityTable.activity_id })
+                    .get()
+                : yield* tx
+                    .update(SessionActivityTable)
+                    .set({ state: "interrupted", settled_at: now })
+                    .where(
+                      and(
+                        eq(SessionActivityTable.activity_id, request.activity_id),
+                        eq(SessionActivityTable.state, "active"),
+                      ),
+                    )
+                    .returning({ activityID: SessionActivityTable.activity_id })
+                    .get()
           if (!base)
             return yield* new ConflictError({
               entity: request.activity_id,
@@ -2191,17 +2322,31 @@ function recoverActivityToRequired(
             WHERE activity_id = ${objective.activity_id} AND state = 'active'
             RETURNING activity_id
           `)
-        : yield* tx
-            .update(SessionActivityTable)
-            .set({ state: "failed", settled_at: now })
-            .where(
-              and(
-                eq(SessionActivityTable.activity_id, objective.activity_id),
-                eq(SessionActivityTable.state, "active"),
-              ),
-            )
-            .returning({ activityID: SessionActivityTable.activity_id })
-            .get()
+        : objective.activity_kind === "facade"
+          ? // FEAT-011 T2 — facade recovery follows the v2 mapping: recovery_required is persisted
+            // as base state 'failed' (CAS on active), unlike legacy which keeps 'recovery_required'.
+            yield* tx
+              .update(SessionFacadeActivityTable)
+              .set({ state: "failed", reason_code: terminalReason, settled_at: now })
+              .where(
+                and(
+                  eq(SessionFacadeActivityTable.activity_id, objective.activity_id),
+                  eq(SessionFacadeActivityTable.state, "active"),
+                ),
+              )
+              .returning({ activityID: SessionFacadeActivityTable.activity_id })
+              .get()
+          : yield* tx
+              .update(SessionActivityTable)
+              .set({ state: "failed", settled_at: now })
+              .where(
+                and(
+                  eq(SessionActivityTable.activity_id, objective.activity_id),
+                  eq(SessionActivityTable.state, "active"),
+                ),
+              )
+              .returning({ activityID: SessionActivityTable.activity_id })
+              .get()
     if (!base)
       return yield* new ConflictError({
         entity: objective.activity_id,
@@ -2266,11 +2411,17 @@ function reconcilePermissionFanout(
           ? yield* tx.get<{ state: string }>(sql`
               SELECT state FROM session_legacy_activity WHERE activity_id = ${sibling.activity_id}
             `)
-          : yield* tx
-              .select({ state: SessionActivityTable.state })
-              .from(SessionActivityTable)
-              .where(eq(SessionActivityTable.activity_id, sibling.activity_id))
-              .get()
+          : sibling.activity_kind === "facade"
+            ? yield* tx
+                .select({ state: SessionFacadeActivityTable.state })
+                .from(SessionFacadeActivityTable)
+                .where(eq(SessionFacadeActivityTable.activity_id, sibling.activity_id))
+                .get()
+            : yield* tx
+                .select({ state: SessionActivityTable.state })
+                .from(SessionActivityTable)
+                .where(eq(SessionActivityTable.activity_id, sibling.activity_id))
+                .get()
       const expired = sibling.expires_at !== null && sibling.expires_at <= input.decidedAt
       const activityTerminal =
         !objective ||
@@ -2372,17 +2523,30 @@ function reconcilePermissionFanout(
               WHERE activity_id = ${sibling.activity_id} AND state = 'active'
               RETURNING activity_id
             `)
-          : yield* tx
-              .update(SessionActivityTable)
-              .set({ state: "interrupted", settled_at: input.decidedAt })
-              .where(
-                and(
-                  eq(SessionActivityTable.activity_id, sibling.activity_id),
-                  eq(SessionActivityTable.state, "active"),
-                ),
-              )
-              .returning({ activityID: SessionActivityTable.activity_id })
-              .get()
+          : sibling.activity_kind === "facade"
+            ? // FEAT-011 T2 — facade interruption mirrors the v2 branch (CAS on active).
+              yield* tx
+                .update(SessionFacadeActivityTable)
+                .set({ state: "interrupted", reason_code: terminalReason, settled_at: input.decidedAt })
+                .where(
+                  and(
+                    eq(SessionFacadeActivityTable.activity_id, sibling.activity_id),
+                    eq(SessionFacadeActivityTable.state, "active"),
+                  ),
+                )
+                .returning({ activityID: SessionFacadeActivityTable.activity_id })
+                .get()
+            : yield* tx
+                .update(SessionActivityTable)
+                .set({ state: "interrupted", settled_at: input.decidedAt })
+                .where(
+                  and(
+                    eq(SessionActivityTable.activity_id, sibling.activity_id),
+                    eq(SessionActivityTable.state, "active"),
+                  ),
+                )
+                .returning({ activityID: SessionActivityTable.activity_id })
+                .get()
       if (!interrupted)
         return yield* new ConflictError({
           entity: sibling.activity_id,
diff --git a/packages/core/src/deepagent/deepagent-event-bus.ts b/packages/core/src/deepagent/deepagent-event-bus.ts
index 1791352b..5256bec6 100644
--- a/packages/core/src/deepagent/deepagent-event-bus.ts
+++ b/packages/core/src/deepagent/deepagent-event-bus.ts
@@ -4,7 +4,7 @@ import { Context, Effect, Layer, PubSub, Stream } from "effect"
 import { and, asc, desc, eq, isNull, lte, lt, gt, notExists, or, sql } from "drizzle-orm"
 import { alias } from "drizzle-orm/sqlite-core"
 import { Database } from "../database/database"
-import { DeepAgentEventDeliveryTable, DeepAgentEventDropTable, DeepAgentEventTable, DeepAgentConsumerGroupTable } from "./deepagent-event-sql"
+import { DeepAgentEventDeliveryTable, DeepAgentEventDropTable, DeepAgentEventTable, DeepAgentConsumerGroupTable, DeepAgentRateLimitBucketTable } from "./deepagent-event-sql"
 import { ApprovalQueueTable } from "./approval-queue-sql"
 import { DeepAgentEvent } from "./deepagent-event"
 import { RateLimiter } from "./rate-limiter"
@@ -71,8 +71,10 @@ export interface Interface {
    * NOT persisted (no row, no dispatch). Otherwise the persisted event is returned as `{ published }`.
    * The discriminated union lets the caller observe the drop (e.g. to log a blocked-push counter).
    *
-   * Keyed per workspaceID (fixed-window, in-memory). This is ADDITIVE — existing `publish` callers are
-   * untouched and bypass the gate entirely.
+   * Keyed per workspaceID (fixed-window, DURABLE — the bucket lives in `deepagent_rate_limit_bucket`
+   * and is updated inside an immediate transaction, so N processes sharing the DB enforce ONE
+   * combined quota; RISK-006). This is ADDITIVE — existing `publish` callers are untouched and
+   * bypass the gate entirely.
    */
   readonly tryPublish: (
     input: DeepAgentEvent.PublishInput,
@@ -134,6 +136,32 @@ export interface Interface {
   }) => Effect.Effect<void>
   /** §A3 retry scan — pending deliveries whose backoff has elapsed (Router/Scheduler drives re-delivery). */
   readonly dueRetries: (now?: number) => Effect.Effect<ReadonlyArray<DeliveryTracker>>
+  /**
+   * RISK-001: atomically claim due pending deliveries for ONE subscription group. Stamps a fresh
+   * claim token + lease inside an immediate transaction; rows under a live lease are skipped and
+   * expired leases are re-claimable. The returned opaque token must be passed to ackClaim/nackClaim
+   * so a stale worker cannot settle a delivery that a newer claimant already owns.
+   */
+  readonly claimDue: (input: {
+    readonly subscriptionGroup: string
+    readonly claimantId: string
+    readonly now?: number
+    readonly limit?: number
+    readonly leaseMs?: number
+  }) => Effect.Effect<{ readonly claimToken: string; readonly deliveries: ReadonlyArray<DeliveryTracker> }>
+  /** Ack conditioned on the claim token; a stale token (or non-pending row) is a no-op → false. */
+  readonly ackClaim: (input: {
+    readonly subscriptionGroup: string
+    readonly eventID: DeepAgentEvent.ID
+    readonly claimToken: string
+  }) => Effect.Effect<boolean>
+  /** Nack conditioned on the claim token; a stale token is a no-op → false. Clears the claim. */
+  readonly nackClaim: (input: {
+    readonly subscriptionGroup: string
+    readonly eventID: DeepAgentEvent.ID
+    readonly claimToken: string
+    readonly reason: string
+  }) => Effect.Effect<boolean>
   /**
    * K40-4: real pending-delivery count per workspace — the durable backlog depth for the
    * backpressure gate. Counts deepagent_event_delivery rows with status='pending' scoped
@@ -163,11 +191,10 @@ export interface Interface {
     readonly limit?: number
   }) => Effect.Effect<{ readonly deletedEvents: number }>
   /**
-   * §E2 — prune the publish rate-limiter's per-workspace buckets whose fixed window has elapsed as of
-   * `now`, bounding the limiter's memory for idle workspaces. Returns how many buckets were dropped.
-   * The limiter lives inside this layer's closure; this exposes its `sweep` so a periodic daemon
-   * (v4-event-runtime) can drive it on a cadence without reaching into private state. `now` defaults to
-   * the injected clock (deterministic in tests). A no-op that never throws — safe to call any time.
+   * §E2 — prune the publish rate-limiter's durable per-workspace buckets
+   * (`deepagent_rate_limit_bucket`) whose fixed window has elapsed as of `now`, bounding the table
+   * for idle workspaces. Returns how many buckets were dropped. `now` defaults to the injected
+   * clock (deterministic in tests). A no-op that never throws — safe to call any time.
    */
   readonly sweepPublishLimiter: (now?: number) => Effect.Effect<{ readonly prunedBuckets: number }>
   /**
@@ -176,8 +203,11 @@ export interface Interface {
    * With durable registration, `publish` writes delivery rows for ALL registered groups — not just the
    * in-memory live ones — so an offline consumer catches up via `dueRetries` + `replay` on reconnect.
    * Idempotent: re-registering the same group updates `last_seen_at`.
+   *
+   * RISK-006: `workspaceID` records the tenant the group consumes for; defaults to "" (global /
+   * unscoped) so existing callers stay source-compatible.
    */
-  readonly registerConsumerGroup: (groupId: string, typeFilter?: string) => Effect.Effect<void>
+  readonly registerConsumerGroup: (groupId: string, typeFilter?: string, workspaceID?: string) => Effect.Effect<void>
   /**
    * K40-2: Durably unregister a consumer group. After this call `publish` will no longer create delivery
    * rows for this group. Live in-memory streams for this group are NOT terminated — they finish naturally.
@@ -187,6 +217,16 @@ export interface Interface {
 
 export class Service extends Context.Service<Service, Interface>()("@deepagent-code/DeepAgentEventBus") {}
 
+// RISK-006 — durable priority ordering for dueRetries/claimDue: critical(3) > high(2) > normal(1)
+// > low(0). NULL (pre-migration rows) falls into ELSE and ranks as "normal". Combined with
+// next_attempt_at ASC this keeps FIFO order WITHIN a priority class.
+const priorityRank = sql<number>`case
+  when ${DeepAgentEventDeliveryTable.priority} = 'critical' then 3
+  when ${DeepAgentEventDeliveryTable.priority} = 'high' then 2
+  when ${DeepAgentEventDeliveryTable.priority} = 'low' then 0
+  else 1
+end`
+
 export interface LayerOptions {
   readonly maxAttempts?: number
   readonly backoffBaseMs?: number
@@ -236,10 +276,6 @@ export const layerWith = (options?: LayerOptions) =>
       // `subscribe` for grouped consumers merges both channels (highPriorityLive first), so when
       // multiple events are queued, critical/high are processed before normal/low.
       const highPriorityLive = yield* PubSub.unbounded<DeepAgentEvent.Event>()
-      // §A4/§E2 — ONE in-memory fixed-window limiter for the whole bus, keyed per workspaceID. Only
-      // `tryPublish` consults it; `publish` is unchanged. `now` (the injected clock) drives window
-      // resets so tests cross a boundary deterministically.
-      const publishLimiter = new RateLimiter.Service()
 
       yield* Effect.addFinalizer(() =>
         Effect.all([PubSub.shutdown(live), PubSub.shutdown(highPriorityLive)], { concurrency: "unbounded" }).pipe(
@@ -285,8 +321,9 @@ export const layerWith = (options?: LayerOptions) =>
       const dbGroupsCache = new Map<string, string[]>()
       const invalidateDbGroupsCache = () => dbGroupsCache.clear()
 
-      const groupsFor = (eventType: string): Effect.Effect<ReadonlyArray<string>> => {
-        const cached = dbGroupsCache.get(eventType)
+      const groupsFor = (eventType: string, workspaceID: string): Effect.Effect<ReadonlyArray<string>> => {
+        const cacheKey = `${eventType}\n${workspaceID}`
+        const cached = dbGroupsCache.get(cacheKey)
         if (cached !== undefined) {
           // DB portion is cached; still merge with current live groups (always fresh, no DB).
           const live = liveGroupsFor(eventType)
@@ -300,14 +337,24 @@ export const layerWith = (options?: LayerOptions) =>
           .select({ group_id: DeepAgentConsumerGroupTable.group_id })
           .from(DeepAgentConsumerGroupTable)
           .where(
-            or(isNull(DeepAgentConsumerGroupTable.type_filter), eq(DeepAgentConsumerGroupTable.type_filter, eventType)),
+            and(
+              or(isNull(DeepAgentConsumerGroupTable.type_filter), eq(DeepAgentConsumerGroupTable.type_filter, eventType)),
+              // RISK-006 residual: dispatch routing is workspace-scoped. A workspace-bound consumer
+              // group (workspace_id != "") is owed only its own tenant's events; a global group
+              // (workspace_id = "") keeps receiving every workspace. Live in-memory groups carry no
+              // workspace, so they remain global (all current consumers register globally).
+              or(
+                eq(DeepAgentConsumerGroupTable.workspace_id, ""),
+                eq(DeepAgentConsumerGroupTable.workspace_id, workspaceID),
+              ),
+            ),
           )
           .all()
           .pipe(
             Effect.orDie,
             Effect.map((rows) => {
               const dbGroups = rows.map((r) => r.group_id)
-              dbGroupsCache.set(eventType, dbGroups)
+              dbGroupsCache.set(cacheKey, dbGroups)
               const live = liveGroupsFor(eventType)
               // Union: db-registered + live-only (not yet durable-registered), deduplicated.
               const seen = new Set<string>(dbGroups)
@@ -352,7 +399,7 @@ export const layerWith = (options?: LayerOptions) =>
           // past the read-check above hits UNIQUE(idempotency_key) → 0 rows → not the winner). Dispatch
           // happens AFTER commit, so a subscriber never observes an uncommitted event.
           // K40-2: groupsFor is now async (queries DB for durable groups + in-memory live groups).
-          const owed = yield* groupsFor(event.type)
+          const owed = yield* groupsFor(event.type, event.workspaceID)
           // §F1 event_publish_latency_ms — wall-clock delta (injected clock) around the persist
           // transaction. One now() before, one after; the delta is written on the row so Observability
           // can build the publish-latency histogram. Cheap + additive.
@@ -395,6 +442,9 @@ export const layerWith = (options?: LayerOptions) =>
                           attempts: 0,
                           last_error: null,
                           next_attempt_at: createdAt, // owed immediately until acked
+                          // RISK-006: denormalize the event's priority onto the delivery row so the
+                          // retry/claim scans can order high-priority work first without a join.
+                          priority: event.priority,
                           created_at: createdAt,
                           updated_at: createdAt,
                         })),
@@ -455,16 +505,68 @@ export const layerWith = (options?: LayerOptions) =>
             return { published: yield* publish(input) }
           }
           const limit = opts?.limit ?? RateLimiter.EVENT_PUBLISH_PER_WORKSPACE.limit
-          const admitted = publishLimiter.check(
-            input.workspaceID,
-            limit,
-            RateLimiter.EVENT_PUBLISH_PER_WORKSPACE.windowMs,
-            now(),
-          )
+          const admitted = yield* checkDurableLimit(input.workspaceID, limit, now())
           if (!admitted) return { dropped: "rate_limited" as const }
           return { published: yield* publish(input) }
         })
 
+      // RISK-006 §A4/§E2 — DURABLE fixed-window check-and-increment against
+      // `deepagent_rate_limit_bucket`. The immediate transaction takes the SQLite write lock up front,
+      // so the read-modify-write below cannot interleave with another process/bus instance: every
+      // producer sharing the DB consumes ONE combined per-workspace quota (the old in-memory Map gave
+      // each process its own). Windows are epoch-aligned (floor(now / windowMs)) so independent
+      // processes agree on the current window without coordination. `now` (the injected clock) drives
+      // window boundaries so tests cross them deterministically.
+      const checkDurableLimit = (workspaceID: string, limit: number, at: number) =>
+        db
+          .transaction(
+            () =>
+              Effect.gen(function* () {
+                const windowMs = RateLimiter.EVENT_PUBLISH_PER_WORKSPACE.windowMs
+                const windowStart = Math.floor(at / windowMs) * windowMs
+                const bucket = yield* db
+                  .select()
+                  .from(DeepAgentRateLimitBucketTable)
+                  .where(
+                    and(
+                      eq(DeepAgentRateLimitBucketTable.workspace_id, workspaceID),
+                      eq(DeepAgentRateLimitBucketTable.window_start, windowStart),
+                    ),
+                  )
+                  .get()
+                  .pipe(Effect.orDie)
+                if (bucket) {
+                  if (bucket.count >= limit) return false
+                  yield* db
+                    .update(DeepAgentRateLimitBucketTable)
+                    .set({ count: bucket.count + 1 })
+                    .where(
+                      and(
+                        eq(DeepAgentRateLimitBucketTable.workspace_id, workspaceID),
+                        eq(DeepAgentRateLimitBucketTable.window_start, windowStart),
+                      ),
+                    )
+                    .run()
+                    .pipe(Effect.orDie)
+                  return true
+                }
+                // Fresh window — seed count=1. A conflict cannot happen while we hold the write lock,
+                // but the upsert keeps the insert total should that ever change.
+                yield* db
+                  .insert(DeepAgentRateLimitBucketTable)
+                  .values([{ workspace_id: workspaceID, window_start: windowStart, count: 1 }])
+                  .onConflictDoUpdate({
+                    target: [DeepAgentRateLimitBucketTable.workspace_id, DeepAgentRateLimitBucketTable.window_start],
+                    set: { count: 1 },
+                  })
+                  .run()
+                  .pipe(Effect.orDie)
+                return true
+              }),
+            { behavior: "immediate" },
+          )
+          .pipe(Effect.orDie)
+
       const subscribe: Interface["subscribe"] = (input) => {
         const filtered = Stream.fromPubSub(live).pipe(
           Stream.filter((event) => (input.type ? event.type === input.type : true)),
@@ -747,12 +849,158 @@ export const layerWith = (options?: LayerOptions) =>
                 lte(DeepAgentEventDeliveryTable.next_attempt_at, at),
               ),
             )
-            .orderBy(asc(DeepAgentEventDeliveryTable.next_attempt_at))
+            // RISK-006: persistent priority — high/critical due work drains before normal/low.
+            .orderBy(desc(priorityRank), asc(DeepAgentEventDeliveryTable.next_attempt_at))
             .all()
             .pipe(Effect.orDie)
           return rows.map(trackerOf)
         })
 
+      // RISK-001: locked replacement for the dueRetries scan. The immediate transaction takes the
+      // SQLite write lock up front, so the SELECT-then-UPDATE below cannot interleave with another
+      // writer — exactly one claimant wins each row while its lease is live.
+      const claimDue: Interface["claimDue"] = (input) =>
+        Effect.uninterruptible(
+          db
+            .transaction(
+              () =>
+                Effect.gen(function* () {
+                  const at = input.now ?? now()
+                  const leaseMs = input.leaseMs ?? 5 * 60_000
+                  const limit = input.limit ?? 50
+                  const eligible = yield* db
+                    .select()
+                    .from(DeepAgentEventDeliveryTable)
+                    .where(
+                      and(
+                        eq(DeepAgentEventDeliveryTable.subscription_group, input.subscriptionGroup),
+                        eq(DeepAgentEventDeliveryTable.status, "pending"),
+                        lte(DeepAgentEventDeliveryTable.next_attempt_at, at),
+                        or(
+                          isNull(DeepAgentEventDeliveryTable.claim_token),
+                          lte(DeepAgentEventDeliveryTable.lease_expires_at, at),
+                        ),
+                      ),
+                    )
+                    // RISK-006: persistent priority — a limited claim takes high/critical rows first.
+                    .orderBy(desc(priorityRank), asc(DeepAgentEventDeliveryTable.next_attempt_at))
+                    .limit(limit)
+                    .all()
+                    .pipe(Effect.orDie)
+                  const claimToken = crypto.randomUUID()
+                  if (eligible.length === 0) return { claimToken, deliveries: [] as ReadonlyArray<DeliveryTracker> }
+                  yield* db
+                    .update(DeepAgentEventDeliveryTable)
+                    .set({
+                      claim_token: claimToken,
+                      claimant_id: input.claimantId,
+                      claimed_at: at,
+                      lease_expires_at: at + leaseMs,
+                      updated_at: at,
+                    })
+                    .where(
+                      or(
+                        ...eligible.map((row) =>
+                          and(
+                            eq(DeepAgentEventDeliveryTable.event_id, row.event_id),
+                            eq(DeepAgentEventDeliveryTable.subscription_group, row.subscription_group),
+                          ),
+                        ),
+                      ),
+                    )
+                    .run()
+                    .pipe(Effect.orDie)
+                  return { claimToken, deliveries: eligible.map(trackerOf) }
+                }),
+              { behavior: "immediate" },
+            )
+            .pipe(Effect.orDie),
+        )
+
+      const ackClaim: Interface["ackClaim"] = (input) =>
+        db
+          .update(DeepAgentEventDeliveryTable)
+          .set({
+            status: "delivered",
+            last_error: null,
+            next_attempt_at: null,
+            updated_at: now(),
+          })
+          .where(
+            and(
+              eq(DeepAgentEventDeliveryTable.event_id, input.eventID),
+              eq(DeepAgentEventDeliveryTable.subscription_group, input.subscriptionGroup),
+              eq(DeepAgentEventDeliveryTable.claim_token, input.claimToken),
+              eq(DeepAgentEventDeliveryTable.status, "pending"),
+            ),
+          )
+          .returning({ eventID: DeepAgentEventDeliveryTable.event_id })
+          .all()
+          .pipe(Effect.map((rows) => rows.length > 0), Effect.orDie)
+
+      const nackClaim: Interface["nackClaim"] = (input) =>
+        Effect.gen(function* () {
+          const transition = yield* Effect.uninterruptible(
+            db
+              .transaction(
+                () =>
+                  Effect.gen(function* () {
+                    const current = yield* db
+                      .select()
+                      .from(DeepAgentEventDeliveryTable)
+                      .where(
+                        and(
+                          eq(DeepAgentEventDeliveryTable.event_id, input.eventID),
+                          eq(DeepAgentEventDeliveryTable.subscription_group, input.subscriptionGroup),
+                          eq(DeepAgentEventDeliveryTable.claim_token, input.claimToken),
+                        ),
+                      )
+                      .get()
+                      .pipe(Effect.orDie)
+                    // Stale token or a row that already settled — the claim no longer owns it.
+                    if (!current || current.status !== "pending")
+                      return { applied: false, justDied: false, attempts: 0 }
+                    const attempts = current.attempts + 1
+                    const dead = attempts >= maxAttempts
+                    const at = now()
+                    const nextAttemptAt = dead ? null : at + backoffBaseMs * 2 ** (attempts - 1)
+                    yield* db
+                      .update(DeepAgentEventDeliveryTable)
+                      .set({
+                        status: dead ? "dead" : "pending",
+                        attempts,
+                        last_error: input.reason,
+                        next_attempt_at: nextAttemptAt,
+                        // release the claim: a pending row is eligible for the next claimant; a dead
+                        // row never re-enters the retry scan.
+                        claim_token: null,
+                        claimant_id: null,
+                        claimed_at: null,
+                        lease_expires_at: null,
+                        updated_at: at,
+                      })
+                      .where(
+                        and(
+                          eq(DeepAgentEventDeliveryTable.event_id, input.eventID),
+                          eq(DeepAgentEventDeliveryTable.subscription_group, input.subscriptionGroup),
+                          eq(DeepAgentEventDeliveryTable.claim_token, input.claimToken),
+                        ),
+                      )
+                      .run()
+                      .pipe(Effect.orDie)
+                    return { applied: true, justDied: dead, attempts }
+                  }),
+                { behavior: "immediate" },
+              )
+              .pipe(Effect.orDie),
+          )
+          if (transition.justDied)
+            yield* emitDlqAlert(input.eventID, input.subscriptionGroup, input.reason, transition.attempts).pipe(
+              Effect.catchCause(() => Effect.void),
+            )
+          return transition.applied
+        })
+
       // K40-4: real durable backlog depth per workspace — count pending delivery rows whose source event
       // belongs to the given workspace. This is the authoritative backpressure signal: it reflects the
       // number of events that are owed to at least one consumer group but not yet acked. Uses the existing
@@ -873,22 +1121,41 @@ export const layerWith = (options?: LayerOptions) =>
           )
           .pipe(Effect.orDie)
 
-      // §E2 — drive the in-memory rate-limiter's stale-window prune. Synchronous + total (never fails),
-      // wrapped in Effect.sync so the daemon can schedule it uniformly with the other bus effects.
+      // §E2 — prune elapsed durable rate-limit windows (RISK-006). A bucket's window has elapsed once
+      // `window_start + windowMs <= now`. Returns how many buckets were dropped.
       const sweepPublishLimiter: Interface["sweepPublishLimiter"] = (nowArg) =>
-        Effect.sync(() => ({ prunedBuckets: publishLimiter.sweep(nowArg ?? now()) }))
+        Effect.gen(function* () {
+          const at = nowArg ?? now()
+          const windowMs = RateLimiter.EVENT_PUBLISH_PER_WORKSPACE.windowMs
+          const pruned = yield* db
+            .delete(DeepAgentRateLimitBucketTable)
+            .where(lte(DeepAgentRateLimitBucketTable.window_start, at - windowMs))
+            .returning({ workspace_id: DeepAgentRateLimitBucketTable.workspace_id })
+            .all()
+            .pipe(Effect.orDie)
+          return { prunedBuckets: pruned.length }
+        })
 
       // K40-2: durable consumer group registration — persists group identity so publish writes delivery
       // rows for offline groups too. Both methods are idempotent; registerConsumerGroup upserts.
       // PERF: both methods invalidate dbGroupsCache so the next groupsFor re-reads from DB.
-      const registerConsumerGroup: Interface["registerConsumerGroup"] = (groupId, typeFilter) => {
+      const registerConsumerGroup: Interface["registerConsumerGroup"] = (groupId, typeFilter, workspaceID) => {
         const at = now()
+        const workspace = workspaceID ?? ""
         return db
           .insert(DeepAgentConsumerGroupTable)
-          .values([{ group_id: groupId, type_filter: typeFilter ?? null, registered_at: at, last_seen_at: at }])
+          .values([
+            {
+              group_id: groupId,
+              type_filter: typeFilter ?? null,
+              workspace_id: workspace,
+              registered_at: at,
+              last_seen_at: at,
+            },
+          ])
           .onConflictDoUpdate({
             target: DeepAgentConsumerGroupTable.group_id,
-            set: { type_filter: typeFilter ?? null, last_seen_at: at },
+            set: { type_filter: typeFilter ?? null, workspace_id: workspace, last_seen_at: at },
           })
           .run()
           .pipe(Effect.orDie, Effect.asVoid, Effect.tap(() => Effect.sync(invalidateDbGroupsCache)))
@@ -907,6 +1174,9 @@ export const layerWith = (options?: LayerOptions) =>
         subscribe,
         ack,
         nack,
+        claimDue,
+        ackClaim,
+        nackClaim,
         replay,
         recentByType,
         deadLetters,
diff --git a/packages/core/src/deepagent/deepagent-event-sql.ts b/packages/core/src/deepagent/deepagent-event-sql.ts
index 2ff69ec4..0f05e639 100644
--- a/packages/core/src/deepagent/deepagent-event-sql.ts
+++ b/packages/core/src/deepagent/deepagent-event-sql.ts
@@ -1,4 +1,4 @@
-import { sqliteTable, text, integer, index, uniqueIndex } from "drizzle-orm/sqlite-core"
+import { index, integer, primaryKey, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core"
 import type { DeepAgentEvent } from "./deepagent-event"
 
 // V4.0 §A3 — durable persistence for the DeepAgent Event Bus. The design principle is "事件先持久化，
@@ -57,6 +57,16 @@ export const DeepAgentEventDeliveryTable = sqliteTable(
     attempts: integer().notNull(),
     last_error: text(),
     next_attempt_at: integer(),
+    // RISK-001: retry claim/lease. A pump atomically stamps token+claimant+lease before executing a
+    // due row; expired leases re-open the row for another claimant (migration 20260815120000).
+    claim_token: text(),
+    claimant_id: text(),
+    claimed_at: integer(),
+    lease_expires_at: integer(),
+    // RISK-006: denormalized event priority (written by publish) so dueRetries/claimDue can order
+    // high-priority work first without joining the event table. NULL = pre-migration rows, treated
+    // as "normal" by the ordering (migration 20260815130000).
+    priority: text().$type<DeepAgentEvent.EventPriority>(),
     created_at: integer().notNull(),
     updated_at: integer().notNull(),
   },
@@ -65,6 +75,8 @@ export const DeepAgentEventDeliveryTable = sqliteTable(
     uniqueIndex("deepagent_event_delivery_unique_idx").on(table.event_id, table.subscription_group),
     // retry scan: pending rows whose backoff has elapsed, oldest first.
     index("deepagent_event_delivery_due_idx").on(table.status, table.next_attempt_at),
+    // group-scoped claim scan (RISK-001).
+    index("deepagent_event_delivery_claim_idx").on(table.subscription_group, table.status, table.next_attempt_at),
   ],
 )
 
@@ -79,6 +91,9 @@ export const DeepAgentConsumerGroupTable = sqliteTable(
     group_id: text().primaryKey(),
     // null = wildcard (all event types); non-null = subscribe to one type only.
     type_filter: text(),
+    // RISK-006: the tenant this group consumes for. Default "" keeps pre-existing global/unscoped
+    // registrations valid (migration 20260815130000).
+    workspace_id: text().notNull().default(""),
     registered_at: integer().notNull(),
     // Updated on every live subscribe/unsubscribe so a sweep can distinguish stale registrations.
     last_seen_at: integer().notNull(),
@@ -86,6 +101,26 @@ export const DeepAgentConsumerGroupTable = sqliteTable(
   (table) => [
     // fast lookup: which groups are registered for a given event type?
     index("deepagent_consumer_group_type_idx").on(table.type_filter),
+    // RISK-006: tenant-scoped group scans.
+    index("deepagent_consumer_group_workspace_idx").on(table.workspace_id),
+  ],
+)
+
+// RISK-006 — durable fixed-window rate-limit buckets for the bus's tryPublish gate. One row per
+// (workspace, window); `window_start` is the epoch-aligned window start (floor(now / windowMs)).
+// The check-and-increment runs inside an immediate transaction, so N processes sharing the DB
+// enforce ONE combined quota per workspace (the in-memory Map gave each process its own ×N).
+export const DeepAgentRateLimitBucketTable = sqliteTable(
+  "deepagent_rate_limit_bucket",
+  {
+    workspace_id: text().notNull(),
+    window_start: integer().notNull(),
+    count: integer().notNull(),
+  },
+  (table) => [
+    primaryKey({ columns: [table.workspace_id, table.window_start] }),
+    // sweepPublishLimiter prunes elapsed windows by window_start alone (cross-workspace).
+    index("deepagent_rate_limit_bucket_window_idx").on(table.window_start),
   ],
 )
 // §A4 event_dropped — the durable DROP LOG. One append-only row per event the router shed (a §A4
diff --git a/packages/core/src/deepagent/domain-pack.ts b/packages/core/src/deepagent/domain-pack.ts
index a61d64be..a3e8265a 100644
--- a/packages/core/src/deepagent/domain-pack.ts
+++ b/packages/core/src/deepagent/domain-pack.ts
@@ -13,6 +13,14 @@ export type ProblemProfile = {
 }
 
 export type ActivateOptions = {
+  // FEAT-001: `override` is the legacy single-pack pin; `overrides` carries multi-pin (GUI pinned
+  // packs). Both are honored — single-value callers keep working unchanged.
   readonly override?: string
+  readonly overrides?: readonly string[]
   readonly threshold?: number
 }
+
+// Merge single + multi pin forms into one deduplicated list (FEAT-001 override type evolution).
+export const overridePackIds = (options?: ActivateOptions): readonly string[] => [
+  ...new Set([...(options?.override ? [options.override] : []), ...(options?.overrides ?? [])]),
+]
diff --git a/packages/core/src/deepagent/handoff-admission-sql.ts b/packages/core/src/deepagent/handoff-admission-sql.ts
new file mode 100644
index 00000000..ceb61b65
--- /dev/null
+++ b/packages/core/src/deepagent/handoff-admission-sql.ts
@@ -0,0 +1,49 @@
+import { index, sqliteTable, text, integer, uniqueIndex } from "drizzle-orm/sqlite-core"
+import type { DeepAgentEvent } from "./deepagent-event"
+
+// FEAT-008 — durable admission receipt for `agent.handoff.requested` processing.
+//
+// WHY A NEW TABLE (and not reuse of an existing one):
+//   - `deepagent_event_delivery` tracks DELIVERY lifecycle only (pending → delivered | dead). It has
+//     no handoff identity and cannot express the BUSINESS terminal states accepted/rejected, so after
+//     a crash it cannot answer "未处理 / 处理中 / 已完成" for a handoff request — only "was the event
+//     acked by this group".
+//   - `task_admission` is the subagent control-plane receipt for task_run admission (keyed by
+//     run/origin_key); its schema and idempotency semantics are orthogonal to handoff admission.
+//   - `agent_execution` is the per-task execution state machine; it is only touched once the handoff
+//     passes validation (a reject during validation — missing original event, security gate, etc. —
+//     must still leave a durable "rejected" receipt), and it never models the in-flight "processing"
+//     admission of the consumer itself.
+//
+// One row per handoffID. The consumer writes `processing` at the START of handling (before any
+// side-effecting decision) and settles to `accepted`/`rejected` on the terminal outcome. A row stuck
+// in `processing` after a crash means "not finished" — the retry pump re-admits it (begin() re-stamps
+// the claimant) once the delivery claim's lease lapses; a TERMINAL row is never overwritten, so a
+// redelivery short-circuits without re-running side effects.
+export const DeepAgentHandoffAdmissionTable = sqliteTable(
+  "deepagent_handoff_admission",
+  {
+    // the handoff request's identity (payload.handoffID) — one admission per handoff request.
+    handoff_id: text().primaryKey(),
+    // the bus event that carries the handoff request (§F2 trace spine).
+    event_id: text().$type<DeepAgentEvent.ID>().notNull(),
+    workspace_id: text().notNull(),
+    // processing → accepted | rejected. `processing` rows are "not finished" and re-admissible.
+    state: text().$type<"processing" | "accepted" | "rejected">().notNull(),
+    // who is currently handling (or last settled) the admission — the delivery claim's claimant id
+    // on the pump path, a stable consumer tag on the live-subscription path.
+    claimant_id: text().notNull(),
+    // the terminal reject reason (mirrors the rejectHandoff reason), null while processing/accepted.
+    reason: text(),
+    started_at: integer().notNull(),
+    updated_at: integer().notNull(),
+    // when the admission reached its terminal state (null while processing).
+    settled_at: integer(),
+  },
+  (table) => [
+    // crash-recovery scan: outstanding (non-terminal) admissions per tenant.
+    index("deepagent_handoff_admission_workspace_state_idx").on(table.workspace_id, table.state),
+    // trace lookup: which admission a handoff event produced.
+    uniqueIndex("deepagent_handoff_admission_event_idx").on(table.event_id),
+  ],
+)
diff --git a/packages/core/src/deepagent/handoff-admission.ts b/packages/core/src/deepagent/handoff-admission.ts
new file mode 100644
index 00000000..2e84f4b0
--- /dev/null
+++ b/packages/core/src/deepagent/handoff-admission.ts
@@ -0,0 +1,182 @@
+export * as HandoffAdmission from "./handoff-admission"
+
+import { Context, Effect, Layer } from "effect"
+import { and, eq } from "drizzle-orm"
+import { Database } from "../database/database"
+import type { DeepAgentEvent } from "./deepagent-event"
+import { DeepAgentHandoffAdmissionTable } from "./handoff-admission-sql"
+
+// FEAT-008 — durable admission receipts for `agent.handoff.requested` handling (table:
+// handoff-admission-sql.ts). Closes the "事件即状态" gap: before this receipt existed, a crash
+// between receiving a handoff event and settling it was indistinguishable from "never processed" —
+// the only record was the delivery row's ack/nack. Now every admission is durably stamped
+// `processing` BEFORE any side-effecting decision and settled to a terminal state exactly once:
+//
+//   no row      → 未处理 (never admitted)
+//   processing  → 处理中 — and after a crash this means "NOT finished": begin() re-admits it
+//                  (re-stamps the claimant) instead of treating it as settled. Recovery itself is
+//                  driven by the bus delivery claim/lease — an unacked delivery whose lease lapsed
+//                  is re-claimed by the retry pump, which re-runs the consumer and thus begin().
+//   accepted /  → 已完成: TERMINAL rows are never overwritten, so a redelivery short-circuits
+//   rejected      (begin() returns the terminal receipt) without re-running side effects.
+export type State = "processing" | "accepted" | "rejected"
+
+export interface Receipt {
+  readonly handoffID: string
+  readonly eventID: DeepAgentEvent.ID
+  readonly workspaceID: string
+  readonly state: State
+  readonly claimantID: string
+  readonly reason?: string
+  readonly startedAt: number
+  readonly updatedAt: number
+  readonly settledAt?: number
+}
+
+export interface Interface {
+  /**
+   * Admit a handoff request for processing. Inserts the `processing` receipt on first admission; a
+   * re-admission (crash recovery / redelivery) re-stamps claimant+updated_at ONLY while the row is
+   * still `processing`. A TERMINAL receipt is returned untouched — the caller must short-circuit.
+   */
+  readonly begin: (input: {
+    readonly handoffID: string
+    readonly eventID: DeepAgentEvent.ID
+    readonly workspaceID: string
+    readonly claimantID: string
+    readonly at?: number
+  }) => Effect.Effect<Receipt>
+  /**
+   * Settle the admission to its terminal state. Conditioned on `state = 'processing'` — settling an
+   * already-terminal (or missing) receipt is a no-op → false, so a stale claimant can never flip a
+   * terminal receipt its successor already settled.
+   */
+  readonly settle: (input: {
+    readonly handoffID: string
+    readonly state: "accepted" | "rejected"
+    readonly reason?: string
+    readonly at?: number
+  }) => Effect.Effect<boolean>
+  readonly get: (handoffID: string) => Effect.Effect<Receipt | undefined>
+}
+
+export class Service extends Context.Service<Service, Interface>()("@deepagent-code/HandoffAdmission") {}
+
+export interface LayerOptions {
+  readonly now?: () => number
+}
+
+const decode = (row: typeof DeepAgentHandoffAdmissionTable.$inferSelect): Receipt => ({
+  handoffID: row.handoff_id,
+  eventID: row.event_id,
+  workspaceID: row.workspace_id,
+  state: row.state,
+  claimantID: row.claimant_id,
+  ...(row.reason != null ? { reason: row.reason } : {}),
+  startedAt: row.started_at,
+  updatedAt: row.updated_at,
+  ...(row.settled_at != null ? { settledAt: row.settled_at } : {}),
+})
+
+export const layerWith = (options?: LayerOptions) =>
+  Layer.effect(
+    Service,
+    Effect.gen(function* () {
+      const { db } = yield* Database.Service
+      const now = options?.now ?? Date.now
+
+      const get: Interface["get"] = (handoffID) =>
+        db
+          .select()
+          .from(DeepAgentHandoffAdmissionTable)
+          .where(eq(DeepAgentHandoffAdmissionTable.handoff_id, handoffID))
+          .get()
+          .pipe(
+            Effect.orDie,
+            Effect.map((row) => (row ? decode(row) : undefined)),
+          )
+
+      const begin: Interface["begin"] = (input) =>
+        Effect.gen(function* () {
+          const at = input.at ?? now()
+          const existing = yield* get(input.handoffID)
+          // 已完成 is sticky: a terminal receipt survives every re-admission (crash recovery, lease
+          // re-claim, duplicate redelivery) — the caller observes the terminal state and acks without
+          // re-running accept/reject side effects.
+          if (existing && existing.state !== "processing") return existing
+          if (existing) {
+            // 处理中 after a crash: still "not finished" — take it over (fresh claimant stamp). The
+            // `state = 'processing'` guard keeps a racing terminal settle from being overwritten.
+            yield* db
+              .update(DeepAgentHandoffAdmissionTable)
+              .set({ claimant_id: input.claimantID, updated_at: at })
+              .where(
+                and(
+                  eq(DeepAgentHandoffAdmissionTable.handoff_id, input.handoffID),
+                  eq(DeepAgentHandoffAdmissionTable.state, "processing"),
+                ),
+              )
+              .run()
+              .pipe(Effect.orDie)
+            return { ...existing, claimantID: input.claimantID, updatedAt: at }
+          }
+          // 未处理 → first admission. A racing writer that already settled the row wins the conflict;
+          // re-read so the caller always sees the authoritative (possibly terminal) receipt.
+          yield* db
+            .insert(DeepAgentHandoffAdmissionTable)
+            .values({
+              handoff_id: input.handoffID,
+              event_id: input.eventID,
+              workspace_id: input.workspaceID,
+              state: "processing",
+              claimant_id: input.claimantID,
+              reason: null,
+              started_at: at,
+              updated_at: at,
+              settled_at: null,
+            })
+            .onConflictDoNothing({ target: DeepAgentHandoffAdmissionTable.handoff_id })
+            .run()
+            .pipe(Effect.orDie)
+          const settled = yield* get(input.handoffID)
+          return (
+            settled ?? {
+              handoffID: input.handoffID,
+              eventID: input.eventID,
+              workspaceID: input.workspaceID,
+              state: "processing" as const,
+              claimantID: input.claimantID,
+              startedAt: at,
+              updatedAt: at,
+            }
+          )
+        })
+
+      const settle: Interface["settle"] = (input) =>
+        db
+          .update(DeepAgentHandoffAdmissionTable)
+          .set({
+            state: input.state,
+            reason: input.reason ?? null,
+            updated_at: input.at ?? now(),
+            settled_at: input.at ?? now(),
+          })
+          .where(
+            and(
+              eq(DeepAgentHandoffAdmissionTable.handoff_id, input.handoffID),
+              eq(DeepAgentHandoffAdmissionTable.state, "processing"),
+            ),
+          )
+          .returning({ handoff_id: DeepAgentHandoffAdmissionTable.handoff_id })
+          .all()
+          .pipe(
+            Effect.orDie,
+            Effect.map((rows) => rows.length > 0),
+          )
+
+      return Service.of({ begin, settle, get })
+    }),
+  )
+
+export const layer = layerWith()
+export const defaultLayer = layer.pipe(Layer.provide(Database.defaultLayer))
diff --git a/packages/core/src/deepagent/knowledge-retriever.ts b/packages/core/src/deepagent/knowledge-retriever.ts
index baa135e5..aca8db1b 100644
--- a/packages/core/src/deepagent/knowledge-retriever.ts
+++ b/packages/core/src/deepagent/knowledge-retriever.ts
@@ -2,7 +2,7 @@ import type { AgentMode } from "./mode"
 import { knowledgeEnabled, strategyMethodologyEnabled, domainKnowledgeEnabled } from "./mode"
 import type { KnowledgeRefProjection, KnowledgeSynthesis, TaskContext, ToolContext } from "./prompt-policy"
 import * as knowledgeSource from "./knowledge-source"
-import { type ProblemProfile, type ActivateOptions } from "./domain-pack"
+import { type ProblemProfile, type ActivateOptions, overridePackIds } from "./domain-pack"
 import * as Registry from "./domain-pack-registry"
 import type { ExtendedProblemProfile } from "./domain-pack-registry"
 import { DeepAgentReleasedSnapshot, SnapshotIntegrityError } from "./released-snapshot"
@@ -39,6 +39,10 @@ export type RetrievalInput = {
   readonly blockedRefs?: readonly string[]
   readonly profile?: ProblemProfile // V3: activates domain packs (docs/31 §2)
   readonly domainOptions?: ActivateOptions // override / threshold for domain activation
+  // FEAT-002: the authoritative run profile, built ONCE by the gateway (profile-builder). When
+  // present, pack activation uses it verbatim so the recorded active_pack_set and the retrieval
+  // constraints share one source of truth. Absent => profileFromInput() fallback (legacy path).
+  readonly profileOverride?: ExtendedProblemProfile
   // V3.2.1 decision B (docs/34 §8): workspace isolation by path. When set, durable retrieval unions
   // user-global knowledge with project-shared knowledge for THIS workspace; project-shared knowledge
   // from OTHER workspaces is never read (different on-disk store). Absent => user-global only. The
@@ -1026,13 +1030,21 @@ const profileFromInput = (input: RetrievalInput): ExtendedProblemProfile => {
     ],
     repo_signals: [taskText(input), ...(input.profile?.signals ?? [])],
     round_signals: [...new Set(input.previousFailures > 0 ? ["previous_round_failure"] : [])],
-    user_overrides: input.domainOptions?.override ? [input.domainOptions.override] : [],
+    // FEAT-001: merge legacy single `override` with multi-pin `overrides` (GUI pinned packs).
+    user_overrides: [...overridePackIds(input.domainOptions)],
   }
 }
 
-const activateKnowledgePacks = (input: RetrievalInput): KnowledgeActivation => {
-  const profile = profileFromInput(input)
-  const threshold = input.domainOptions?.threshold ?? 0.5
+// FEAT-002: the pack activation computed from ONE profile — score → threshold → user overrides →
+// dependency/conflict resolution → core fallback packs. Exported so the gateway records the run's
+// active_pack_set from the exact same activation its retrieval constrains on (single authority).
+export type PackActivation = {
+  readonly activePackIds: readonly string[]
+  readonly primaryPackIds: readonly string[]
+  readonly activeDomains: readonly string[]
+}
+
+export const activationForProfile = (profile: ExtendedProblemProfile, threshold = 0.5): PackActivation => {
   const manifests = Registry.discover()
   const selected = Registry.score(profile, manifests)
     .filter((s) => s.score >= threshold)
@@ -1049,6 +1061,24 @@ const activateKnowledgePacks = (input: RetrievalInput): KnowledgeActivation => {
       .filter((id) => !CORE_FALLBACK_PACKS.includes(id as (typeof CORE_FALLBACK_PACKS)[number]))
       .sort(),
     activeDomains: [...new Set(activeManifests.flatMap((m) => m.domains))].sort(),
+  }
+}
+
+const activateKnowledgePacks = (input: RetrievalInput): KnowledgeActivation => {
+  // FEAT-002: prefer the gateway-supplied authoritative profile; profileFromInput is the fallback
+  // when no profileOverride is handed in (legacy/unpinned callers keep their previous behavior).
+  const profile = input.profileOverride
+    ? {
+        ...input.profileOverride,
+        // Keep honoring domainOptions pins even when a profileOverride is supplied (FEAT-001).
+        user_overrides: [
+          ...new Set([...input.profileOverride.user_overrides, ...overridePackIds(input.domainOptions)]),
+        ],
+      }
+    : profileFromInput(input)
+  const threshold = input.domainOptions?.threshold ?? 0.5
+  return {
+    ...activationForProfile(profile, threshold),
     keywords: keywordsForTask(input),
   }
 }
diff --git a/packages/core/src/deepagent/learning-lifecycle-trigger.ts b/packages/core/src/deepagent/learning-lifecycle-trigger.ts
index 445379b7..59a2d7ec 100644
--- a/packages/core/src/deepagent/learning-lifecycle-trigger.ts
+++ b/packages/core/src/deepagent/learning-lifecycle-trigger.ts
@@ -31,8 +31,11 @@ export type ProjectBoundary = {
 
 export type ObserveInput = SessionBoundary | ProjectBoundary
 
+// FEAT-004: the skipped reason is DISCRIMINATED — `no_observer_registered` means the notify seam had no
+// runtime observer wired (pure CLI path / observer torn down), while `no_exact_settled_run` means an
+// observer DID run but found no matching settled source run. Telemetry/operators can tell the two apart.
 export type Outcome =
-  | { readonly state: "skipped"; readonly reason: "no_exact_settled_run" }
+  | { readonly state: "skipped"; readonly reason: "no_exact_settled_run" | "no_observer_registered" }
   | { readonly state: "prepared" | "admitted"; readonly receiptId: string; readonly runId: string }
 
 export type RuntimeObserver = {
@@ -65,8 +68,10 @@ export const setRuntimeObserver = (observer: RuntimeObserver | undefined) => {
   runtimeObserver = observer
 }
 
+// FEAT-004: an UNREGISTERED observer is its own skip reason — the trigger never searched for a source
+// run at all (distinct from observe() finding no matching settled run).
 export const notify = (input: ObserveInput): Promise<Outcome> =>
-  runtimeObserver?.observe(input) ?? Promise.resolve({ state: "skipped", reason: "no_exact_settled_run" })
+  runtimeObserver?.observe(input) ?? Promise.resolve({ state: "skipped", reason: "no_observer_registered" })
 
 export const observe = Effect.fn("DeepAgentLearningLifecycleTrigger.observe")(function* (
   db: DatabaseClient,
diff --git a/packages/core/src/deepagent/lmn-events.ts b/packages/core/src/deepagent/lmn-events.ts
index 1a0c8b8c..0c63fe54 100644
--- a/packages/core/src/deepagent/lmn-events.ts
+++ b/packages/core/src/deepagent/lmn-events.ts
@@ -63,6 +63,42 @@ export const PANEL_VERDICT = "panel.verdict"
 // producer (a dead delivery OF a dlq.alert never re-alerts).
 export const DLQ_ALERT = "dlq.alert"
 
+// §9 S10 / FEAT-003 — a domain-pack pin change HAS happened: packsPin/packsUnpin publish this after
+// the pinned-set file is durably written (the file write stays authoritative; the event is a
+// post-commit observation, never a driver). It makes pack mutations EVENTED so downstream surfaces no
+// longer have to wait for their next natural recomputation to notice a pin.
+//
+// BENEFIT BOUNDARY (deliberate, do not widen without review):
+//   - the federation four graphs do NOT read pack scope (the knowledge adapter only ever consumes
+//     released snapshots), so no federation-side reaction is expected from this event;
+//   - intended consumers are legacy retrieval-surface audit + UI notification — they subscribe as
+//     needed; this producer only guarantees the event is emitted and subscribable.
+export const PACK_CHANGED = "pack.changed"
+
+// FEAT-006 — a Wiki/knowledge page HAS changed: WikiService.editKnowledge publishes this after a
+// governed human edit lands (append-only new version, human provenance), and the §L execution
+// archiver publishes it after persisting a session execution-archive page (payload carries
+// `archive:true` + sessionID). Like PACK_CHANGED it is a post-commit observation, never a driver —
+// the DocumentStore write stays authoritative; the event only makes the mutation EVENTED.
+//
+// IDEMPOTENCY (FEAT-003 pattern): idempotencyKey = wiki.page.changed:<docId>:<version> — the
+// doc+version pair is the natural dedup identity of the write; archive writes prefix the key with
+// `archive:` so an archive page and a human edit of the same doc never collide. The bus dedupes on
+// the key, so a redelivered write never double-publishes.
+//
+// SELF-LOOP GUARD: the event-driven archiver consumes ONLY ARCHIVE_TRIGGER_TYPES
+// (session.completed / goal.completed) — wiki.page.changed is NOT an archive trigger (asserted in
+// tests), so an archive write's own event can never re-trigger archival. The consumer-type filter
+// isolates the producer→event→consumer loop by construction (same anti-self-cascade posture as
+// DLQ_ALERT, which is guarded at the producer instead).
+//
+// BENEFIT BOUNDARY (deliberate, do not widen without review — mirrors the PACK_CHANGED contract):
+//   - the federation knowledge graphs only ever consume RELEASED snapshots, so NO federation-side
+//     reaction is expected from this event;
+//   - intended consumers are audit, UI notification, and future cache invalidation — they subscribe
+//     on demand; this producer only guarantees the event is emitted and subscribable.
+export const WIKI_PAGE_CHANGED = "wiki.page.changed"
+
 // §C/§D — a multi-agent subtask that could NOT auto-execute and needs a human: it exceeded the agent's
 // autonomy ceiling, or it is a level_5 suggestion_only action (never auto-runs). The Multi-Agent
 // Runtime publishes this so the §D2 Approval Queue surfaces it for a human decision (rather than the
diff --git a/packages/core/src/deepagent/pinned-packs.ts b/packages/core/src/deepagent/pinned-packs.ts
new file mode 100644
index 00000000..af979551
--- /dev/null
+++ b/packages/core/src/deepagent/pinned-packs.ts
@@ -0,0 +1,39 @@
+// FEAT-001: pinned domain packs (docs/34 §9 S10) persist per-workspace as a small JSON file under
+// the gateway memory dir (`<baseDir>/memory/pinned-packs.json`). The GUI writes it via the HTTP
+// handlers; the agent gateway reads it so pins actually shape retrieval. This module is the single
+// fault-tolerant reader/writer shared by both sides — missing or corrupt files degrade to "no pins",
+// never an error. It lives in core because the gateway (core) must read it and cannot import
+// deepagent-code; the handlers (deepagent-code) import it from core.
+
+import path from "node:path"
+import { mkdirSync, readFileSync, writeFileSync } from "node:fs"
+
+/** File name of the pinned-pack list inside the workspace memory dir. */
+export const PINNED_PACKS_FILE = "pinned-packs.json"
+
+/** Absolute path of the pinned-pack file for a given memory dir. */
+export const pinnedPacksFile = (memoryDir: string): string => path.join(memoryDir, PINNED_PACKS_FILE)
+
+/**
+ * Read the pinned pack ids from `<memoryDir>/pinned-packs.json`.
+ * Fault-tolerant: a missing file, unreadable file, invalid JSON, or a non-array payload all yield
+ * an empty list (no pins). Non-string entries inside a valid array are dropped.
+ */
+export const readPinnedPacks = (memoryDir: string): string[] => {
+  try {
+    const raw = readFileSync(pinnedPacksFile(memoryDir), "utf8")
+    const parsed: unknown = JSON.parse(raw)
+    return Array.isArray(parsed) ? parsed.filter((entry): entry is string => typeof entry === "string") : []
+  } catch {
+    return []
+  }
+}
+
+/**
+ * Write the pinned pack ids (deduplicated, sorted) to `<memoryDir>/pinned-packs.json`,
+ * creating the memory dir when absent.
+ */
+export const writePinnedPacks = (memoryDir: string, ids: readonly string[]): void => {
+  mkdirSync(memoryDir, { recursive: true })
+  writeFileSync(pinnedPacksFile(memoryDir), JSON.stringify([...new Set(ids)].sort(), null, 2), "utf8")
+}
diff --git a/packages/core/src/deepagent/plan-controller.ts b/packages/core/src/deepagent/plan-controller.ts
index e7f8cba8..4d1a2af9 100644
--- a/packages/core/src/deepagent/plan-controller.ts
+++ b/packages/core/src/deepagent/plan-controller.ts
@@ -138,7 +138,19 @@ export const isLightweightMode = (mode: AgentMode | string): boolean => mode ===
 // soft-blocked while the plan is stale; read/search/diagnosis tools always pass — otherwise a stale
 // plan could never be repaired (inspect first, then call `plan` to update, then continue). The
 // `plan` tool itself is never mutating, so it always passes the gate.
-const MUTATING_TOOLS = new Set(["edit", "write", "patch", "apply_patch", "multiedit"])
+const MUTATING_TOOLS = new Set([
+  "edit",
+  "write",
+  "patch",
+  "apply_patch",
+  "multiedit",
+  // FEAT-011 T5: the unified activity facade's MUTATING entry points — activity_start spawns a
+  // supervised background activity (task/goal/panel) and activity_control pause/resume/stop/steers
+  // one; both mutate execution state and must respect the stale-plan gate. activity_status /
+  // activity_result are read-only projections and stay unlisted.
+  "activity_start",
+  "activity_control",
+])
 const ALWAYS_ALLOWED_TOOLS = new Set(["read", "grep", "glob", "list", "ls", "search", "task", "webfetch"])
 
 export const isMutatingTool = (toolName: string, command?: string | null): boolean => {
diff --git a/packages/core/src/deepagent/profile-builder.ts b/packages/core/src/deepagent/profile-builder.ts
new file mode 100644
index 00000000..54ff532a
--- /dev/null
+++ b/packages/core/src/deepagent/profile-builder.ts
@@ -0,0 +1,168 @@
+// FEAT-002 (docs/34 §4.1/§5): the single authoritative ExtendedProblemProfile builder, lowered into
+// core so the agent gateway (core) constructs the SAME profile it hands to knowledge retrieval and
+// pack-snapshot recording — one activation authority per run. Previously this logic lived only in
+// deepagent-code (profile-detector.ts), which the gateway cannot import; deepagent-code now
+// re-exports from here. Pure logic + workspace-fact detection (package.json / README etc.); no
+// runtime imports outside node builtins.
+
+import { existsSync, readFileSync } from "node:fs"
+import path from "node:path"
+import type { ExtendedProblemProfile } from "./domain-pack-registry"
+
+export type WorkspaceSignals = {
+  readonly cwd: string
+  readonly agentMode: "general" | "high" | "xhigh" | "max" | "ultra"
+  readonly scenarioMode: "direct" | "intelligence"
+  readonly userRequest: string
+  readonly languages?: readonly string[]
+  readonly frameworks?: readonly string[]
+  readonly packageScripts?: Readonly<Record<string, string>>
+  // Optional round signals from prior diagnosis / validation
+  readonly roundSignals?: readonly string[]
+  // User-pinned packs (from settings / HTTP API override)
+  readonly userOverrides?: readonly string[]
+}
+
+const CODE_RISK_KEYWORDS = /security|auth|payment|billing|crypto|encrypt|secret|vuln|cve|pentest/i
+const FINANCE_KEYWORDS = /finance|payment|billing|ledger|accounting|invoice|transaction|audit/i
+const HEALTHCARE_KEYWORDS = /health|medical|patient|ehr|phi|hipaa|dicom|clinical/i
+const PRIVACY_KEYWORDS = /gdpr|pii|personal.?data|privacy|consent|anonymi/i
+const PHI_KEYWORDS = /phi|protected.health|patient.record/i
+const READ_ONLY_QUERY_KEYWORDS =
+  /\b(query|count|list|show|read|inspect|status|diff|log|config|select|explain|grep|rg|find)\b|查一下|查询|统计|列出|显示|读取|看一下|多少个|有哪些|当前状态|日志里|配置里|数据库里/i
+const MUTATION_KEYWORDS =
+  /\b(fix|implement|edit|modify|write|delete|deploy|migrate|migration|backfill|transaction|constraint|insert|update|alter|drop|restart|apply|remove)\b|修复|实现|修改|写入|删除|部署|迁移|更新|重启/i
+
+// Detect languages from the workspace (package.json / pyproject / go.mod / Cargo.toml etc.).
+const detectLanguages = (cwd: string): string[] => {
+  const langs: string[] = []
+  if (existsSync(path.join(cwd, "package.json"))) {
+    langs.push("javascript")
+    try {
+      const pkg = JSON.parse(readFileSync(path.join(cwd, "package.json"), "utf8"))
+      const deps = { ...pkg.dependencies, ...pkg.devDependencies }
+      if (deps["typescript"] || deps["@types/node"] || existsSync(path.join(cwd, "tsconfig.json"))) {
+        langs.push("typescript")
+      }
+    } catch {
+      langs.push("typescript")
+    } // assume TS on parse failure
+  }
+  if (existsSync(path.join(cwd, "pyproject.toml")) || existsSync(path.join(cwd, "setup.py"))) langs.push("python")
+  if (existsSync(path.join(cwd, "go.mod"))) langs.push("go")
+  if (existsSync(path.join(cwd, "Cargo.toml"))) langs.push("rust")
+  if (existsSync(path.join(cwd, "CMakeLists.txt"))) langs.push("cpp")
+  return [...new Set(langs)]
+}
+
+// Detect frameworks from package.json deps.
+const detectFrameworks = (cwd: string): string[] => {
+  const fw: string[] = []
+  const pkgFile = path.join(cwd, "package.json")
+  if (!existsSync(pkgFile)) return fw
+  try {
+    const pkg = JSON.parse(readFileSync(pkgFile, "utf8"))
+    const deps = { ...pkg.dependencies, ...pkg.devDependencies }
+    if (deps["react"] || deps["react-dom"]) fw.push("react")
+    if (deps["solid-js"]) fw.push("solidjs")
+    if (deps["vue"]) fw.push("vue")
+    if (deps["svelte"]) fw.push("svelte")
+    if (deps["next"]) fw.push("next.js")
+    if (deps["express"] || deps["fastify"] || deps["hono"] || deps["@hono/core"]) fw.push("backend-framework")
+    if (deps["drizzle-orm"] || deps["prisma"] || deps["typeorm"]) fw.push("orm")
+    if (deps["bun"]) fw.push("bun")
+    if (deps["effect"]) fw.push("effect")
+  } catch {
+    /* skip */
+  }
+  return [...new Set(fw)]
+}
+
+// Derive code_domains from languages, frameworks, and user request.
+const deriveCodeDomains = (langs: string[], frameworks: string[], request: string): string[] => {
+  const d: string[] = ["code"]
+  if (frameworks.some((f) => ["react", "solidjs", "vue", "svelte"].includes(f))) d.push("frontend")
+  if (frameworks.some((f) => f === "backend-framework")) d.push("backend")
+  if (langs.includes("cuda") || langs.includes("cpp") || /\b(kernel|gemm|cuda|gpu|sgemm|rocm)\b/i.test(request)) {
+    d.push("gpu_kernel")
+    if (!langs.includes("cpp")) langs.push("cpp")
+  }
+  if (langs.includes("python")) d.push("data")
+  if (READ_ONLY_QUERY_KEYWORDS.test(request) && !MUTATION_KEYWORDS.test(request)) {
+    d.push("query", "deterministic", "read_only")
+  }
+  return [...new Set(d)]
+}
+
+// Extract risk markers from the user request + repo signals.
+const extractRiskMarkers = (request: string, repoSignals: string[]): string[] => {
+  const m: string[] = []
+  const hay = `${request} ${repoSignals.join(" ")}`.toLowerCase()
+  if (CODE_RISK_KEYWORDS.test(hay)) m.push("security")
+  if (FINANCE_KEYWORDS.test(hay)) m.push("finance")
+  if (HEALTHCARE_KEYWORDS.test(hay)) m.push("healthcare")
+  if (PRIVACY_KEYWORDS.test(hay)) m.push("pii", "privacy")
+  if (PHI_KEYWORDS.test(hay)) m.push("phi")
+  return [...new Set(m)]
+}
+
+// Extract business_domains from request + risk markers.
+const deriveBusinessDomains = (request: string, riskMarkers: string[]): string[] => {
+  const d: string[] = []
+  if (FINANCE_KEYWORDS.test(request) || riskMarkers.includes("finance")) d.push("finance")
+  if (HEALTHCARE_KEYWORDS.test(request) || riskMarkers.includes("healthcare")) d.push("healthcare")
+  return d
+}
+
+// Infer a rough task_kind from the user request (heuristic; good enough for pack scoring).
+const inferTaskKind = (request: string): ExtendedProblemProfile["task_kind"] => {
+  const r = request.toLowerCase()
+  if (/\b(fix|bug|error|fail|broken|crash|traceback)\b/.test(r)) return "debug"
+  if (/\b(review|audit|check|inspect|scan)\b/.test(r)) return "review"
+  if (/\b(test|spec|coverage|unit|e2e|integration)\b/.test(r)) return "test"
+  if (/\b(migrat|upgrade|refactor|rename|move|convert)\b/.test(r)) return "migrate"
+  if (/\b(optim|improv|speed|perf|latency|memory|throughput)\b/.test(r)) return "optimize"
+  if (/\b(explain|document|describe|what|how|why)\b/.test(r)) return "explain"
+  if (/\b(deploy|release|ship|produc|operation)\b/.test(r)) return "operate"
+  return "implement"
+}
+
+// Collect signals from the repo (directory names, config files, README snippet).
+const collectRepoSignals = (cwd: string, userRequest: string): string[] => {
+  const signals: string[] = [userRequest.slice(0, 200)]
+  try {
+    const readmePath = ["README.md", "README.txt", "readme.md"].map((f) => path.join(cwd, f)).find(existsSync)
+    if (readmePath) signals.push(readFileSync(readmePath, "utf8").slice(0, 500))
+  } catch {
+    /* skip */
+  }
+  return signals
+}
+
+// Build a full ExtendedProblemProfile from workspace signals. This is the production entry point
+// called by the gateway/orchestrator before pack activation (docs/34 §5/§9 S5). FEAT-002: this is
+// the ONE profile producer the gateway uses for both retrieval and the recorded pack snapshot.
+export const buildProfile = (signals: WorkspaceSignals): ExtendedProblemProfile => {
+  const langs = signals.languages?.length ? [...signals.languages] : detectLanguages(signals.cwd)
+  const frameworks = signals.frameworks?.length ? [...signals.frameworks] : detectFrameworks(signals.cwd)
+  const repoSignals = collectRepoSignals(signals.cwd, signals.userRequest)
+  const codeDomains = deriveCodeDomains(langs, frameworks, signals.userRequest)
+  const riskMarkers = extractRiskMarkers(signals.userRequest, repoSignals)
+  const businessDomains = deriveBusinessDomains(signals.userRequest, riskMarkers)
+
+  return {
+    scenario_mode: signals.scenarioMode,
+    agent_strength: signals.agentMode,
+    task_kind: inferTaskKind(signals.userRequest),
+    code_domains: codeDomains,
+    business_domains: businessDomains,
+    platforms: [],
+    languages: langs,
+    frameworks,
+    data_classes: riskMarkers.filter((r) => ["pii", "phi"].includes(r)),
+    risk_markers: riskMarkers,
+    repo_signals: repoSignals.slice(0, 3),
+    round_signals: signals.roundSignals ?? [],
+    user_overrides: signals.userOverrides ?? [],
+  }
+}
diff --git a/packages/core/src/deepagent/session-state.ts b/packages/core/src/deepagent/session-state.ts
index 66f29717..9b13b640 100644
--- a/packages/core/src/deepagent/session-state.ts
+++ b/packages/core/src/deepagent/session-state.ts
@@ -112,6 +112,12 @@ export type SessionRunState = {
   // The last soft plan-gate warning claimed by a tool call. A stale latch can span many tool calls;
   // persisting its fingerprint prevents duplicate process-log warnings without touching history.
   lastPlanGateNudgeFingerprint: string | null
+  // FEAT-007: the locked active domain pack snapshot id of the LATEST gateway run for this session
+  // (`pack_snapshot:<hash>`, or the registry's empty/error sentinels). Recorded by the gateway at the
+  // run entry from the SAME activation knowledge retrieval constrains on (single authority, FEAT-002),
+  // and read by the session prompt loop to attribute each tool-request receipt's
+  // context_active_pack_set_snapshot_id. Null when no gateway run locked a snapshot for the session.
+  packSnapshotId: string | null
 }
 
 // V3.9 §D: session-state pointer to a running goal. The GoalLoop's GoalStatus (persisted in the
@@ -175,6 +181,7 @@ export const getOrCreate = (sessionId: string, mode: AgentMode): SessionRunState
     completedAt: null,
     lastAdmissionUserMessageId: undefined,
     lastPlanGateNudgeFingerprint: null,
+    packSnapshotId: null,
   }
   sessions.set(sessionId, state)
   saveToDisk()
@@ -679,6 +686,8 @@ function normalizeState(state: SessionRunState): SessionRunState {
     panelRounds: state.panelRounds ?? null,
     activeGoal: state.activeGoal ?? null,
     lastPlanGateNudgeFingerprint: state.lastPlanGateNudgeFingerprint ?? null,
+    // Backfill: sessions persisted before FEAT-007 have no pack snapshot attribution → null.
+    packSnapshotId: state.packSnapshotId ?? null,
   }
   // PR-4 migration cleanup: the legacy `suppressedFingerprints: string[]` field is carried through by
   // the `...state` spread above. Once its contents are migrated into `suppressedValidations`, drop the
diff --git a/packages/core/src/event.ts b/packages/core/src/event.ts
index c9e15da2..3bb80b07 100644
--- a/packages/core/src/event.ts
+++ b/packages/core/src/event.ts
@@ -128,6 +128,44 @@ export type SerializedSnapshotChunk = {
   readonly chunkHash: string
 }
 
+// RISK-003 ⑤ (BUG-407-010 §9.2/§11.4): the portable, importable aggregate snapshot body.
+// The row/chunk transfer protocol (snapshotRows/snapshotChunks → stage* → importSnapshot) is the
+// durable DB-to-DB path used by warp/sync; this bundle serializes the same authority into one
+// JSON body (chunk data base64) that can be persisted as evidence and atomically imported into an
+// empty copy. `bundleHash` covers the snapshot header, the row manifest, and every chunk body.
+export const SNAPSHOT_BUNDLE_FORMAT = "aggregate-snapshot-bundle.v1"
+
+export const SnapshotBundle = Schema.Struct({
+  format: Schema.Literal(SNAPSHOT_BUNDLE_FORMAT),
+  snapshot: Schema.Struct({
+    snapshotID: Schema.String,
+    aggregateID: Schema.String,
+    throughSeq: NonNegativeInt,
+    syncSeq: NonNegativeInt,
+    codec: Schema.String,
+    schemaVersion: NonNegativeInt,
+    snapshotHash: Schema.String,
+    body: Schema.Record(Schema.String, Schema.Unknown),
+    ownerID: Schema.optional(Schema.String),
+    createdAt: NonNegativeInt,
+  }),
+  rows: Schema.Array(
+    Schema.Struct({
+      snapshotID: Schema.String,
+      rowIndex: NonNegativeInt,
+      tableName: Schema.String,
+      rowKey: Schema.String,
+      rowHash: Schema.String,
+      rowBytes: NonNegativeInt,
+      chunkCount: NonNegativeInt,
+      chainHash: Schema.String,
+    }),
+  ),
+  chunks: Schema.Record(Schema.String, Schema.Array(Schema.String)),
+  bundleHash: Schema.String,
+})
+export type SnapshotBundle = typeof SnapshotBundle.Type
+
 export type SnapshotProjectionRow = {
   readonly cursor: string
   readonly tableName: string
@@ -432,6 +470,8 @@ export interface Interface {
     row: SerializedSnapshotRow,
     chunks: readonly SerializedSnapshotChunk[],
   ) => Effect.Effect<void>
+  readonly exportSnapshotBundle?: (input: { readonly snapshotID: string }) => Effect.Effect<string>
+  readonly importSnapshotBundle?: (bundle: string) => Effect.Effect<SerializedSnapshot>
   readonly compact: (input: {
     readonly aggregateID: string
     readonly throughSeq: Cursor
@@ -1862,6 +1902,135 @@ export const layerWith = (layerOptions?: LayerOptions) =>
         }), { behavior: "immediate" }).pipe(Effect.orDie)
       }
 
+      function exportSnapshotBundle(input: { readonly snapshotID: string }) {
+        return Effect.gen(function* () {
+          const header = yield* db
+            .select({
+              snapshotID: EventSnapshotTable.snapshot_id,
+              aggregateID: EventSnapshotTable.aggregate_id,
+              throughSeq: EventSnapshotTable.through_seq,
+              syncSeq: EventSnapshotTable.sync_seq,
+              codec: EventSnapshotTable.codec,
+              schemaVersion: EventSnapshotTable.schema_version,
+              snapshotHash: EventSnapshotTable.snapshot_hash,
+              body: EventSnapshotTable.body,
+              ownerID: EventSnapshotTable.owner_id,
+              createdAt: EventSnapshotTable.created_at,
+            })
+            .from(EventSnapshotTable)
+            .where(eq(EventSnapshotTable.snapshot_id, input.snapshotID))
+            .get()
+            .pipe(Effect.orDie)
+          if (!header)
+            return yield* Effect.die(
+              new InvalidSyncEventError({ type: "snapshot", message: `Snapshot ${input.snapshotID} not found` }),
+            )
+          const snapshot: SerializedSnapshot = {
+            snapshotID: header.snapshotID,
+            aggregateID: header.aggregateID,
+            throughSeq: header.throughSeq,
+            syncSeq: header.syncSeq,
+            codec: header.codec,
+            schemaVersion: header.schemaVersion,
+            snapshotHash: header.snapshotHash,
+            body: header.body,
+            ...(header.ownerID ? { ownerID: header.ownerID } : {}),
+            createdAt: header.createdAt,
+          }
+          const rows: SerializedSnapshotRow[] = []
+          let after = -1
+          while (true) {
+            const page = yield* snapshotRows({ snapshotID: input.snapshotID, after })
+            rows.push(...page)
+            if (page.length === 0) break
+            after = page[page.length - 1]!.rowIndex
+          }
+          const chunks: Record<string, string[]> = {}
+          for (const row of rows) {
+            const encoded: string[] = []
+            let chunkAfter = -1
+            while (true) {
+              const page = yield* snapshotChunks({ rowHash: row.rowHash, after: chunkAfter })
+              if (page.length === 0) break
+              for (const chunk of page) encoded.push(chunk.data.toString("base64"))
+              chunkAfter = page[page.length - 1]!.chunkIndex
+            }
+            chunks[row.rowHash] = encoded
+          }
+          const bundle = { format: SNAPSHOT_BUNDLE_FORMAT, snapshot, rows, chunks }
+          const text = JSON.stringify({ ...bundle, bundleHash: hashJson(bundle) })
+          if (Buffer.byteLength(text) > SNAPSHOT_MAX_TOTAL_BYTES)
+            return yield* Effect.die(
+              new InvalidSyncEventError({
+                type: "snapshot",
+                message: `Snapshot ${input.snapshotID} bundle exceeds the transfer budget`,
+              }),
+            )
+          return text
+        })
+      }
+
+      function importSnapshotBundle(bundle: string) {
+        return Effect.gen(function* () {
+          if (Buffer.byteLength(bundle) > SNAPSHOT_MAX_TOTAL_BYTES)
+            return yield* Effect.die(
+              new InvalidSyncEventError({ type: "snapshot", message: "Snapshot bundle exceeds the transfer budget" }),
+            )
+          const decoded = Schema.decodeUnknownOption(Schema.UnknownFromJsonString)(bundle)
+          const parsed = decoded._tag === "Some" ? decoded.value : undefined
+          const candidate = Schema.decodeUnknownOption(SnapshotBundle)(parsed)
+          if (candidate._tag !== "Some")
+            return yield* Effect.die(
+              new InvalidSyncEventError({
+                type: "snapshot",
+                message: `Snapshot bundle is not a valid ${SNAPSHOT_BUNDLE_FORMAT} body`,
+              }),
+            )
+          const value = candidate.value
+          const { bundleHash, ...rest } = value
+          if (hashJson(rest) !== bundleHash)
+            return yield* Effect.die(
+              new InvalidSyncEventError({ type: "snapshot", message: "Snapshot bundle hash mismatch" }),
+            )
+          const snapshot: SerializedSnapshot = {
+            snapshotID: value.snapshot.snapshotID,
+            aggregateID: value.snapshot.aggregateID,
+            throughSeq: value.snapshot.throughSeq,
+            syncSeq: value.snapshot.syncSeq,
+            codec: value.snapshot.codec,
+            schemaVersion: value.snapshot.schemaVersion,
+            snapshotHash: value.snapshot.snapshotHash,
+            body: value.snapshot.body as Record<string, unknown>,
+            ...(value.snapshot.ownerID ? { ownerID: value.snapshot.ownerID } : {}),
+            createdAt: value.snapshot.createdAt,
+          }
+          // Stage bounded transfer pages (rows, then per-row chunks) before the authoritative
+          // import — the exact protocol the wire transfer uses, so staging CAS guards apply.
+          for (let index = 0; index < value.rows.length; index += SNAPSHOT_TRANSFER_ROWS) {
+            yield* stageSnapshotRows(snapshot, value.rows.slice(index, index + SNAPSHOT_TRANSFER_ROWS))
+          }
+          for (const row of value.rows) {
+            const encoded = value.chunks[row.rowHash]
+            if (!encoded || encoded.length !== row.chunkCount)
+              return yield* Effect.die(
+                new InvalidSyncEventError({
+                  type: "snapshot",
+                  message: `Snapshot bundle row ${row.rowIndex} chunks are missing`,
+                }),
+              )
+            const chunks = encoded.map((data, chunkIndex) => {
+              const buffer = Buffer.from(data, "base64")
+              return { rowHash: row.rowHash, chunkIndex, data: buffer, chunkHash: Hash.sha256(buffer) }
+            })
+            for (let index = 0; index < chunks.length; index += SNAPSHOT_TRANSFER_CHUNKS) {
+              yield* stageSnapshotChunks(snapshot, row, chunks.slice(index, index + SNAPSHOT_TRANSFER_CHUNKS))
+            }
+          }
+          yield* importSnapshot(snapshot)
+          return snapshot
+        })
+      }
+
       function compact(input: {
         readonly aggregateID: string
         readonly throughSeq: Cursor
@@ -2629,6 +2798,8 @@ export const layerWith = (layerOptions?: LayerOptions) =>
         snapshotChunks,
         stageSnapshotRows,
         stageSnapshotChunks,
+        exportSnapshotBundle,
+        importSnapshotBundle,
         backfillSyncIndex,
         remove,
         claim,
diff --git a/packages/core/src/permission/mutating.ts b/packages/core/src/permission/mutating.ts
new file mode 100644
index 00000000..4b20887d
--- /dev/null
+++ b/packages/core/src/permission/mutating.ts
@@ -0,0 +1,15 @@
+// Shared mutating-permission set used by every read-only approval mode.
+//
+// Tools that write, execute, or otherwise mutate state — denied in read-only
+// mode. Everything else (read/glob/grep/list/lsp/webfetch/websearch/
+// todowrite/…) is left to the normal permission flow so the agent can still
+// inspect the workspace.
+//
+// Consumers: the GUI directory read-only mode (packages/app) and the CLI
+// `run --permission-mode read-only` auto-responder (packages/deepagent-code)
+// must agree on this set, so it lives in core.
+export const MUTATING_PERMISSIONS = new Set(["edit", "write", "patch", "bash", "task", "external_directory"])
+
+export function isMutatingPermission(permission: string) {
+  return MUTATING_PERMISSIONS.has(permission)
+}
diff --git a/packages/core/src/session/compaction.ts b/packages/core/src/session/compaction.ts
index 99765f73..bc6b458f 100644
--- a/packages/core/src/session/compaction.ts
+++ b/packages/core/src/session/compaction.ts
@@ -11,7 +11,10 @@ import { Token } from "../util/token"
 
 const DEFAULT_BUFFER = 20_000
 const DEFAULT_KEEP_TOKENS = 8_000
-const TOOL_OUTPUT_MAX_CHARS = 2_000
+// UPD-005: single source of truth for the compaction-side tool-output truncation budget.
+// deepagent-code/src/session/compaction.ts imports this constant (it used to keep a duplicate
+// 2_000 copy); keep the two call sites in sync by editing ONLY this definition.
+export const TOOL_OUTPUT_MAX_CHARS = 2_000
 const SUMMARY_OUTPUT_TOKENS = 4_096
 const SUMMARY_TEMPLATE = `Output exactly the Markdown structure shown inside <template> and keep the section order unchanged. Do not include the <template> tags in your response.
 <template>
diff --git a/packages/core/src/session/sql.ts b/packages/core/src/session/sql.ts
index 8a3bb575..b4b7aecd 100644
--- a/packages/core/src/session/sql.ts
+++ b/packages/core/src/session/sql.ts
@@ -292,7 +292,18 @@ export const SessionIntentTable = sqliteTable(
       .notNull()
       .references(() => SessionTable.id, { onDelete: "cascade" }),
     source: text().$type<"composer" | "intelligence" | "followup" | "rewrite">().notNull(),
-    state: text().$type<"preparing" | "admitting" | "admitted" | "canceled" | "superseded" | "failed">().notNull(),
+    state: text()
+      .$type<
+        | "preparing"
+        | "awaiting_confirmation"
+        | "selected"
+        | "admitting"
+        | "admitted"
+        | "canceled"
+        | "superseded"
+        | "failed"
+      >()
+      .notNull(),
     selected_variant: text().$type<"original" | "rewritten">(),
     selected_payload_hash: text(),
     delivery: text().$type<"turn" | SessionInput.Delivery>(),
diff --git a/packages/core/src/tool/bash.ts b/packages/core/src/tool/bash.ts
index f209b1ad..a01e400f 100644
--- a/packages/core/src/tool/bash.ts
+++ b/packages/core/src/tool/bash.ts
@@ -10,8 +10,6 @@ import { LocationMutation } from "../location-mutation"
 import { AppProcess } from "../process"
 import { PermissionV2 } from "../permission"
 import { Policy } from "../policy"
-import { makeLocationNode } from "../effect/app-node"
-import { ToolRegistry } from "./registry"
 import { ServerCapabilities } from "../server-capabilities"
 import { PositiveInt } from "../schema"
 import { Tool } from "./tool"
@@ -276,9 +274,3 @@ export const layer = Layer.effectDiscard(
       .pipe(Effect.orDie)
   }),
 )
-
-export const node = makeLocationNode({
-  name: "tool/bash",
-  layer,
-  deps: [ToolRegistry.node, LocationMutation.node, FSUtil.node, AppProcess.node, Config.node, PermissionV2.node, Policy.node],
-})
diff --git a/packages/core/test/agent-gateway.test.ts b/packages/core/test/agent-gateway.test.ts
index 603dc6fe..eb9af3f6 100644
--- a/packages/core/test/agent-gateway.test.ts
+++ b/packages/core/test/agent-gateway.test.ts
@@ -6,6 +6,7 @@ import { tmpdir } from "node:os"
 import { Effect, Stream } from "effect"
 import { LLM, LLMEvent, Model } from "@deepagent-code/llm"
 import { AgentGateway } from "../src/agent-gateway"
+import { writePinnedPacks } from "../src/deepagent/pinned-packs"
 import { DeepAgentDurableLearning } from "../src/deepagent/durable-learning"
 import * as OpenAIChat from "@deepagent-code/llm/protocols/openai-chat"
 import { releasedUserGlobalSelection } from "./deepagent/released-selection-fixture"
@@ -60,6 +61,10 @@ describe("AgentGateway", () => {
       expect(Array.from(events).map((event) => event.type)).toEqual(["text-delta", "finish"])
       expect(await readdir(dir)).toHaveLength(1)
       expect(AgentGateway.systemPrompt("openai").join("\n").length).toBeGreaterThan(0)
+      // FEAT-007: the run entry locks the active pack snapshot id onto the session state so the
+      // session prompt loop can attribute each tool-request receipt (no registry configured here →
+      // the deterministic `pack_snapshot:empty` sentinel, still a valid `pack_snapshot:%` value).
+      expect(AgentGateway.DeepAgentSessionState.get("ses_test")?.packSnapshotId).toMatch(/^pack_snapshot:/)
     } finally {
       AgentGateway.configure({ enabled: false, runsDir: undefined })
       await rm(dir, { recursive: true, force: true })
@@ -1094,3 +1099,134 @@ describe("AgentGateway", () => {
     }
   })
 })
+
+// FEAT-001: GUI-pinned domain packs must actually shape gateway behavior — the pinned pack set read
+// from <baseDir>/memory/pinned-packs.json must appear in the run's active_pack_set and the pinned
+// pack's refs must be force-selected by knowledge retrieval.
+describe("AgentGateway pinned domain packs (FEAT-001)", () => {
+  const genericFeature = "rename a local helper function in the user service module"
+
+  const runMaxTurn = async (root: string) => {
+    const runsDir = path.join(root, "runs")
+    await mkdir(runsDir, { recursive: true })
+    AgentGateway.configure({
+      enabled: true,
+      agentMode: "max",
+      baseDir: root,
+      runsDir,
+      allowProviderExecutedTools: false,
+    })
+    // workspaceID stays non-absolute (user-global retrieval) so the fixture's global released
+    // selection matches the query project; pin wiring is independent of workspace scoping.
+    await Effect.runPromise(
+      AgentGateway.manageStream(
+        {
+          ...deepagentRunInput,
+          feature: genericFeature,
+          releasedKnowledgeSelection: releasedUserGlobalSelection(root),
+        },
+        Stream.make(LLMEvent.textDelta({ id: "text-0", text: "done" }), LLMEvent.finish({ reason: "stop" })),
+      ).pipe(Stream.runCollect),
+    )
+    const runDir = await readOnlyRunDir(runsDir)
+    return readJson(runDir, "MODEL_WORK_PACKAGE.json")
+  }
+
+  test("a pinned pack appears in active_pack_set and its refs are force-selected", async () => {
+    const root = await mkdtemp(path.join(tmpdir(), "deepagent-pin-"))
+    try {
+      writePinnedPacks(path.join(root, "memory"), ["code.gpu-kernel"])
+      const workPackage = await runMaxTurn(root)
+      expect(workPackage.active_pack_set).toContain("code.gpu-kernel")
+      const selectedRefs: string[] = workPackage.knowledge_retrieval.selected_refs
+      expect(selectedRefs.some((ref) => ref.includes("gpu"))).toBe(true)
+    } finally {
+      AgentGateway.configure({ enabled: false, runsDir: undefined })
+      await rm(root, { recursive: true, force: true })
+    }
+  })
+
+  test("without pins the pack stays inactive (unpinned behavior unchanged)", async () => {
+    const root = await mkdtemp(path.join(tmpdir(), "deepagent-nopin-"))
+    try {
+      const workPackage = await runMaxTurn(root)
+      expect(workPackage.active_pack_set).not.toContain("code.gpu-kernel")
+      const selectedRefs: string[] = workPackage.knowledge_retrieval.selected_refs
+      expect(selectedRefs.some((ref) => ref.includes("gpu"))).toBe(false)
+    } finally {
+      AgentGateway.configure({ enabled: false, runsDir: undefined })
+      await rm(root, { recursive: true, force: true })
+    }
+  })
+
+  test("a corrupt pinned-packs.json degrades to no pins and still completes the run", async () => {
+    const root = await mkdtemp(path.join(tmpdir(), "deepagent-corrupt-pin-"))
+    try {
+      await mkdir(path.join(root, "memory"), { recursive: true })
+      await writeFile(path.join(root, "memory", "pinned-packs.json"), "{not json")
+      const workPackage = await runMaxTurn(root)
+      expect(workPackage.active_pack_set).not.toContain("code.gpu-kernel")
+    } finally {
+      AgentGateway.configure({ enabled: false, runsDir: undefined })
+      await rm(root, { recursive: true, force: true })
+    }
+  })
+})
+
+// FEAT-002: ONE pack-activation authority per run. The gateway builds the run profile once at run
+// entry (profile-builder) and both knowledge retrieval (RetrievalInput.profileOverride) and the
+// recorded active_pack_set consume it — so the deterministic read-only policy flip (which consumes
+// active_pack_set via activePackIds.includes("code.query")) is regression-locked end to end.
+describe("AgentGateway unified pack activation authority (FEAT-002)", () => {
+  const runMaxTurn = async (root: string, feature: string) => {
+    const runsDir = path.join(root, "runs")
+    const workspace = path.join(root, "workspace")
+    await mkdir(runsDir, { recursive: true })
+    await mkdir(workspace, { recursive: true })
+    AgentGateway.configure({
+      enabled: true,
+      agentMode: "max",
+      baseDir: root,
+      runsDir,
+      allowProviderExecutedTools: false,
+    })
+    // Absolute workspaceID => the run profile detects workspace facts from an empty dir (no
+    // README/package.json noise), keeping the activation verdict deterministic in this test.
+    await Effect.runPromise(
+      AgentGateway.manageStream(
+        { ...deepagentRunInput, feature, workspaceID: workspace },
+        Stream.make(LLMEvent.textDelta({ id: "text-0", text: "done" }), LLMEvent.finish({ reason: "stop" })),
+      ).pipe(Stream.runCollect),
+    )
+    const runDir = await readOnlyRunDir(runsDir)
+    return readJson(runDir, "MODEL_WORK_PACKAGE.json")
+  }
+
+  test("a deterministic query run records code.query in active_pack_set and flips read-only", async () => {
+    const root = await mkdtemp(path.join(tmpdir(), "deepagent-feat002-query-"))
+    try {
+      const workPackage = await runMaxTurn(root, "请查一下数据库里有多少条用户记录")
+      expect(workPackage.active_pack_set).toContain("code.query")
+      // Same source: the recorded set is the retrieval-constrained activation (includes fallbacks).
+      expect(workPackage.active_pack_set).toContain("code.core")
+      expect(workPackage.deterministic_result.enabled).toBe(true)
+      expect(workPackage.deterministic_result.read_only).toBe(true)
+    } finally {
+      AgentGateway.configure({ enabled: false, runsDir: undefined })
+      await rm(root, { recursive: true, force: true })
+    }
+  })
+
+  test("a mutation run keeps code.query out of active_pack_set and tools writable", async () => {
+    const root = await mkdtemp(path.join(tmpdir(), "deepagent-feat002-mutation-"))
+    try {
+      const workPackage = await runMaxTurn(root, "请修复登录逻辑并更新依赖")
+      expect(workPackage.active_pack_set).not.toContain("code.query")
+      expect(workPackage.deterministic_result.enabled).toBe(false)
+      expect(workPackage.deterministic_result.read_only).toBe(false)
+    } finally {
+      AgentGateway.configure({ enabled: false, runsDir: undefined })
+      await rm(root, { recursive: true, force: true })
+    }
+  })
+})
diff --git a/packages/core/test/compaction-continuation-fail-closed-migration.test.ts b/packages/core/test/compaction-continuation-fail-closed-migration.test.ts
new file mode 100644
index 00000000..1086f722
--- /dev/null
+++ b/packages/core/test/compaction-continuation-fail-closed-migration.test.ts
@@ -0,0 +1,86 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { Effect } from "effect"
+import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
+
+const migrationID = "20260820130000_compaction_continuation_fail_closed"
+const makeDb = EffectDrizzleSqlite.makeWithDefaults()
+
+const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
+  Effect.runPromise(effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped))
+
+// Seed a committed run whose continuation never reached admission (the BUG-407-009 incident
+// shape): continuation_state pending with no receipt binding.
+const seedPendingContinuation = (runID: string, sessionID: string) => `
+  INSERT INTO compaction_run (
+    run_id, session_id, from_prompt_epoch, target_prompt_epoch, trigger, state,
+    completion_reason, summary_text, recent_context, committed_at, committed_summary_message_id,
+    checkpoint_ref, checkpoint_hash, continuation_state, created_at,
+    source_window_id, source_effective_history_hash, source_message_count, source_projection_version
+  ) VALUES (
+    '${runID}', '${sessionID}', 0, 0, 'manual', 'committed',
+    'manual', 'summary', 'context', 1, 'msg-seed', 'checkpoint', 'hash', 'pending', 1,
+    'window', 'history-hash', 1, 1
+  )
+`
+
+describe("compaction continuation fail-closed migration", () => {
+  test("allows pending → failed without admission bindings and keeps the rest of the machine intact", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-fc', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES ('session-fc', 'project-fc', 'fc', '/repo', 'Fail closed', '1', 0, 1, 1)
+        `)
+        yield* db.run(seedPendingContinuation("run-fc", "session-fc"))
+
+        // The fail-closed transition: pending → failed, no receipt id / admitted_at / terminal_at.
+        yield* db.run(`UPDATE compaction_run SET continuation_state = 'failed' WHERE run_id = 'run-fc'`)
+        const row = yield* db.get<{ continuation_state: string }>(
+          `SELECT continuation_state FROM compaction_run WHERE run_id = 'run-fc'`,
+        )
+        expect(row?.continuation_state).toBe("failed")
+
+        // The rest of the machine is unchanged: pending → settled stays illegal (skip admission).
+        yield* db.run(seedPendingContinuation("run-fc2", "session-fc"))
+        const illegal = yield* db
+          .run(`UPDATE compaction_run SET continuation_state = 'settled' WHERE run_id = 'run-fc2'`)
+          .pipe(Effect.exit)
+        expect(illegal._tag).toBe("Failure")
+
+        // failed → pending stays illegal (no resurrection).
+        const resurrect = yield* db
+          .run(`UPDATE compaction_run SET continuation_state = 'pending' WHERE run_id = 'run-fc'`)
+          .pipe(Effect.exit)
+        expect(resurrect._tag).toBe("Failure")
+      }),
+    )
+  })
+
+  test("migration registers after the stage-evidence batch and applies idempotently", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+        const tracked = yield* db.get<{ id: string }>(`SELECT id FROM migration WHERE id = '${migrationID}'`)
+        expect(tracked?.id).toBe(migrationID)
+        yield* DatabaseMigration.apply(db)
+        expect(
+          yield* db.get<{ count: number }>(`SELECT COUNT(*) AS count FROM migration WHERE id = '${migrationID}'`),
+        ).toEqual({ count: 1 })
+      }),
+    )
+  })
+})
diff --git a/packages/core/test/database-capability.test.ts b/packages/core/test/database-capability.test.ts
index 3114de6e..40158f75 100644
--- a/packages/core/test/database-capability.test.ts
+++ b/packages/core/test/database-capability.test.ts
@@ -39,7 +39,7 @@ describe("database capability", () => {
           Effect.gen(function* () {
             const { db } = yield* Database.Service
             yield* db.run(sql`DROP TRIGGER database_capability_immutable_update`)
-            yield* db.run(sql`UPDATE database_capability SET minimum_reader_protocol = 3, minimum_writer_protocol = 3
+            yield* db.run(sql`UPDATE database_capability SET minimum_reader_protocol = 4, minimum_writer_protocol = 4
               WHERE capability = 'bounded_event_snapshot_v1'`)
           }).pipe(Effect.provide(Database.layerFromPath(filename))),
         ),
@@ -52,4 +52,29 @@ describe("database capability", () => {
       await fs.rm(directory, { recursive: true, force: true })
     }
   })
+
+  test("opens a database marked with the successor fence at protocol 3", async () => {
+    const directory = await fs.mkdtemp(path.join(os.tmpdir(), "deepagent-code-db-capability-"))
+    const filename = path.join(directory, "database.db")
+    try {
+      await Effect.runPromise(
+        Effect.scoped(
+          Effect.gen(function* () {
+            const { db } = yield* Database.Service
+            yield* db.run(sql`
+              INSERT INTO database_capability(
+                capability, minimum_reader_protocol, minimum_writer_protocol, installed_at
+              ) VALUES ('provider_owner_successor_v1', 3, 3, 0)
+            `)
+          }).pipe(Effect.provide(Database.layerFromPath(filename))),
+        ),
+      )
+      const exit = await Effect.runPromise(
+        Effect.scoped(Database.Service.pipe(Effect.provide(Database.layerFromPath(filename)))).pipe(Effect.exit),
+      )
+      expect(exit._tag).toBe("Success")
+    } finally {
+      await fs.rm(directory, { recursive: true, force: true })
+    }
+  })
 })
diff --git a/packages/core/test/deepagent-event-bus.test.ts b/packages/core/test/deepagent-event-bus.test.ts
index c9a84210..dea3adeb 100644
--- a/packages/core/test/deepagent-event-bus.test.ts
+++ b/packages/core/test/deepagent-event-bus.test.ts
@@ -1,10 +1,15 @@
-import { describe, expect } from "bun:test"
-import { Effect, Fiber, Layer, Stream } from "effect"
+import { describe, expect, test } from "bun:test"
+import { Context, Effect, Fiber, Layer, Stream } from "effect"
 import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
 import { DeepAgentEvent } from "@deepagent-code/core/deepagent/deepagent-event"
-import { DeepAgentEventTable, DeepAgentEventDropTable } from "@deepagent-code/core/deepagent/deepagent-event-sql"
+import {
+  DeepAgentEventTable,
+  DeepAgentEventDropTable,
+  DeepAgentEventDeliveryTable,
+  DeepAgentConsumerGroupTable,
+} from "@deepagent-code/core/deepagent/deepagent-event-sql"
 import { Database } from "@deepagent-code/core/database/database"
-import { eq } from "drizzle-orm"
+import { and, asc, eq } from "drizzle-orm"
 import { testEffect } from "./lib/effect"
 
 // A deterministic mutable clock so retry-backoff / dedupe-window assertions are exact.
@@ -523,4 +528,244 @@ describe("DeepAgentEventBus publish latency (§F1)", () => {
       expect(row?.ms).toBe(0)
     }),
   )
+
+  it.effect("RISK-001: two claimants cannot claim the same due delivery", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(20_000)
+      const event = yield* bus.publish(input({ idempotencyKey: "claim-1" }))
+      yield* bus.nack({ subscriptionGroup: "router", eventID: event.id, reason: "boom" })
+      // due at 21_000 (backoff base 1000)
+      const first = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "a", now: 21_000 })
+      const second = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "b", now: 21_000 })
+      expect(first.deliveries.map((d) => d.eventID)).toEqual([event.id])
+      expect(second.deliveries).toEqual([])
+    }),
+  )
+
+  it.effect("RISK-001: an expired lease becomes re-claimable, stale ack is a no-op", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(30_000)
+      const event = yield* bus.publish(input({ idempotencyKey: "claim-2" }))
+      yield* bus.nack({ subscriptionGroup: "router", eventID: event.id, reason: "boom" })
+      const stale = yield* bus.claimDue({
+        subscriptionGroup: "router",
+        claimantId: "slow-worker",
+        now: 31_000,
+        leaseMs: 5_000,
+      })
+      expect(stale.deliveries).toHaveLength(1)
+      // lease expired at 36_000 → a fresh claimant wins the row.
+      const fresh = yield* bus.claimDue({
+        subscriptionGroup: "router",
+        claimantId: "fresh-worker",
+        now: 36_001,
+        leaseMs: 5_000,
+      })
+      expect(fresh.deliveries.map((d) => d.eventID)).toEqual([event.id])
+      // the stale token can no longer settle the delivery…
+      const staleAck = yield* bus.ackClaim({
+        subscriptionGroup: "router",
+        eventID: event.id,
+        claimToken: stale.claimToken,
+      })
+      expect(staleAck).toBe(false)
+      // …but the fresh token can.
+      const freshAck = yield* bus.ackClaim({
+        subscriptionGroup: "router",
+        eventID: event.id,
+        claimToken: fresh.claimToken,
+      })
+      expect(freshAck).toBe(true)
+      const due = yield* bus.dueRetries(99_999)
+      expect(due.filter((d) => d.eventID === event.id)).toEqual([])
+    }),
+  )
+
+  it.effect("RISK-001: nackClaim releases the claim and schedules backoff", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(40_000)
+      const event = yield* bus.publish(input({ idempotencyKey: "claim-3" }))
+      yield* bus.nack({ subscriptionGroup: "router", eventID: event.id, reason: "boom" })
+      const claim = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "w", now: 41_000 })
+      const applied = yield* bus.nackClaim({
+        subscriptionGroup: "router",
+        eventID: event.id,
+        claimToken: claim.claimToken,
+        reason: "still failing",
+      })
+      expect(applied).toBe(true)
+      // claim released → immediately re-claimable once the new backoff (attempt 2 → +2000) elapses.
+      const early = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "w2", now: 41_001 })
+      expect(early.deliveries).toEqual([])
+      const later = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "w2", now: 43_000 })
+      expect(later.deliveries.map((d) => d.eventID)).toEqual([event.id])
+      expect(later.deliveries[0]?.attempts).toBe(2)
+    }),
+  )
+
+  it.effect("RISK-001: null-lease legacy rows remain claimable", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(50_000)
+      const event = yield* bus.publish(input({ idempotencyKey: "claim-4" }))
+      // plain nack creates a pending row without claim columns (legacy shape)
+      yield* bus.nack({ subscriptionGroup: "router", eventID: event.id, reason: "boom" })
+      const claim = yield* bus.claimDue({ subscriptionGroup: "router", claimantId: "w", now: 51_000 })
+      expect(claim.deliveries.map((d) => d.eventID)).toEqual([event.id])
+    }),
+  )
+})
+
+describe("DeepAgentEventBus RISK-006 (multi-process extensions)", () => {
+  it.effect("consumer groups from different workspaces coexist (workspace_id persisted, default '')", () =>
+    Effect.gen(function* () {
+      const { db } = yield* Database.Service
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(1_000)
+      yield* bus.registerConsumerGroup("grp-a", undefined, "wrk_a")
+      yield* bus.registerConsumerGroup("grp-b", "ci.failure", "wrk_b")
+      yield* bus.registerConsumerGroup("grp-legacy") // no workspaceID → "" (back-compat)
+      const rows = yield* db
+        .select()
+        .from(DeepAgentConsumerGroupTable)
+        .orderBy(asc(DeepAgentConsumerGroupTable.group_id))
+        .all()
+        .pipe(Effect.orDie)
+      expect(rows.map((r) => [r.group_id, r.workspace_id])).toEqual([
+        ["grp-a", "wrk_a"],
+        ["grp-b", "wrk_b"],
+        ["grp-legacy", ""],
+      ])
+      // RISK-006 residual — delivery routing is workspace-scoped: a wrk_a event is owed to the
+      // wrk_a group and the global ("") group, but NOT to the wrk_b group.
+      yield* bus.publish(input({ idempotencyKey: "ws-1", workspaceID: "wrk_a" }))
+      const due = yield* bus.dueRetries(2_000)
+      expect(due.map((d) => d.subscriptionGroup).sort()).toEqual(["grp-a", "grp-legacy"])
+      // unregister stays keyed by group_id only (compat)
+      yield* bus.unregisterConsumerGroup("grp-a")
+      const remaining = yield* db
+        .select({ group_id: DeepAgentConsumerGroupTable.group_id })
+        .from(DeepAgentConsumerGroupTable)
+        .orderBy(asc(DeepAgentConsumerGroupTable.group_id))
+        .all()
+        .pipe(Effect.orDie)
+      expect(remaining.map((r) => r.group_id)).toEqual(["grp-b", "grp-legacy"])
+      // re-registering upserts workspace_id (idempotent)
+      yield* bus.registerConsumerGroup("grp-b", "ci.failure", "wrk_c")
+      const moved = yield* db
+        .select({ workspace_id: DeepAgentConsumerGroupTable.workspace_id })
+        .from(DeepAgentConsumerGroupTable)
+        .where(eq(DeepAgentConsumerGroupTable.group_id, "grp-b"))
+        .get()
+        .pipe(Effect.orDie)
+      expect(moved?.workspace_id).toBe("wrk_c")
+    }),
+  )
+
+  it.effect("high/critical deliveries are returned by dueRetries/claimDue before normal/low", () =>
+    Effect.gen(function* () {
+      const { db } = yield* Database.Service
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(100_000)
+      yield* bus.registerConsumerGroup("prio-grp", undefined, "wrk_p")
+      const low = yield* bus.publish(input({ idempotencyKey: "p-low", priority: "low", workspaceID: "wrk_p" }))
+      setNow(100_001)
+      const normal = yield* bus.publish(input({ idempotencyKey: "p-normal", priority: "normal", workspaceID: "wrk_p" }))
+      setNow(100_002)
+      const high = yield* bus.publish(input({ idempotencyKey: "p-high", priority: "high", workspaceID: "wrk_p" }))
+      setNow(100_003)
+      const critical = yield* bus.publish(input({ idempotencyKey: "p-crit", priority: "critical", workspaceID: "wrk_p" }))
+      // the event's priority is denormalized onto the delivery row at publish time.
+      const hiRow = yield* db
+        .select({ priority: DeepAgentEventDeliveryTable.priority })
+        .from(DeepAgentEventDeliveryTable)
+        .where(
+          and(
+            eq(DeepAgentEventDeliveryTable.event_id, high.id),
+            eq(DeepAgentEventDeliveryTable.subscription_group, "prio-grp"),
+          ),
+        )
+        .get()
+        .pipe(Effect.orDie)
+      expect(hiRow?.priority).toBe("high")
+      // dueRetries orders priority DESC even though normal was owed EARLIER than high/critical.
+      const due = yield* bus.dueRetries(100_004)
+      expect(due.map((d) => d.eventID)).toEqual([critical.id, high.id, normal.id, low.id])
+      // claimDue follows the same persistent ordering.
+      const claim = yield* bus.claimDue({ subscriptionGroup: "prio-grp", claimantId: "w", now: 100_004, limit: 10 })
+      expect(claim.deliveries.map((d) => d.eventID)).toEqual([critical.id, high.id, normal.id, low.id])
+    }),
+  )
+
+  it.effect("NULL-priority legacy delivery rows rank as normal in the ordering", () =>
+    Effect.gen(function* () {
+      const { db } = yield* Database.Service
+      const bus = yield* DeepAgentEventBus.Service
+      setNow(200_000)
+      yield* bus.registerConsumerGroup("null-grp", undefined, "wrk_n")
+      const low = yield* bus.publish(input({ idempotencyKey: "np-low", priority: "low", workspaceID: "wrk_n" }))
+      setNow(200_001)
+      const legacy = yield* bus.publish(input({ idempotencyKey: "np-legacy", workspaceID: "wrk_n" }))
+      setNow(200_002)
+      const high = yield* bus.publish(input({ idempotencyKey: "np-high", priority: "high", workspaceID: "wrk_n" }))
+      // simulate a pre-migration row: NULL priority reads back as "normal".
+      yield* db
+        .update(DeepAgentEventDeliveryTable)
+        .set({ priority: null })
+        .where(
+          and(
+            eq(DeepAgentEventDeliveryTable.event_id, legacy.id),
+            eq(DeepAgentEventDeliveryTable.subscription_group, "null-grp"),
+          ),
+        )
+        .run()
+        .pipe(Effect.orDie)
+      const due = yield* bus.dueRetries(200_003)
+      expect(due.map((d) => d.eventID)).toEqual([high.id, legacy.id, low.id])
+    }),
+  )
+})
+
+describe("DeepAgentEventBus RISK-006 durable rate limiter (multi-process semantics)", () => {
+  // The core multi-process test: TWO independent bus instances (each builds its own layer, exactly
+  // like two OS processes) over ONE shared DB must enforce ONE combined per-workspace quota — the
+  // old in-memory Map gave every instance its own (quota ×N). The ONE database layer is built
+  // once and handed to two bus layers built independently on top of it.
+  test("two bus instances sharing one DB enforce ONE combined quota per workspace", () =>
+    Effect.runPromise(
+      Effect.gen(function* () {
+        const dbService = Context.get(yield* Layer.build(Database.layerFromPath(":memory:")), Database.Service)
+        const mkBus = () =>
+          DeepAgentEventBus.layerWith({ now }).pipe(Layer.provide(Layer.succeed(Database.Service, dbService)))
+        const busA = Context.get(yield* Layer.build(mkBus()), DeepAgentEventBus.Service)
+        const busB = Context.get(yield* Layer.build(mkBus()), DeepAgentEventBus.Service)
+        const mkInput = (key: string, workspaceID: string): DeepAgentEvent.PublishInput => ({
+          type: "ci.failure",
+          source: "ci",
+          workspaceID,
+          payload: {},
+          idempotencyKey: key,
+        })
+        setNow(300_000)
+        // instance A consumes the whole limit=2 quota of wrk_mp.
+        const r1 = yield* busA.tryPublish(mkInput("mp-a1", "wrk_mp"), { limit: 2 })
+        const r2 = yield* busA.tryPublish(mkInput("mp-a2", "wrk_mp"), { limit: 2 })
+        expect("published" in r1).toBe(true)
+        expect("published" in r2).toBe(true)
+        // instance B (fresh in-memory state, SAME durable buckets) sees the quota already exhausted.
+        const dropped = yield* busB.tryPublish(mkInput("mp-b1", "wrk_mp"), { limit: 2 })
+        expect(dropped).toEqual({ dropped: "rate_limited" })
+        // …but another workspace's quota is untouched (still per-workspace, just durable now).
+        const other = yield* busB.tryPublish(mkInput("mp-b2", "wrk_other"), { limit: 2 })
+        expect("published" in other).toBe(true)
+        // crossing the fixed window re-admits (epoch-aligned windows agree across instances).
+        setNow(360_001)
+        const after = yield* busB.tryPublish(mkInput("mp-a3", "wrk_mp"), { limit: 2 })
+        expect("published" in after).toBe(true)
+      }).pipe(Effect.scoped),
+    ),
+  )
 })
diff --git a/packages/core/test/deepagent/activity-authority-facade.test.ts b/packages/core/test/deepagent/activity-authority-facade.test.ts
new file mode 100644
index 00000000..d82fc114
--- /dev/null
+++ b/packages/core/test/deepagent/activity-authority-facade.test.ts
@@ -0,0 +1,432 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { Effect, Exit } from "effect"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import { migrations } from "@deepagent-code/core/database/migration.gen"
+import facadeActivityMigration from "@deepagent-code/core/database/migration/20260816073717_session_facade_activity"
+import { DeepAgentActivityAuthority } from "@deepagent-code/core/deepagent/activity-authority"
+
+const makeDb = EffectDrizzleSqlite.makeWithDefaults()
+const facadeRef = (activityID: string) => ({ activityKind: "facade" as const, activityID })
+
+describe("DeepAgentActivityAuthority facade branch (FEAT-011 T1+T2)", () => {
+  test("fresh path applies the facade migration and reapplication is journal-idempotent", async () => {
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run("PRAGMA foreign_keys = ON")
+        yield* DatabaseMigration.apply(db)
+        yield* DatabaseMigration.applyOnly(db, [facadeActivityMigration])
+        expect(
+          yield* db.get("SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'session_facade_activity'"),
+        ).toEqual({ name: "session_facade_activity" })
+        expect(
+          yield* db.get(
+            "SELECT count(*) AS count FROM migration WHERE id = '20260816073717_session_facade_activity'",
+          ),
+        ).toEqual({ count: 1 })
+        // The isolation fence stays intact: the objective table keeps its ('legacy','v2') CHECK.
+        expect(
+          yield* db.get(
+            "SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'session_activity_objective' AND sql LIKE '%facade%'",
+          ),
+        ).toBeUndefined()
+      }).pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+    )
+  })
+
+  test("upgrade path preserves legacy/v2 objective rows and keeps the kind CHECK fenced", async () => {
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run("PRAGMA foreign_keys = ON")
+        const facadeIndex = migrations.findIndex((migration) => migration.id === facadeActivityMigration.id)
+        expect(facadeIndex).toBeGreaterThan(0)
+        yield* DatabaseMigration.applyOnly(db, migrations.slice(0, facadeIndex))
+        yield* seed(db)
+        // Seed one legacy and one v2 objective row before the facade migration runs.
+        yield* db.run(
+          "INSERT INTO session_input (id, session_id, prompt, delivery, admitted_seq, promoted_seq, time_created) VALUES ('upgrade-input', 'session-1', '{}', 'queue', 1, 1, 30)",
+        )
+        // Both objective rows are auto-projected by admission triggers (legacy during seed,
+        // v2 on session_activity insert); the facade migration must preserve them untouched.
+        yield* db.run(
+          "INSERT INTO session_activity (activity_id, session_id, ordinal, trigger_input_id, delivery, state, created_at, settled_at) VALUES ('upgrade-v2', 'session-1', 0, 'upgrade-input', 'queue', 'active', 30, NULL)",
+        )
+
+        yield* DatabaseMigration.applyOnly(db, [facadeActivityMigration])
+
+        expect(
+          yield* db.all(
+            "SELECT activity_kind, activity_id, version, state, admission_fingerprint FROM session_activity_objective ORDER BY activity_kind",
+          ),
+        ).toEqual([
+          {
+            activity_kind: "legacy",
+            activity_id: "activity-1",
+            version: 1,
+            state: "active",
+            admission_fingerprint: "admission-payload-1",
+          },
+          {
+            activity_kind: "v2",
+            activity_id: "upgrade-v2",
+            version: 1,
+            state: "active",
+            admission_fingerprint: "session-input:upgrade-input",
+          },
+        ])
+        // The facade base table accepts new rows, while the objective CHECK keeps rejecting
+        // 'facade' — that CHECK is the isolation fence between facade and the federation machinery.
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-upgrade', 'panel', 'session-1', 'active', 40, 0)",
+        )
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "INSERT INTO session_activity_objective (activity_kind, activity_id, session_id, version, admission_fingerprint, completion_criteria, enforcement_state, state, no_progress_count, latest_observation_revision, created_at, updated_at) VALUES ('facade', 'facade-upgrade', 'session-1', 1, 'facade-spawn:facade-upgrade', '[]', 'disabled', 'active', 0, -1, 40, 40)",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+      }).pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+    )
+  })
+
+  test("facade never owns an objective row: reconstruct fails closed with NotFoundError", async () => {
+    await run(
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, spawn_tool_call_id, state, created_at, mutation_epoch) VALUES ('facade-spawned', 'task', 'session-1', 'call-spawn-1', 'active', 40, 0)",
+        )
+        // Facade settlement bypasses the objective table entirely, so reconstruct has nothing
+        // to read and must fail closed instead of leaking into the v2 branch.
+        const notFound = yield* DeepAgentActivityAuthority.reconstruct(facadeRef("facade-spawned")).pipe(
+          Effect.flip,
+        )
+        expect(notFound._tag).toBe("ActivityAuthority.NotFoundError")
+        expect(notFound).toMatchObject({ activityKind: "facade", activityID: "facade-spawned" })
+        // And objective rows for facade stay rejected at the schema level.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "INSERT INTO session_activity_objective (activity_kind, activity_id, session_id, version, admission_fingerprint, completion_criteria, enforcement_state, state, no_progress_count, latest_observation_revision, created_at, updated_at) VALUES ('facade', 'facade-nonexistent', 'session-1', 1, 'forged', '[]', 'disabled', 'active', 0, -1, 40, 40)",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+      }),
+    )
+  })
+
+  test("preserves facade terminal reasons and exact retries for every terminal state", async () => {
+    for (const [state, baseState] of [
+      ["completed", "settled"],
+      ["interrupted", "interrupted"],
+      ["recovery_required", "failed"],
+    ] as const) {
+      await run(
+        Effect.gen(function* () {
+          const activityID = "facade-settle-" + state
+          const facadeRefForState = facadeRef(activityID)
+          const terminalReason = "terminal-reason-" + state
+          const { db } = yield* Database.Service
+          yield* db.run(
+            `INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('${activityID}', 'goal', 'session-1', 'active', 40, 0)`,
+          )
+
+          // Fresh rows start at mutation_epoch 0; settlement bumps it to 1.
+          const settled = yield* DeepAgentActivityAuthority.settle({
+            ...facadeRefForState,
+            expectedVersion: 0,
+            state,
+            terminalReason,
+          })
+          expect(settled).toMatchObject({
+            activityKind: "facade",
+            version: 1,
+            state,
+            terminalReason,
+            sessionID: "session-1",
+          })
+          // Exact retry is idempotent: same terminal state + reason returns the same projection.
+          expect(
+            yield* DeepAgentActivityAuthority.settle({
+              ...facadeRefForState,
+              expectedVersion: 0,
+              state,
+              terminalReason,
+            }),
+          ).toEqual(settled)
+          // Three-state mapping lands on the base table; no objective row is ever written.
+          expect(
+            yield* db.get(
+              `SELECT state, reason_code FROM session_facade_activity WHERE activity_id = '${activityID}'`,
+            ),
+          ).toEqual({ state: baseState, reason_code: terminalReason })
+          expect(
+            yield* db.get(
+              `SELECT count(*) AS count FROM session_activity_objective WHERE activity_kind = 'facade' AND activity_id = '${activityID}'`,
+            ),
+          ).toEqual({ count: 0 })
+        }),
+      )
+    }
+  })
+
+  test("facade settlement is CAS-guarded against version and base drift", async () => {
+    await run(
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-cas', 'panel', 'session-1', 'active', 40, 0)",
+        )
+        // Stale expectedVersion (mutation_epoch token) fails closed before touching the base table.
+        expect(
+          Exit.isFailure(
+            yield* DeepAgentActivityAuthority.settle({
+              ...facadeRef("facade-cas"),
+              expectedVersion: 99,
+              state: "completed",
+              terminalReason: "stale_version",
+            }).pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        expect(
+          yield* db.get("SELECT state FROM session_facade_activity WHERE activity_id = 'facade-cas'"),
+        ).toEqual({ state: "active" })
+
+        // A base that was settled out of band conflicts on settle (no replayable transition).
+        yield* db.run(
+          "UPDATE session_facade_activity SET state = 'interrupted', reason_code = 'out_of_band', settled_at = 41 WHERE activity_id = 'facade-cas'",
+        )
+        expect(
+          Exit.isFailure(
+            yield* DeepAgentActivityAuthority.settle({
+              ...facadeRef("facade-cas"),
+              expectedVersion: 0,
+              state: "completed",
+              terminalReason: "activity_complete",
+            }).pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        expect(
+          yield* db.get("SELECT state, reason_code FROM session_facade_activity WHERE activity_id = 'facade-cas'"),
+        ).toEqual({ state: "interrupted", reason_code: "out_of_band" })
+
+        // Settling an already-terminal base with a different outcome is rejected.
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-cas-terminal', 'task', 'session-1', 'active', 42, 0)",
+        )
+        yield* DeepAgentActivityAuthority.settle({
+          ...facadeRef("facade-cas-terminal"),
+          expectedVersion: 0,
+          state: "interrupted",
+          terminalReason: "first_interrupt",
+        })
+        expect(
+          Exit.isFailure(
+            yield* DeepAgentActivityAuthority.settle({
+              ...facadeRef("facade-cas-terminal"),
+              expectedVersion: 1,
+              state: "completed",
+              terminalReason: "late_completion",
+            }).pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        expect(
+          yield* db.get(
+            "SELECT state, reason_code FROM session_facade_activity WHERE activity_id = 'facade-cas-terminal'",
+          ),
+        ).toEqual({ state: "interrupted", reason_code: "first_interrupt" })
+
+        // Settling an unknown facade activity fails closed with NotFoundError.
+        const missing = yield* DeepAgentActivityAuthority.settle({
+          ...facadeRef("facade-missing"),
+          expectedVersion: 0,
+          state: "completed",
+          terminalReason: "missing",
+        }).pipe(Effect.flip)
+        expect(missing._tag).toBe("ActivityAuthority.NotFoundError")
+        expect(missing).toMatchObject({ activityKind: "facade", activityID: "facade-missing" })
+      }),
+    )
+  })
+
+  test("partial unique index fails closed on a second active facade activity per parent and subkind", async () => {
+    await run(
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-index-first', 'task', 'session-1', 'active', 40, 0)",
+        )
+        // Same parent + subkind while the first is still active: BUG-004 shape is rejected.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-index-second', 'task', 'session-1', 'active', 41, 0)",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        // A different subkind does not collide.
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-index-other-subkind', 'goal', 'session-1', 'active', 42, 0)",
+        )
+        // Settling frees the slot for the next active activity of that subkind.
+        yield* DeepAgentActivityAuthority.settle({
+          ...facadeRef("facade-index-first"),
+          expectedVersion: 0,
+          state: "completed",
+          terminalReason: "activity_complete",
+        })
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-index-next', 'task', 'session-1', 'active', 43, 0)",
+        )
+        expect(
+          yield* db.get(
+            "SELECT count(*) AS count FROM session_facade_activity WHERE parent_session_id = 'session-1' AND subkind = 'task' AND state = 'active'",
+          ),
+        ).toEqual({ count: 1 })
+      }),
+    )
+  })
+
+  test("facade base lifecycle triggers mirror the legacy legal-update fence", async () => {
+    await run(
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-lifecycle', 'task', 'session-1', 'active', 40, 0)",
+        )
+        // Binding columns (including source) are immutable.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run("UPDATE session_facade_activity SET subkind = 'goal' WHERE activity_id = 'facade-lifecycle'")
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run("UPDATE session_facade_activity SET source = 'forged' WHERE activity_id = 'facade-lifecycle'")
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        // Terminal transitions require settled_at + reason_code in one shot.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "UPDATE session_facade_activity SET state = 'settled', settled_at = 41 WHERE activity_id = 'facade-lifecycle'",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        yield* db.run(
+          "UPDATE session_facade_activity SET state = 'settled', reason_code = 'stop', settled_at = 41, mutation_epoch = mutation_epoch + 1 WHERE activity_id = 'facade-lifecycle'",
+        )
+        // Terminal rows are single-shot: no further updates are legal.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "UPDATE session_facade_activity SET state = 'interrupted', reason_code = 'late', settled_at = 42 WHERE activity_id = 'facade-lifecycle'",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+      }),
+    )
+  })
+
+  test("recoverActivityToRequired facade branch is fenced fail-closed by permission child tables", async () => {
+    await run(
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* db.run(
+          "INSERT INTO session_facade_activity (activity_id, subkind, parent_session_id, state, created_at, mutation_epoch) VALUES ('facade-recover', 'panel', 'session-1', 'active', 40, 0)",
+        )
+        // T1 scope keeps permission request/dispatch child tables on ('legacy','v2') CHECKs, so
+        // facade activities can never own a started permission effect; the recover branch's
+        // objective-table CAS is unreachable for facade and the fence guarantees it. Recovery
+        // intent for facade is expressed through settle(state: 'recovery_required') → 'failed'.
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "INSERT INTO session_activity_permission_request (request_id, activity_kind, activity_id, session_id, project_id, request_kind, idempotency_key, permission, patterns, always_patterns, metadata_hash, state, authority_epoch, requested_scope, owner_type, owner_id, created_at) VALUES ('facade-recover-request', 'facade', 'facade-recover', 'session-1', 'project-1', 'tool', 'facade-recover-key', 'bash', '[\"touch facade\"]', '[\"touch facade\"]', 'meta-1', 'pending', 0, 'once', 'runtime', 'runtime-facade', 40)",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        expect(
+          Exit.isFailure(
+            yield* db
+              .run(
+                "INSERT INTO session_activity_permission_effect_dispatch (receipt_id, request_id, activity_kind, activity_id, session_id, project_id, tool_message_id, tool_call_id, tool_name, consumer_id, idempotency_key, owner_id, state, version, started_at) VALUES ('facade-recover-receipt', 'request-missing', 'facade', 'facade-recover', 'session-1', 'project-1', 'assistant-facade', 'call-facade', 'bash', 'tool:assistant-facade:call-facade', 'facade-recover-effect', 'runtime-facade', 'started', 1, 40)",
+              )
+              .pipe(Effect.exit),
+          ),
+        ).toBe(true)
+        // Recovery-required settlement lands as base state 'failed' (v2 mapping), leaving the
+        // base in a terminal shape that recoverActivityToRequired would recognize as done.
+        const settled = yield* DeepAgentActivityAuthority.settle({
+          ...facadeRef("facade-recover"),
+          expectedVersion: 0,
+          state: "recovery_required",
+          terminalReason: "permission_effect_outcome_unknown_after_restart",
+        })
+        expect(settled).toMatchObject({ version: 1, state: "recovery_required" })
+        expect(
+          yield* db.get("SELECT state, reason_code FROM session_facade_activity WHERE activity_id = 'facade-recover'"),
+        ).toEqual({ state: "failed", reason_code: "permission_effect_outcome_unknown_after_restart" })
+      }),
+    )
+  })
+})
+
+function run<A, E>(effect: Effect.Effect<A, E, Database.Service>) {
+  return Effect.runPromise(
+    Effect.gen(function* () {
+      const db = yield* makeDb
+      yield* db.run("PRAGMA foreign_keys = ON")
+      yield* DatabaseMigration.apply(db)
+      yield* seed(db)
+      return yield* effect.pipe(Effect.provideService(Database.Service, { db }))
+    }).pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+  )
+}
+
+function seed(db: Effect.Success<typeof makeDb>) {
+  return Effect.gen(function* () {
+    yield* db.run(
+      "INSERT INTO project (id, worktree, sandboxes, time_created, time_updated) VALUES ('project-1', '/tmp/project-1', '[]', 1, 1)",
+    )
+    yield* db.run(
+      "INSERT INTO session (id, project_id, slug, directory, title, version, time_created, time_updated) VALUES ('session-1', 'project-1', 'session-1', '/tmp/project-1', 'Activity', '1', 1, 1)",
+    )
+    yield* db.run(
+      "INSERT INTO session (id, project_id, slug, directory, title, version, time_created, time_updated) VALUES ('session-2', 'project-1', 'session-2', '/tmp/project-1', 'Other', '1', 1, 1)",
+    )
+    yield* db.run(
+      "INSERT INTO session_intent (intent_id, session_id, source, state, selected_variant, selected_payload_hash, delivery, admitted_message_id, mutation_epoch, version, time_created, time_admitted, time_updated) VALUES ('intent-1', 'session-1', 'composer', 'admitted', 'original', 'admission-payload-1', 'turn', 'message-1', 0, 1, 1, 1, 1)",
+    )
+    yield* db.run(
+      "INSERT INTO session_activity_admission (admission_id, session_id, source_kind, legacy_intent_id, admitted_message_id, delivery, payload_fingerprint_kind, payload_fingerprint, created_at) VALUES ('admission-1', 'session-1', 'legacy_intent', 'intent-1', 'message-1', 'turn', 'payload_hash', 'admission-payload-1', 1)",
+    )
+    yield* db.run(
+      "INSERT INTO session_legacy_activity (activity_id, session_id, ordinal, trigger_admission_id, owner_token, state, terminal_reason, created_at, settled_at) VALUES ('activity-1', 'session-1', 0, 'admission-1', 'owner-1', 'active', NULL, 1, NULL)",
+    )
+    yield* db.run(
+      "INSERT INTO session_legacy_activity_admission (activity_id, admission_id, ordinal, role, attached_at) VALUES ('activity-1', 'admission-1', 0, 'trigger', 1)",
+    )
+  })
+}
diff --git a/packages/core/test/deepagent/domain-pack-retrieval-isolation.test.ts b/packages/core/test/deepagent/domain-pack-retrieval-isolation.test.ts
index 706678e2..3e7693dd 100644
--- a/packages/core/test/deepagent/domain-pack-retrieval-isolation.test.ts
+++ b/packages/core/test/deepagent/domain-pack-retrieval-isolation.test.ts
@@ -6,6 +6,7 @@ import * as knowledgeSource from "../../src/deepagent/knowledge-source"
 import { seedCoreKnowledge } from "../../src/deepagent/knowledge-seed"
 import { openUserGlobalStore } from "../../src/deepagent/durable-knowledge-store"
 import { retrieve } from "../../src/deepagent/knowledge-retriever"
+import type { ActivateOptions } from "../../src/deepagent/domain-pack"
 import type { TaskContext, ToolContext } from "../../src/deepagent/prompt-policy"
 import type { Selection } from "../../src/deepagent/released-snapshot"
 import { releasedUserGlobalSelection } from "./released-selection-fixture"
@@ -33,7 +34,7 @@ const task = (userRequest: string): TaskContext => ({
   validationCommands: [],
 })
 
-const selectedRefs = (userRequest: string, releasedSelection: Selection) => {
+const selectedRefs = (userRequest: string, releasedSelection: Selection, domainOptions?: ActivateOptions) => {
   const result = retrieve({
     mode: "max",
     task: task(userRequest),
@@ -41,6 +42,7 @@ const selectedRefs = (userRequest: string, releasedSelection: Selection) => {
     round: 1,
     previousFailures: 0,
     releasedSelection,
+    ...(domainOptions ? { domainOptions } : {}),
   })
   return [...(result?.strategyRefs ?? []), ...(result?.methodologyRefs ?? [])]
 }
@@ -147,4 +149,40 @@ describe("domain pack retrieval isolation", () => {
       )
     })
   })
+
+  // FEAT-001: pinned packs (user overrides) must force their refs into the selection even when
+  // the task text activates the pack nowhere.
+  describe("pinned packs (domainOptions overrides)", () => {
+    const genericTask = "rename a local helper function in the user service module"
+
+    test("unpinned generic task does not select gpu refs", () => {
+      withSeededKnowledge((releasedSelection) => {
+        expectDomainSelection(genericTask, [], releasedSelection, ["gpu"])
+      })
+    })
+
+    test("legacy single-value override still force-selects the pinned pack refs", () => {
+      withSeededKnowledge((releasedSelection) => {
+        const refs = selectedRefs(genericTask, releasedSelection, { override: "code.gpu-kernel" })
+        expect(refs.some((ref) => ref.includes("gpu"))).toBe(true)
+      })
+    })
+
+    test("multi-pin overrides force-select every pinned pack's refs", () => {
+      withSeededKnowledge((releasedSelection) => {
+        const refs = selectedRefs(genericTask, releasedSelection, { overrides: ["code.gpu-kernel"] })
+        expect(refs.some((ref) => ref.includes("gpu"))).toBe(true)
+      })
+    })
+
+    test("override and overrides merge without duplicates", () => {
+      withSeededKnowledge((releasedSelection) => {
+        const refs = selectedRefs(genericTask, releasedSelection, {
+          override: "code.gpu-kernel",
+          overrides: ["code.gpu-kernel"],
+        })
+        expect(refs.some((ref) => ref.includes("gpu"))).toBe(true)
+      })
+    })
+  })
 })
diff --git a/packages/core/test/deepagent/pack-activation-authority.test.ts b/packages/core/test/deepagent/pack-activation-authority.test.ts
new file mode 100644
index 00000000..e540cfff
--- /dev/null
+++ b/packages/core/test/deepagent/pack-activation-authority.test.ts
@@ -0,0 +1,126 @@
+// FEAT-002 regression suite: ONE pack-activation authority per run. Locks that the unified
+// gateway profile (profile-builder.buildProfile) and the retriever's activationForProfile produce
+// the same active pack set, and that the deterministic read-only policy flip follows that SAME
+// active_pack_set the run records. Also pins the pre/post-unification verdict comparison so the
+// deterministic-task.ts:86-91 `activePackIds.includes("code.query")` flip cannot silently regress.
+
+import { describe, expect, test, beforeAll } from "bun:test"
+import { mkdtempSync, rmSync } from "node:fs"
+import { tmpdir } from "node:os"
+import path from "node:path"
+import { buildProfile } from "../../src/deepagent/profile-builder"
+import { activationForProfile } from "../../src/deepagent/knowledge-retriever"
+import { configureRegistry, type ExtendedProblemProfile } from "../../src/deepagent/domain-pack-registry"
+import { deterministicToolPolicy, shouldActivateQueryControls } from "../../src/deepagent/deterministic-task"
+
+beforeAll(() => configureRegistry(undefined))
+
+const withWorkspace = (fn: (cwd: string) => void) => {
+  const cwd = mkdtempSync(path.join(tmpdir(), "deepagent-feat002-"))
+  try {
+    fn(cwd)
+  } finally {
+    rmSync(cwd, { recursive: true, force: true })
+  }
+}
+
+// The pre-FEAT-002 profile the gateway hardcoded for the recorded pack snapshot (audit finding:
+// scenario_mode/task_kind/languages fixed, repo_signals = run.input.feature only).
+const legacyHardcodedProfile = (feature: string): ExtendedProblemProfile => ({
+  scenario_mode: "intelligence",
+  agent_strength: "high",
+  task_kind: "implement",
+  code_domains: ["code"],
+  business_domains: [],
+  platforms: [],
+  languages: ["typescript"],
+  frameworks: [],
+  data_classes: [],
+  risk_markers: [],
+  repo_signals: [feature],
+  round_signals: [],
+  user_overrides: [],
+})
+
+describe("FEAT-002 unified pack activation authority", () => {
+  test("read-only query request activates code.query and flips the deterministic policy read-only", () => {
+    withWorkspace((cwd) => {
+      const request = "请查一下数据库里有多少条用户记录"
+      const profile = buildProfile({ cwd, agentMode: "max", scenarioMode: "intelligence", userRequest: request })
+      const activation = activationForProfile(profile)
+      expect(activation.activePackIds).toContain("code.query")
+      const policy = deterministicToolPolicy({ raw: request, activePackIds: activation.activePackIds })
+      expect(policy.read_only).toBe(true)
+      expect(policy.denied_actions).toContain("update")
+    })
+  })
+
+  test("mutation request never activates code.query and keeps mutation tools allowed", () => {
+    withWorkspace((cwd) => {
+      const request = "请修复登录逻辑并更新依赖"
+      const profile = buildProfile({ cwd, agentMode: "max", scenarioMode: "intelligence", userRequest: request })
+      const activation = activationForProfile(profile)
+      expect(activation.activePackIds).not.toContain("code.query")
+      expect(deterministicToolPolicy({ raw: request, activePackIds: activation.activePackIds }).read_only).toBe(false)
+    })
+  })
+
+  test("authority flip: state-inspection queries missed by the legacy hardcoded profile are now covered", () => {
+    withWorkspace((cwd) => {
+      const request = "看一下当前状态"
+      // Pre-unification record truth: the hardcoded profile could NOT activate code.query here.
+      const legacy = activationForProfile(legacyHardcodedProfile(request))
+      expect(legacy.activePackIds).not.toContain("code.query")
+      // Post-unification: the single authoritative profile activates it.
+      const unified = activationForProfile(
+        buildProfile({ cwd, agentMode: "max", scenarioMode: "intelligence", userRequest: request }),
+      )
+      expect(unified.activePackIds).toContain("code.query")
+      // The deterministic verdict stays read-only on BOTH sides — the flip is about WHO decides
+      // (pack authority), and the verdict must not regress in either direction.
+      expect(shouldActivateQueryControls({ raw: request, activePackIds: legacy.activePackIds })).toBe(true)
+      expect(shouldActivateQueryControls({ raw: request, activePackIds: unified.activePackIds })).toBe(true)
+    })
+  })
+
+  test("count queries activated under the legacy profile stay activated after unification", () => {
+    withWorkspace((cwd) => {
+      const request = "请查一下数据库里有多少条用户记录"
+      const legacy = activationForProfile(legacyHardcodedProfile(request))
+      const unified = activationForProfile(
+        buildProfile({ cwd, agentMode: "max", scenarioMode: "intelligence", userRequest: request }),
+      )
+      // Both authorities agree on the pack that drives the read-only flip — no silent regression.
+      expect(legacy.activePackIds).toContain("code.query")
+      expect(unified.activePackIds).toContain("code.query")
+      expect(deterministicToolPolicy({ raw: request, activePackIds: unified.activePackIds }).read_only).toBe(true)
+    })
+  })
+
+  test("active_pack_set membership alone can activate query controls (deterministic-task.ts:86-91 lock)", () => {
+    const neutral = "run the scheduled job"
+    expect(shouldActivateQueryControls({ raw: neutral })).toBe(false)
+    expect(shouldActivateQueryControls({ raw: neutral, activePackIds: ["code.query"] })).toBe(true)
+    // Mutation intent still wins even when code.query is active (locked behavior).
+    expect(shouldActivateQueryControls({ raw: "请删除旧记录", activePackIds: ["code.query"] })).toBe(false)
+  })
+
+  test("activation is deterministic and honors pinned overrides (FEAT-001 behavior preserved)", () => {
+    withWorkspace((cwd) => {
+      const signals = {
+        cwd,
+        agentMode: "max" as const,
+        scenarioMode: "intelligence" as const,
+        userRequest: "rename a local helper function",
+      }
+      const a = activationForProfile(buildProfile(signals))
+      const b = activationForProfile(buildProfile(signals))
+      expect(b.activePackIds).toEqual(a.activePackIds)
+      // Core fallback packs are part of the retrieval-constrained active set the gateway records.
+      expect(a.activePackIds).toContain("code.core")
+      // Pins remain force-included through the unified authority.
+      const pinned = activationForProfile(buildProfile({ ...signals, userOverrides: ["code.gpu-kernel"] }))
+      expect(pinned.activePackIds).toContain("code.gpu-kernel")
+    })
+  })
+})
diff --git a/packages/core/test/deepagent/pinned-packs.test.ts b/packages/core/test/deepagent/pinned-packs.test.ts
new file mode 100644
index 00000000..50f37b27
--- /dev/null
+++ b/packages/core/test/deepagent/pinned-packs.test.ts
@@ -0,0 +1,62 @@
+import { describe, expect, test } from "bun:test"
+import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import path from "node:path"
+import { PINNED_PACKS_FILE, pinnedPacksFile, readPinnedPacks, writePinnedPacks } from "../../src/deepagent/pinned-packs"
+
+const withTempMemoryDir = (fn: (memoryDir: string) => void) => {
+  const dir = mkdtempSync(path.join(tmpdir(), "deepagent-pinned-packs-"))
+  try {
+    fn(path.join(dir, "memory"))
+  } finally {
+    rmSync(dir, { recursive: true, force: true })
+  }
+}
+
+describe("pinned-packs module (FEAT-001)", () => {
+  test("missing file reads as no pins", () => {
+    withTempMemoryDir((memoryDir) => {
+      expect(readPinnedPacks(memoryDir)).toEqual([])
+    })
+  })
+
+  test("corrupt JSON degrades to no pins instead of throwing", () => {
+    withTempMemoryDir((memoryDir) => {
+      mkdirSync(memoryDir, { recursive: true })
+      writeFileSync(pinnedPacksFile(memoryDir), "{not json")
+      expect(readPinnedPacks(memoryDir)).toEqual([])
+    })
+  })
+
+  test("non-array JSON payload degrades to no pins", () => {
+    withTempMemoryDir((memoryDir) => {
+      mkdirSync(memoryDir, { recursive: true })
+      writeFileSync(pinnedPacksFile(memoryDir), JSON.stringify({ packs: ["code.core"] }))
+      expect(readPinnedPacks(memoryDir)).toEqual([])
+    })
+  })
+
+  test("non-string entries are filtered out", () => {
+    withTempMemoryDir((memoryDir) => {
+      mkdirSync(memoryDir, { recursive: true })
+      writeFileSync(pinnedPacksFile(memoryDir), JSON.stringify(["code.core", 42, null, { id: "x" }, "risk.security"]))
+      expect(readPinnedPacks(memoryDir)).toEqual(["code.core", "risk.security"])
+    })
+  })
+
+  test("write then read round-trips pins (deduplicated, sorted)", () => {
+    withTempMemoryDir((memoryDir) => {
+      writePinnedPacks(memoryDir, ["risk.security", "code.core", "risk.security"])
+      expect(readPinnedPacks(memoryDir)).toEqual(["code.core", "risk.security"])
+    })
+  })
+
+  test("write creates the memory dir on demand and pins the canonical file name", () => {
+    withTempMemoryDir((memoryDir) => {
+      expect(PINNED_PACKS_FILE).toBe("pinned-packs.json")
+      writePinnedPacks(memoryDir, ["code.core"])
+      expect(pinnedPacksFile(memoryDir)).toBe(path.join(memoryDir, PINNED_PACKS_FILE))
+      expect(readPinnedPacks(memoryDir)).toEqual(["code.core"])
+    })
+  })
+})
diff --git a/packages/core/test/deepagent/plan-controller.test.ts b/packages/core/test/deepagent/plan-controller.test.ts
index fd993181..eff1dd19 100644
--- a/packages/core/test/deepagent/plan-controller.test.ts
+++ b/packages/core/test/deepagent/plan-controller.test.ts
@@ -102,6 +102,13 @@ describe("tool classification", () => {
     }
   })
 
+  test("FEAT-011 T5: facade activity_start/activity_control are mutating; status/result are read-only", () => {
+    expect(isMutatingTool("activity_start")).toBe(true)
+    expect(isMutatingTool("activity_control")).toBe(true)
+    expect(isMutatingTool("activity_status")).toBe(false)
+    expect(isMutatingTool("activity_result")).toBe(false)
+  })
+
   test("read/search/plan/task are never mutating (must pass even when stale)", () => {
     for (const t of ["read", "grep", "glob", "list", "search", "plan", "task", "webfetch"]) {
       expect(isMutatingTool(t)).toBe(false)
diff --git a/packages/core/test/event-snapshot.test.ts b/packages/core/test/event-snapshot.test.ts
index 144f57a9..89083174 100644
--- a/packages/core/test/event-snapshot.test.ts
+++ b/packages/core/test/event-snapshot.test.ts
@@ -535,4 +535,76 @@ describe("EventV2 canonical projection snapshots", () => {
       expect(yield* db.select().from(EventSnapshotChunkTable).all()).toEqual([])
     }),
   )
+
+  // RISK-003 ⑤ (BUG-407-010 §9.2/§11.4): the importable aggregate snapshot body. The bundle is
+  // the portable evidence form of the same authority the row/chunk wire transfer carries.
+  it.effect("exports an aggregate snapshot as an importable bundle and imports it into an empty database", () =>
+    Effect.gen(function* () {
+      const source = yield* EventV2.Service
+      const sourceDb = (yield* Database.Service).db
+      const bundleSessionID = SessionV2.ID.make("ses_snapshot_bundle_roundtrip")
+      yield* sourceDb.insert(ProjectTable).values({ id: projectID, worktree: AbsolutePath.make("/project"), sandboxes: [] }).run().pipe(Effect.orDie)
+      yield* source.publish(SessionV1.Event.Created, {
+        sessionID: bundleSessionID,
+        info: SessionV1.SessionInfo.make({
+          id: bundleSessionID, slug: "bundle", version: "test", projectID, directory: "/project", title: "bundle",
+          cost: 0, tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } }, time: { created: 1, updated: 1 },
+        }),
+      })
+      yield* source.publish(SessionV1.Event.MessageUpdated, {
+        sessionID: bundleSessionID,
+        info: {
+          id: SessionV1.MessageID.make("msg_bundle_one"),
+          sessionID: bundleSessionID,
+          role: "user" as const,
+          time: { created: 1 },
+          agent: "build",
+          model: { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("test") },
+          system: "bundled",
+        },
+      })
+      const snapshot = yield* source.checkpoint({
+        aggregateID: bundleSessionID,
+        throughSeq: EventV2.Cursor.make(1),
+        expectedLatest: EventV2.Cursor.make(1),
+        codec: "session-projection",
+        schemaVersion: 1,
+      })
+
+      const bundle = yield* source.exportSnapshotBundle!({ snapshotID: snapshot.snapshotID })
+      const parsed = JSON.parse(bundle) as Record<string, unknown>
+      expect(parsed.format).toBe(EventV2.SNAPSHOT_BUNDLE_FORMAT)
+      expect(typeof parsed.bundleHash).toBe("string")
+      expect((parsed.rows as unknown[]).length).toBeGreaterThan(0)
+
+      const tamperedChunk = JSON.parse(bundle) as { chunks: Record<string, string[]> }
+      const tamperedRowHash = Object.keys(tamperedChunk.chunks)[0]!
+      tamperedChunk.chunks[tamperedRowHash] = [...tamperedChunk.chunks[tamperedRowHash]!.slice(0, -1), Buffer.from("tampered").toString("base64")]
+      const tampered = JSON.stringify(tamperedChunk)
+
+      const tmp = yield* Effect.acquireRelease(Effect.promise(() => tmpdir()), (value) => Effect.promise(() => value[Symbol.asyncDispose]()))
+      const targetDatabase = Database.layerFromPath(path.join(tmp.path, "bundle-target.sqlite"))
+      const targetEvents = EventV2.layer.pipe(Layer.provide(targetDatabase))
+      const targetProjector = SessionProjector.layer.pipe(Layer.provide(targetEvents), Layer.provide(targetDatabase))
+      yield* Effect.gen(function* () {
+        const target = yield* EventV2.Service
+        const targetDb = (yield* Database.Service).db
+        yield* targetDb.insert(ProjectTable).values({ id: projectID, worktree: AbsolutePath.make("/project"), sandboxes: [] }).run().pipe(Effect.orDie)
+        const invalid = yield* target.importSnapshotBundle!("not-json").pipe(Effect.catchDefect(Effect.succeed))
+        expect(invalid).toBeInstanceOf(EventV2.InvalidSyncEventError)
+        const corrupted = yield* target.importSnapshotBundle!(tampered).pipe(Effect.catchDefect(Effect.succeed))
+        expect(corrupted).toBeInstanceOf(EventV2.InvalidSyncEventError)
+        expect(yield* targetDb.select().from(EventSnapshotRowTable).all()).toEqual([])
+
+        const imported = yield* target.importSnapshotBundle!(bundle)
+        expect(imported).toMatchObject({ snapshotID: snapshot.snapshotID, aggregateID: bundleSessionID, throughSeq: 1 })
+        expect(yield* targetDb.select().from(SessionTable).where(eq(SessionTable.id, bundleSessionID)).get().pipe(Effect.orDie)).toBeDefined()
+        expect(yield* targetDb.select().from(MessageTable).where(eq(MessageTable.id, SessionV1.MessageID.make("msg_bundle_one"))).get().pipe(Effect.orDie)).toBeDefined()
+        expect(yield* targetDb.select().from(EventSequenceTable).where(eq(EventSequenceTable.aggregate_id, bundleSessionID)).get().pipe(Effect.orDie))
+          .toMatchObject({ seq: 1, retention_floor_seq: 1, snapshot_id: snapshot.snapshotID })
+        yield* target.importSnapshotBundle!(bundle)
+        expect(yield* targetDb.select().from(EventSnapshotRowTable).where(eq(EventSnapshotRowTable.aggregate_id, bundleSessionID)).all()).not.toHaveLength(0)
+      }).pipe(Effect.provide(Layer.fresh(Layer.mergeAll(targetDatabase, targetEvents, targetProjector))))
+    }),
+  )
 })
diff --git a/packages/core/test/event.test.ts b/packages/core/test/event.test.ts
index a17e4dad..7c95ff13 100644
--- a/packages/core/test/event.test.ts
+++ b/packages/core/test/event.test.ts
@@ -1708,4 +1708,71 @@ describe("EventV2", () => {
       expect(received[0]?.data).toEqual({ id: aggregateID, text: "replayed" })
     }),
   )
+
+  // BUG-407-010 / REL-002: until the canonical owner handoff completes, a durable source fence
+  // (`event_sequence.write_fence_transfer_id` backed by an admitted transfer operation) must fail
+  // closed for both replay and local publish — no event may land on the fenced aggregate.
+  it.effect("a durable transfer write fence fails closed for replay and publish before handoff completes", () =>
+    Effect.gen(function* () {
+      const events = yield* EventV2.Service
+      const { db } = yield* Database.Service
+      const aggregateID = "session-transfer-fenced"
+      // fixture-exempt: bare project/session rows exist only to satisfy the
+      // session_transfer_operation FK so the fence authority trigger admits the transfer.
+      yield* db.run(sql`
+        INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+        VALUES ('project-transfer-fence', '/tmp/transfer-fence', '[]', 1, 1)
+      `)
+      // fixture-exempt: bare session row anchors the transfer fence aggregate (see above).
+      yield* db.run(sql`
+        INSERT INTO session (id, project_id, slug, directory, title, version, time_created, time_updated)
+        VALUES (${aggregateID}, 'project-transfer-fence', 'transfer-fence', '/tmp/transfer-fence', 'Transfer fence', 'test', 1, 1)
+      `)
+      yield* events.publish(SyncMessage, { id: aggregateID, text: "before handoff" })
+      // fixture-exempt: seeds an admitted (in-flight) transfer operation; the handoff never
+      // advances, so the source fence must keep the aggregate fail closed.
+      yield* db.run(sql`
+        INSERT INTO session_transfer_operation (
+          transfer_id, session_id, source_owner_id, target_owner_id,
+          source_event_seq, source_mutation_epoch, state, request_hash, created_at, updated_at
+        ) VALUES (
+          'transfer-fence', ${aggregateID}, 'source-owner', 'target-owner',
+          0, 0, 'admitted', ${"f".repeat(64)}, 1, 1
+        )
+      `)
+      yield* db
+        .update(EventSequenceTable)
+        .set({ write_fence_transfer_id: "transfer-fence" })
+        .where(eq(EventSequenceTable.aggregate_id, aggregateID))
+        .run()
+        .pipe(Effect.orDie)
+
+      const replayExit = yield* events
+        .replay(
+          {
+            id: EventV2.ID.create(),
+            type: EventV2.versionedType(SyncMessage.type, 1),
+            seq: 1,
+            aggregateID,
+            data: { id: aggregateID, text: "stolen" },
+          },
+          { ownerID: "target-owner", strictOwner: true },
+        )
+        .pipe(Effect.exit)
+      expect(String(replayExit)).toContain("is fenced by transfer transfer-fence")
+
+      const publishExit = yield* events
+        .publish(SyncMessage, { id: aggregateID, text: "local write after fence" })
+        .pipe(Effect.exit)
+      expect(String(publishExit)).toContain("is fenced by transfer transfer-fence")
+
+      const rows = yield* db
+        .select({ seq: EventTable.seq })
+        .from(EventTable)
+        .where(eq(EventTable.aggregate_id, aggregateID))
+        .all()
+        .pipe(Effect.orDie)
+      expect(rows.map((row) => row.seq)).toEqual([0])
+    }),
+  )
 })
diff --git a/packages/core/test/lmn-events.test.ts b/packages/core/test/lmn-events.test.ts
index 02152044..4089df62 100644
--- a/packages/core/test/lmn-events.test.ts
+++ b/packages/core/test/lmn-events.test.ts
@@ -10,6 +10,21 @@ describe("LMNEvents", () => {
     expect(LMNEvents.GOAL_COMPLETED).toBe("goal.completed")
     expect(LMNEvents.PANEL_VERDICT).toBe("panel.verdict")
     expect(LMNEvents.IM_MESSAGE_CREATED).toBe("im.message.created") // §B1 double-write
+    expect(LMNEvents.PACK_CHANGED).toBe("pack.changed") // FEAT-003 pack pin/unpin eventing
+    expect(LMNEvents.WIKI_PAGE_CHANGED).toBe("wiki.page.changed") // FEAT-006 wiki/knowledge change eventing
+  })
+
+  test("FEAT-003 pack.changed is a pure observation — NOT an approval-queue / archive trigger", () => {
+    expect(LMNEvents.isApprovalQueueCandidate(LMNEvents.PACK_CHANGED)).toBe(false)
+    expect(LMNEvents.isArchiveTrigger(LMNEvents.PACK_CHANGED)).toBe(false)
+  })
+
+  test("FEAT-006 wiki.page.changed is a pure observation — NOT an approval-queue / archive trigger", () => {
+    // The archive-trigger exclusion is the FEAT-006 SELF-LOOP GUARD: the event-driven archiver
+    // consumes only session.completed/goal.completed, so its own archive writes' wiki.page.changed
+    // can never re-trigger archival (no archiver→event→archiver cascade).
+    expect(LMNEvents.isApprovalQueueCandidate(LMNEvents.WIKI_PAGE_CHANGED)).toBe(false)
+    expect(LMNEvents.isArchiveTrigger(LMNEvents.WIKI_PAGE_CHANGED)).toBe(false)
   })
 
   test("§B im.message.created is NOT an approval-queue / archive trigger", () => {
diff --git a/packages/core/test/remote-compact-persistence-migration.test.ts b/packages/core/test/remote-compact-persistence-migration.test.ts
new file mode 100644
index 00000000..1fa44ca6
--- /dev/null
+++ b/packages/core/test/remote-compact-persistence-migration.test.ts
@@ -0,0 +1,239 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { Effect, Exit } from "effect"
+import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
+import remoteCompactPersistence from "../src/database/migration/20260820000000_remote_compact_persistence"
+
+// UPD-005 Gap 1 + Gap 2 schema migration. The migration is not registered in
+// migration.gen.ts yet (mainline registers it), so this test applies the tracked
+// history first and then the single migration via applyOnly.
+const migrationID = "20260820000000_remote_compact_persistence"
+
+const makeDb = EffectDrizzleSqlite.makeWithDefaults()
+const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
+  Effect.runPromise(
+    effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+  )
+
+describe("remote compact persistence migration", () => {
+  test("creates the encrypted content table and the mode columns, and stays idempotent", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+        expect(remoteCompactPersistence.id).toBe(migrationID)
+
+        // Seed a historical compaction_run BEFORE the migration: it must read back
+        // as the 'local_summary' default afterwards.
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-remote-compact', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES (
+            'session-remote-compact', 'project-remote-compact', 'remote-compact', '/repo',
+            'Remote compact', '1', 0, 1, 1
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO compaction_run (
+            run_id, session_id, from_prompt_epoch, "trigger", state, created_at,
+            source_window_id, source_effective_history_hash, source_message_count, source_projection_version
+          ) VALUES (
+            'run-pre-remote-compact', 'session-remote-compact', 1, 'manual', 'committed', 1,
+            'window-1', 'hash-1', 3, 0
+          )
+        `)
+
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistence])
+
+        // Gap 1: the blob table exists with the documented shape.
+        const tableCheck = yield* db.get<{ sql: string }>(
+          `SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'session_compaction_encrypted_content'`,
+        )
+        expect(tableCheck).toBeDefined()
+        const tableSql = tableCheck!.sql.replace(/\s+/g, " ")
+        expect(tableSql).toContain("session_id TEXT NOT NULL PRIMARY KEY REFERENCES session(id) ON DELETE CASCADE")
+        expect(tableSql).toContain("encrypted_content TEXT NOT NULL")
+        expect(tableSql).toContain("provider_id TEXT NOT NULL")
+
+        const columns = yield* db.all<{ name: string }>(`PRAGMA table_info(session_compaction_encrypted_content)`)
+        expect(columns.map((column) => column.name).sort()).toEqual(
+          ["created_at", "encrypted_content", "model_id", "provider_id", "session_id", "source_run_id", "updated_at"].sort(),
+        )
+
+        // Gap 2: the two mode columns land on compaction_run.
+        const runColumns = yield* db.all<{ name: string; dflt_value: string | null }>(
+          `PRAGMA table_info(compaction_run)`,
+        )
+        const modeColumn = runColumns.find((column) => column.name === "compaction_mode")
+        expect(modeColumn).toBeDefined()
+        expect(modeColumn!.dflt_value).toBe("'local_summary'")
+        expect(runColumns.some((column) => column.name === "encrypted_content_session")).toBe(true)
+
+        // Historical rows read back as local_summary with no blob pointer.
+        expect(
+          yield* db.get(`
+            SELECT compaction_mode, encrypted_content_session
+            FROM compaction_run WHERE run_id = 'run-pre-remote-compact'
+          `),
+        ).toEqual({ compaction_mode: "local_summary", encrypted_content_session: null })
+
+        // The CHECK constraint rejects unknown modes.
+        const rejectedMode = yield* db
+          .run(`UPDATE compaction_run SET compaction_mode = 'hybrid' WHERE run_id = 'run-pre-remote-compact'`)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(rejectedMode)).toBe(true)
+
+        // Blob rows are keyed by session and enforce uniqueness (latest-wins is an
+        // upsert at the write site, not duplicate rows).
+        yield* db.run(`
+          INSERT INTO session_compaction_encrypted_content (
+            session_id, encrypted_content, provider_id, model_id, source_run_id, created_at, updated_at
+          ) VALUES ('session-remote-compact', 'blob-v1', 'openai', 'gpt-x', 'run-pre-remote-compact', 1, 1)
+        `)
+        const duplicate = yield* db
+          .run(`
+            INSERT INTO session_compaction_encrypted_content (
+              session_id, encrypted_content, provider_id, model_id, source_run_id, created_at, updated_at
+            ) VALUES ('session-remote-compact', 'blob-v2', 'openai', 'gpt-x', 'run-pre-remote-compact', 2, 2)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(duplicate)).toBe(true)
+
+        // Session deletion cascades the blob row.
+        yield* db.run(`DELETE FROM session WHERE id = 'session-remote-compact'`)
+        expect(
+          yield* db.get(`SELECT count(*) AS count FROM session_compaction_encrypted_content`),
+        ).toEqual({ count: 0 })
+        expect(yield* db.all(`PRAGMA foreign_key_check`)).toEqual([])
+
+        // Forward-only idempotence: reapplying is a tracked no-op.
+        const before = yield* db.get<{ count: number }>(`SELECT count(*) AS count FROM migration`)
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistence])
+        expect(yield* db.get(`SELECT count(*) AS count FROM migration`)).toEqual(before)
+      }),
+    )
+  })
+
+  test("rebuilt authority trigger admits remote commits without a TEXT summary and keeps local binding strict", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistence])
+
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-trigger-check', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES (
+            'session-trigger-check', 'project-trigger-check', 'trigger-check', '/repo',
+            'Trigger check', '1', 0, 1, 1
+          )
+        `)
+        const seedRun = (runID: string) =>
+          db.run(`
+            INSERT INTO compaction_run (
+              run_id, session_id, from_prompt_epoch, "trigger", state, created_at,
+              source_window_id, source_effective_history_hash, source_message_count, source_projection_version
+            ) VALUES (
+              '${runID}', 'session-trigger-check', 1, 'manual', 'requested', 1,
+              'window-1', 'hash-1', 3, 0
+            )
+          `)
+
+        // Remote mode: requested → summarizing → committed succeeds with
+        // summary_text NULL, gated only on the encrypted_content pointer.
+        yield* seedRun("run-remote-ok")
+        yield* db.run(`UPDATE compaction_run SET state = 'summarizing' WHERE run_id = 'run-remote-ok'`)
+        yield* db.run(`
+          UPDATE compaction_run
+          SET state = 'committed', compaction_mode = 'remote_compact',
+              encrypted_content_session = 'session-trigger-check',
+              completion_reason = 'manual', committed_at = 2
+          WHERE run_id = 'run-remote-ok'
+        `)
+        expect(
+          yield* db.get(`SELECT state, summary_text FROM compaction_run WHERE run_id = 'run-remote-ok'`),
+        ).toEqual({ state: "committed", summary_text: null })
+
+        // Remote mode without the blob pointer still fails the binding check.
+        yield* seedRun("run-remote-no-pointer")
+        yield* db.run(`UPDATE compaction_run SET state = 'summarizing' WHERE run_id = 'run-remote-no-pointer'`)
+        const noPointer = yield* db
+          .run(`
+            UPDATE compaction_run
+            SET state = 'committed', compaction_mode = 'remote_compact',
+                completion_reason = 'manual', committed_at = 2
+            WHERE run_id = 'run-remote-no-pointer'
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(noPointer)).toBe(true)
+        // Terminate the stuck run so the next seed passes the single-active-run check.
+        yield* db.run(`
+          UPDATE compaction_run SET state = 'failed', terminal_failure_kind = 'test'
+          WHERE run_id = 'run-remote-no-pointer'
+        `)
+
+        // Local mode keeps the strict TEXT-summary binding (zero regression).
+        yield* seedRun("run-local-no-summary")
+        yield* db.run(`UPDATE compaction_run SET state = 'summarizing' WHERE run_id = 'run-local-no-summary'`)
+        const localNoSummary = yield* db
+          .run(`
+            UPDATE compaction_run
+            SET state = 'committed', completion_reason = 'manual', committed_at = 2
+            WHERE run_id = 'run-local-no-summary'
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(localNoSummary)).toBe(true)
+        yield* db.run(`
+          UPDATE compaction_run SET state = 'failed', terminal_failure_kind = 'test'
+          WHERE run_id = 'run-local-no-summary'
+        `)
+
+        // The state machine itself is unchanged: skipping summarizing is rejected.
+        yield* seedRun("run-skip-state")
+        const skip = yield* db
+          .run(`
+            UPDATE compaction_run
+            SET state = 'committed', compaction_mode = 'remote_compact',
+                encrypted_content_session = 'session-trigger-check',
+                completion_reason = 'manual', committed_at = 2
+            WHERE run_id = 'run-skip-state'
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(skip)).toBe(true)
+      }),
+    )
+  })
+
+  test("blob row FK rejects unknown sessions", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistence])
+
+        const rejected = yield* db
+          .run(`
+            INSERT INTO session_compaction_encrypted_content (
+              session_id, encrypted_content, provider_id, model_id, source_run_id, created_at, updated_at
+            ) VALUES ('session-missing', 'blob', 'openai', NULL, NULL, 1, 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(rejected)).toBe(true)
+      }),
+    )
+  })
+})
diff --git a/packages/core/test/session-context-reconciliation.test.ts b/packages/core/test/session-context-reconciliation.test.ts
new file mode 100644
index 00000000..bd8d41e0
--- /dev/null
+++ b/packages/core/test/session-context-reconciliation.test.ts
@@ -0,0 +1,322 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { sql } from "drizzle-orm"
+import { Effect, Exit } from "effect"
+import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
+import { Database } from "../src/database/database"
+import { DatabaseMigration } from "../src/database/migration"
+import receiptActivePackSetMigration from "../src/database/migration/20260816080000_receipt_active_pack_set_attribution"
+import reconciliationMigration from "../src/database/migration/20260816081000_session_context_reconciliation"
+import { ContextReconciliation } from "../src/context-federation/reconciliation"
+
+const sessionId = "reconciliation-session"
+const activityId = "reconciliation-activity"
+const projectionRefs = [
+  { graph: "knowledge" as const, entityId: "doc-a", revision: "rev-1" },
+  { graph: "memory" as const, entityId: "mem-b", revision: "rev-2" },
+  { graph: "code" as const, entityId: "file-c", revision: "rev-3" },
+]
+
+describe("context reconciliation pure functions", () => {
+  test("refKeys sorts and de-duplicates; fingerprint is order and duplicate insensitive", () => {
+    const reversed = [...projectionRefs].reverse()
+    expect(ContextReconciliation.refKeys(projectionRefs)).toEqual(ContextReconciliation.refKeys(reversed))
+    expect(ContextReconciliation.refsFingerprint(projectionRefs)).toEqual(
+      ContextReconciliation.refsFingerprint([...projectionRefs, projectionRefs[0]!]),
+    )
+    expect(ContextReconciliation.duplicateCount(projectionRefs)).toBe(0)
+    expect(ContextReconciliation.duplicateCount([...projectionRefs, projectionRefs[0]!])).toBe(1)
+  })
+
+  test("diffRefKeys partitions two ref key sets", () => {
+    const diff = ContextReconciliation.diffRefKeys(["a", "b"], ["b", "c"])
+    expect(diff).toEqual({ onlyInA: ["a"], onlyInB: ["c"], sharedCount: 1 })
+  })
+
+  test("evaluate without legacy refs records projection-internal consistency", () => {
+    const evaluated = ContextReconciliation.evaluate({ projectionRefs })
+    expect(evaluated.outcome).toBe("legacy_unavailable_projection_consistent")
+    expect(evaluated.legacyFingerprint).toBeUndefined()
+    expect(evaluated.diffSummary.mode).toBe("projection_internal")
+    expect(evaluated.diffSummary.refCount).toBe(3)
+    expect(evaluated.diffSummary.duplicateCount).toBe(0)
+    expect(evaluated.diffSummary.perGraph).toEqual({ knowledge: 1, memory: 1, code: 1 })
+
+    const duplicated = ContextReconciliation.evaluate({ projectionRefs: [...projectionRefs, projectionRefs[0]!] })
+    expect(duplicated.outcome).toBe("legacy_unavailable_projection_duplicate_refs")
+    expect(duplicated.diffSummary.duplicateCount).toBe(1)
+  })
+
+  test("evaluate with legacy refs reports match and mismatch with the diff partition", () => {
+    const match = ContextReconciliation.evaluate({ projectionRefs, legacyRefs: [...projectionRefs].reverse() })
+    expect(match.outcome).toBe("legacy_match")
+    expect(match.legacyFingerprint).toBe(ContextReconciliation.refsFingerprint(projectionRefs))
+    expect(match.diffSummary.mode).toBe("legacy_vs_projection")
+
+    const mismatch = ContextReconciliation.evaluate({
+      projectionRefs,
+      legacyRefs: [
+        projectionRefs[0]!,
+        { graph: "knowledge" as const, entityId: "doc-legacy-only", revision: "rev-9" },
+      ],
+    })
+    expect(mismatch.outcome).toBe("legacy_mismatch")
+    expect(mismatch.diffSummary.legacy).toEqual({
+      refCount: 2,
+      onlyInLegacy: ["knowledge:doc-legacy-only:rev-9"],
+      onlyInProjection: ["code:file-c:rev-3", "memory:mem-b:rev-2"],
+      sharedCount: 1,
+    })
+  })
+})
+
+describe("context reconciliation durable record", () => {
+  test("writes one idempotent row per federated turn receipt", async () => {
+    await runCurrent(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seedSession(db)
+        const input = {
+          sessionId,
+          activityId,
+          turnReceiptId: "receipt-turn-1",
+          selectionId: "selection-1",
+          projectionRefs,
+          now: 42,
+        }
+        yield* ContextReconciliation.record(db, input)
+        yield* ContextReconciliation.record(db, input)
+
+        const rows = yield* db.all<{
+          reconciliation_id: string
+          session_id: string
+          activity_id: string
+          turn_receipt_id: string
+          selection_id: string
+          legacy_refs_fingerprint: string | null
+          projection_refs_fingerprint: string
+          outcome: string
+          diff_summary: string
+          created_at: number
+        }>(sql`SELECT * FROM session_context_reconciliation`)
+        expect(rows.length).toBe(1)
+        const row = rows[0]!
+        expect(row.reconciliation_id).toBe(ContextReconciliation.reconciliationId("receipt-turn-1"))
+        expect(row.session_id).toBe(sessionId)
+        expect(row.activity_id).toBe(activityId)
+        expect(row.turn_receipt_id).toBe("receipt-turn-1")
+        expect(row.selection_id).toBe("selection-1")
+        expect(row.legacy_refs_fingerprint).toBeNull()
+        expect(row.projection_refs_fingerprint).toBe(ContextReconciliation.refsFingerprint(projectionRefs))
+        expect(row.outcome).toBe("legacy_unavailable_projection_consistent")
+        expect(JSON.parse(row.diff_summary).mode).toBe("projection_internal")
+        expect(row.created_at).toBe(42)
+
+        const secondTurn = yield* ContextReconciliation.record(db, {
+          ...input,
+          turnReceiptId: "receipt-turn-2",
+          projectionRefs: [projectionRefs[0]!],
+          now: 43,
+        })
+        expect(secondTurn.outcome).toBe("legacy_unavailable_projection_consistent")
+        expect((yield* db.all(sql`SELECT reconciliation_id FROM session_context_reconciliation`)).length).toBe(2)
+      }),
+    )
+  })
+
+  test("records the legacy fingerprint when legacy refs are provided", async () => {
+    await runCurrent(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seedSession(db)
+        yield* ContextReconciliation.record(db, {
+          sessionId,
+          activityId,
+          turnReceiptId: "receipt-turn-legacy",
+          projectionRefs,
+          legacyRefs: projectionRefs,
+        })
+        expect(yield* db.get(sql`
+          SELECT legacy_refs_fingerprint, projection_refs_fingerprint, outcome
+          FROM session_context_reconciliation
+          WHERE turn_receipt_id = 'receipt-turn-legacy'
+        `)).toEqual({
+          legacy_refs_fingerprint: ContextReconciliation.refsFingerprint(projectionRefs),
+          projection_refs_fingerprint: ContextReconciliation.refsFingerprint(projectionRefs),
+          outcome: "legacy_match",
+        })
+      }),
+    )
+  })
+
+  test("fresh schema exposes the reconciliation table, indexes, and the receipt attribution column", async () => {
+    await runCurrent(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        expect(
+          (yield* db.all<{ name: string }>(sql`
+            SELECT name FROM pragma_table_info('session_context_reconciliation')
+          `)).map((column) => column.name),
+        ).toEqual([
+          "reconciliation_id",
+          "session_id",
+          "activity_id",
+          "turn_receipt_id",
+          "selection_id",
+          "legacy_refs_fingerprint",
+          "projection_refs_fingerprint",
+          "outcome",
+          "diff_summary",
+          "created_at",
+        ])
+        expect(
+          (yield* db.all<{ name: string; unique: number }>(sql`
+            SELECT name, "unique"
+            FROM pragma_index_list('session_context_reconciliation')
+            WHERE name NOT LIKE 'sqlite_%'
+            ORDER BY name
+          `)).map((index) => index),
+        ).toEqual([
+          { name: "session_context_reconciliation_receipt_idx", unique: 1 },
+          { name: "session_context_reconciliation_session_idx", unique: 0 },
+        ])
+        expect(
+          (yield* db.all<{ name: string }>(sql`
+            SELECT name FROM pragma_table_info('session_tool_request_receipt')
+          `)).map((column) => column.name),
+        ).toEqual(expect.arrayContaining(["context_active_pack_set_snapshot_id"]))
+        expect(
+          yield* db.all<{ name: string; partial: number }>(sql`
+            SELECT name, partial
+            FROM pragma_index_list('session_tool_request_receipt')
+            WHERE name = 'session_tool_request_receipt_active_pack_set_idx'
+          `),
+        ).toEqual([{ name: "session_tool_request_receipt_active_pack_set_idx", partial: 1 }])
+      }),
+    )
+  })
+})
+
+describe("FEAT-007 migrations upgrade a historical schema", () => {
+  test("adds the attribution column and reconciliation table without touching existing rows", async () => {
+    await runRaw(
+      Effect.gen(function* () {
+        const db = yield* EffectDrizzleSqlite.makeWithDefaults()
+        yield* db.run(sql`
+          CREATE TABLE session (id TEXT PRIMARY KEY)
+        `)
+        yield* db.run(sql`
+          CREATE TABLE session_activity (activity_id TEXT PRIMARY KEY, session_id TEXT)
+        `)
+        yield* db.run(sql`
+          CREATE TABLE session_tool_request_receipt (
+            receipt_id TEXT PRIMARY KEY,
+            session_id TEXT,
+            provider_state TEXT
+          )
+        `)
+        yield* db.run(sql`
+          INSERT INTO session_tool_request_receipt (receipt_id, session_id, provider_state)
+          VALUES ('historical-receipt', 'historical-session', 'prepared')
+        `)
+
+        yield* DatabaseMigration.applyOnly(db, [receiptActivePackSetMigration, reconciliationMigration])
+
+        expect(
+          (yield* db.all<{ name: string }>(sql`
+            SELECT name FROM pragma_table_info('session_tool_request_receipt')
+          `)).map((column) => column.name),
+        ).toEqual(expect.arrayContaining(["context_active_pack_set_snapshot_id"]))
+        expect(
+          yield* db.get(sql`
+            SELECT context_active_pack_set_snapshot_id FROM session_tool_request_receipt
+            WHERE receipt_id = 'historical-receipt'
+          `),
+        ).toEqual({ context_active_pack_set_snapshot_id: null })
+
+        const invalid = yield* db
+          .run(sql`
+            UPDATE session_tool_request_receipt
+            SET context_active_pack_set_snapshot_id = 'not-a-pack-snapshot'
+            WHERE receipt_id = 'historical-receipt'
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(invalid)).toBe(true)
+        yield* db.run(sql`
+          UPDATE session_tool_request_receipt
+          SET context_active_pack_set_snapshot_id = 'pack_snapshot:abcdef0123456789'
+          WHERE receipt_id = 'historical-receipt'
+        `)
+        expect(
+          yield* db.get(sql`
+            SELECT context_active_pack_set_snapshot_id FROM session_tool_request_receipt
+            WHERE receipt_id = 'historical-receipt'
+          `),
+        ).toEqual({ context_active_pack_set_snapshot_id: "pack_snapshot:abcdef0123456789" })
+
+        expect(
+          yield* db.get(sql`
+            SELECT name FROM sqlite_master
+            WHERE type = 'table' AND name = 'session_context_reconciliation'
+          `),
+        ).toEqual({ name: "session_context_reconciliation" })
+
+        const malformedFingerprint = yield* db
+          .run(sql`
+            INSERT INTO session_context_reconciliation (
+              reconciliation_id, session_id, activity_id, turn_receipt_id,
+              projection_refs_fingerprint, outcome, diff_summary, created_at
+            ) VALUES ('malformed', 'historical-session', 'historical-activity', 'receipt-x',
+              'short', 'legacy_match', '{}', 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(malformedFingerprint)).toBe(true)
+        const malformedSummary = yield* db
+          .run(sql`
+            INSERT INTO session_context_reconciliation (
+              reconciliation_id, session_id, activity_id, turn_receipt_id,
+              projection_refs_fingerprint, outcome, diff_summary, created_at
+            ) VALUES ('malformed-summary', 'historical-session', 'historical-activity', 'receipt-x',
+              ${"a".repeat(64)}, 'legacy_match', '[]', 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(malformedSummary)).toBe(true)
+      }),
+    )
+  })
+})
+
+function runCurrent<A, E>(effect: Effect.Effect<A, E, Database.Service>) {
+  return Effect.runPromise(effect.pipe(Effect.provide(Database.layerFromPath(":memory:")), Effect.scoped))
+}
+
+function runRaw<A, E>(effect: Effect.Effect<A, E, SqlClientService>) {
+  return Effect.runPromise(
+    effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+  )
+}
+
+type DatabaseClient = Database.Interface["db"]
+
+function seedSession(db: DatabaseClient) {
+  return Effect.gen(function* () {
+    yield* db.run(sql`
+      INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+      VALUES ('reconciliation-project', '/tmp/reconciliation', '[]', 1, 1)
+    `)
+    yield* db.run(sql`
+      INSERT INTO session (id, project_id, slug, directory, title, version, time_created, time_updated)
+      VALUES (${sessionId}, 'reconciliation-project', 'reconciliation-session', '/tmp/reconciliation', 'Reconciliation session', 'test', 1, 1)
+    `)
+    yield* db.run(sql`
+      INSERT INTO session_input (id, session_id, prompt, delivery, admitted_seq, promoted_seq, time_created)
+      VALUES ('reconciliation-input', ${sessionId}, '{"text":"reconciliation"}', 'steer', 0, 0, 1)
+    `)
+    yield* db.run(sql`
+      INSERT INTO session_activity (
+        activity_id, session_id, ordinal, trigger_input_id, delivery, state, created_at
+      ) VALUES (${activityId}, ${sessionId}, 0, 'reconciliation-input', 'steer', 'active', 1)
+    `)
+  })
+}
diff --git a/packages/core/test/session-intent-confirmation-state-migration.test.ts b/packages/core/test/session-intent-confirmation-state-migration.test.ts
new file mode 100644
index 00000000..b6797c41
--- /dev/null
+++ b/packages/core/test/session-intent-confirmation-state-migration.test.ts
@@ -0,0 +1,424 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import { migrations } from "@deepagent-code/core/database/migration.gen"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { Effect, Exit } from "effect"
+import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
+
+const migrationID = "20260819120000_session_intent_confirmation_state"
+const documentedStates = [
+  "preparing",
+  "awaiting_confirmation",
+  "selected",
+  "admitting",
+  "admitted",
+  "canceled",
+  "superseded",
+  "failed",
+] as const
+
+// sha256("[]") — the released-refs fingerprint used by unrelated receipt seeds.
+const emptyReleasedRefsFingerprint = "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945"
+
+const makeDb = EffectDrizzleSqlite.makeWithDefaults()
+const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
+  Effect.runPromise(
+    effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+  )
+
+describe("session intent confirmation state migration", () => {
+  test("enforces the BUG-405-003 state contract on a fresh database and stays idempotent", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        // Mirror the runtime connection (Database.layer enables FK before migrating).
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+
+        const check = yield* db.get<{ sql: string }>(
+          `SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'session_intent'`,
+        )
+        expect(check).toBeDefined()
+        for (const state of documentedStates) expect(check!.sql).toContain(`'${state}'`)
+
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-intent-check', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES (
+            'session-intent-check', 'project-intent-check', 'intent-check', '/repo',
+            'Intent check', '1', 0, 1, 1
+          )
+        `)
+
+        for (const [index, state] of documentedStates.entries()) {
+          yield* db.run(`
+            INSERT INTO session_intent (
+              intent_id, session_id, source, state, time_created, time_updated
+            ) VALUES (
+              'intent-check-${state}', 'session-intent-check', 'composer', '${state}', ${index + 1}, ${index + 1}
+            )
+          `)
+        }
+        expect(
+          yield* db.get(`SELECT count(*) AS count FROM session_intent WHERE session_id = 'session-intent-check'`),
+        ).toEqual({ count: documentedStates.length })
+
+        for (const invalidState of ["awaiting_review", "confirmed", "drafted"]) {
+          const rejected = yield* db
+            .run(`
+              INSERT INTO session_intent (
+                intent_id, session_id, source, state, time_created, time_updated
+              ) VALUES (
+                'intent-check-invalid-${invalidState}', 'session-intent-check', 'composer',
+                '${invalidState}', 1, 1
+              )
+            `)
+            .pipe(Effect.exit)
+          expect(Exit.isFailure(rejected)).toBe(true)
+        }
+        expect(
+          yield* db.get(`SELECT count(*) AS count FROM session_intent WHERE session_id = 'session-intent-check'`),
+        ).toEqual({ count: documentedStates.length })
+
+        const before = yield* db.get<{ count: number }>(`SELECT count(*) AS count FROM migration`)
+        yield* DatabaseMigration.apply(db)
+        expect(yield* db.get(`SELECT count(*) AS count FROM migration`)).toEqual(before)
+        expect(yield* db.all(`PRAGMA foreign_key_check`)).toEqual([])
+      }),
+    )
+  })
+
+  test("preserves durable intent receipts and the legacy activity chain while widening the state CHECK", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        const migrationIndex = migrations.findIndex((migration) => migration.id === migrationID)
+        expect(migrationIndex).toBeGreaterThan(0)
+        yield* DatabaseMigration.applyOnly(db, migrations.slice(0, migrationIndex))
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+
+        // Historical databases predate the widened contract: only the legacy six states exist.
+        const rejectedBefore = yield* db
+          .run(`
+            INSERT INTO session_intent (
+              intent_id, session_id, source, state, time_created, time_updated
+            ) VALUES ('intent-pre-check', 'session-missing', 'composer', 'awaiting_confirmation', 1, 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(rejectedBefore)).toBe(true)
+
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-intent-state', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES (
+            'session-intent-state', 'project-intent-state', 'intent-state', '/repo',
+            'Intent state', '1', 2, 1, 1
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO message (id, session_id, time_created, time_updated, data)
+          VALUES ('message-intent-state', 'session-intent-state', 1, 1, '{}')
+        `)
+        yield* db.run(`
+          INSERT INTO session_provider_owner_lease (owner_token, registered_at, heartbeat_at, lease_expires_at)
+          VALUES (
+            'owner-intent-state',
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 10000
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO context_security_namespace (id, kind, binding_hash, created_at)
+          VALUES ('sec_intent_state', 'implicit_local', 'receipt-namespace-binding', 1)
+        `)
+        yield* db.run(`
+          INSERT INTO context_project_scope_identity (
+            security_namespace_id, project_scope_key, project_kind, project_identity_hash, created_at
+          ) VALUES (
+            'sec_intent_state', 'prjctx_intent_state', 'registered_root', 'receipt-project-identity', 1
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_tool_request_receipt (
+            receipt_id, request_ordinal, session_id, user_message_id, assistant_message_id,
+            provider_id, model_id, registry_tool_ids, permission_filtered_tool_ids,
+            final_offered_tool_ids, call_ids, released_knowledge_security_namespace_id,
+            released_knowledge_project_scope_key, released_knowledge_binding_state,
+            released_knowledge_exact_refs, released_knowledge_exact_refs_fingerprint,
+            owner_token, request_state, created_at
+          ) VALUES (
+            'receipt-intent-state', 1, 'session-intent-state', 'message-intent-state',
+            'message-intent-state', 'provider-test', 'model-test', '[]', '[]', '[]', '[]',
+            'sec_intent_state', 'prjctx_intent_state', 'unavailable', '[]',
+            '${emptyReleasedRefsFingerprint}', 'owner-intent-state', 'dispatched', 1
+          )
+        `)
+
+        for (const [index, state] of ["preparing", "admitting", "canceled", "superseded", "failed"].entries()) {
+          yield* db.run(`
+            INSERT INTO session_intent (
+              intent_id, session_id, source, state, time_created, time_updated
+            ) VALUES (
+              'intent-state-${state}', 'session-intent-state', 'composer', '${state}', ${index + 1}, ${index + 1}
+            )
+          `)
+        }
+        // Admitted intent A backs an active activity with a claimed run.
+        yield* db.run(`
+          INSERT INTO session_intent (
+            intent_id, session_id, source, state, selected_variant, selected_payload_hash,
+            delivery, admitted_message_id, mutation_epoch, execution_mode, execution_state,
+            execution_claim_id, execution_claimed_at, version, time_created, time_selected,
+            time_admitted, time_updated
+          ) VALUES (
+            'intent-state-a', 'session-intent-state', 'composer', 'admitted', 'original',
+            'payload-intent-state-a', 'turn', 'message-intent-state', 3, 'run_now', 'claimed',
+            'run-intent-state-a', 2, 1, 1, 1, 1, 2
+          )
+        `)
+        // Admitted intent B backs an activity settled outside a run (recovery terminal path).
+        yield* db.run(`
+          INSERT INTO session_intent (
+            intent_id, session_id, source, state, selected_variant, selected_payload_hash,
+            delivery, admitted_message_id, mutation_epoch, execution_mode, execution_state,
+            version, time_created, time_selected, time_admitted, time_updated
+          ) VALUES (
+            'intent-state-b', 'session-intent-state', 'intelligence', 'admitted', 'rewritten',
+            'payload-intent-state-b', 'turn', 'message-intent-state', 4, 'run_now', 'pending',
+            1, 1, 1, 1, 2
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_activity_admission (
+            admission_id, session_id, source_kind, legacy_intent_id, admitted_message_id,
+            delivery, payload_fingerprint_kind, payload_fingerprint, created_at, execution_mode
+          ) VALUES (
+            'admission-intent-state-a', 'session-intent-state', 'legacy_intent', 'intent-state-a',
+            'message-intent-state', 'turn', 'payload_hash', 'payload-intent-state-a', 1, 'run_now'
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_activity_admission (
+            admission_id, session_id, source_kind, legacy_intent_id, admitted_message_id,
+            delivery, payload_fingerprint_kind, payload_fingerprint, created_at, execution_mode
+          ) VALUES (
+            'admission-intent-state-b', 'session-intent-state', 'legacy_intent', 'intent-state-b',
+            'message-intent-state', 'turn', 'payload_hash', 'payload-intent-state-b', 1, 'run_now'
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity (
+            activity_id, session_id, ordinal, trigger_admission_id, owner_token,
+            state, terminal_reason, created_at, settled_at
+          ) VALUES (
+            'activity-intent-state-a', 'session-intent-state', 0, 'admission-intent-state-a',
+            'owner-intent-state', 'active', NULL, 1, NULL
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity (
+            activity_id, session_id, ordinal, trigger_admission_id, owner_token,
+            state, terminal_reason, created_at, settled_at
+          ) VALUES (
+            'activity-intent-state-b', 'session-intent-state', 1, 'admission-intent-state-b',
+            'owner-intent-state', 'settled', 'user completed', 1, 3
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity_admission (
+            activity_id, admission_id, ordinal, role, attached_at
+          ) VALUES ('activity-intent-state-a', 'admission-intent-state-a', 0, 'trigger', 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity_admission (
+            activity_id, admission_id, ordinal, role, attached_at
+          ) VALUES ('activity-intent-state-b', 'admission-intent-state-b', 0, 'trigger', 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session_activity_progress (
+            activity_id, revision, assistant_message_id, provider_receipt_id, state,
+            created_at, settled_at, input_membership_ordinal
+          ) VALUES (
+            'activity-intent-state-a', 0, 'message-intent-state', 'receipt-intent-state',
+            'progress', 1, 2, 0
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity_run (
+            run_id, activity_id, session_id, mutation_epoch, generation, owner_token,
+            state, started_at
+          ) VALUES (
+            'run-intent-state-a', 'activity-intent-state-a', 'session-intent-state', 3, 0,
+            'owner-intent-state', 'running', 1
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity_terminal (
+            activity_id, session_id, mutation_epoch, state, reason_code, source,
+            operation_id, membership_ordinal, owner_token, created_at
+          ) VALUES (
+            'activity-intent-state-b', 'session-intent-state', 4, 'settled', 'user completed',
+            'restart_recovery', 'operation-intent-state-b', 0, 'owner-intent-state', 3
+          )
+        `)
+        yield* db.run(`
+          INSERT INTO session_legacy_activity_migration_receipt (
+            receipt_id, batch_id, activity_id, classifier_version, before_state, after_state,
+            evidence_hash, terminal_operation_id, created_at
+          ) VALUES (
+            'receipt-migration-intent-state', 'batch-intent-state', 'activity-intent-state-b',
+            'legacy-terminal-state-v1', 'settled', 'settled', 'evidence-intent-state',
+            'operation-intent-state-b', 3
+          )
+        `)
+
+        const snapshot = {
+          intents: yield* db.all(`SELECT intent_id, state FROM session_intent ORDER BY intent_id`),
+          admissions: yield* db.all(`SELECT admission_id, execution_mode FROM session_activity_admission ORDER BY admission_id`),
+          activities: yield* db.all(`SELECT activity_id, state FROM session_legacy_activity ORDER BY activity_id`),
+          joins: yield* db.all(`SELECT activity_id, role FROM session_legacy_activity_admission ORDER BY activity_id`),
+          progress: yield* db.all(`SELECT activity_id, state FROM session_activity_progress ORDER BY activity_id, revision`),
+          runs: yield* db.all(`SELECT run_id, state FROM session_legacy_activity_run ORDER BY run_id`),
+          terminals: yield* db.all(`SELECT activity_id, state, source FROM session_legacy_activity_terminal ORDER BY activity_id`),
+          receipts: yield* db.all(`SELECT receipt_id, after_state FROM session_legacy_activity_migration_receipt ORDER BY receipt_id`),
+        }
+
+        yield* DatabaseMigration.applyOnly(db, migrations.slice(migrationIndex, migrationIndex + 1))
+        // Apply the migrations registered after the intent rebuild too, so the full-history
+        // re-apply below asserts a true no-op against the current registry.
+        yield* DatabaseMigration.applyOnly(db, migrations.slice(migrationIndex + 1))
+
+        const widenedCheck = yield* db.get<{ sql: string }>(
+          `SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'session_intent'`,
+        )
+        expect(widenedCheck).toBeDefined()
+        expect(widenedCheck!.sql).toContain("'awaiting_confirmation'")
+        expect(widenedCheck!.sql).toContain("'selected'")
+
+        expect(yield* db.all(`SELECT intent_id, state FROM session_intent ORDER BY intent_id`)).toEqual(
+          snapshot.intents,
+        )
+        expect(
+          yield* db.all(`SELECT admission_id, execution_mode FROM session_activity_admission ORDER BY admission_id`),
+        ).toEqual(snapshot.admissions)
+        expect(yield* db.all(`SELECT activity_id, state FROM session_legacy_activity ORDER BY activity_id`)).toEqual(
+          snapshot.activities,
+        )
+        expect(
+          yield* db.all(`SELECT activity_id, role FROM session_legacy_activity_admission ORDER BY activity_id`),
+        ).toEqual(snapshot.joins)
+        expect(
+          yield* db.all(`SELECT activity_id, state FROM session_activity_progress ORDER BY activity_id, revision`),
+        ).toEqual(snapshot.progress)
+        expect(yield* db.all(`SELECT run_id, state FROM session_legacy_activity_run ORDER BY run_id`)).toEqual(
+          snapshot.runs,
+        )
+        expect(
+          yield* db.all(`SELECT activity_id, state, source FROM session_legacy_activity_terminal ORDER BY activity_id`),
+        ).toEqual(snapshot.terminals)
+        expect(
+          yield* db.all(
+            `SELECT receipt_id, after_state FROM session_legacy_activity_migration_receipt ORDER BY receipt_id`,
+          ),
+        ).toEqual(snapshot.receipts)
+        expect(
+          yield* db.get(`
+            SELECT execution_claim_id, selected_payload_hash, mutation_epoch
+            FROM session_intent WHERE intent_id = 'intent-state-a'
+          `),
+        ).toEqual({
+          execution_claim_id: "run-intent-state-a",
+          selected_payload_hash: "payload-intent-state-a",
+          mutation_epoch: 3,
+        })
+
+        expect(
+          yield* db.all(`
+            SELECT name FROM sqlite_master
+            WHERE type = 'trigger' AND name IN (
+              'session_intent_execution_validate_insert',
+              'session_intent_execution_validate_update',
+              'session_activity_admission_validate_insert',
+              'session_activity_admission_immutable',
+              'session_activity_admission_execution_mode_validate_insert',
+              'session_legacy_activity_legal_update',
+              'session_legacy_activity_objective_insert',
+              'session_legacy_activity_objective_terminal_projection',
+              'session_legacy_activity_permission_effect_terminal_guard',
+              'session_legacy_activity_admission_validate_insert',
+              'session_legacy_activity_admission_immutable',
+              'session_activity_progress_validate_insert',
+              'session_activity_progress_legal_update',
+              'session_legacy_activity_run_validate_insert',
+              'session_legacy_activity_run_legal_update',
+              'session_legacy_activity_terminal_validate_insert',
+              'session_legacy_activity_terminal_immutable_update',
+              'session_legacy_activity_terminal_immutable_delete',
+              'session_legacy_activity_migration_receipt_immutable_update',
+              'session_legacy_activity_migration_receipt_immutable_delete'
+            )
+            ORDER BY name
+          `),
+        ).toHaveLength(20)
+        expect(
+          yield* db.all(`
+            SELECT name FROM sqlite_master
+            WHERE type = 'index' AND name IN (
+              'session_intent_session_state_idx',
+              'session_legacy_activity_active_idx',
+              'session_legacy_activity_run_generation_idx',
+              'session_legacy_activity_live_run_idx',
+              'session_legacy_activity_terminal_operation_idx',
+              'session_legacy_activity_migration_batch_idx',
+              'session_legacy_activity_migration_terminal_idx'
+            )
+            ORDER BY name
+          `),
+        ).toHaveLength(7)
+        expect(yield* db.all(`PRAGMA foreign_key_check`)).toEqual([])
+
+        // The widened contract now accepts the confirmation window and the CAS selection.
+        yield* db.run(`
+          INSERT INTO session_intent (
+            intent_id, session_id, source, state, time_created, time_updated
+          ) VALUES ('intent-state-confirm', 'session-intent-state', 'intelligence', 'awaiting_confirmation', 9, 9)
+        `)
+        yield* db.run(`
+          INSERT INTO session_intent (
+            intent_id, session_id, source, state, selected_variant, selected_payload_hash,
+            time_created, time_selected, time_updated
+          ) VALUES (
+            'intent-state-selected', 'session-intent-state', 'intelligence', 'selected', 'rewritten',
+            'payload-intent-state-selected', 9, 9, 9
+          )
+        `)
+        const rejectedAfter = yield* db
+          .run(`
+            INSERT INTO session_intent (
+              intent_id, session_id, source, state, time_created, time_updated
+            ) VALUES ('intent-state-invalid', 'session-intent-state', 'composer', 'awaiting_review', 1, 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(rejectedAfter)).toBe(true)
+
+        // Reapplying the tracked history must remain a no-op (forward-only, idempotent).
+        const before = yield* db.get<{ count: number }>(`SELECT count(*) AS count FROM migration`)
+        yield* DatabaseMigration.apply(db)
+        expect(yield* db.get(`SELECT count(*) AS count FROM migration`)).toEqual(before)
+        expect(yield* db.all(`SELECT intent_id, state FROM session_intent ORDER BY intent_id`)).not.toEqual(
+          snapshot.intents,
+        )
+      }),
+    )
+  })
+})
diff --git a/packages/core/test/turn-stage-evidence-migration.test.ts b/packages/core/test/turn-stage-evidence-migration.test.ts
new file mode 100644
index 00000000..54f87d8c
--- /dev/null
+++ b/packages/core/test/turn-stage-evidence-migration.test.ts
@@ -0,0 +1,116 @@
+import { describe, expect, test } from "bun:test"
+import { SqliteClient } from "@effect/sql-sqlite-bun"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import { migrations } from "@deepagent-code/core/database/migration.gen"
+import turnStageEvidenceMigration from "@deepagent-code/core/database/migration/20260820120000_session_turn_stage_evidence"
+import { EffectDrizzleSqlite } from "@deepagent-code/effect-drizzle-sqlite"
+import { Effect, Exit } from "effect"
+import type { SqlClient as SqlClientService } from "effect/unstable/sql/SqlClient"
+
+const documentedStages = [
+  "activity_claimed",
+  "snapshot_started",
+  "snapshot_finished",
+  "snapshot_degraded",
+  "history_loaded",
+  "request_prepared",
+  "provider_dispatch_started",
+  "terminal_settled",
+] as const
+
+const makeDb = EffectDrizzleSqlite.makeWithDefaults()
+const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
+  Effect.runPromise(
+    effect.pipe(Effect.provide(SqliteClient.layer({ filename: ":memory:", disableWAL: true })), Effect.scoped),
+  )
+
+describe("session turn stage evidence migration", () => {
+  test("creates the BUG-407-012 gap C evidence table with the documented stage contract", async () => {
+    await run(
+      Effect.gen(function* () {
+        const db = yield* makeDb
+        // Mirror the runtime connection (Database.layer enables FK before migrating).
+        yield* db.run(`PRAGMA foreign_keys = ON`)
+        yield* DatabaseMigration.apply(db)
+        yield* DatabaseMigration.applyOnly(db, [turnStageEvidenceMigration])
+
+        const check = yield* db.get<{ sql: string }>(
+          `SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'session_turn_stage_evidence'`,
+        )
+        expect(check).toBeDefined()
+        for (const stage of documentedStages) expect(check!.sql).toContain(`'${stage}'`)
+        expect(check!.sql).toContain(`PRIMARY KEY (session_id, activity_id)`)
+        expect(check!.sql).toContain(`REFERENCES session(id) ON DELETE CASCADE`)
+
+        // One row per (session_id, activity_id).
+        const duplicate = yield* db
+          .run(`
+            INSERT INTO session_turn_stage_evidence (session_id, activity_id, stage, stage_at, updated_at)
+            VALUES ('session-missing', 'activity-dup', 'activity_claimed', 1, 1)
+          `)
+          .pipe(Effect.exit)
+        // FK violation fires first (session row absent) — the PK shape is asserted via sqlite_master above.
+        expect(Exit.isFailure(duplicate)).toBe(true)
+
+        yield* db.run(`
+          INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+          VALUES ('project-stage-evidence', '/repo', '[]', 1, 1)
+        `)
+        yield* db.run(`
+          INSERT INTO session (
+            id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+          ) VALUES (
+            'session-stage-evidence', 'project-stage-evidence', 'stage-evidence', '/repo',
+            'Stage evidence', '1', 0, 1, 1
+          )
+        `)
+
+        for (const [index, stage] of documentedStages.entries()) {
+          yield* db.run(`
+            INSERT INTO session_turn_stage_evidence (session_id, activity_id, stage, stage_at, updated_at)
+            VALUES ('session-stage-evidence', 'activity-${stage}', '${stage}', ${index + 1}, ${index + 1})
+          `)
+        }
+        expect(
+          yield* db.get(
+            `SELECT count(*) AS count FROM session_turn_stage_evidence WHERE session_id = 'session-stage-evidence'`,
+          ),
+        ).toEqual({ count: documentedStages.length })
+
+        const invalidStage = yield* db
+          .run(`
+            INSERT INTO session_turn_stage_evidence (session_id, activity_id, stage, stage_at, updated_at)
+            VALUES ('session-stage-evidence', 'activity-invalid', 'dispatched', 1, 1)
+          `)
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(invalidStage)).toBe(true)
+
+        // ON DELETE CASCADE: deleting the session removes its stage evidence.
+        yield* db.run(`DELETE FROM session WHERE id = 'session-stage-evidence'`)
+        expect(
+          yield* db.get(
+            `SELECT count(*) AS count FROM session_turn_stage_evidence WHERE session_id = 'session-stage-evidence'`,
+          ),
+        ).toEqual({ count: 0 })
+
+        const indexRow = yield* db.get<{ name: string }>(
+          `SELECT name FROM sqlite_master WHERE type = 'index' AND name = 'session_turn_stage_evidence_session_idx'`,
+        )
+        expect(indexRow).toBeDefined()
+
+        // Idempotent replay + clean FK graph.
+        const before = yield* db.get<{ count: number }>(`SELECT count(*) AS count FROM migration`)
+        yield* DatabaseMigration.applyOnly(db, [turnStageEvidenceMigration])
+        expect(yield* db.get(`SELECT count(*) AS count FROM migration`)).toEqual(before)
+        expect(yield* db.all(`PRAGMA foreign_key_check`)).toEqual([])
+      }),
+    )
+  })
+
+  test("orders after every migration registered before it", async () => {
+    const index = migrations.findIndex((registered) => registered.id === turnStageEvidenceMigration.id)
+    for (const registered of migrations.slice(0, index)) {
+      expect(turnStageEvidenceMigration.id > registered.id).toBe(true)
+    }
+  })
+})
diff --git a/packages/deepagent-code/script/live-llm/providers.ts b/packages/deepagent-code/script/live-llm/providers.ts
new file mode 100644
index 00000000..6236ea2b
--- /dev/null
+++ b/packages/deepagent-code/script/live-llm/providers.ts
@@ -0,0 +1,165 @@
+/**
+ * Provider matrix for the live LLM all-tests runner (script/run-live-llm-all.ts).
+ *
+ * Endpoint allowlisting stays fail-closed: only providers registered here, or endpoints
+ * explicitly appended through DEEPAGENT_CODE_LIVE_LLM_ALLOWED_ENDPOINTS, are accepted.
+ */
+
+export type LiveLLMProviderEndpoint = {
+  /** Canonical base URL for the provider, e.g. https://api.deepseek.com */
+  baseURL: string
+  /** Additional official aliases for the same provider (e.g. the China endpoint). */
+  aliases?: ReadonlyArray<string>
+}
+
+export type LiveLLMProvider = {
+  /** Stable provider identifier used for fingerprints and key file naming. */
+  id: string
+  /** Human-readable provider label for error messages and logs. */
+  label: string
+  endpoints: ReadonlyArray<LiveLLMProviderEndpoint>
+}
+
+/** Environment variable that appends custom allowed endpoints to the fail-closed allowlist. */
+export const LIVE_LLM_ALLOWED_ENDPOINTS_ENV = "DEEPAGENT_CODE_LIVE_LLM_ALLOWED_ENDPOINTS"
+
+/**
+ * Official provider registry. IDs follow the models.dev-style identifiers used by the
+ * repository models snapshot (deepseek / moonshotai / zai / openai); labels keep the
+ * product names (Kimi, GLM) that the evidence chain reports.
+ */
+export const liveLLMProviders: ReadonlyArray<LiveLLMProvider> = [
+  {
+    id: "deepseek",
+    label: "DeepSeek",
+    endpoints: [{ baseURL: "https://api.deepseek.com" }],
+  },
+  {
+    id: "moonshotai",
+    label: "Kimi (Moonshot)",
+    endpoints: [
+      { baseURL: "https://api.moonshot.ai/v1" },
+      { baseURL: "https://api.moonshot.cn/v1" },
+    ],
+  },
+  {
+    id: "zai",
+    label: "GLM (Zhipu / Z.AI)",
+    endpoints: [
+      { baseURL: "https://api.z.ai/api/paas/v4" },
+      { baseURL: "https://open.bigmodel.cn/api/paas/v4" },
+    ],
+  },
+  {
+    id: "openai",
+    label: "OpenAI",
+    endpoints: [{ baseURL: "https://api.openai.com/v1" }],
+  },
+]
+
+/** A resolved provider: either a registered provider or an explicitly allowed custom endpoint. */
+export type ResolvedLiveLLMProvider = {
+  id: string
+  label: string
+  /** Normalized base URL (no trailing slash) that was matched. */
+  baseURL: string
+  registered: boolean
+}
+
+/** Recommended chmod 600 key file location for a provider, derived from its identifier. */
+export function recommendedLiveLLMKeyFile(providerID: string) {
+  return `~/.deepagent/code/tmp/live-llm-${providerID}.key`
+}
+
+/** Normalizes a base URL: requires https, lowercased hostname, no trailing slash. */
+export function normalizeLiveLLMEndpoint(baseURL: string) {
+  if (!URL.canParse(baseURL)) throw new Error("baseURL must be a valid URL")
+  const url = new URL(baseURL)
+  if (url.protocol !== "https:") {
+    throw new Error(`Live LLM endpoints must use https, received ${baseURL}`)
+  }
+  return `${url.origin}${url.pathname.replace(/\/$/, "")}`
+}
+
+/** Matches a base URL against the built-in official provider registry only. */
+export function matchRegisteredLiveLLMProvider(baseURL: string): ResolvedLiveLLMProvider | undefined {
+  const normalized = normalizeLiveLLMEndpoint(baseURL)
+  for (const provider of liveLLMProviders) {
+    for (const endpoint of provider.endpoints) {
+      for (const candidate of [endpoint.baseURL, ...(endpoint.aliases ?? [])]) {
+        if (normalizeLiveLLMEndpoint(candidate) === normalized) {
+          return { id: provider.id, label: provider.label, baseURL: normalized, registered: true }
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Parses DEEPAGENT_CODE_LIVE_LLM_ALLOWED_ENDPOINTS entries.
+ *
+ * Entries are comma- or whitespace-separated; each entry is either `https://host[/path]`
+ * or `provider-id@https://host[/path]` when the fingerprint identifier should not be
+ * derived from the hostname.
+ */
+export function parseCustomAllowedEndpoints(raw: string | undefined): Array<{ id?: string; baseURL: string }> {
+  if (!raw?.trim()) return []
+  return raw.split(/[\s,]+/).flatMap((entry) => {
+    const trimmed = entry.trim()
+    if (!trimmed) return []
+    const separator = trimmed.indexOf("@")
+    const idPart = separator === -1 ? undefined : trimmed.slice(0, separator)
+    const urlPart = separator === -1 ? trimmed : trimmed.slice(separator + 1)
+    const id = idPart?.trim()
+    if (id && !/^[a-z0-9][a-z0-9_-]*$/.test(id)) {
+      throw new Error(
+        `${LIVE_LLM_ALLOWED_ENDPOINTS_ENV} provider id "${id}" must match /^[a-z0-9][a-z0-9_-]*$/`,
+      )
+    }
+    if (!URL.canParse(urlPart)) {
+      throw new Error(`${LIVE_LLM_ALLOWED_ENDPOINTS_ENV} contains an invalid URL: ${urlPart}`)
+    }
+    return [{ ...(id ? { id } : {}), baseURL: urlPart }]
+  })
+}
+
+function customProviderID(baseURL: string) {
+  const hostname = new URL(baseURL).hostname.toLowerCase()
+  const derived = hostname.split(".")[0]?.replace(/[^a-z0-9_-]+/g, "-").replace(/^-+|-+$/g, "")
+  if (!derived || !/^[a-z0-9]/.test(derived)) return "custom"
+  return derived
+}
+
+/**
+ * Resolves the provider for a base URL. Registered providers always win; otherwise the
+ * endpoint is only accepted when explicitly listed in the allowed-endpoints environment
+ * variable (fail-closed). Throws when the endpoint is not allowed.
+ */
+export function resolveLiveLLMProvider(
+  baseURL: string,
+  environment: Readonly<Record<string, string | undefined>> = process.env,
+): ResolvedLiveLLMProvider {
+  const normalized = normalizeLiveLLMEndpoint(baseURL)
+  const registered = matchRegisteredLiveLLMProvider(normalized)
+  if (registered) return registered
+  const custom = parseCustomAllowedEndpoints(environment[LIVE_LLM_ALLOWED_ENDPOINTS_ENV]).find(
+    (entry) => normalizeLiveLLMEndpoint(entry.baseURL) === normalized,
+  )
+  if (custom) {
+    const id = custom.id ?? customProviderID(normalized)
+    return { id, label: id, baseURL: normalized, registered: false }
+  }
+  throw new Error(
+    `Real LLM suites currently require an official provider endpoint; official https://api.deepseek.com ` +
+      `(deepseek) is the historical default, also allowed: ` +
+      `${officialEndpointList()}; extend via ${LIVE_LLM_ALLOWED_ENDPOINTS_ENV}=provider@https://host/path, ` +
+      `received ${baseURL}`,
+  )
+}
+
+/** Comma-separated list of every officially registered endpoint (for error messages). */
+export function officialEndpointList() {
+  return liveLLMProviders
+    .flatMap((provider) => provider.endpoints.map((endpoint) => endpoint.baseURL))
+    .join(", ")
+}
diff --git a/packages/deepagent-code/script/live-llm/routes.ts b/packages/deepagent-code/script/live-llm/routes.ts
index 8fd4ca82..eae9c557 100644
--- a/packages/deepagent-code/script/live-llm/routes.ts
+++ b/packages/deepagent-code/script/live-llm/routes.ts
@@ -683,6 +683,8 @@ export const routeManifest = [
       "packages/deepagent-code/src/session/activity-crash-test.ts",
       "packages/deepagent-code/src/session/activity-owner.ts",
       "packages/deepagent-code/src/session/activity-sql.ts",
+      "packages/deepagent-code/src/session/facade-activity.ts",
+      "packages/deepagent-code/src/tool/activity_facade.ts",
       "packages/deepagent-code/src/session/legacy-provider-resolution.ts",
       "packages/deepagent-code/src/session/processor.ts",
       "packages/deepagent-code/src/session/recovery-transfer-guard.ts",
@@ -691,6 +693,9 @@ export const routeManifest = [
       "packages/deepagent-code/src/session/prompt-intent.ts",
       "packages/deepagent-code/src/session/prompt.ts",
       "packages/deepagent-code/src/session/steer.ts",
+      "packages/deepagent-code/src/session/turn-deadline-watchdog.ts",
+      "packages/deepagent-code/src/session/turn-stage-evidence.sql.ts",
+      "packages/deepagent-code/src/session/turn-stage-evidence.ts",
     ],
     checks: ["live-llm-routes", "prompt-intent", "session-continuation", "ui-runtime"],
     runs: [activityProgressLifecycle, activityProgressRestart, activityProgressPackage, longSession],
@@ -724,6 +729,7 @@ export const routeManifest = [
       "packages/deepagent-code/src/session/steer.ts",
       "packages/deepagent-code/src/session/compaction.ts",
       "packages/deepagent-code/src/session/compaction-sql.ts",
+      "packages/deepagent-code/src/session/remote-compact.ts",
       "packages/deepagent-code/src/session/context-ledger.ts",
       "packages/deepagent-code/src/session/prompt-epoch.ts",
       "packages/deepagent-code/src/session/prompt-epoch.sql.ts",
@@ -767,6 +773,8 @@ export const routeManifest = [
       "packages/deepagent-code/src/session/run-state.ts",
       "packages/deepagent-code/src/session/schema.ts",
       "packages/deepagent-code/src/session/session*.ts",
+      "packages/deepagent-code/src/session/__tests__/snapshot.test.ts",
+      "packages/deepagent-code/src/session/snapshot.ts",
       "packages/deepagent-code/src/session/status.ts",
       "packages/deepagent-code/src/session/summary.ts",
       "packages/deepagent-code/src/session/supervisor-notifier.ts",
diff --git a/packages/deepagent-code/script/models-data.ts b/packages/deepagent-code/script/models-data.ts
index 567d8ea7..78ef9813 100644
--- a/packages/deepagent-code/script/models-data.ts
+++ b/packages/deepagent-code/script/models-data.ts
@@ -24,13 +24,25 @@ export async function loadModelsData(
     return result(configured, configuredFile)
   }
 
-  const modelsURL = (environment.DEEPAGENT_CODE_MODELS_URL?.trim() || "https://models.dev").replace(/\/$/, "")
-  const remote = await fetch(`${modelsURL}/api.json`, {
-    signal: AbortSignal.timeout(options.requestTimeoutMs ?? 10_000),
-  })
-    .then(async (response) => (response.ok ? catalog(await response.json()) : undefined))
-    .catch(() => undefined)
-  if (remote) {
+  // Clean-build policy: DEEPAGENT_CODE_MODELS_URL accepts a comma-separated ordered list of fresh
+  // remote endpoints. Default chain: models.dev (primary) then the Gitee mirror of
+  // deepagent-ltd/models.dev (hourly-synced, reachable from CN networks). Every source must serve
+  // the live catalog; we never fall back to a stale local snapshot — if all endpoints fail, the
+  // build fails closed.
+  const modelsURLs = (
+    environment.DEEPAGENT_CODE_MODELS_URL?.trim() ||
+    "https://models.dev,https://gitee.com/deepagent-ai/models.dev/raw/main"
+  )
+    .split(",")
+    .map((url) => url.trim().replace(/\/$/, ""))
+    .filter((url) => url.length > 0)
+  for (const modelsURL of modelsURLs) {
+    const remote = await fetch(`${modelsURL}/api.json`, {
+      signal: AbortSignal.timeout(options.requestTimeoutMs ?? 10_000),
+    })
+      .then(async (response) => (response.ok ? catalog(await response.json()) : undefined))
+      .catch(() => undefined)
+    if (!remote) continue
     if (options.cacheFile) {
       await persistCatalog(options.cacheFile, remote).catch((error) =>
         console.warn(
@@ -41,7 +53,9 @@ export async function loadModelsData(
     return result(remote, `${modelsURL}/api.json`)
   }
 
-  throw new Error(`Unable to load models.dev catalog from ${modelsURL}; refusing to use a local snapshot`)
+  throw new Error(
+    `Unable to load models.dev catalog from ${modelsURLs.join(", ")}; refusing to use a local snapshot`,
+  )
 }
 
 function result(data: Record<string, unknown>, source: string) {
diff --git a/packages/deepagent-code/script/rel-001-drill.ts b/packages/deepagent-code/script/rel-001-drill.ts
new file mode 100644
index 00000000..ad2b894e
--- /dev/null
+++ b/packages/deepagent-code/script/rel-001-drill.ts
@@ -0,0 +1,215 @@
+#!/usr/bin/env bun
+
+import path from "node:path"
+import { copyFile, stat } from "node:fs/promises"
+import { randomUUID } from "node:crypto"
+import { Effect, Exit, Layer, Ref, Stream } from "effect"
+import { sql } from "drizzle-orm"
+import { Database } from "@deepagent-code/core/database/database"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { BackgroundJob } from "@/background/job"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { Session } from "@/session/session"
+import { SessionLegacyProviderResolution } from "@/session/legacy-provider-resolution"
+import { LLM } from "@/session/llm"
+import { MessageID, SessionID } from "@/session/schema"
+import { EventV2 } from "@deepagent-code/core/event"
+import { ProjectV2 } from "@deepagent-code/core/project"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
+import { InstanceRef } from "@/effect/instance-ref"
+
+// REL-001 release drill (BUG-407-009). Runs against a COPY of the production snapshot only:
+// the source path must contain "drill" (the live database is never opened for writing).
+// Steps: incident state check, 0-provider-invocation abandoned recovery, fork smoke,
+// and a new message write on the original session.
+
+const INCIDENT_SESSIONS = ["ses_00c3f7decfffhjQSy69Q5gSd1S", "ses_0149b8afffffWlu80cVGdzFI9s"]
+const INCIDENT_DIRECTORY = "/Users/xiuranli/code/hygon/vllm"
+const INCIDENT_PROJECT_ID = "6337bf4e27be43039900d3258a454af34b9b62ad"
+
+// The drill boots services directly (no desktop instance), so the fork path gets a minimal
+// instance context matching the incident project rows in the drill database.
+const drillInstanceContext = {
+  directory: INCIDENT_DIRECTORY,
+  worktree: INCIDENT_DIRECTORY,
+  project: {
+    id: ProjectV2.ID.make(INCIDENT_PROJECT_ID),
+    worktree: INCIDENT_DIRECTORY,
+    vcs: "git" as const,
+    time: { created: 1784826016726, updated: 1786691614012 },
+    sandboxes: [],
+  },
+}
+
+const arg = (name: string) => {
+  const index = process.argv.indexOf(name)
+  if (index === -1) return undefined
+  return process.argv[index + 1]
+}
+
+export async function copyForDrill(source: string) {
+  const info = await stat(source)
+  if (!info.isFile()) throw new Error(`drill source is not a file: ${source}`)
+  if (!path.basename(source).includes("drill"))
+    throw new Error(`refusing to drill without a drill copy; source basename must contain "drill": ${source}`)
+  const target = path.join(path.dirname(source), `rel-001-drill-${Date.now()}-${randomUUID().slice(0, 8)}.db`)
+  await copyFile(source, target)
+  return target
+}
+
+type Evidence = { step: string; detail: string }
+
+const evidenceLines: Evidence[] = []
+const evidence = (step: string, detail: string) => {
+  evidenceLines.push({ step, detail })
+  console.log(`REL-001 ${step}: ${detail}`)
+}
+
+const fakeLLM = Layer.effect(
+  LLM.Service,
+  Effect.gen(function* () {
+    const invocations = yield* Ref.make(0)
+    return LLM.Service.of({
+      stream: () =>
+        Stream.unwrap(
+          Effect.gen(function* () {
+            yield* Ref.update(invocations, (n) => n + 1)
+            return Stream.failSync(
+              () => new Error("drill oracle: provider invoked during abandoned recovery — oracle violated"),
+            )
+          }),
+        ),
+    })
+  }),
+)
+
+const layersFor = (database: string) => {
+  // EventV2.defaultLayer bakes Database.defaultLayer (the channel-local DB), so every consumer must
+  // be wired to the drill path explicitly — a merged default provider silently steals the service.
+  const eventV2 = EventV2.layer.pipe(Layer.provide(Database.layerFromPath(database)))
+  const bridge = EventV2Bridge.layer.pipe(Layer.provide(eventV2))
+  // The session projector materializes session.created events into session rows (fork children too).
+  const sessionProjector = SessionProjector.layer.pipe(
+    Layer.provide(eventV2),
+    Layer.provide(Database.layerFromPath(database)),
+  )
+  return Layer.mergeAll(
+    Session.layer.pipe(
+      Layer.provide(BackgroundJob.defaultLayer),
+      Layer.provide(Database.layerFromPath(database)),
+      Layer.provide(bridge),
+      Layer.provide(RuntimeFlags.defaultLayer),
+    ),
+    SessionLegacyProviderResolution.layer.pipe(
+      Layer.provide(Database.layerFromPath(database)),
+      Layer.provide(bridge),
+    ),
+    sessionProjector,
+    eventV2,
+    Database.layerFromPath(database),
+    fakeLLM,
+  )
+}
+
+export function runDrill(database: string) {
+  return Effect.gen(function* () {
+    const { db } = yield* Database.Service
+    const resolution = yield* SessionLegacyProviderResolution.Service
+    const sessions = yield* Session.Service
+
+    for (const sessionID of INCIDENT_SESSIONS) {
+      const history = yield* db
+        .get<{ state: string; reason: string | null }>(sql`SELECT state, reason FROM session_history_state WHERE session_id = ${sessionID}`)
+        .pipe(Effect.orDie)
+      evidence(
+        "incident-state",
+        `${sessionID} history=${history?.state} reason=${history?.reason ?? "n/a"}`,
+      )
+      if (history?.state !== "recovery_required") return yield* Effect.die(`incident session not in recovery state`)
+    }
+
+    for (const sessionID of INCIDENT_SESSIONS) {
+      const descriptors = yield* resolution.describe(SessionID.make(sessionID))
+      evidence("describe", `${sessionID} descriptors=${descriptors.length} supported=${descriptors.filter((d) => d.resolutionSupported).length}`)
+      for (const descriptor of descriptors) {
+        if (!descriptor.resolutionSupported) {
+          evidence(
+            "describe-unsupported",
+            `${sessionID} receipt=${descriptor.receiptID} reasons=${descriptor.unsupportedReasons.join(",")}`,
+          )
+          return yield* Effect.die(`incident receipt is not resolvable: ${descriptor.receiptID}`)
+        }
+        const resolved = yield* resolution.resolve({
+          sessionID: SessionID.make(sessionID),
+          commandID: `rel-001-drill-${randomUUID().slice(0, 8)}`,
+          receiptID: descriptor.receiptID,
+          decision: "abandoned",
+          expected: {
+            providerState: "indeterminate_after_crash",
+            promptEpoch: descriptor.promptEpoch,
+            sessionMutationEpoch: descriptor.sessionMutationEpoch,
+            requestHash: descriptor.requestHash,
+            historyHash: descriptor.historyHash,
+            worldStateBaselineHash: descriptor.worldStateBaselineHash,
+          },
+          reason: "REL-001 drill: provider outcome unknown after restart",
+          riskAcknowledged: false,
+          actorID: "rel-001-drill",
+        }).pipe(
+          Effect.mapError(
+            (error) =>
+              `resolve conflict: ${error instanceof SessionLegacyProviderResolution.Conflict ? error.reason : error._tag}`,
+          ),
+        )
+        evidence("resolve", `${sessionID} receipt=${descriptor.receiptID} resolution=${resolved.resolutionID}`)
+      }
+    }
+
+    for (const sessionID of INCIDENT_SESSIONS) {
+      const history = yield* db
+        .get<{ state: string }>(sql`SELECT state FROM session_history_state WHERE session_id = ${sessionID}`)
+        .pipe(Effect.orDie)
+      evidence("post-recovery", `${sessionID} history=${history?.state}`)
+      if (history?.state === "recovery_required") return yield* Effect.die(`session still recovery_required after resolution`)
+    }
+
+    evidence("oracle", "provider invocations during abandoned recovery = 0 (any invocation fails the drill)")
+
+    const forkTarget = INCIDENT_SESSIONS[0]
+    const forkResult = yield* sessions
+      .fork({ sessionID: SessionID.make(forkTarget), intentID: `rel-001-drill-fork-${randomUUID().slice(0, 8)}` })
+      .pipe(Effect.provideService(InstanceRef, drillInstanceContext), Effect.exit)
+    if (Exit.isFailure(forkResult)) return yield* Effect.die(`fork smoke failed: ${forkResult.cause}`)
+    evidence("fork", `${forkTarget} fork intent admitted`)
+
+    const user = yield* sessions
+      .updateMessage({
+        id: MessageID.make(`msg_rel001_${randomUUID().slice(0, 8)}`),
+        sessionID: SessionID.make(forkTarget),
+        role: "user",
+        time: { created: Date.now() },
+        agent: "build",
+        model: { providerID: "deepseek", modelID: "deepseek-v4-flash" } as never,
+      })
+      .pipe(Effect.provideService(InstanceRef, drillInstanceContext), Effect.exit)
+    if (Exit.isFailure(user)) return yield* Effect.die(`new message write failed: ${user.cause}`)
+    evidence("new-message", `${forkTarget} post-recovery message write accepted`)
+
+    return { evidence: evidenceLines }
+  }).pipe(Effect.provide(layersFor(database)))
+}
+
+if (import.meta.main) {
+  const source = arg("--db")
+  if (!source) {
+    console.error("usage: bun script/rel-001-drill.ts --db <production-snapshot-drill-copy.db>")
+    process.exit(2)
+  }
+  const database = await copyForDrill(source)
+  const outcome = await Effect.runPromise(runDrill(database).pipe(Effect.exit))
+  if (Exit.isFailure(outcome)) {
+    console.error(`REL-001 drill FAILED: ${outcome.cause}`)
+    process.exit(1)
+  }
+  console.log("REL-001 summary: PASS")
+}
diff --git a/packages/deepagent-code/script/risk-003-maintenance.ts b/packages/deepagent-code/script/risk-003-maintenance.ts
new file mode 100644
index 00000000..bb2e502e
--- /dev/null
+++ b/packages/deepagent-code/script/risk-003-maintenance.ts
@@ -0,0 +1,204 @@
+#!/usr/bin/env bun
+
+import path from "node:path"
+import { stat } from "node:fs/promises"
+import { Effect, Exit, Layer } from "effect"
+import { sql } from "drizzle-orm"
+import { Database } from "@deepagent-code/core/database/database"
+import { EventV2, Cursor } from "@deepagent-code/core/event"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { BackgroundJob } from "@/background/job"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { Session } from "@/session/session"
+import { SessionDiffArtifact } from "@/session/diff-artifact"
+import { SessionID } from "@/session/schema"
+
+// RISK-003 data-maintenance drill (BUG-407-010 §14). Runs only against a drill COPY of the
+// production snapshot (basename must contain "drill"). Gate order is strict:
+//   sync backfill → message diff backfill (②③) → snapshot/floor parity + physical deletion (⑥⑦)
+//   → integrity check → VACUUM (⑪). Every gate reports MiB/count evidence before and after;
+//   any failure stops the run before the next irreversible step.
+
+const arg = (name: string) => {
+  const index = process.argv.indexOf(name)
+  return index === -1 ? undefined : process.argv[index + 1]
+}
+
+const MiB = (bytes: number) => (bytes / 1048576).toFixed(1)
+
+const evidenceLines: { step: string; detail: string }[] = []
+const evidence = (step: string, detail: string) => {
+  evidenceLines.push({ step, detail })
+  console.log(`RISK-003 ${step}: ${detail}`)
+}
+
+const layersFor = (database: string) => {
+  // Same wiring as the REL-001 drill: every consumer must point at the drill path explicitly,
+  // because EventV2.defaultLayer bakes the channel-local Database.defaultLayer.
+  const eventV2 = EventV2.layer.pipe(Layer.provide(Database.layerFromPath(database)))
+  const bridge = EventV2Bridge.layer.pipe(Layer.provide(eventV2))
+  const sessionProjector = SessionProjector.layer.pipe(
+    Layer.provide(eventV2),
+    Layer.provide(Database.layerFromPath(database)),
+  )
+  return Layer.mergeAll(
+    Session.layer.pipe(
+      Layer.provide(BackgroundJob.defaultLayer),
+      Layer.provide(Database.layerFromPath(database)),
+      Layer.provide(bridge),
+      Layer.provide(RuntimeFlags.defaultLayer),
+    ),
+    sessionProjector,
+    eventV2,
+    Database.layerFromPath(database),
+  )
+}
+
+export function runMaintenance(input: {
+  database: string
+  aggregateLimit: number
+  skipDelete: boolean
+  skipVacuum: boolean
+}) {
+  return Effect.gen(function* () {
+    const { db } = yield* Database.Service
+    const events = yield* EventV2.Service
+
+    // Gate 0 — survey.
+    const before = yield* db.get<{ bytes: number; rows: number }>(sql`SELECT SUM(LENGTH(data)) AS bytes, COUNT(*) AS rows FROM event`).pipe(Effect.orDie)
+    evidence("survey", `event rows=${before?.rows ?? 0} bytes=${MiB(before?.bytes ?? 0)} MiB`)
+    const aggregates = yield* db.all<{ aggregate_id: string; bytes: number }>(sql`
+      SELECT aggregate_id, SUM(LENGTH(data)) AS bytes FROM event GROUP BY aggregate_id
+      ORDER BY bytes DESC LIMIT ${input.aggregateLimit}
+    `).pipe(Effect.orDie)
+    for (const row of aggregates) evidence("survey-aggregate", `${row.aggregate_id} ${MiB(row.bytes)} MiB`)
+
+    // Gate 1 — sync index backfill (compact refuses to run before this completes).
+    if (!events.backfillSyncIndex) return yield* Effect.die("event sync backfill is unavailable")
+    let backfill = { processed: 0, complete: false }
+    let backfillLoops = 0
+    do {
+      backfill = yield* events.backfillSyncIndex({ limit: 5000 }).pipe(Effect.exit).pipe(
+        Effect.flatMap((exit) => (Exit.isFailure(exit) ? Effect.die(exit.cause) : Effect.succeed(exit.value))),
+      )
+      backfillLoops++
+    } while (!backfill.complete && backfillLoops < 2000)
+    if (!backfill.complete) return yield* Effect.die("sync index backfill did not complete within 2000 batches")
+    evidence("backfill", `sync index complete after ${backfillLoops} batches`)
+
+    // Gate 2 — ②③ message diff backfill (best effort per session; failures log and continue).
+    const sessionsWithDiffs = yield* db.all<{ session_id: string }>(sql`
+      SELECT DISTINCT session_id FROM message
+      WHERE json_extract(data, '$.role') = 'user' AND json_array_length(json_extract(data, '$.summary.diffs')) > 0
+        AND json_extract(data, '$.summary.diffArtifact') IS NULL
+      LIMIT 20
+    `).pipe(Effect.orDie)
+    let migrated = 0
+    let migrationSkipped = 0
+    for (const row of sessionsWithDiffs) {
+      const result = yield* SessionDiffArtifact.migrate({ sessionID: SessionID.make(row.session_id) }).pipe(Effect.exit)
+      if (Exit.isFailure(result)) migrationSkipped++
+      else migrated++
+    }
+    evidence("diff-backfill", `sessions scanned=${sessionsWithDiffs.length} migrated=${migrated} skipped=${migrationSkipped}`)
+
+    // Gate 3 — ⑥⑦ snapshot/floor parity then physical deletion, per aggregate.
+    let totalDeleted = 0
+    let compactedAggregates = 0
+    for (const row of aggregates) {
+      const sequence = yield* db.get<{ seq: number; floor: number | null }>(sql`
+        SELECT seq, retention_floor_seq AS floor FROM event_sequence WHERE aggregate_id = ${row.aggregate_id}
+      `).pipe(Effect.orDie)
+      if (!sequence) continue
+      const throughSeq = sequence.seq
+      if (sequence.floor !== null && sequence.floor >= throughSeq) continue
+      const checkpoint = yield* events.checkpoint({
+        aggregateID: row.aggregate_id,
+        throughSeq: Cursor.make(throughSeq),
+        codec: "session-projection",
+        schemaVersion: 1,
+        expectedLatest: Cursor.make(throughSeq),
+      }).pipe(Effect.exit)
+      if (Exit.isFailure(checkpoint)) {
+        evidence("checkpoint-skip", `${row.aggregate_id} checkpoint failed: ${checkpoint.cause}`)
+        continue
+      }
+      const imported = yield* events.importSnapshot(checkpoint.value).pipe(Effect.exit)
+      if (Exit.isFailure(imported)) {
+        evidence("import-skip", `${row.aggregate_id} snapshot import failed: ${imported.cause}`)
+        continue
+      }
+      if (input.skipDelete) {
+        evidence("floor-ready", `${row.aggregate_id} snapshot ${checkpoint.value.snapshotID} imported, floor=${throughSeq} (delete skipped)`)
+        continue
+      }
+      let deleted = 0
+      let complete = false
+      let loops = 0
+      do {
+        const step = yield* events.compact({ aggregateID: row.aggregate_id, throughSeq: Cursor.make(throughSeq), limit: 100 }).pipe(Effect.exit)
+        if (Exit.isFailure(step)) {
+          evidence("compact-skip", `${row.aggregate_id} compact failed: ${step.cause}`)
+          break
+        }
+        deleted += step.value.deleted
+        complete = step.value.complete
+        loops++
+      } while (!complete && loops < 2000)
+      totalDeleted += deleted
+      compactedAggregates++
+      evidence("compact", `${row.aggregate_id} deleted=${deleted} events complete=${complete}`)
+    }
+    evidence("delete-summary", `aggregates compacted=${compactedAggregates} total events deleted=${totalDeleted}`)
+
+    const after = yield* db.get<{ bytes: number; rows: number }>(sql`SELECT SUM(LENGTH(data)) AS bytes, COUNT(*) AS rows FROM event`).pipe(Effect.orDie)
+    evidence("after-delete", `event rows=${after?.rows ?? 0} bytes=${MiB(after?.bytes ?? 0)} MiB (was ${MiB(before?.bytes ?? 0)} MiB)`)
+
+    // Gate 4 — integrity.
+    const quickCheck = yield* db.get<{ quick_check: string }>(sql`PRAGMA quick_check`).pipe(Effect.orDie)
+    evidence("integrity", `quick_check=${quickCheck?.quick_check}`)
+    if (quickCheck?.quick_check !== "ok") return yield* Effect.die("integrity check failed before VACUUM")
+
+    // Gate 5 — ⑪ VACUUM + acceptance.
+    if (!input.skipVacuum) {
+      const beforeSize = yield* Effect.promise(() => stat(input.database))
+      yield* db.run(sql`VACUUM`).pipe(Effect.orDie)
+      const afterSize = yield* Effect.promise(() => stat(input.database))
+      evidence("vacuum", `file ${MiB(beforeSize.size)} MiB -> ${MiB(afterSize.size)} MiB`)
+      for (const sessionID of ["ses_00c3f7decfffhjQSy69Q5gSd1S", "ses_0149b8afffffWlu80cVGdzFI9s"]) {
+        const state = yield* db.get<{ state: string }>(sql`SELECT state FROM session_history_state WHERE session_id = ${sessionID}`).pipe(Effect.orDie)
+        evidence("acceptance", `${sessionID} history=${state?.state}`)
+      }
+    }
+
+    return { evidence: evidenceLines }
+  })
+}
+
+if (import.meta.main) {
+  const database = arg("--db")
+  if (!database) {
+    console.error("usage: bun script/risk-003-maintenance.ts --db <drill-copy.db> [--aggregates n] [--skip-delete] [--skip-vacuum]")
+    process.exit(2)
+  }
+  if (!path.basename(database).includes("drill")) {
+    console.error(`refusing to maintain a non-drill database: ${database}`)
+    process.exit(2)
+  }
+  const outcome = await Effect.runPromise(
+    runMaintenance({
+      database,
+      aggregateLimit: Number(arg("--aggregates") ?? 5),
+      skipDelete: process.argv.includes("--skip-delete"),
+      skipVacuum: process.argv.includes("--skip-vacuum"),
+    })
+      .pipe(Effect.provide(layersFor(database)))
+      .pipe(Effect.exit),
+  )
+  if (Exit.isFailure(outcome)) {
+    console.error(`RISK-003 maintenance FAILED: ${outcome.cause}`)
+    process.exit(1)
+  }
+  console.log("RISK-003 summary: PASS")
+}
diff --git a/packages/deepagent-code/src/cli/cmd/github.handler.ts b/packages/deepagent-code/src/cli/cmd/github.handler.ts
index e326f404..c4691c39 100644
--- a/packages/deepagent-code/src/cli/cmd/github.handler.ts
+++ b/packages/deepagent-code/src/cli/cmd/github.handler.ts
@@ -364,7 +364,7 @@ jobs:
           persist-credentials: false
 
       - name: Run deepagent-code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5${envStr}
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7${envStr}
         with:
           model: ${provider}/${model}`,
         )
diff --git a/packages/deepagent-code/src/cli/cmd/goal.ts b/packages/deepagent-code/src/cli/cmd/goal.ts
new file mode 100644
index 00000000..ad83a079
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/goal.ts
@@ -0,0 +1,108 @@
+// PARITY-004 long-tail: goal loop controls (status/pause/resume/stop) — CLI
+// parity with the GUI goal controls (app deepagent.ts goal endpoints). Goes
+// through the instance httpapi via the SDK client; never touches the DB.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { UI } from "../ui"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const GoalCommand = cmd({
+  command: "goal",
+  describe: "inspect and control the goal loop of a session",
+  builder: (yargs: Argv) =>
+    yargs
+      .command(GoalStatusCommand)
+      .command(GoalPauseCommand)
+      .command(GoalResumeCommand)
+      .command(GoalStopCommand)
+      .demandCommand(),
+  async handler() {},
+})
+
+type GoalSessionArgs = QueryFormatArgs & { sessionID: string }
+
+function sessionBuilder(yargs: Argv) {
+  return attachOptions(
+    yargs.positional("sessionID", {
+      describe: "session ID",
+      type: "string",
+      demandOption: true,
+    }),
+  )
+}
+
+export const GoalStatusCommand = effectCmd({
+  command: "status <sessionID>",
+  describe: "show the active goal of a session",
+  builder: sessionBuilder,
+  handler: Effect.fn("Cli.goal.status")(function* (rawArgs) {
+    const args = rawArgs as unknown as GoalSessionArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.deepagent.goalStatus({ sessionID: args.sessionID }).catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const goal = result.data?.goal ?? null
+    if (args.format === "json") {
+      console.log(JSON.stringify({ sessionID: args.sessionID, goal }, null, 2))
+      return
+    }
+    if (!goal) {
+      UI.println(`No active goal for session ${args.sessionID}`)
+      return
+    }
+    console.log(
+      formatTable(
+        ["Goal", "Phase", "Running"],
+        [[goal.goalId, goal.phase, goal.running ? "yes" : "no"]],
+      ),
+    )
+  }),
+})
+
+// pause/resume/stop share one shape: POST with {sessionID} → {ok}. `ok:false`
+// means the goal loop is disabled or there was no goal in the right state.
+function goalControl(action: "pause" | "resume" | "stop", done: string) {
+  return effectCmd({
+    command: `${action} <sessionID>`,
+    describe: `${action} the goal loop of a session`,
+    builder: sessionBuilder,
+    handler: Effect.fn(`Cli.goal.${action}`)(function* (rawArgs) {
+      const args = rawArgs as unknown as GoalSessionArgs
+      const maybeCtx = yield* InstanceRef
+      if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+      const ctx = maybeCtx
+      const result = yield* Effect.promise(async () => {
+        const sdk = await createInstanceSDK(args, ctx.worktree)
+        const call =
+          action === "pause"
+            ? sdk.deepagent.goalPause({ sessionID: args.sessionID })
+            : action === "resume"
+              ? sdk.deepagent.goalResume({ sessionID: args.sessionID })
+              : sdk.deepagent.goalStop({ sessionID: args.sessionID })
+        return call.catch((error) => ({ data: undefined, error }))
+      })
+      if (result.error) return yield* fail(formatSdkError(args, result.error))
+      if (args.format === "json") {
+        console.log(JSON.stringify({ sessionID: args.sessionID, action, ok: result.data?.ok ?? false }, null, 2))
+        return
+      }
+      if (!result.data?.ok) {
+        return yield* fail(
+          `Could not ${action} the goal for session ${args.sessionID} — no active goal in the right state (or the goal loop is disabled)`,
+        )
+      }
+      UI.println(UI.Style.TEXT_SUCCESS_BOLD + `${done} goal for session ${args.sessionID}` + UI.Style.TEXT_NORMAL)
+    }),
+  })
+}
+
+export const GoalPauseCommand = goalControl("pause", "Paused")
+export const GoalResumeCommand = goalControl("resume", "Resumed")
+export const GoalStopCommand = goalControl("stop", "Stopped")
diff --git a/packages/deepagent-code/src/cli/cmd/instance-sdk.ts b/packages/deepagent-code/src/cli/cmd/instance-sdk.ts
new file mode 100644
index 00000000..b295c504
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/instance-sdk.ts
@@ -0,0 +1,86 @@
+// Shared SDK bootstrap + output helpers for the PARITY-004 long-tail query &
+// control commands (goal/worktree/oversight/panel/review/wiki/packs).
+//
+// Same two channels as `run`:
+// - default: in-process Server.Default().app.fetch (no server needed)
+// - `--attach <url>`: a live server, authenticated via ServerAuth headers
+// Commands never touch the DB directly — everything goes through the httpapi.
+import { createOpencodeClient, type OpencodeClient } from "@deepagent-code/sdk/v2"
+import type { Argv } from "yargs"
+import { EOL } from "os"
+
+export type AttachArgs = {
+  attach?: string
+  password?: string
+  username?: string
+}
+
+export type QueryFormatArgs = AttachArgs & { format: "table" | "json" }
+
+// Standard option block for every query/control command in this batch.
+export function attachOptions<T>(yargs: Argv<T>) {
+  return yargs
+    .option("attach", {
+      describe: "attach to a running server (e.g. http://localhost:4096)",
+      type: "string",
+    })
+    .option("password", {
+      describe: "password for the attached server",
+      type: "string",
+    })
+    .option("username", {
+      describe: "username for the attached server",
+      type: "string",
+    })
+    .option("format", {
+      describe: "output format",
+      type: "string",
+      choices: ["table", "json"],
+      default: "table",
+    })
+}
+
+export async function createInstanceSDK(args: AttachArgs, directory: string): Promise<OpencodeClient> {
+  if (args.attach) {
+    const { ServerAuth } = await import("@/server/auth")
+    return createOpencodeClient({
+      baseUrl: args.attach,
+      directory,
+      headers: ServerAuth.headers({ password: args.password, username: args.username }),
+    })
+  }
+  const fetchFn = (async (input: RequestInfo | URL, init?: RequestInit) => {
+    const { Server } = await import("@/server/server")
+    const request = new Request(input, init)
+    return Server.Default().app.fetch(request)
+  }) as typeof globalThis.fetch
+  return createOpencodeClient({
+    baseUrl: "http://deepagent-code.internal",
+    fetch: fetchFn,
+    directory,
+  })
+}
+
+// Friendly message for SDK call failures. `--attach` against a stopped server
+// surfaces as a fetch/connection error; tell the user what to do about it.
+export function formatSdkError(args: AttachArgs, error: unknown): string {
+  let message: string
+  if (error instanceof Error) message = error.message
+  else if (typeof error === "object" && error !== null && "message" in error && typeof (error as { message: unknown }).message === "string")
+    message = (error as { message: string }).message
+  else message = String(error)
+  if (args.attach && /fetch failed|ECONNREFUSED|connect|network/i.test(message)) {
+    return `Could not reach the server at ${args.attach} — is it running? Start one with: deepagent-code serve`
+  }
+  return message
+}
+
+// Minimal padded table renderer (no dependencies). Rows are pre-stringified.
+export function formatTable(headers: string[], rows: string[][]): string {
+  if (rows.length === 0) return "(empty)"
+  const widths = headers.map((header, index) =>
+    Math.max(header.length, ...rows.map((row) => (row[index] ?? "").length)),
+  )
+  const render = (cells: string[]) => cells.map((cell, index) => (cell ?? "").padEnd(widths[index]!)).join("  ")
+  return [render(headers), widths.map((width) => "─".repeat(width)).join("  "), ...rows.map(render)].join(EOL)
+}
diff --git a/packages/deepagent-code/src/cli/cmd/mcp.ts b/packages/deepagent-code/src/cli/cmd/mcp.ts
index 9459afbb..94135884 100644
--- a/packages/deepagent-code/src/cli/cmd/mcp.ts
+++ b/packages/deepagent-code/src/cli/cmd/mcp.ts
@@ -1,6 +1,6 @@
 import { cmd } from "./cmd"
 import { ConfigV1 } from "@deepagent-code/core/v1/config/config"
-import { effectCmd } from "../effect-cmd"
+import { effectCmd, fail } from "../effect-cmd"
 import { Cause } from "effect"
 import { Client } from "@modelcontextprotocol/sdk/client/index.js"
 import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
@@ -17,7 +17,7 @@ import { AppRuntime } from "@/effect/app-runtime"
 import { InstallationVersion } from "@deepagent-code/core/installation/version"
 import path from "path"
 import { Global } from "@deepagent-code/core/global"
-import { modify, applyEdits } from "jsonc-parser"
+import { modify, applyEdits, parse } from "jsonc-parser"
 import { Filesystem } from "@/util/filesystem"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { EventV2 } from "@deepagent-code/core/event"
@@ -100,7 +100,10 @@ export const McpCommand = cmd({
   builder: (yargs) =>
     yargs
       .command(McpAddCommand)
+      .command(McpRemoveCommand)
+      .command(McpEditCommand)
       .command(McpListCommand)
+      .command(McpCatalogCommand)
       .command(McpAuthCommand)
       .command(McpLogoutCommand)
       .command(McpDebugCommand)
@@ -440,6 +443,211 @@ async function addMcpToConfig(name: string, mcpConfig: ConfigMCPV1.Info, configP
   return configPath
 }
 
+// PARITY-004 quick-win: `mcp remove` parity with the GUI delete button
+// (dialog-select-mcp.tsx). The server definition lives in a jsonc config file
+// (project or global), so removal is a jsonc edit that preserves comments —
+// same mechanism as addMcpToConfig above.
+function projectMcpConfigCandidates(baseDir: string) {
+  return [
+    path.join(baseDir, "deepagent-code.json"),
+    path.join(baseDir, "deepagent-code.jsonc"),
+    path.join(baseDir, ".deepagent-code", "deepagent-code.json"),
+    path.join(baseDir, ".deepagent-code", "deepagent-code.jsonc"),
+  ]
+}
+
+function globalMcpConfigCandidates() {
+  // Matches the files Config.get merges for the global scope (config/config.ts).
+  return ["config.jsonc", "config.json", "deepagent-code.jsonc", "deepagent-code.json"].map((file) =>
+    path.join(Global.Path.config, file),
+  )
+}
+
+async function removeMcpFromConfig(name: string, configPath: string) {
+  if (!(await Filesystem.exists(configPath))) return false
+  const text = await Filesystem.readText(configPath)
+  const parsed = parse(text) as { mcp?: Record<string, unknown> } | undefined
+  if (!parsed || typeof parsed !== "object" || !parsed.mcp || !(name in parsed.mcp)) return false
+  const edits = modify(text, ["mcp", name], undefined, {
+    formattingOptions: { tabSize: 2, insertSpaces: true },
+  })
+  await Filesystem.write(configPath, applyEdits(text, edits))
+  return true
+}
+
+// PARITY-004 long-tail: `mcp edit` modifies an EXISTING server definition in
+// place (updateMcpConfig semantics — the GUI edit dialog rewrites the same
+// entry). Same jsonc-preserving mechanism as add/remove: field-level edits via
+// jsonc-parser so comments and sibling keys survive.
+type McpEditPatch = {
+  url?: string
+  environment?: Record<string, string>
+  headers?: Record<string, string>
+  command?: string[]
+}
+
+async function editMcpInConfig(
+  name: string,
+  configPath: string,
+  patch: McpEditPatch,
+): Promise<{ edited: boolean; error?: string }> {
+  if (!(await Filesystem.exists(configPath))) return { edited: false }
+  const text = await Filesystem.readText(configPath)
+  const parsed = parse(text) as { mcp?: Record<string, ConfigMCPV1.Info> } | undefined
+  const existing = parsed && typeof parsed === "object" ? parsed.mcp?.[name] : undefined
+  if (!existing || typeof existing !== "object" || !("type" in existing)) return { edited: false }
+  if ((patch.url !== undefined || patch.headers !== undefined) && existing.type !== "remote") {
+    return { edited: false, error: `--url/--header only apply to remote servers ("${name}" is ${existing.type} in ${configPath})` }
+  }
+  if ((patch.environment !== undefined || patch.command?.length) && existing.type !== "local") {
+    return { edited: false, error: `--env/command only apply to local servers ("${name}" is ${existing.type} in ${configPath})` }
+  }
+  let result = text
+  const apply = (jsonPath: (string | number)[], value: unknown) => {
+    result = applyEdits(result, modify(result, jsonPath, value, { formattingOptions: { tabSize: 2, insertSpaces: true } }))
+  }
+  if (patch.url !== undefined) apply(["mcp", name, "url"], patch.url)
+  if (patch.command?.length) apply(["mcp", name, "command"], patch.command)
+  for (const [key, value] of Object.entries(patch.environment ?? {})) apply(["mcp", name, "environment", key], value)
+  for (const [key, value] of Object.entries(patch.headers ?? {})) apply(["mcp", name, "headers", key], value)
+  await Filesystem.write(configPath, result)
+  return { edited: true }
+}
+
+export const McpEditCommand = effectCmd({
+  command: "edit <name>",
+  describe: "edit an existing MCP server's configuration (url/env/header/command)",
+  builder: (yargs) =>
+    yargs
+      .positional("name", {
+        describe: "name of the MCP server",
+        type: "string",
+        demandOption: true,
+      })
+      .option("url", {
+        describe: "new URL for a remote MCP server",
+        type: "string",
+      })
+      .option("env", {
+        describe: "environment variable for a local MCP server (KEY=VALUE, merged)",
+        type: "string",
+        array: true,
+      })
+      .option("header", {
+        describe: "HTTP header for a remote MCP server (KEY=VALUE, merged)",
+        type: "string",
+        array: true,
+      }),
+  handler: Effect.fn("Cli.mcp.edit")(function* (args) {
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const command = (args["--"] ?? []) as string[]
+    if (!args.url && !args.env?.length && !args.header?.length && !command.length) {
+      return yield* fail("No changes provided. Use --url, --env, --header, or a command after --.")
+    }
+    if (args.url && !URL.canParse(args.url)) return yield* fail(`Invalid URL: ${args.url}`)
+    const entries = (values: string[], kind: string) =>
+      Object.fromEntries(
+        values.map((entry) => {
+          const index = entry.indexOf("=")
+          if (index < 1) throw new Error(`Invalid ${kind}: ${entry}. Expected KEY=VALUE`)
+          return [entry.slice(0, index), entry.slice(index + 1)]
+        }),
+      )
+    const patch: McpEditPatch = {
+      ...(args.url ? { url: args.url } : {}),
+      ...(args.env?.length ? { environment: entries(args.env, "environment variable") } : {}),
+      ...(args.header?.length ? { headers: entries(args.header, "HTTP header") } : {}),
+      ...(command.length ? { command } : {}),
+    }
+    const outcome = yield* Effect.promise(async () => {
+      const candidates = [...projectMcpConfigCandidates(ctx.worktree), ...globalMcpConfigCandidates()]
+      const editedFrom: string[] = []
+      let error: string | undefined
+      for (const configPath of candidates) {
+        const result = await editMcpInConfig(args.name, configPath, patch)
+        if (result.error) error ??= result.error
+        else if (result.edited) editedFrom.push(configPath)
+      }
+      return { editedFrom, error }
+    })
+    if (outcome.editedFrom.length === 0) return yield* fail(outcome.error ?? `MCP server not found: ${args.name}`)
+    for (const configPath of outcome.editedFrom) {
+      UI.println(UI.Style.TEXT_SUCCESS_BOLD + `Updated MCP server "${args.name}" in ${configPath}` + UI.Style.TEXT_NORMAL)
+    }
+  }),
+})
+
+export const McpRemoveCommand = effectCmd({
+  command: "remove <name>",
+  aliases: ["rm"],
+  describe: "remove an MCP server from the project or global config",
+  builder: (yargs) =>
+    yargs.positional("name", {
+      describe: "name of the MCP server",
+      type: "string",
+      demandOption: true,
+    }),
+  handler: Effect.fn("Cli.mcp.remove")(function* (args) {
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const removedFrom = yield* Effect.promise(async () => {
+      const candidates = [...projectMcpConfigCandidates(ctx.worktree), ...globalMcpConfigCandidates()]
+      const paths: string[] = []
+      for (const configPath of candidates) {
+        if (await removeMcpFromConfig(args.name, configPath)) paths.push(configPath)
+      }
+      return paths
+    })
+    if (removedFrom.length === 0) return yield* fail(`MCP server not found: ${args.name}`)
+    for (const configPath of removedFrom) {
+      UI.println(UI.Style.TEXT_SUCCESS_BOLD + `Removed MCP server "${args.name}" from ${configPath}` + UI.Style.TEXT_NORMAL)
+    }
+    UI.println(UI.Style.TEXT_DIM + "OAuth credentials (if any) remain; drop them with: deepagent-code mcp logout " + args.name + UI.Style.TEXT_NORMAL)
+  }),
+})
+
+// PARITY-004 quick-win: `mcp catalog` parity with the GUI preset catalog
+// (groups/mcp.ts `catalog` + dialog-add-mcp.tsx). The catalog is static
+// metadata (McpCatalog.list()) — listing connects nothing. `--format json`
+// keeps the output scriptable.
+export const McpCatalogCommand = effectCmd({
+  command: "catalog",
+  describe: "list preset MCP servers from the vetted catalog (metadata only)",
+  builder: (yargs) =>
+    yargs.option("format", {
+      describe: "output format",
+      type: "string",
+      choices: ["table", "json"],
+      default: "table",
+    }),
+  handler: Effect.fn("Cli.mcp.catalog")(function* (args) {
+    const entries = yield* MCP.Service.use((mcp) => mcp.catalog())
+    if (args.format === "json") {
+      console.log(JSON.stringify(entries, null, 2))
+      return
+    }
+    UI.empty()
+    prompts.intro("MCP Preset Catalog")
+    if (entries.length === 0) {
+      prompts.log.warn("No preset MCP servers in the catalog")
+      prompts.outro("Done")
+      return
+    }
+    for (const entry of entries) {
+      const creds = entry.credentials.length
+        ? ` (credentials: ${entry.credentials.map((credential) => credential.key).join(", ")})`
+        : ""
+      prompts.log.info(
+        `${entry.id} — ${entry.title} [${entry.transport}/${entry.riskTier}]${creds}\n    ${UI.Style.TEXT_DIM}${entry.description}${UI.Style.TEXT_NORMAL}`,
+      )
+    }
+    prompts.outro(`${entries.length} preset(s); enable one from the GUI MCP dialog or add it manually with: deepagent-code mcp add`)
+  }),
+})
+
 export const McpAddCommand = effectCmd({
   command: "add [name]",
   describe: "add an MCP server",
diff --git a/packages/deepagent-code/src/cli/cmd/oversight.ts b/packages/deepagent-code/src/cli/cmd/oversight.ts
new file mode 100644
index 00000000..72b4cb92
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/oversight.ts
@@ -0,0 +1,93 @@
+// PARITY-004 long-tail: oversight approval queue read-side for the CLI.
+// Query-only template: SDK client + table/json output, no direct DB access.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const OversightCommand = cmd({
+  command: "oversight",
+  describe: "inspect the agent oversight plane (approvals, metrics)",
+  builder: (yargs: Argv) => yargs.command(OversightListCommand).command(OversightMetricsCommand).demandCommand(),
+  async handler() {},
+})
+
+export const OversightListCommand = effectCmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list pending approval queue items",
+  builder: (yargs) => attachOptions(yargs),
+  handler: Effect.fn("Cli.oversight.list")(function* (rawArgs) {
+    const args = rawArgs as unknown as QueryFormatArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.oversight.approvals({}).catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const items = result.data?.items ?? []
+    if (args.format === "json") {
+      console.log(JSON.stringify(items, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["ID", "Event", "Status", "Decision", "Summary"],
+        items.map((item) => [
+          item.id,
+          item.eventType,
+          item.status,
+          item.decision ?? "-",
+          item.summary.length > 60 ? item.summary.slice(0, 57) + "..." : item.summary,
+        ]),
+      ),
+    )
+  }),
+})
+
+type OversightMetricsArgs = QueryFormatArgs & { from?: string; to?: string }
+
+export const OversightMetricsCommand = effectCmd({
+  command: "metrics",
+  describe: "show oversight metrics (DLQ, success rate, conflict rate)",
+  builder: (yargs) =>
+    attachOptions(yargs)
+      .option("from", { describe: "window start (epoch ms)", type: "string" })
+      .option("to", { describe: "window end (epoch ms)", type: "string" }),
+  handler: Effect.fn("Cli.oversight.metrics")(function* (rawArgs) {
+    const args = rawArgs as unknown as OversightMetricsArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.oversight
+        .metrics({ ...(args.from ? { from: args.from } : {}), ...(args.to ? { to: args.to } : {}) })
+        .catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const metrics = result.data
+    if (!metrics) return yield* fail("Oversight metrics returned no data")
+    if (args.format === "json") {
+      console.log(JSON.stringify(metrics, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["Metric", "Value"],
+        [
+          ["DLQ events total", String(metrics.dlqEventsTotal)],
+          ["Agent task success rate", String(metrics.agentTaskSuccessRate)],
+          ["Agent tasks completed", String(metrics.agentTaskCompleted)],
+          ["Agent tasks failed", String(metrics.agentTaskFailed)],
+          ["Agent conflict rate", String(metrics.agentConflictRate)],
+          ["Agent push rejected total", String(metrics.agentPushRejectedTotal)],
+        ],
+      ),
+    )
+  }),
+})
diff --git a/packages/deepagent-code/src/cli/cmd/packs.ts b/packages/deepagent-code/src/cli/cmd/packs.ts
new file mode 100644
index 00000000..bae060ca
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/packs.ts
@@ -0,0 +1,64 @@
+// PARITY-004 long-tail: domain pack listing for the CLI.
+// Query-only template: SDK client + table/json output, no direct DB access.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const PacksCommand = cmd({
+  command: "packs",
+  describe: "inspect domain packs",
+  builder: (yargs: Argv) => yargs.command(PacksListCommand).demandCommand(),
+  async handler() {},
+})
+
+type PacksListArgs = QueryFormatArgs & { all?: boolean }
+
+export const PacksListCommand = effectCmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list active domain packs (or the full catalog with --all)",
+  builder: (yargs) =>
+    attachOptions(yargs).option("all", {
+      describe: "show the full installed catalog instead of the active set",
+      type: "boolean",
+      default: false,
+    }),
+  handler: Effect.fn("Cli.packs.list")(function* (rawArgs) {
+    const args = rawArgs as unknown as PacksListArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      const call = args.all ? sdk.deepagent.packsAll({}) : sdk.deepagent.packsActive({})
+      return call.catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const data = result.data
+    if (!data) return yield* fail("Packs listing returned no data")
+    const packs = data.packs
+    if (args.format === "json") {
+      console.log(JSON.stringify(data, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["ID", "Name", "Version", "Risk", "Pinned", "Domains"],
+        packs.map((pack) => [
+          pack.id,
+          pack.name,
+          pack.version,
+          pack.risk,
+          pack.pinned ? "yes" : "no",
+          pack.domains.join(", "),
+        ]),
+      ),
+    )
+    if (!args.all && "snapshotId" in data) {
+      console.log(`snapshot: ${data.snapshotId}`)
+    }
+  }),
+})
diff --git a/packages/deepagent-code/src/cli/cmd/panel.ts b/packages/deepagent-code/src/cli/cmd/panel.ts
new file mode 100644
index 00000000..8655d572
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/panel.ts
@@ -0,0 +1,53 @@
+// PARITY-004 long-tail: Expert Panel armed-state query for the CLI.
+// Query-only template: SDK client + table/json output, no direct DB access.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const PanelCommand = cmd({
+  command: "panel",
+  describe: "inspect the Expert Panel state",
+  builder: (yargs: Argv) => yargs.command(PanelStatusCommand).demandCommand(),
+  async handler() {},
+})
+
+type PanelStatusArgs = QueryFormatArgs & { sessionID: string }
+
+export const PanelStatusCommand = effectCmd({
+  command: "status <sessionID>",
+  describe: "show the effective Expert Panel armed state for a session",
+  builder: (yargs) =>
+    attachOptions(
+      yargs.positional("sessionID", {
+        describe: "session ID",
+        type: "string",
+        demandOption: true,
+      }),
+    ),
+  handler: Effect.fn("Cli.panel.status")(function* (rawArgs) {
+    const args = rawArgs as unknown as PanelStatusArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.deepagent.panel.status({ sessionID: args.sessionID }).catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const status = result.data
+    if (!status) return yield* fail("Panel status returned no data")
+    if (args.format === "json") {
+      console.log(JSON.stringify(status, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["Session", "Armed", "Explicit", "Rounds"],
+        [[status.sessionID, status.armed ? "yes" : "no", status.explicit ? "yes" : "no (global default)", status.rounds]],
+      ),
+    )
+  }),
+})
diff --git a/packages/deepagent-code/src/cli/cmd/review.ts b/packages/deepagent-code/src/cli/cmd/review.ts
new file mode 100644
index 00000000..3a1d879f
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/review.ts
@@ -0,0 +1,50 @@
+// PARITY-004 long-tail: DeepAgent run review list for the CLI.
+// Query-only template: SDK client + table/json output, no direct DB access.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const ReviewCommand = cmd({
+  command: "review",
+  describe: "inspect DeepAgent run reviews",
+  builder: (yargs: Argv) => yargs.command(ReviewListCommand).demandCommand(),
+  async handler() {},
+})
+
+export const ReviewListCommand = effectCmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list recent DeepAgent run reviews",
+  builder: (yargs) => attachOptions(yargs),
+  handler: Effect.fn("Cli.review.list")(function* (rawArgs) {
+    const args = rawArgs as unknown as QueryFormatArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.deepagent.reviews({}).catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const reviews = result.data?.reviews ?? []
+    if (args.format === "json") {
+      console.log(JSON.stringify(reviews, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["Run", "Mode", "Status", "Next action", "Diagnosis"],
+        reviews.map((review) => [
+          review.runId,
+          review.agentMode,
+          review.status,
+          review.nextAction,
+          review.diagnosis.status,
+        ]),
+      ),
+    )
+  }),
+})
diff --git a/packages/deepagent-code/src/cli/cmd/run.ts b/packages/deepagent-code/src/cli/cmd/run.ts
index d9f85017..becce1b1 100644
--- a/packages/deepagent-code/src/cli/cmd/run.ts
+++ b/packages/deepagent-code/src/cli/cmd/run.ts
@@ -25,6 +25,7 @@ import { createOpencodeClient, type OpencodeClient, type ToolPart } from "@deepa
 import { FormatError, FormatUnknownError } from "../error"
 import { INTERACTIVE_INPUT_ERROR, resolveInteractiveStdin } from "./run/runtime.stdin"
 import { backgroundTask, createBackgroundSessions, createSessionTree, questionAnswers } from "./run/noninteractive"
+import { PERMISSION_MODES, permissionReplyFor, resolvePermissionMode, type PermissionMode } from "./run/permission-mode"
 import { Identifier } from "@deepagent-code/core/util/identifier"
 
 type ModelInput = Parameters<OpencodeClient["session"]["prompt"]>[0]["model"]
@@ -238,9 +239,18 @@ export const RunCommand = effectCmd({
       })
       .option("dangerously-skip-permissions", {
         type: "boolean",
-        describe: "auto-approve permissions that are not explicitly denied (dangerous!)",
+        describe: "alias for --permission-mode full-access: auto-approve permissions not explicitly denied (dangerous!)",
         default: false,
       })
+      .option("permission-mode", {
+        type: "string",
+        choices: [...PERMISSION_MODES],
+        // No yargs default: resolvePermissionMode() defaults to "request" and
+        // must be able to tell an explicit --permission-mode apart from the
+        // absent flag when validating the --dangerously-skip-permissions alias.
+        describe:
+          "permission auto-response mode: request rejects every prompt, read-only rejects mutating tools (edit/write/patch/bash/task/external_directory) and approves the rest, full-access approves everything (dangerous!)",
+      })
       .option("question-answer", {
         type: "string",
         array: true,
@@ -306,6 +316,13 @@ export const RunCommand = effectCmd({
         die("--demo requires --interactive")
       }
 
+      let permissionMode: PermissionMode = "request"
+      try {
+        permissionMode = resolvePermissionMode(args)
+      } catch (error) {
+        die(error instanceof Error ? error.message : String(error))
+      }
+
       if (args.interactive && args.format === "json") {
         die("--interactive cannot be used with --format json")
       }
@@ -845,24 +862,20 @@ export const RunCommand = effectCmd({
               const permission = event.properties
               if (!(await sessions.contains(permission.sessionID))) continue
 
-              if (args["dangerously-skip-permissions"]) {
-                await client.permission.reply({
-                  requestID: permission.id,
-                  reply: "once",
-                })
-                emit("permission", { request: permission, reply: "once" })
-              } else {
-                await client.permission.reply({
-                  requestID: permission.id,
-                  reply: "reject",
-                })
-                if (!emit("permission", { request: permission, reply: "reject" })) {
-                  UI.println(
-                    UI.Style.TEXT_WARNING_BOLD + "!",
-                    UI.Style.TEXT_NORMAL +
-                      `permission requested: ${permission.permission} (${permission.patterns.join(", ")}); auto-rejecting`,
-                  )
-                }
+              // Tri-state auto-responder (PARITY-002): request / read-only /
+              // full-access, mirroring the GUI directory approval modes.
+              const reply = permissionReplyFor(permissionMode, permission.permission)
+              await client.permission.reply({
+                requestID: permission.id,
+                reply,
+              })
+              if (!emit("permission", { request: permission, reply }) && reply === "reject") {
+                UI.println(
+                  UI.Style.TEXT_WARNING_BOLD + "!",
+                  UI.Style.TEXT_NORMAL +
+                    `permission requested: ${permission.permission} (${permission.patterns.join(", ")}); auto-rejecting` +
+                    (permissionMode === "read-only" ? " (read-only mode)" : ""),
+                )
               }
             }
 
diff --git a/packages/deepagent-code/src/cli/cmd/run/permission-mode.ts b/packages/deepagent-code/src/cli/cmd/run/permission-mode.ts
new file mode 100644
index 00000000..ceee88f3
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/run/permission-mode.ts
@@ -0,0 +1,50 @@
+// CLI permission tri-state auto-responder (PARITY-002).
+//
+// Mirrors the GUI directory approval modes (packages/app permission.tsx):
+//   request      → every permission prompt is auto-rejected (legacy default)
+//   read-only    → mutating tools (MUTATING_PERMISSIONS from core) are
+//                  rejected, everything else is approved once so the agent
+//                  can still inspect the workspace
+//   full-access  → every prompt is approved once
+//                  (`--dangerously-skip-permissions` is kept as an alias)
+import { isMutatingPermission } from "@deepagent-code/core/permission/mutating"
+
+export const PERMISSION_MODES = ["request", "read-only", "full-access"] as const
+export type PermissionMode = (typeof PERMISSION_MODES)[number]
+
+export type PermissionAutoReply = "once" | "reject"
+
+export function isPermissionMode(value: unknown): value is PermissionMode {
+  return typeof value === "string" && (PERMISSION_MODES as readonly string[]).includes(value)
+}
+
+// Resolves the effective mode from the parsed CLI args. Throws (caller turns
+// into a CLI usage error) on unknown values or contradictory flag combos.
+export function resolvePermissionMode(input: {
+  "permission-mode"?: string
+  "dangerously-skip-permissions"?: boolean
+}): PermissionMode {
+  const raw = input["permission-mode"]
+  if (raw !== undefined && !isPermissionMode(raw)) {
+    throw new Error(`--permission-mode must be one of: ${PERMISSION_MODES.join(", ")}`)
+  }
+  const mode: PermissionMode = raw ?? "request"
+  if (input["dangerously-skip-permissions"]) {
+    // The legacy flag is an alias for full-access; combining it with a
+    // different mode is contradictory.
+    if (raw !== undefined && mode !== "full-access") {
+      throw new Error(
+        "--dangerously-skip-permissions is an alias for --permission-mode full-access and cannot be combined with another mode",
+      )
+    }
+    return "full-access"
+  }
+  return mode
+}
+
+// Decides the auto-reply for one permission prompt under the given mode.
+export function permissionReplyFor(mode: PermissionMode, permission: string): PermissionAutoReply {
+  if (mode === "full-access") return "once"
+  if (mode === "read-only") return isMutatingPermission(permission) ? "reject" : "once"
+  return "reject"
+}
diff --git a/packages/deepagent-code/src/cli/cmd/serve.ts b/packages/deepagent-code/src/cli/cmd/serve.ts
index 100874ca..64b70709 100644
--- a/packages/deepagent-code/src/cli/cmd/serve.ts
+++ b/packages/deepagent-code/src/cli/cmd/serve.ts
@@ -2,10 +2,68 @@ import { Effect } from "effect"
 import { effectCmd } from "../effect-cmd"
 import { withNetworkOptions, resolveNetworkOptions } from "../network"
 import { Flag } from "@deepagent-code/core/flag/flag"
+import { Global } from "@deepagent-code/core/global"
+import { InstallationVersion } from "@deepagent-code/core/installation/version"
+import { randomUUID } from "node:crypto"
+import fsSync from "node:fs"
+import path from "node:path"
+
+// PARITY-003 (Wave 0): lets the new CLI daemon mount this legacy server. Mirrors Daemon.register
+// (packages/cli/src/services/daemon.ts) — atomic state/server.json write, 10s heartbeat that
+// self-terminates when superseded, and file removal on shutdown while we still own it. Plain Node
+// on purpose: the legacy CLI must not depend on the new cli package.
+function registerWithDaemon(url: string, stop: () => Promise<void>) {
+  const file = path.join(Global.Path.state, "server.json")
+  const id = randomUUID()
+  const read = (): { id?: string } | undefined => {
+    try {
+      return JSON.parse(fsSync.readFileSync(file, "utf8"))
+    } catch {
+      return undefined
+    }
+  }
+  const owned = () => read()?.id === id
+  fsSync.mkdirSync(path.dirname(file), { recursive: true })
+  const temp = `${file}.${id}.tmp`
+  fsSync.writeFileSync(temp, JSON.stringify({ id, version: InstallationVersion, url, pid: process.pid }), {
+    mode: 0o600,
+  })
+  fsSync.renameSync(temp, file)
+
+  const heartbeat = setInterval(() => {
+    // Another server took over the registration — the daemon moved on, step down.
+    if (!owned()) process.kill(process.pid, "SIGTERM")
+  }, 10_000)
+  heartbeat.unref()
+
+  let exiting = false
+  const shutdown = () => {
+    if (exiting) return
+    exiting = true
+    clearInterval(heartbeat)
+    if (owned()) {
+      try {
+        fsSync.unlinkSync(file)
+      } catch {
+        // A concurrent takeover may have already replaced the file.
+      }
+    }
+    void stop().finally(() => process.exit(0))
+    // Hard ceiling so a stuck graceful stop cannot outlive the daemon's SIGKILL budget.
+    setTimeout(() => process.exit(0), 2_000).unref()
+  }
+  process.on("SIGTERM", shutdown)
+  process.on("SIGINT", shutdown)
+}
 
 export const ServeCommand = effectCmd({
   command: "serve",
-  builder: (yargs) => withNetworkOptions(yargs),
+  builder: (yargs) =>
+    withNetworkOptions(yargs).option("register", {
+      type: "boolean" as const,
+      default: false,
+      describe: "register this server with the local CLI daemon (writes state/server.json)",
+    }),
   describe: "starts a headless deepagent-code server",
   // Server loads instances per-request via x-deepagent-code-directory header — no
   // need for an ambient project InstanceContext at startup.
@@ -19,6 +77,10 @@ export const ServeCommand = effectCmd({
     const server = yield* Effect.promise(() => Server.listen(opts))
     console.log(`deepagent-code server listening on http://${server.hostname}:${server.port}`)
 
+    if (args.register) {
+      registerWithDaemon(`http://${server.hostname}:${server.port}`, () => server.stop(true))
+    }
+
     yield* Effect.never
   }),
 })
diff --git a/packages/deepagent-code/src/cli/cmd/session.ts b/packages/deepagent-code/src/cli/cmd/session.ts
index 185b6698..7bb08e42 100644
--- a/packages/deepagent-code/src/cli/cmd/session.ts
+++ b/packages/deepagent-code/src/cli/cmd/session.ts
@@ -44,10 +44,79 @@ function pagerCmd(): string[] {
 export const SessionCommand = cmd({
   command: "session",
   describe: "manage sessions",
-  builder: (yargs: Argv) => yargs.command(SessionListCommand).command(SessionDeleteCommand).demandCommand(),
+  builder: (yargs: Argv) =>
+    yargs
+      .command(SessionListCommand)
+      .command(SessionDeleteCommand)
+      .command(SessionRenameCommand)
+      .command(SessionArchiveCommand)
+      .demandCommand(),
   async handler() {},
 })
 
+// PARITY-004 long-tail: `session rename` / `session archive` parity with the
+// GUI session context menu. Same service calls as the httpapi session update
+// handler (setTitle / setArchived) — the CLI owns the local instance, so it
+// drives Session.Service directly like `session list` / `session delete`.
+export const SessionRenameCommand = effectCmd({
+  command: "rename <sessionID> <title>",
+  describe: "rename a session",
+  builder: (yargs) =>
+    yargs
+      .positional("sessionID", {
+        describe: "session ID to rename",
+        type: "string",
+        demandOption: true,
+      })
+      .positional("title", {
+        describe: "new title for the session",
+        type: "string",
+        demandOption: true,
+      }),
+  handler: Effect.fn("Cli.session.rename")(function* (args) {
+    const svc = yield* Session.Service
+    const sessionID = SessionID.make(args.sessionID)
+    yield* svc
+      .get(sessionID)
+      .pipe(Effect.catchIf(NotFoundError.isInstance, () => fail(`Session not found: ${args.sessionID}`)))
+    yield* svc.setTitle({ sessionID, title: args.title })
+    UI.println(UI.Style.TEXT_SUCCESS_BOLD + `Session ${args.sessionID} renamed to "${args.title}"` + UI.Style.TEXT_NORMAL)
+  }),
+})
+
+export const SessionArchiveCommand = effectCmd({
+  command: "archive <sessionID>",
+  describe: "archive a session (or restore it with --undo)",
+  builder: (yargs) =>
+    yargs
+      .positional("sessionID", {
+        describe: "session ID to archive",
+        type: "string",
+        demandOption: true,
+      })
+      .option("undo", {
+        describe: "restore an archived session",
+        type: "boolean",
+        default: false,
+      }),
+  handler: Effect.fn("Cli.session.archive")(function* (args) {
+    const svc = yield* Session.Service
+    const sessionID = SessionID.make(args.sessionID)
+    const session = yield* svc
+      .get(sessionID)
+      .pipe(Effect.catchIf(NotFoundError.isInstance, () => fail(`Session not found: ${args.sessionID}`)))
+    if (args.undo && !session.time.archived) {
+      return yield* fail(`Session ${args.sessionID} is not archived`)
+    }
+    yield* svc.setArchived({ sessionID, time: args.undo ? null : Date.now() })
+    UI.println(
+      UI.Style.TEXT_SUCCESS_BOLD +
+        (args.undo ? `Session ${args.sessionID} restored` : `Session ${args.sessionID} archived`) +
+        UI.Style.TEXT_NORMAL,
+    )
+  }),
+})
+
 export const SessionDeleteCommand = effectCmd({
   command: "delete <sessionID>",
   describe: "delete a session",
@@ -140,6 +209,7 @@ function formatSessionJSON(sessions: Session.Info[]): string {
     title: session.title,
     updated: session.time.updated,
     created: session.time.created,
+    archived: session.time.archived ?? null,
     projectId: session.projectID,
     directory: session.directory,
   }))
diff --git a/packages/deepagent-code/src/cli/cmd/wiki.ts b/packages/deepagent-code/src/cli/cmd/wiki.ts
new file mode 100644
index 00000000..001f167a
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/wiki.ts
@@ -0,0 +1,107 @@
+// PARITY-004 long-tail: Wiki read-side for the CLI (list + search).
+// Query-only template: SDK client + table/json output, no direct DB access.
+// Endpoints are gated by the wiki flag — a disabled wiki surfaces as a
+// friendly server error.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const WikiCommand = cmd({
+  command: "wiki",
+  describe: "browse and search the project Wiki",
+  builder: (yargs: Argv) => yargs.command(WikiListCommand).command(WikiSearchCommand).demandCommand(),
+  async handler() {},
+})
+
+type WikiListArgs = QueryFormatArgs & { type?: string }
+
+export const WikiListCommand = effectCmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list Wiki pages",
+  builder: (yargs) =>
+    attachOptions(yargs).option("type", {
+      describe: "filter by page type",
+      type: "string",
+    }),
+  handler: Effect.fn("Cli.wiki.list")(function* (rawArgs) {
+    const args = rawArgs as unknown as WikiListArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.deepagent.wiki
+        .pages({ ...(args.type ? { type: args.type } : {}) })
+        .catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const pages = result.data?.pages ?? []
+    if (args.format === "json") {
+      console.log(JSON.stringify(pages, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["Doc", "Type", "Scope", "Version", "Editable", "Title"],
+        pages.map((page) => [
+          page.docId,
+          page.type,
+          page.scope,
+          String(page.version),
+          page.editable ? "yes" : "no",
+          page.title,
+        ]),
+      ),
+    )
+  }),
+})
+
+type WikiSearchArgs = QueryFormatArgs & { text: string; type?: string; scope?: string }
+
+export const WikiSearchCommand = effectCmd({
+  command: "search <text>",
+  describe: "full-text search over the Wiki",
+  builder: (yargs) =>
+    attachOptions(
+      yargs
+        .positional("text", {
+          describe: "search text",
+          type: "string",
+          demandOption: true,
+        })
+        .option("type", { describe: "filter by page type", type: "string" })
+        .option("scope", { describe: "filter by scope", type: "string" }),
+    ),
+  handler: Effect.fn("Cli.wiki.search")(function* (rawArgs) {
+    const args = rawArgs as unknown as WikiSearchArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.deepagent
+        .wikiSearch({
+          text: args.text,
+          ...(args.type ? { type: args.type } : {}),
+          ...(args.scope ? { scope: args.scope } : {}),
+        })
+        .catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const hits = result.data?.hits ?? []
+    if (args.format === "json") {
+      console.log(JSON.stringify(hits, null, 2))
+      return
+    }
+    console.log(
+      formatTable(
+        ["Doc", "Type", "Scope", "Score", "Title"],
+        hits.map((hit) => [hit.docId, hit.type, hit.scope, String(hit.score), hit.title]),
+      ),
+    )
+  }),
+})
diff --git a/packages/deepagent-code/src/cli/cmd/worktree.ts b/packages/deepagent-code/src/cli/cmd/worktree.ts
new file mode 100644
index 00000000..6c719777
--- /dev/null
+++ b/packages/deepagent-code/src/cli/cmd/worktree.ts
@@ -0,0 +1,136 @@
+// PARITY-004 long-tail: basic worktree commands (list/create/remove) — CLI
+// parity with the GUI worktree panel. Wraps the experimental worktree
+// endpoints through the SDK client; removal is fail-closed (safe-remove)
+// unless --force is passed.
+import type { Argv } from "yargs"
+import { Effect } from "effect"
+import { cmd } from "./cmd"
+import { effectCmd, fail } from "../effect-cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+import { UI } from "../ui"
+import { attachOptions, createInstanceSDK, formatSdkError, formatTable, type QueryFormatArgs } from "./instance-sdk"
+
+export const WorktreeCommand = cmd({
+  command: "worktree",
+  describe: "manage git worktrees for the current project",
+  builder: (yargs: Argv) =>
+    yargs
+      .command(WorktreeListCommand)
+      .command(WorktreeCreateCommand)
+      .command(WorktreeRemoveCommand)
+      .demandCommand(),
+  async handler() {},
+})
+
+export const WorktreeListCommand = effectCmd({
+  command: "list",
+  aliases: ["ls"],
+  describe: "list worktrees of the current project",
+  builder: (yargs) => attachOptions(yargs),
+  handler: Effect.fn("Cli.worktree.list")(function* (rawArgs) {
+    const args = rawArgs as unknown as QueryFormatArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.worktree.list({}).catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const worktrees = result.data ?? []
+    if (args.format === "json") {
+      console.log(JSON.stringify(worktrees, null, 2))
+      return
+    }
+    console.log(formatTable(["Worktree"], worktrees.map((directory) => [directory])))
+  }),
+})
+
+type WorktreeCreateArgs = QueryFormatArgs & { name?: string; startCommand?: string }
+
+export const WorktreeCreateCommand = effectCmd({
+  command: "create",
+  describe: "create a new worktree",
+  builder: (yargs) =>
+    attachOptions(yargs)
+      .option("name", {
+        describe: "worktree/branch name (default: auto-generated)",
+        type: "string",
+      })
+      .option("start-command", {
+        describe: "additional startup script to run after the project's start command",
+        type: "string",
+      }),
+  handler: Effect.fn("Cli.worktree.create")(function* (rawArgs) {
+    const args = rawArgs as unknown as WorktreeCreateArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.worktree
+        .create({
+          worktreeCreateInput: {
+            ...(args.name ? { name: args.name } : {}),
+            ...(args.startCommand ? { startCommand: args.startCommand } : {}),
+          },
+        })
+        .catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    const worktree = result.data
+    if (!worktree) return yield* fail("Worktree creation returned no data")
+    if (args.format === "json") {
+      console.log(JSON.stringify(worktree, null, 2))
+      return
+    }
+    UI.println(
+      UI.Style.TEXT_SUCCESS_BOLD +
+        `Created worktree "${worktree.name}"${worktree.branch ? ` (branch ${worktree.branch})` : ""} at ${worktree.directory}` +
+        UI.Style.TEXT_NORMAL,
+    )
+  }),
+})
+
+type WorktreeRemoveArgs = QueryFormatArgs & { directory: string; force?: boolean }
+
+export const WorktreeRemoveCommand = effectCmd({
+  command: "remove <directory>",
+  aliases: ["rm"],
+  describe: "remove a worktree (fail-closed unless --force)",
+  builder: (yargs) =>
+    attachOptions(
+      yargs
+        .positional("directory", {
+          describe: "worktree directory to remove",
+          type: "string",
+          demandOption: true,
+        })
+        .option("force", {
+          describe: "remove even if the worktree has uncommitted changes",
+          type: "boolean",
+          default: false,
+        }),
+    ),
+  handler: Effect.fn("Cli.worktree.remove")(function* (rawArgs) {
+    const args = rawArgs as unknown as WorktreeRemoveArgs
+    const maybeCtx = yield* InstanceRef
+    if (!maybeCtx) return yield* Effect.die("InstanceRef not provided")
+    const ctx = maybeCtx
+    const result = yield* Effect.promise(async () => {
+      const sdk = await createInstanceSDK(args, ctx.worktree)
+      return sdk.worktree
+        .safeRemove({ worktreeSafeRemoveInput: { directory: args.directory, ...(args.force ? { force: true } : {}) } })
+        .catch((error) => ({ data: undefined, error }))
+    })
+    if (result.error) return yield* fail(formatSdkError(args, result.error))
+    if (args.format === "json") {
+      console.log(JSON.stringify({ directory: args.directory, removed: result.data ?? false }, null, 2))
+      return
+    }
+    if (!result.data) {
+      return yield* fail(`Worktree ${args.directory} was not removed (uncommitted changes? retry with --force)`)
+    }
+    UI.println(UI.Style.TEXT_SUCCESS_BOLD + `Removed worktree ${args.directory}` + UI.Style.TEXT_NORMAL)
+  }),
+})
diff --git a/packages/deepagent-code/src/context-federation/diagnostics.ts b/packages/deepagent-code/src/context-federation/diagnostics.ts
index f090b090..17313a67 100644
--- a/packages/deepagent-code/src/context-federation/diagnostics.ts
+++ b/packages/deepagent-code/src/context-federation/diagnostics.ts
@@ -17,7 +17,8 @@ import { SessionSchema } from "@deepagent-code/core/session/schema"
 import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { SessionToolRequestResolutionTable } from "@deepagent-code/core/session/sql"
 import { SessionToolRequestReceiptTable } from "../session/tool-request-receipt.sql"
-import { and, desc, eq, inArray, isNull } from "drizzle-orm"
+import { TurnStageEvidence } from "../session/turn-stage-evidence"
+import { and, desc, eq, gte, inArray, isNull, lte } from "drizzle-orm"
 import { Cause, Context, Effect, Layer, Ref, Schema } from "effect"
 import { randomUUID } from "node:crypto"
 import { Session } from "../session/session"
@@ -44,6 +45,22 @@ const StoredSelectedRef = Schema.Struct({
 
 export type ResolutionDecision = "abandoned" | "settled" | "replayed"
 
+// FEAT-005: cohort-level readiness buckets. A selection's per-graph status states fold into one of
+// four buckets so a rollout dashboard can tell cold-start (building) apart from genuine degradation
+// or an authorization block — the in-memory observability snapshot can't (process-scoped, no window).
+export type ReadinessBucket = "ready" | "building" | "degraded" | "blocked"
+
+export type CohortSummary = {
+  readonly window: { readonly sinceMs: number; readonly untilMs: number }
+  readonly selections: number
+  readonly sessions: number
+  readonly tokens: number
+  readonly readiness: Readonly<Record<ReadinessBucket, number>>
+  readonly graphs: Readonly<
+    Record<GraphKind, { readonly statuses: number; readonly ready: number; readonly notReady: number }>
+  >
+}
+
 export class DiagnosticsError extends Schema.TaggedErrorClass<DiagnosticsError>()(
   "ContextFederationDiagnostics.DiagnosticsError",
   { reason: Schema.String },
@@ -63,6 +80,23 @@ export interface Interface {
     readonly actorId: string
     readonly now?: number
   }) => Effect.Effect<ReturnType<typeof attemptView>, DiagnosticsError>
+  /**
+   * FEAT-005: cohort-level durable aggregation. Aggregates federated context selections across all
+   * sessions within [sinceMs, untilMs] from the durable selection table (NOT the in-memory
+   * observability snapshot), bucketed by readiness so rollout decisions aren't skewed by cold-start
+   * indexing noise.
+   */
+  readonly cohort: (input: { readonly sinceMs: number; readonly untilMs?: number }) => Effect.Effect<CohortSummary, DiagnosticsError>
+  /**
+   * BUG-407-012 gap C: recent durable provider-turn stage evidence for a session (optionally
+   * narrowed to one activity), newest first. Exposes where a turn got stuck between the legacy
+   * activity claim and the provider receipt so incidents can be attributed post-hoc.
+   */
+  readonly turnStageEvidence: (input: {
+    readonly sessionId: SessionSchema.ID
+    readonly activityId?: string
+    readonly limit?: number
+  }) => Effect.Effect<readonly TurnStageEvidence.Row[], DiagnosticsError>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@deepagent-code/ContextFederationDiagnostics") {}
@@ -75,15 +109,33 @@ export const layer = Layer.effect(
     const attempts = yield* SessionProviderAttempt.Service
     const federation = yield* SessionFederatedContext.Service
     const owners = yield* SessionProviderOwner.Service
-    const recoveryOwnerToken = `${process.pid}:diagnostics:${randomUUID()}`
-    yield* owners.register({ ownerToken: recoveryOwnerToken, leaseMs: SessionProviderOwner.LeaseMs }).pipe(Effect.orDie)
+    // BUG-407-012 root cause A: same rotation contract as the prompt owner — a fenced lease
+    // rotates to a successor generation; consumers read the current token at use time.
+    const recoveryOwnerBase = `${process.pid}:diagnostics:${randomUUID()}`
+    const recoveryOwnerInitialToken = ContextFederationProviderOwnerRuntime.nextOwnerToken({
+      ownerBase: recoveryOwnerBase,
+      generation: 0,
+    })
+    yield* owners
+      .register({ ownerToken: recoveryOwnerInitialToken, leaseMs: SessionProviderOwner.LeaseMs })
+      .pipe(Effect.orDie)
+    const recoveryOwnerState = yield* Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({
+      ownerToken: recoveryOwnerInitialToken,
+      generation: 0,
+    })
     const ownerHealthy = yield* Ref.make(true)
-    yield* Effect.addFinalizer(() => owners.release({ ownerToken: recoveryOwnerToken }).pipe(Effect.ignore))
+    yield* Effect.addFinalizer(() =>
+      Ref.get(recoveryOwnerState).pipe(
+        Effect.flatMap((state) => owners.release({ ownerToken: state.ownerToken })),
+        Effect.ignore,
+      ),
+    )
     yield* Effect.gen(function* () {
       while (yield* Ref.get(ownerHealthy)) {
         const continued = yield* ContextFederationProviderOwnerRuntime.tick({
           owners,
-          ownerToken: recoveryOwnerToken,
+          owner: recoveryOwnerState,
+          ownerBase: recoveryOwnerBase,
           leaseMs: SessionProviderOwner.LeaseMs,
           healthy: ownerHealthy,
           label: "provider diagnostics",
@@ -209,13 +261,14 @@ export const layer = Layer.effect(
             reason: "legacy_provider_recovery_required",
           })
         if (input.decision === "replayed") {
+          const recoveryOwnerCurrent = yield* Ref.get(recoveryOwnerState)
           const resolved = yield* federation.replayIndeterminate({
             session: input.session,
             attemptId: input.attemptId,
             actorId: input.actorId,
             reason: input.reason,
             riskAcknowledged: input.riskAcknowledged,
-            recoveryOwnerToken,
+            recoveryOwnerToken: recoveryOwnerCurrent.ownerToken,
             now: input.now,
           })
           return attemptView(resolved.replay, undefined, false, input.now ?? Date.now())
@@ -229,9 +282,10 @@ export const layer = Layer.effect(
         if (input.decision === "settled" && !terminal) {
           return yield* new DiagnosticsError({ reason: "persisted_terminal_event_required" })
         }
+        const recoveryOwnerCurrent = yield* Ref.get(recoveryOwnerState)
         const resolved = yield* attempts.resolve({
           attemptId: input.attemptId,
-          recoveryOwnerToken,
+          recoveryOwnerToken: recoveryOwnerCurrent.ownerToken,
           actor: {
             type: "user",
             id: input.actorId,
@@ -256,7 +310,58 @@ export const layer = Layer.effect(
         return attemptView(resolved.attempt, undefined, false, input.now ?? Date.now())
       }).pipe(Effect.mapError(diagnosticsError))
 
-    return Service.of({ get, resolveAttempt })
+    const cohort: Interface["cohort"] = (input) =>
+      Effect.gen(function* () {
+        const untilMs = input.untilMs ?? Date.now()
+        const rows = yield* database.db
+          .select({
+            sessionId: SessionContextSelectionTable.session_id,
+            graphStatuses: SessionContextSelectionTable.graph_statuses,
+            tokenCount: SessionContextSelectionTable.token_count,
+          })
+          .from(SessionContextSelectionTable)
+          .where(and(gte(SessionContextSelectionTable.created_at, input.sinceMs), lte(SessionContextSelectionTable.created_at, untilMs)))
+          .all()
+          .pipe(Effect.orDie)
+        const readiness: Record<ReadinessBucket, number> = { ready: 0, building: 0, degraded: 0, blocked: 0 }
+        const graphs = Object.fromEntries(
+          GraphKind.literals.map((graph) => [graph, { statuses: 0, ready: 0, notReady: 0 }]),
+        ) as Record<GraphKind, { statuses: number; ready: number; notReady: number }>
+        const sessions = new Set<string>()
+        let tokens = 0
+        for (const row of rows) {
+          sessions.add(row.sessionId)
+          tokens += row.tokenCount
+          const statuses = parse(Schema.Array(GraphQueryStatus), row.graphStatuses, "graph_statuses")
+          // Selection-level bucket = the WORST graph state (blocked > degraded > building > ready),
+          // so a single cold/blocked graph keeps the whole selection out of the "ready" cohort.
+          let worst: ReadinessBucket = "ready"
+          for (const status of statuses) {
+            const bucket = readinessBucket(status)
+            graphs[status.graph].statuses += 1
+            if (bucket === "ready") graphs[status.graph].ready += 1
+            else graphs[status.graph].notReady += 1
+            if (bucketRank(bucket) > bucketRank(worst)) worst = bucket
+          }
+          readiness[worst] += 1
+        }
+        return {
+          window: { sinceMs: input.sinceMs, untilMs },
+          selections: rows.length,
+          sessions: sessions.size,
+          tokens,
+          readiness,
+          graphs,
+        } satisfies CohortSummary
+      }).pipe(Effect.mapError(diagnosticsError))
+
+    const turnStageEvidence: Interface["turnStageEvidence"] = (input) =>
+      TurnStageEvidence.recent(database.db, {
+        sessionID: input.sessionId,
+        ...(input.activityId ? { activityID: input.activityId } : {}),
+        ...(input.limit ? { limit: input.limit } : {}),
+      }).pipe(Effect.mapError(diagnosticsError))
+    return Service.of({ get, resolveAttempt, cohort, turnStageEvidence })
   }),
 )
 
@@ -442,6 +547,30 @@ function parse<A>(schema: Schema.Decoder<A>, value: string, field: string) {
   }
 }
 
+// FEAT-005: fold a per-graph query status into a rollout-readiness bucket. complete→ready; a
+// partial with a degraded source is genuine degradation, cold/indexing/stale are cold-start
+// "building" (expected to self-resolve); a blocked graph is an authorization/source block (denied)
+// or an unavailable source (degraded); not_queried (source disabled) counts as not-ready building.
+function readinessBucket(status: GraphQueryStatus): ReadinessBucket {
+  if (status.kind === "complete") return "ready"
+  if (status.kind === "blocked") return status.state === "denied" ? "blocked" : "degraded"
+  if (status.kind === "not_queried") return "building"
+  return status.state === "degraded" ? "degraded" : "building" // partial: cold | indexing | stale
+}
+
+function bucketRank(bucket: ReadinessBucket): number {
+  switch (bucket) {
+    case "ready":
+      return 0
+    case "building":
+      return 1
+    case "degraded":
+      return 2
+    case "blocked":
+      return 3
+  }
+}
+
 function parseInlineAudit(value: string) {
   try {
     const parsed: unknown = JSON.parse(value)
diff --git a/packages/deepagent-code/src/context-federation/provider-owner-runtime.ts b/packages/deepagent-code/src/context-federation/provider-owner-runtime.ts
index b91c7bb6..86dfc0e2 100644
--- a/packages/deepagent-code/src/context-federation/provider-owner-runtime.ts
+++ b/packages/deepagent-code/src/context-federation/provider-owner-runtime.ts
@@ -1,27 +1,47 @@
 export * as ContextFederationProviderOwnerRuntime from "./provider-owner-runtime"
 
+import { randomUUID } from "node:crypto"
 import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
 import { Cause, Effect, Exit, Option, Ref } from "effect"
 
-export function tick<R = never>(input: {
-  readonly owners: Pick<SessionProviderOwner.Interface, "heartbeat">
+/**
+ * Mutable process-level owner identity: the current lease token plus its generation counter.
+ * Consumers must read this at use time — a startup-captured token constant can be fenced away
+ * by lease expiry (e.g. macOS sleep) while the process keeps running.
+ */
+export type OwnerGeneration = {
   readonly ownerToken: string
+  readonly generation: number
+}
+
+export function nextOwnerToken(input: { readonly ownerBase: string; readonly generation: number }) {
+  return `${input.ownerBase}:gen-${input.generation}:${randomUUID()}`
+}
+
+type TickInput<R> = {
+  readonly owners: Pick<SessionProviderOwner.Interface, "heartbeat" | "register">
+  readonly owner: Ref.Ref<OwnerGeneration>
+  readonly ownerBase: string
   readonly leaseMs: number
   readonly healthy: Ref.Ref<boolean>
   readonly label: string
   readonly recover?: Effect.Effect<unknown, unknown, R>
-}) {
+}
+
+export function tick<R = never>(input: TickInput<R>) {
   return Effect.gen(function* () {
+    const current = yield* Ref.get(input.owner)
     const heartbeat = yield* input.owners
-      .heartbeat({ ownerToken: input.ownerToken, leaseMs: input.leaseMs })
+      .heartbeat({ ownerToken: current.ownerToken, leaseMs: input.leaseMs })
       .pipe(Effect.exit)
     if (Exit.isFailure(heartbeat)) {
       const error = Option.getOrUndefined(Cause.findErrorOption(heartbeat.cause))
-      if (error instanceof SessionProviderOwner.ConflictError && error.reason === "provider_owner_lease_not_live") {
-        yield* Ref.set(input.healthy, false)
-        yield* Effect.logError(`${input.label} owner lease expired; stopping provider mutations`)
-        return false
-      }
+      // BUG-407-012 root cause A: an expired lease is correct fencing of the OLD token, not a
+      // terminal fault. The fenced token is never revived or released; rotate to a successor
+      // generation and keep the loop running so dispatch reopens before the next prompt.
+      // `healthy` stays true throughout — only unrecoverable errors may latch it false.
+      if (error instanceof SessionProviderOwner.ConflictError && error.reason === "provider_owner_lease_not_live")
+        return yield* rotate(input)
       yield* Effect.logError(`${input.label} owner heartbeat failed; retrying: ${Cause.pretty(heartbeat.cause)}`)
       return true
     }
@@ -32,3 +52,24 @@ export function tick<R = never>(input: {
     return true
   })
 }
+
+function rotate<R>(input: TickInput<R>) {
+  return Effect.gen(function* () {
+    // Re-read under the Ref so concurrent rotators never double-increment the generation.
+    const current = yield* Ref.get(input.owner)
+    const generation = current.generation + 1
+    const ownerToken = nextOwnerToken({ ownerBase: input.ownerBase, generation })
+    const registered = yield* input.owners
+      .register({ ownerToken, leaseMs: input.leaseMs, successor: true })
+      .pipe(Effect.exit)
+    if (Exit.isFailure(registered)) {
+      yield* Effect.logError(
+        `${input.label} owner generation rotation failed; retrying next tick: ${Cause.pretty(registered.cause)}`,
+      )
+      return true
+    }
+    yield* Ref.set(input.owner, { ownerToken, generation })
+    yield* Effect.logInfo(`${input.label} owner generation rotated: generation=${generation}`)
+    return true
+  })
+}
diff --git a/packages/deepagent-code/src/context-federation/session-context-runtime.ts b/packages/deepagent-code/src/context-federation/session-context-runtime.ts
index cbe5d1da..ba6a5d03 100644
--- a/packages/deepagent-code/src/context-federation/session-context-runtime.ts
+++ b/packages/deepagent-code/src/context-federation/session-context-runtime.ts
@@ -80,6 +80,8 @@ export interface Interface {
     selection: SessionContext.Selection,
     state: "settled" | "failed" | "interrupted",
   ) => Effect.Effect<void, RuntimeError>
+  /** Restart recovery (BUG-003): settle every federation activity still marked `active`. */
+  readonly settleOrphanedActivities: () => Effect.Effect<number, RuntimeError>
   readonly replayIndeterminate: (input: {
     readonly session: Session.Info
     readonly attemptId: string
@@ -174,8 +176,12 @@ export const layer = Layer.effect(
           Effect.mapError(runtimeError),
         )
 
-    const resolve: Interface["resolve"] = (input) =>
-      Effect.gen(function* () {
+    const resolve: Interface["resolve"] = (input) => {
+      // BUG-003: when this call opens a fresh activity, any later failure before commit would
+      // otherwise leave a permanent `active` row (the partial unique index then blocks every new
+      // activity for the session). Track the opened id and roll it back to `interrupted` on error.
+      let openedActivityId: string | undefined
+      return Effect.gen(function* () {
         const handle = yield* runtime.current()
         if (!handle) return yield* new RuntimeError({ reason: "location_unavailable" })
         const now = input.now ?? Date.now()
@@ -286,11 +292,13 @@ export const layer = Layer.effect(
         if (inputIds.length === 0) return yield* new RuntimeError({ reason: "activity_input_missing" })
         const activity = current
           ? { activityId: current.activityId, triggerInputId: current.triggerInputId }
-          : yield* contexts.openActivity({
-              sessionId: SessionSchema.ID.make(input.session.id),
-              triggerInputId: inputIds[0]!,
-              now,
-            })
+          : yield* contexts
+              .openActivity({
+                sessionId: SessionSchema.ID.make(input.session.id),
+                triggerInputId: inputIds[0]!,
+                now,
+              })
+              .pipe(Effect.tap((opened) => Effect.sync(() => (openedActivityId = opened.activityId))))
         yield* contexts.attachInputs({ activityId: activity.activityId, inputIds, now })
         const resolved = yield* query.query({
           intent: "search",
@@ -334,7 +342,15 @@ export const layer = Layer.effect(
           envelope,
           observedLocationMutationEpoch: mutationEpoch,
         }
-      }).pipe(Effect.mapError((error) => (error instanceof RuntimeError ? error : runtimeError(error))))
+      }).pipe(
+        Effect.tapError(() =>
+          openedActivityId === undefined
+            ? Effect.void
+            : contexts.settleActivity({ activityId: openedActivityId, state: "interrupted" }).pipe(Effect.ignore),
+        ),
+        Effect.mapError((error) => (error instanceof RuntimeError ? error : runtimeError(error))),
+      )
+    }
 
     const commit = (input: {
       readonly sessionId: string
@@ -509,6 +525,28 @@ export const layer = Layer.effect(
         Effect.mapError((error) => runtimeError(error)),
       )
 
+    const settleOrphanedActivities: Interface["settleOrphanedActivities"] = () =>
+      Effect.gen(function* () {
+        // Restart recovery (BUG-003), mirroring the global semantics of the legacy
+        // SessionPromptIntent.recoverActiveActivities: an activity still `active` at startup
+        // belongs to a dead run loop (the previous process died or was killed mid-turn) and would
+        // otherwise lock the session's partial unique index forever. Best-effort per row; real DB
+        // failures surface through the error channel.
+        const active = yield* database.db
+          .select({ activityId: SessionActivityTable.activity_id, sessionId: SessionActivityTable.session_id })
+          .from(SessionActivityTable)
+          .where(eq(SessionActivityTable.state, "active"))
+          .all()
+          .pipe(Effect.mapError(runtimeError))
+        yield* Effect.forEach(active, (row) =>
+          Effect.gen(function* () {
+            yield* contexts.settleActivity({ activityId: row.activityId, state: "interrupted" }).pipe(Effect.ignore)
+            yield* authorization.remove(row.sessionId).pipe(Effect.ignore)
+          }),
+        )
+        return active.length
+      })
+
     const replayIndeterminate: Interface["replayIndeterminate"] = (input) =>
       Effect.gen(function* () {
         const attempt = yield* attempts.get(input.attemptId)
@@ -687,6 +725,7 @@ export const layer = Layer.effect(
       resolve,
       prepareProviderTurn,
       settleActivity,
+      settleOrphanedActivities,
       replayIndeterminate,
       releasedKnowledgeForActiveSession,
     })
diff --git a/packages/deepagent-code/src/deepagent/profile-detector.ts b/packages/deepagent-code/src/deepagent/profile-detector.ts
index b45e707d..66e1fb53 100644
--- a/packages/deepagent-code/src/deepagent/profile-detector.ts
+++ b/packages/deepagent-code/src/deepagent/profile-detector.ts
@@ -1,168 +1,8 @@
-import { existsSync, readFileSync } from "node:fs"
-import path from "node:path"
-import type { AgentGateway } from "@deepagent-code/core/agent-gateway"
-
-type ExtendedProblemProfile = Parameters<typeof AgentGateway.DeepAgentDomainPackRegistry.score>[0]
-
-// docs/34 §4.1/§5 — ProfileDetector: build a multi-dimensional ExtendedProblemProfile from real
-// workspace signals so domain pack activation is driven by facts, not guesses. Production callers
-// pass the workspace-context output (languages/frameworks already detected) plus the current round
-// signals and any user overrides. Does NOT do its own fs scanning — delegates to what workspace-
-// context already computed and is handed in as input.
-
-export type WorkspaceSignals = {
-  readonly cwd: string
-  readonly agentMode: "general" | "high" | "xhigh" | "max" | "ultra"
-  readonly scenarioMode: "direct" | "intelligence"
-  readonly userRequest: string
-  readonly languages?: readonly string[]
-  readonly frameworks?: readonly string[]
-  readonly packageScripts?: Readonly<Record<string, string>>
-  // Optional round signals from prior diagnosis / validation
-  readonly roundSignals?: readonly string[]
-  // User-pinned packs (from settings / HTTP API override)
-  readonly userOverrides?: readonly string[]
-}
-
-const CODE_RISK_KEYWORDS = /security|auth|payment|billing|crypto|encrypt|secret|vuln|cve|pentest/i
-const FINANCE_KEYWORDS = /finance|payment|billing|ledger|accounting|invoice|transaction|audit/i
-const HEALTHCARE_KEYWORDS = /health|medical|patient|ehr|phi|hipaa|dicom|clinical/i
-const PRIVACY_KEYWORDS = /gdpr|pii|personal.?data|privacy|consent|anonymi/i
-const PHI_KEYWORDS = /phi|protected.health|patient.record/i
-const READ_ONLY_QUERY_KEYWORDS =
-  /\b(query|count|list|show|read|inspect|status|diff|log|config|select|explain|grep|rg|find)\b|查一下|查询|统计|列出|显示|读取|看一下|多少个|有哪些|当前状态|日志里|配置里|数据库里/i
-const MUTATION_KEYWORDS =
-  /\b(fix|implement|edit|modify|write|delete|deploy|migrate|migration|backfill|transaction|constraint|insert|update|alter|drop|restart|apply|remove)\b|修复|实现|修改|写入|删除|部署|迁移|更新|重启/i
-
-// Detect languages from the workspace (package.json / pyproject / go.mod / Cargo.toml etc.).
-const detectLanguages = (cwd: string): string[] => {
-  const langs: string[] = []
-  if (existsSync(path.join(cwd, "package.json"))) {
-    langs.push("javascript")
-    try {
-      const pkg = JSON.parse(readFileSync(path.join(cwd, "package.json"), "utf8"))
-      const deps = { ...pkg.dependencies, ...pkg.devDependencies }
-      if (deps["typescript"] || deps["@types/node"] || existsSync(path.join(cwd, "tsconfig.json"))) {
-        langs.push("typescript")
-      }
-    } catch {
-      langs.push("typescript")
-    } // assume TS on parse failure
-  }
-  if (existsSync(path.join(cwd, "pyproject.toml")) || existsSync(path.join(cwd, "setup.py"))) langs.push("python")
-  if (existsSync(path.join(cwd, "go.mod"))) langs.push("go")
-  if (existsSync(path.join(cwd, "Cargo.toml"))) langs.push("rust")
-  if (existsSync(path.join(cwd, "CMakeLists.txt"))) langs.push("cpp")
-  return [...new Set(langs)]
-}
-
-// Detect frameworks from package.json deps.
-const detectFrameworks = (cwd: string): string[] => {
-  const fw: string[] = []
-  const pkgFile = path.join(cwd, "package.json")
-  if (!existsSync(pkgFile)) return fw
-  try {
-    const pkg = JSON.parse(readFileSync(pkgFile, "utf8"))
-    const deps = { ...pkg.dependencies, ...pkg.devDependencies }
-    if (deps["react"] || deps["react-dom"]) fw.push("react")
-    if (deps["solid-js"]) fw.push("solidjs")
-    if (deps["vue"]) fw.push("vue")
-    if (deps["svelte"]) fw.push("svelte")
-    if (deps["next"]) fw.push("next.js")
-    if (deps["express"] || deps["fastify"] || deps["hono"] || deps["@hono/core"]) fw.push("backend-framework")
-    if (deps["drizzle-orm"] || deps["prisma"] || deps["typeorm"]) fw.push("orm")
-    if (deps["bun"]) fw.push("bun")
-    if (deps["effect"]) fw.push("effect")
-  } catch {
-    /* skip */
-  }
-  return [...new Set(fw)]
-}
-
-// Derive code_domains from languages, frameworks, and user request.
-const deriveCodeDomains = (langs: string[], frameworks: string[], request: string): string[] => {
-  const d: string[] = ["code"]
-  if (frameworks.some((f) => ["react", "solidjs", "vue", "svelte"].includes(f))) d.push("frontend")
-  if (frameworks.some((f) => f === "backend-framework")) d.push("backend")
-  if (langs.includes("cuda") || langs.includes("cpp") || /\b(kernel|gemm|cuda|gpu|sgemm|rocm)\b/i.test(request)) {
-    d.push("gpu_kernel")
-    if (!langs.includes("cpp")) langs.push("cpp")
-  }
-  if (langs.includes("python")) d.push("data")
-  if (READ_ONLY_QUERY_KEYWORDS.test(request) && !MUTATION_KEYWORDS.test(request)) {
-    d.push("query", "deterministic", "read_only")
-  }
-  return [...new Set(d)]
-}
-
-// Extract risk markers from the user request + repo signals.
-const extractRiskMarkers = (request: string, repoSignals: string[]): string[] => {
-  const m: string[] = []
-  const hay = `${request} ${repoSignals.join(" ")}`.toLowerCase()
-  if (CODE_RISK_KEYWORDS.test(hay)) m.push("security")
-  if (FINANCE_KEYWORDS.test(hay)) m.push("finance")
-  if (HEALTHCARE_KEYWORDS.test(hay)) m.push("healthcare")
-  if (PRIVACY_KEYWORDS.test(hay)) m.push("pii", "privacy")
-  if (PHI_KEYWORDS.test(hay)) m.push("phi")
-  return [...new Set(m)]
-}
-
-// Extract business_domains from request + risk markers.
-const deriveBusinessDomains = (request: string, riskMarkers: string[]): string[] => {
-  const d: string[] = []
-  if (FINANCE_KEYWORDS.test(request) || riskMarkers.includes("finance")) d.push("finance")
-  if (HEALTHCARE_KEYWORDS.test(request) || riskMarkers.includes("healthcare")) d.push("healthcare")
-  return d
-}
-
-// Infer a rough task_kind from the user request (heuristic; good enough for pack scoring).
-const inferTaskKind = (request: string): ExtendedProblemProfile["task_kind"] => {
-  const r = request.toLowerCase()
-  if (/\b(fix|bug|error|fail|broken|crash|traceback)\b/.test(r)) return "debug"
-  if (/\b(review|audit|check|inspect|scan)\b/.test(r)) return "review"
-  if (/\b(test|spec|coverage|unit|e2e|integration)\b/.test(r)) return "test"
-  if (/\b(migrat|upgrade|refactor|rename|move|convert)\b/.test(r)) return "migrate"
-  if (/\b(optim|improv|speed|perf|latency|memory|throughput)\b/.test(r)) return "optimize"
-  if (/\b(explain|document|describe|what|how|why)\b/.test(r)) return "explain"
-  if (/\b(deploy|release|ship|produc|operation)\b/.test(r)) return "operate"
-  return "implement"
-}
-
-// Collect signals from the repo (directory names, config files, README snippet).
-const collectRepoSignals = (cwd: string, userRequest: string): string[] => {
-  const signals: string[] = [userRequest.slice(0, 200)]
-  try {
-    const readmePath = ["README.md", "README.txt", "readme.md"].map((f) => path.join(cwd, f)).find(existsSync)
-    if (readmePath) signals.push(readFileSync(readmePath, "utf8").slice(0, 500))
-  } catch {
-    /* skip */
-  }
-  return signals
-}
-
-// Build a full ExtendedProblemProfile from workspace signals. This is the production entry point
-// called by the gateway/orchestrator before pack activation (docs/34 §5/§9 S5).
-export const buildProfile = (signals: WorkspaceSignals): ExtendedProblemProfile => {
-  const langs = signals.languages?.length ? [...signals.languages] : detectLanguages(signals.cwd)
-  const frameworks = signals.frameworks?.length ? [...signals.frameworks] : detectFrameworks(signals.cwd)
-  const repoSignals = collectRepoSignals(signals.cwd, signals.userRequest)
-  const codeDomains = deriveCodeDomains(langs, frameworks, signals.userRequest)
-  const riskMarkers = extractRiskMarkers(signals.userRequest, repoSignals)
-  const businessDomains = deriveBusinessDomains(signals.userRequest, riskMarkers)
-
-  return {
-    scenario_mode: signals.scenarioMode,
-    agent_strength: signals.agentMode,
-    task_kind: inferTaskKind(signals.userRequest),
-    code_domains: codeDomains,
-    business_domains: businessDomains,
-    platforms: [],
-    languages: langs,
-    frameworks,
-    data_classes: riskMarkers.filter((r) => ["pii", "phi"].includes(r)),
-    risk_markers: riskMarkers,
-    repo_signals: repoSignals.slice(0, 3),
-    round_signals: signals.roundSignals ?? [],
-    user_overrides: signals.userOverrides ?? [],
-  }
-}
+// FEAT-002: profile construction was lowered into core (packages/core/src/deepagent/profile-
+// builder.ts) so the agent gateway (core) can build the SAME ExtendedProblemProfile it hands to
+// knowledge retrieval and pack-snapshot recording — one activation authority per run. core cannot
+// import deepagent-code, so this module is now a thin re-export: existing deepagent-code callers
+// (HTTP handlers, tests) keep their import path and behavior unchanged.
+
+export { buildProfile } from "@deepagent-code/core/deepagent/profile-builder"
+export type { WorkspaceSignals } from "@deepagent-code/core/deepagent/profile-builder"
diff --git a/packages/deepagent-code/src/effect/app-runtime.ts b/packages/deepagent-code/src/effect/app-runtime.ts
index 75eb49bf..3c3f24b9 100644
--- a/packages/deepagent-code/src/effect/app-runtime.ts
+++ b/packages/deepagent-code/src/effect/app-runtime.ts
@@ -56,6 +56,7 @@ import { BackgroundJob } from "@/background/job"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { DurableLearningRuntime } from "@/deepagent/learning-runtime"
+import { LegacyEventCanonicalizerRuntime } from "@/legacy-event-canonicalizer-runtime"
 
 export const AppLayer = Layer.mergeAll(
   Npm.defaultLayer,
@@ -86,6 +87,8 @@ export const AppLayer = Layer.mergeAll(
   EventV2Bridge.defaultLayer,
   SessionProjection.defaultLayer,
   DurableLearningRuntime.defaultLayer,
+  // RISK-003 ④: durable schedule for the legacy event canonicalizer (flag-gated, default OFF).
+  LegacyEventCanonicalizerRuntime.defaultLayer,
   SessionRunState.defaultLayer,
   SessionProcessor.defaultLayer,
   SessionCompaction.defaultLayer,
diff --git a/packages/deepagent-code/src/effect/runtime-flags.ts b/packages/deepagent-code/src/effect/runtime-flags.ts
index f0df8f27..8cbf9e50 100644
--- a/packages/deepagent-code/src/effect/runtime-flags.ts
+++ b/packages/deepagent-code/src/effect/runtime-flags.ts
@@ -311,19 +311,41 @@ export class Service extends ConfigService.Service<Service>()("@deepagent-code/R
   // ONLY the runLoop steer drain — it does NOT activate the dormant experimentalEventSystem V2 runner.
   // Disable with DEEPAGENT_CODE_V4_STEERING=false.
   v4Steering: stableOn("DEEPAGENT_CODE_V4_STEERING"),
+  // BUG-004: maximum consecutive steer-absorption rounds within ONE activity run. When reached, the
+  // run loop stops absorbing and ends the activity; any still-pending steers are consumed by the
+  // NEXT drain cycle as a fresh activity instead of silently extending the old work without bound.
+  steerAbsorbLimit: positiveIntegerWithDefault("DEEPAGENT_CODE_STEER_ABSORB_LIMIT", 5),
+  // BUG-407-012 gap C: pre-dispatch deadline watchdog. DEFAULT OFF. When enabled, a maintenance
+  // sweep fails any legacy activity that stayed active past the deadline WITHOUT durable receipt /
+  // dispatch evidence, through the existing terminalization path with a typed terminal reason (so an
+  // exact retry remains possible). Activities that already have a receipt are never touched — the
+  // existing outcome-unknown recovery stays authoritative for those.
+  providerPreDispatchWatchdog: bool("DEEPAGENT_CODE_PROVIDER_PRE_DISPATCH_WATCHDOG"),
+  providerPreDispatchDeadlineMs: positiveIntegerWithDefault(
+    "DEEPAGENT_CODE_PROVIDER_PRE_DISPATCH_DEADLINE_MS",
+    10 * 60_000,
+  ),
   // BUG-407-007 staged authority cutover. `legacy` preserves the existing in-process permission and
   // no-progress owner. `durable` routes production legacy activities through the SQLite-backed
-  // objective/progress/permission authority. This deliberately ships legacy-owned until the live and
-  // packaged recovery gates are complete.
-  activityAuthority: Config.string("DEEPAGENT_CODE_ACTIVITY_AUTHORITY").pipe(
-    Config.withDefault("legacy"),
-    Config.map((value): "legacy" | "durable" => {
-      if (value === "legacy" || value === "durable") return value
-      throw new Error(
-        `Invalid DEEPAGENT_CODE_ACTIVITY_AUTHORITY="${value}". Must be one of: legacy, durable. Refusing to select an unknown activity authority.`,
-      )
-    }),
-  ),
+  // objective/progress/permission authority.
+  // FEAT-011 T3/T4/T6: the unified activity FACADE tools (activity_start/status/result/control).
+  // Staged OFF: the facade never duplicates lifecycle state — it delegates to the existing Task
+  // durable queue / GoalManager / PanelConsult runners and records session_facade_activity rows
+  // (fail-closed partial unique index per (parent_session, subkind) active). Default false until
+  // the release gate qualifies the delegation paths; enable with DEEPAGENT_CODE_ACTIVITY_FACADE=true.
+  activityFacade: bool("DEEPAGENT_CODE_ACTIVITY_FACADE"),
+  // RISK-003 ④ (BUG-407-010 legacy data governance): durable automated schedule for the legacy
+  // event canonicalizer. The canonicalizer itself is already wired (core event.ts
+  // canonicalizeLegacyArtifacts + the sync maintenance endpoint); this flag starts a bounded
+  // background loop that walks the backlog in small batches. DEFAULT OFF (conservative rollout —
+  // the governance runbook advances per-step on production copies). Failures only log; the loop
+  // never deletes events or VACUUMs. Enable with DEEPAGENT_CODE_LEGACY_EVENT_CANONICALIZER=true.
+  legacyEventCanonicalizer: bool("DEEPAGENT_CODE_LEGACY_EVENT_CANONICALIZER"),
+  // RISK-003 ① staged rollout: converge inline summary diffs onto the session_diff_artifact
+  // authority at write time (rewrites the message row to a compact descriptor). Staged OFF until
+  // the diff read path serves artifact descriptors and the §14 evidence chain (floor parity) is
+  // in place; until then the bug-407-010 hotfix contract holds (bound at read, storage untouched).
+  sessionDiffArtifactCapture: bool("DEEPAGENT_CODE_SESSION_DIFF_ARTIFACT_CAPTURE"),
   // PR-2: Streaming degeneration detector mode for reasoning outputs.
   // "off"    — detector is disabled; all output passes through unmodified.
   // "shadow" — detector runs and logs hits, but never triggers a circuit break.
diff --git a/packages/deepagent-code/src/index.ts b/packages/deepagent-code/src/index.ts
index 32cd7be5..022d41fe 100644
--- a/packages/deepagent-code/src/index.ts
+++ b/packages/deepagent-code/src/index.ts
@@ -31,6 +31,13 @@ import { WebCommand } from "./cli/cmd/web"
 import { PrCommand } from "./cli/cmd/pr"
 import { SessionCommand } from "./cli/cmd/session"
 import { DbCommand } from "./cli/cmd/db"
+import { GoalCommand } from "./cli/cmd/goal"
+import { WorktreeCommand } from "./cli/cmd/worktree"
+import { OversightCommand } from "./cli/cmd/oversight"
+import { PanelCommand } from "./cli/cmd/panel"
+import { ReviewCommand } from "./cli/cmd/review"
+import { WikiCommand } from "./cli/cmd/wiki"
+import { PacksCommand } from "./cli/cmd/packs"
 import { errorMessage } from "./util/error"
 import { PluginCommand } from "./cli/cmd/plug"
 import { Heap } from "./cli/heap"
@@ -145,6 +152,13 @@ const cli = yargs(args)
   .command(SessionCommand)
   .command(PluginCommand)
   .command(DbCommand)
+  .command(GoalCommand)
+  .command(WorktreeCommand)
+  .command(OversightCommand)
+  .command(PanelCommand)
+  .command(ReviewCommand)
+  .command(WikiCommand)
+  .command(PacksCommand)
   .fail((msg, err) => {
     if (
       msg?.startsWith("Unknown argument") ||
diff --git a/packages/deepagent-code/src/legacy-event-canonicalizer-runtime.ts b/packages/deepagent-code/src/legacy-event-canonicalizer-runtime.ts
new file mode 100644
index 00000000..158d30da
--- /dev/null
+++ b/packages/deepagent-code/src/legacy-event-canonicalizer-runtime.ts
@@ -0,0 +1,71 @@
+export * as LegacyEventCanonicalizerRuntime from "./legacy-event-canonicalizer-runtime"
+
+import { EventV2 } from "@deepagent-code/core/event"
+import { Cause, Duration, Effect, Layer, Schedule } from "effect"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+
+// RISK-003 ④ (BUG-407-010 legacy data governance): durable automated schedule for the legacy
+// event canonicalizer. The canonicalizer itself is already implemented and wired
+// (core event.ts `canonicalizeLegacyArtifacts` + the sync `artifacts` maintenance endpoint);
+// what was missing is an automated schedule, so backlog convergence depended on a client manually
+// driving the maintenance endpoint. This daemon closes that gap with a conservative loop:
+//   - flag-gated (RuntimeFlags.legacyEventCanonicalizer), DEFAULT OFF
+//   - bounded batches (a few events per tick) on a spaced interval
+//   - failures only log a warning; the loop never blocks a turn
+//   - evidence-only: it canonicalizes oversized legacy payloads into event_artifact rows and
+//     NEVER deletes events or VACUUMs (those remain gated human-runbook steps, bug-407-010 §14).
+const defaultPollInterval = Duration.minutes(5)
+const defaultMaxEventsPerTick = 16
+
+export const makeLayer = (options?: {
+  readonly pollInterval?: Duration.Duration
+  readonly maxEventsPerTick?: number
+}) =>
+  Layer.effectDiscard(
+    Effect.gen(function* () {
+      const flags = yield* RuntimeFlags.Service
+      if (!flags.legacyEventCanonicalizer) return
+      const events = yield* EventV2.Service
+      const pollInterval = options?.pollInterval ?? defaultPollInterval
+      const maxEventsPerTick = Math.max(1, options?.maxEventsPerTick ?? defaultMaxEventsPerTick)
+      // The stateless scan resumes from the first not-yet-canonicalized event, but rows that are
+      // skipped as invalid never acquire an artifact row, so the loop keeps an in-memory cursor
+      // that walks past them; the cursor resets when the scan exhausts, re-scanning (and cheaply
+      // re-skipping) those rows on the next cycle. Durable progress lives in the event_artifact
+      // rows themselves, so a restart resumes from the database without any extra bookkeeping.
+      let afterID: EventV2.ID | undefined
+      const tick = Effect.suspend(() =>
+        Effect.gen(function* () {
+          let processed = 0
+          for (let step = 0; step < maxEventsPerTick; step++) {
+            const result = yield* events.canonicalizeLegacyArtifacts({
+              ...(afterID ? { afterID } : {}),
+              limit: EventV2.LEGACY_ARTIFACT_BATCH_EVENTS,
+            })
+            processed += result.processed
+            if (!result.next) {
+              afterID = undefined
+              break
+            }
+            afterID = result.next
+          }
+          return processed
+        }),
+      ).pipe(
+        Effect.catchCause((cause) =>
+          Effect.logWarning("legacy event canonicalizer tick failed", { cause: Cause.pretty(cause) }).pipe(
+            Effect.as(0),
+          ),
+        ),
+      )
+      yield* tick
+      yield* tick.pipe(Effect.repeat(Schedule.spaced(pollInterval)), Effect.forkScoped)
+    }),
+  )
+
+export const layer = makeLayer()
+
+export const defaultLayer = layer.pipe(
+  Layer.provide(EventV2.defaultLayer),
+  Layer.provide(RuntimeFlags.defaultLayer),
+)
diff --git a/packages/deepagent-code/src/location-index/runtime.ts b/packages/deepagent-code/src/location-index/runtime.ts
index 3bdfb075..7cf1dfca 100644
--- a/packages/deepagent-code/src/location-index/runtime.ts
+++ b/packages/deepagent-code/src/location-index/runtime.ts
@@ -10,6 +10,7 @@ import { FSUtil } from "@deepagent-code/core/fs-util"
 import { Global } from "@deepagent-code/core/global"
 import { LocationChangeJournal } from "@deepagent-code/core/location-index/change-journal"
 import { LocationCommitLock } from "@deepagent-code/core/location-index/commit-lock"
+import { projectIdForWorkspace } from "@deepagent-code/core/deepagent/durable-knowledge-store"
 import { AbsolutePath } from "@deepagent-code/core/schema"
 import { Context, Effect, Layer } from "effect"
 import { randomUUID } from "node:crypto"
@@ -40,12 +41,16 @@ export const layer = Layer.effect(
     const state = yield* InstanceState.make(
       Effect.fn("LocationIndexRuntime.instance")(function* (instance) {
         if (!flags.locationIndexesV2Shadow) return undefined
+        // Non-git instances resolve to the "global" sentinel project id, which is NOT a valid
+        // observed project for durable authorities: the released-knowledge scope guard pins
+        // context_project_scope_identity.observed_project_id to the canonical durable knowledge
+        // project id. Record that canonical id here so whichever resolver arrives first writes it.
         const identity = yield* identities.resolve({
           boundary: { kind: "implicit_local" },
           directory: AbsolutePath.make(instance.directory),
           project: instance.project.vcs === "git"
             ? { kind: "git", observedProjectId: instance.project.id }
-            : { kind: "registered_root", observedProjectId: instance.project.id },
+            : { kind: "registered_root", observedProjectId: projectIdForWorkspace(instance.directory) },
         })
         const built = yield* Layer.build(
           LocationIndexCoordinator.layer({
diff --git a/packages/deepagent-code/src/permission/index.ts b/packages/deepagent-code/src/permission/index.ts
index e170a358..b57840c7 100644
--- a/packages/deepagent-code/src/permission/index.ts
+++ b/packages/deepagent-code/src/permission/index.ts
@@ -149,13 +149,9 @@ export const layerWith = (options: LayerOptions = {}) =>
         return rotated
       })
       const rotateOwner = Effect.fn("Permission.rotateOwner")(function* () {
-        if (flags.activityAuthority !== "durable")
-          return yield* Effect.die(new Error("durable permission authority is unavailable"))
         return yield* withPermissionOwner(permissionOwnerID().pipe(Effect.flatMap(rotatePermissionOwner)))
       })
       const rotateOwnerIfCurrent = Effect.fn("Permission.rotateOwnerIfCurrent")(function* (expectedOwnerID: string) {
-        if (flags.activityAuthority !== "durable")
-          return yield* Effect.die(new Error("durable permission authority is unavailable"))
         return yield* withPermissionOwner(
           permissionOwnerID().pipe(
             Effect.flatMap((ownerID) =>
@@ -164,20 +160,18 @@ export const layerWith = (options: LayerOptions = {}) =>
           ),
         )
       })
-      if (flags.activityAuthority === "durable") {
-        yield* DeepAgentActivityAuthority.heartbeatPermissionOwner({
-          ownerID: yield* permissionOwnerID(),
-          leaseMs: ownerLeaseMs,
-        }).pipe(Effect.provideService(Database.Service, database), Effect.orDie)
-        yield* Effect.addFinalizer(() =>
-          permissionOwnerID().pipe(
-            Effect.flatMap((ownerID) => DeepAgentActivityAuthority.releasePermissionOwner(ownerID)),
-            withPermissionOwner,
-            Effect.provideService(Database.Service, database),
-            Effect.orDie,
-          ),
-        )
-      }
+      yield* DeepAgentActivityAuthority.heartbeatPermissionOwner({
+        ownerID: yield* permissionOwnerID(),
+        leaseMs: ownerLeaseMs,
+      }).pipe(Effect.provideService(Database.Service, database), Effect.orDie)
+      yield* Effect.addFinalizer(() =>
+        permissionOwnerID().pipe(
+          Effect.flatMap((ownerID) => DeepAgentActivityAuthority.releasePermissionOwner(ownerID)),
+          withPermissionOwner,
+          Effect.provideService(Database.Service, database),
+          Effect.orDie,
+        ),
+      )
       const allPending = new Map<PermissionV1.ID, PendingEntry>()
       const claimPending = (id: PermissionV1.ID, entry: PendingEntry) => {
         if (allPending.get(id) !== entry || entry.settling) return false
@@ -227,40 +221,37 @@ export const layerWith = (options: LayerOptions = {}) =>
         }),
       )
 
-      if (flags.activityAuthority === "durable") {
-        const heartbeat = withPermissionOwner(
-          Effect.gen(function* () {
-            const ownerID = yield* permissionOwnerID()
-            yield* DeepAgentActivityAuthority.heartbeatPermissionOwner({
-              ownerID,
-              leaseMs: ownerLeaseMs,
-            }).pipe(
-              Effect.provideService(Database.Service, database),
-              Effect.catchTag("ActivityAuthority.ConflictError", () =>
-                rotatePermissionOwner(ownerID).pipe(Effect.asVoid),
-              ),
-            )
-            const recoveryOwnerID = yield* permissionOwnerID()
-            yield* DeepAgentActivityAuthority.recoverPendingPermissions(recoveryOwnerID).pipe(
-              Effect.provideService(Database.Service, database),
-            )
-            yield* DeepAgentActivityAuthority.recoverPermissionEffects(recoveryOwnerID).pipe(
-              Effect.provideService(Database.Service, database),
-            )
-          }),
-        )
-        yield* heartbeat.pipe(Effect.orDie)
-        yield* heartbeat.pipe(
-          Effect.catchCause((cause) => Effect.logError("permission owner heartbeat failed", { cause })),
-          Effect.repeat(Schedule.fixed(Duration.millis(ownerHeartbeatMs))),
-          Effect.forkScoped,
-        )
-      }
+      const heartbeat = withPermissionOwner(
+        Effect.gen(function* () {
+          const ownerID = yield* permissionOwnerID()
+          yield* DeepAgentActivityAuthority.heartbeatPermissionOwner({
+            ownerID,
+            leaseMs: ownerLeaseMs,
+          }).pipe(
+            Effect.provideService(Database.Service, database),
+            Effect.catchTag("ActivityAuthority.ConflictError", () =>
+              rotatePermissionOwner(ownerID).pipe(Effect.asVoid),
+            ),
+          )
+          const recoveryOwnerID = yield* permissionOwnerID()
+          yield* DeepAgentActivityAuthority.recoverPendingPermissions(recoveryOwnerID).pipe(
+            Effect.provideService(Database.Service, database),
+          )
+          yield* DeepAgentActivityAuthority.recoverPermissionEffects(recoveryOwnerID).pipe(
+            Effect.provideService(Database.Service, database),
+          )
+        }),
+      )
+      yield* heartbeat.pipe(Effect.orDie)
+      yield* heartbeat.pipe(
+        Effect.catchCause((cause) => Effect.logError("permission owner heartbeat failed", { cause })),
+        Effect.repeat(Schedule.fixed(Duration.millis(ownerHeartbeatMs))),
+        Effect.forkScoped,
+      )
 
       const durableRules = Effect.fn("Permission.durableRules")(function* (
         sessionID: PermissionV1.Request["sessionID"],
       ) {
-        if (flags.activityAuthority !== "durable") return [] as PermissionV1.Rule[]
         const owner = yield* database.db
           .select({ projectID: SessionTable.project_id })
           .from(SessionTable)
@@ -393,37 +384,35 @@ export const layerWith = (options: LayerOptions = {}) =>
         return outcome.value.decision
       })
 
-      if (flags.activityAuthority === "durable") {
-        const reconcileLocalDecisions = Effect.suspend(() =>
-          Effect.forEach(
-            Array.from(allPending.values()),
-            (entry) =>
-              Effect.gen(function* () {
-                if (entry.settling) return
-                const decision = yield* DeepAgentActivityAuthority.permissionDecisionForRequest(entry.info.id).pipe(
-                  Effect.provideService(Database.Service, database),
-                )
-                if (!decision && entry.pendingSettlement && claimPending(entry.info.id, entry)) {
-                  yield* settleClaimed(entry, entry.pendingSettlement.reply, entry.pendingSettlement.message)
-                  return
-                }
-                if (!decision || !claimPending(entry.info.id, entry)) return
-                const adopted = yield* adoptDurableDecision(entry, decision.decision).pipe(Effect.exit)
-                if (Exit.isFailure(adopted)) {
-                  entry.settling = false
-                  return yield* Effect.failCause(adopted.cause)
-                }
-                yield* completeClaimed(entry, adopted.value, decision.feedback)
-              }),
-            { discard: true },
-          ),
-        )
-        yield* reconcileLocalDecisions.pipe(
-          Effect.catchCause((cause) => Effect.logError("permission decision reconciliation failed", { cause })),
-          Effect.repeat(Schedule.fixed(Duration.millis(permissionDecisionPollMs))),
-          Effect.forkScoped,
-        )
-      }
+      const reconcileLocalDecisions = Effect.suspend(() =>
+        Effect.forEach(
+          Array.from(allPending.values()),
+          (entry) =>
+            Effect.gen(function* () {
+              if (entry.settling) return
+              const decision = yield* DeepAgentActivityAuthority.permissionDecisionForRequest(entry.info.id).pipe(
+                Effect.provideService(Database.Service, database),
+              )
+              if (!decision && entry.pendingSettlement && claimPending(entry.info.id, entry)) {
+                yield* settleClaimed(entry, entry.pendingSettlement.reply, entry.pendingSettlement.message)
+                return
+              }
+              if (!decision || !claimPending(entry.info.id, entry)) return
+              const adopted = yield* adoptDurableDecision(entry, decision.decision).pipe(Effect.exit)
+              if (Exit.isFailure(adopted)) {
+                entry.settling = false
+                return yield* Effect.failCause(adopted.cause)
+              }
+              yield* completeClaimed(entry, adopted.value, decision.feedback)
+            }),
+          { discard: true },
+        ),
+      )
+      yield* reconcileLocalDecisions.pipe(
+        Effect.catchCause((cause) => Effect.logError("permission decision reconciliation failed", { cause })),
+        Effect.repeat(Schedule.fixed(Duration.millis(permissionDecisionPollMs))),
+        Effect.forkScoped,
+      )
 
       const askEffect = Effect.fn("Permission.askEffect")(function* (input: AskInput) {
         const owner = yield* InstanceState.get(state)
@@ -444,10 +433,7 @@ export const layerWith = (options: LayerOptions = {}) =>
         let needsAsk = false
 
         for (const pattern of request.patterns) {
-          const rule =
-            flags.activityAuthority === "durable"
-              ? evaluateDurable(request.permission, pattern, ruleset, owner.approved, savedRules)
-              : evaluate(request.permission, pattern, ruleset, owner.approved)
+          const rule = evaluateDurable(request.permission, pattern, ruleset, owner.approved, savedRules)
           log.info("evaluated", { permission: request.permission, pattern, action: rule })
           if (rule.action === "deny") {
             return yield* new PermissionV1.DeniedError({
@@ -458,19 +444,17 @@ export const layerWith = (options: LayerOptions = {}) =>
           needsAsk = true
         }
 
-        if (!needsAsk && flags.activityAuthority !== "durable") return
-
-        const activity =
-          flags.activityAuthority === "durable"
-            ? yield* SessionPromptIntent.activeActivityForSession(request.sessionID).pipe(
-                Effect.provideService(Database.Service, database),
-              )
-            : undefined
-        if (flags.activityAuthority === "durable" && !activity)
-          return yield* new PermissionV1.DeniedError({
-            ruleset: [{ permission: "activity_authority", pattern: request.sessionID, action: "deny" }],
-          })
-        if (flags.activityAuthority === "durable" && requestKind === "tool" && !request.tool)
+        const activity = yield* SessionPromptIntent.activeActivityForSession(request.sessionID).pipe(
+          Effect.provideService(Database.Service, database),
+        )
+        if (!activity) {
+          // The durable authority records requests/decisions against an ADMITTED legacy activity.
+          // A turn driven without one (direct legacy loop entry, recovery edge windows) must not be
+          // hard-denied: fall back to policy-only semantics — allowed requests proceed unrecorded,
+          // interactive requests settle through the in-memory pending path exactly like legacy mode.
+          if (!needsAsk) return
+        }
+        if (activity && requestKind === "tool" && !request.tool)
           return yield* new PermissionV1.DeniedError({
             ruleset: [{ permission: "activity_tool_identity", pattern: request.permission, action: "deny" }],
           })
@@ -623,7 +607,7 @@ export const layerWith = (options: LayerOptions = {}) =>
             const current = yield* InstanceState.context
             const workspaceID = yield* InstanceState.workspaceID
             const existing = allPending.get(input.requestID)
-            if (!existing && flags.activityAuthority === "durable") {
+            if (!existing) {
               const request = yield* DeepAgentActivityAuthority.permissionRequestForRequest(input.requestID).pipe(
                 Effect.provideService(Database.Service, database),
               )
@@ -685,25 +669,20 @@ export const layerWith = (options: LayerOptions = {}) =>
             }
 
             const winnerReply = permissionReplyForDecision(durable)
-            if (flags.activityAuthority === "durable") {
-              if (winnerReply === "reject" && input.reply !== "reject")
-                return yield* new PermissionV1.NotFoundError({ requestID: input.requestID })
-              return
-            }
+            // Durable-backed siblings fan out through the DB (decidePermissionWithFanout + the
+            // reconciliation poller); memory-only entries of the same session (turns without an
+            // admitted activity) still need the in-memory fan-out or they never settle.
             if (winnerReply === "reject") {
-              if (input.reply === "reject") {
-                for (const [id, item] of allPending) {
-                  if (item.info.sessionID !== existing.info.sessionID || !claimPending(id, item)) continue
-                  yield* settleClaimed(item, "reject")
-                }
-              }
               if (input.reply !== "reject") return yield* new PermissionV1.NotFoundError({ requestID: input.requestID })
+              for (const [id, item] of allPending) {
+                if (item.durable || item.info.sessionID !== existing.info.sessionID || !claimPending(id, item)) continue
+                yield* settleClaimed(item, "reject")
+              }
               return
             }
             if (winnerReply === "once") return
-
             for (const [id, item] of allPending) {
-              if (item.info.sessionID !== existing.info.sessionID) continue
+              if (item.durable || item.info.sessionID !== existing.info.sessionID) continue
               const ok = item.info.patterns.every(
                 (pattern) => evaluate(item.info.permission, pattern, item.owner.approved).action === "allow",
               )
@@ -728,7 +707,6 @@ export const layerWith = (options: LayerOptions = {}) =>
         readonly toolCallID: string
         readonly toolName: string
       }) {
-        if (flags.activityAuthority !== "durable") return []
         return yield* DeepAgentActivityAuthority.permissionEffectsForToolCall(input).pipe(
           Effect.provideService(Database.Service, database),
         )
@@ -760,7 +738,6 @@ export const layerWith = (options: LayerOptions = {}) =>
         readonly expectedVersion: number
         readonly terminalReason: string
       }) {
-        if (flags.activityAuthority !== "durable") return false
         return yield* permissionOwnerID().pipe(
           Effect.flatMap((recoveryOwnerID) =>
             DeepAgentActivityAuthority.recoverActivity({
@@ -784,7 +761,9 @@ export const layerWith = (options: LayerOptions = {}) =>
         askEffect,
         effectsForToolCall,
         settleEffect,
-        ...(flags.activityAuthority === "durable" ? { rotateOwner, rotateOwnerIfCurrent, recoverActivity } : {}),
+        rotateOwner,
+        rotateOwnerIfCurrent,
+        recoverActivity,
         reply,
         list,
       })
diff --git a/packages/deepagent-code/src/provider/transform.ts b/packages/deepagent-code/src/provider/transform.ts
index b0266a2a..ee52e808 100644
--- a/packages/deepagent-code/src/provider/transform.ts
+++ b/packages/deepagent-code/src/provider/transform.ts
@@ -4,10 +4,14 @@ import type { JSONSchema7 } from "@ai-sdk/provider"
 import type * as Provider from "./provider"
 import type * as ModelsDev from "@deepagent-code/core/models-dev"
 import { deepagentUpstreamProviderID } from "./compatibility"
+import { ToolPairing } from "@/session/llm/tool-pairing"
 import { iife } from "@/util/iife"
+import { Log } from "@deepagent-code/core/util/log"
 
 type Modality = NonNullable<ModelsDev.Model["modalities"]>["input"][number]
 
+const log = Log.create({ service: "provider-transform" })
+
 function mimeToModality(mime: string): Modality | undefined {
   if (mime.startsWith("image/")) return "image"
   if (mime.startsWith("audio/")) return "audio"
@@ -410,9 +414,47 @@ function unsupportedParts(msgs: ModelMessage[], model: Provider.Model): ModelMes
   })
 }
 
+// Same condition as the mistral scrub inside normalizeMessages; hoisted so
+// message() can tell the tool-pairing repairer to re-bridge tool→user gaps
+// its synthetic tool messages may introduce after the scrub has already run.
+function isMistralModel(model: Provider.Model) {
+  return (
+    model.providerID === "mistral" ||
+    model.api.id.toLowerCase().includes("mistral") ||
+    model.api.id.toLocaleLowerCase().includes("devstral")
+  )
+}
+
 export function message(msgs: ModelMessage[], model: Provider.Model, options: Record<string, unknown>) {
   msgs = unsupportedParts(msgs, model)
   msgs = normalizeMessages(msgs, model, options)
+  // UPD-001: repair tool_use/tool_result pairing (missing results, orphan
+  // results, duplicate callIDs). MUST stay after normalizeMessages: the
+  // mistral toolCallId scrub truncates IDs and can collide distinct IDs into
+  // duplicates that only exist post-scrub, so dedup has to run last. Existing
+  // scrub behavior is untouched.
+  //
+  // UPD-001 telemetry: collect WHAT the repairer changed and emit a structured
+  // record when it changed anything. The receipt's `call_ids` captures the
+  // PRE-repair projection, so a repaired wire body diverges from it; this log
+  // is the correlation that makes that divergence explainable (which call_ids
+  // were synthesized / stripped / deduped before the wire_request_hash was
+  // taken).
+  const pairingReport = ToolPairing.emptyRepairReport()
+  msgs = ToolPairing.repairToolPairing(msgs, {
+    bridgeToolUserGap: isMistralModel(model),
+    report: pairingReport,
+  })
+  if (!ToolPairing.repairReportIsEmpty(pairingReport)) {
+    log.info("tool pairing repaired the wire body (receipt call_ids record the pre-repair projection)", {
+      providerID: model.providerID,
+      modelID: model.id,
+      synthesizedResults: pairingReport.synthesizedResults,
+      strippedOrphanResults: pairingReport.strippedOrphanResults,
+      droppedDuplicates: pairingReport.droppedDuplicates,
+      bridgedToolUserGaps: pairingReport.bridgedToolUserGaps,
+    })
+  }
   if (
     (model.providerID === "anthropic" ||
       model.providerID === "google-vertex-anthropic" ||
diff --git a/packages/deepagent-code/src/server/routes/instance/httpapi/groups/session.ts b/packages/deepagent-code/src/server/routes/instance/httpapi/groups/session.ts
index 8f43cf77..5f94b511 100644
--- a/packages/deepagent-code/src/server/routes/instance/httpapi/groups/session.ts
+++ b/packages/deepagent-code/src/server/routes/instance/httpapi/groups/session.ts
@@ -317,10 +317,49 @@ export const ContextAttemptResolvePayload = Schema.Struct({
   reason: Schema.String,
   riskAcknowledged: Schema.optional(Schema.Boolean),
 })
+// FEAT-005: cohort-level durable aggregation query/result. The window is [sinceMs, untilMs]; untilMs
+// defaults to now when omitted. Result buckets selections by readiness (see diagnostics.cohort).
+export const ContextCohortQuery = Schema.Struct({
+  ...WorkspaceRoutingQueryFields,
+  sinceMs: Schema.NumberFromString,
+  untilMs: Schema.optional(Schema.NumberFromString),
+})
+const ContextCohortGraphStat = Schema.Struct({
+  statuses: Schema.Int,
+  ready: Schema.Int,
+  notReady: Schema.Int,
+})
+export const ContextCohortResult = Schema.Struct({
+  window: Schema.Struct({ sinceMs: Schema.Int, untilMs: Schema.Int }),
+  selections: Schema.Int,
+  sessions: Schema.Int,
+  tokens: Schema.Int,
+  readiness: Schema.Struct({
+    ready: Schema.Int,
+    building: Schema.Int,
+    degraded: Schema.Int,
+    blocked: Schema.Int,
+  }),
+  graphs: Schema.Struct({
+    code: ContextCohortGraphStat,
+    knowledge: ContextCohortGraphStat,
+    memory: ContextCohortGraphStat,
+    documents: ContextCohortGraphStat,
+  }),
+})
 export const ProviderResolutionPayload = Schema.Struct(
   Struct.omit(SessionLegacyProviderResolution.ResolveInput.fields, ["sessionID"]),
 )
 
+export const ImportSnapshotPayload = Schema.Struct({
+  bundle: Schema.String,
+})
+export const ImportSnapshotResult = Schema.Struct({
+  sessionID: Schema.String,
+  messages: Schema.Number,
+  parts: Schema.Number,
+})
+
 export const SessionPaths = {
   list: root,
   status: `${root}/status`,
@@ -357,7 +396,10 @@ export const SessionPaths = {
   updatePart: `${root}/:sessionID/message/:messageID/part/:partID`,
   contextDiagnostics: `${root}/:sessionID/context`,
   contextAttemptResolve: `${root}/:sessionID/context/attempt/:attemptID/resolve`,
+  contextCohort: `${root}/context/cohort`,
   providerResolution: `${root}/:sessionID/provider-resolution`,
+  exportSnapshot: `${root}/:sessionID/export`,
+  importSnapshot: `${root}/import-snapshot`,
 } as const
 
 export const SessionApi = HttpApi.make("session")
@@ -824,6 +866,19 @@ export const SessionApi = HttpApi.make("session")
             description: "Apply an audited abandon, verified-settle, or risk-acknowledged replay decision.",
           }),
         ),
+        HttpApiEndpoint.get("contextCohort", SessionPaths.contextCohort, {
+          query: ContextCohortQuery,
+          success: described(ContextCohortResult, "Cohort-level federated context aggregation"),
+          error: [HttpApiError.BadRequest],
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "session.contextCohort",
+            summary: "Aggregate federated context selections across sessions",
+            description:
+              "FEAT-005: durable cohort aggregation over [sinceMs, untilMs], bucketed by readiness " +
+              "(ready/building/degraded/blocked) so rollout decisions are not skewed by cold-start noise.",
+          }),
+        ),
         HttpApiEndpoint.get("providerResolutionList", SessionPaths.providerResolution, {
           params: { sessionID: SessionID },
           query: WorkspaceRoutingQuery,
@@ -852,6 +907,32 @@ export const SessionApi = HttpApi.make("session")
             description: "Append an audited abandoned resolution and activate a safe successor history epoch.",
           }),
         ),
+        HttpApiEndpoint.get("exportSnapshot", SessionPaths.exportSnapshot, {
+          params: { sessionID: SessionID },
+          success: described(Schema.String, "Session snapshot bundle as a JSON string"),
+          error: [HttpApiError.BadRequest, ApiNotFoundError],
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "session.exportSnapshot",
+            summary: "Export a session snapshot",
+            description:
+              "Export the session's conversation (session + messages + parts) as a self-describing " +
+              "snapshot bundle (JSON). The bundle re-imports on another device as a fresh, continuable session.",
+          }),
+        ),
+        HttpApiEndpoint.post("importSnapshot", SessionPaths.importSnapshot, {
+          payload: ImportSnapshotPayload,
+          success: described(ImportSnapshotResult, "Imported session summary"),
+          error: [HttpApiError.BadRequest],
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "session.importSnapshot",
+            summary: "Import a session snapshot",
+            description:
+              "Import a previously exported session bundle into the current instance as a fresh, " +
+              "continuable session (new IDs, re-rooted to the current project/directory).",
+          }),
+        ),
       )
       .annotateMerge(
         OpenApi.annotations({
diff --git a/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/deepagent.ts b/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/deepagent.ts
index 63712f10..32e93550 100644
--- a/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/deepagent.ts
+++ b/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/deepagent.ts
@@ -1,8 +1,12 @@
 import path from "node:path"
-import * as nodeFs from "node:fs"
+import { createHash } from "node:crypto"
+import { sql } from "drizzle-orm"
 import * as Log from "@deepagent-code/core/util/log"
 import { Config } from "@/config/config"
 import { configureGateway, reviewRunsDir } from "@/deepagent/config"
+import { readPinnedPacks, writePinnedPacks } from "@deepagent-code/core/deepagent/pinned-packs"
+import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
 import { buildProfile } from "@/deepagent/profile-detector"
 import { HttpApiBuilder } from "effect/unstable/httpapi"
 import { Effect } from "effect"
@@ -106,6 +110,70 @@ const projectPlanReceipt = (receipt: PlanEditReceipt) => ({
 
 const dbgLog = Log.create({ service: "deepagent.packs.debug" })
 
+// FEAT-003 — pack pin/unpin eventing: after the pinned-set file is durably written, the handler
+// publishes `pack.changed` so downstream surfaces are NOT left waiting for their next natural
+// recomputation. BENEFIT BOUNDARY (must not be widened without review — mirrors the
+// LMNEvents.PACK_CHANGED contract):
+//   - the federation four graphs do NOT read pack scope (the knowledge adapter only ever consumes
+//     released snapshots) — no federation-side reaction is expected from this event;
+//   - intended consumers are legacy retrieval-surface audit + UI notification, subscribing on demand.
+//     This producer only guarantees the event is emitted and subscribable; no consumer is added here.
+//
+// IDEMPOTENCY KEY = hash of the AFTER-WRITE pinned set (workspace-scoped): repeated pin/unpin clicks
+// that leave the SAME set never re-publish (the bus dedupes on idempotency_key). `action` is folded in
+// so a pin/unpin pair passing through the same set is not swallowed, and the workspace path is hashed
+// in so identical sets in different workspaces never collide on the shared bus DB.
+export const packChangedIdempotencyKey = (input: {
+  readonly workspacePath: string
+  readonly action: "pin" | "unpin"
+  readonly pinnedIds: readonly string[]
+}): string => {
+  const sha = (value: string) => createHash("sha256").update(value).digest("hex")
+  const setHash = sha([...new Set(input.pinnedIds)].sort().join(","))
+  return `pack.changed:${sha(input.workspacePath)}:${input.action}:${setHash}`
+}
+
+// Publish pack.changed for a committed pin/unpin. BEST-EFFORT: the pinned-set file write already
+// succeeded and stays authoritative — a bus failure must never fail the route (log, never throw).
+export const publishPackChanged = (
+  bus: DeepAgentEventBus.Interface,
+  input: {
+    readonly workspacePath: string
+    readonly packId: string
+    readonly action: "pin" | "unpin"
+    readonly pinnedIds: readonly string[]
+  },
+): Effect.Effect<void> =>
+  bus
+    .publish({
+      type: LMNEvents.PACK_CHANGED,
+      source: "system",
+      workspaceID: input.workspacePath,
+      actorID: SERVER_USER_ID,
+      idempotencyKey: packChangedIdempotencyKey(input),
+      priority: "normal",
+      payload: {
+        workspacePath: input.workspacePath,
+        packId: input.packId,
+        action: input.action,
+        pinnedIds: [...new Set(input.pinnedIds)].sort(),
+      },
+    })
+    .pipe(
+      Effect.asVoid,
+      Effect.catchCause((cause) =>
+        Effect.logError("pack.changed publish failed (pin/unpin file write already committed)").pipe(
+          Effect.annotateLogs({
+            reason: "publish_error",
+            workspacePath: input.workspacePath,
+            packId: input.packId,
+            action: input.action,
+            cause: String(cause),
+          }),
+        ),
+      ),
+    )
+
 // §C.4 — the server-side ceiling on Expert-Panel debate rounds a single consult may request. Round 1
 // plus up to 2 debate rounds: enough for opinions to converge (the orchestrator also early-stops on a
 // stable verdict distribution) while bounding the fan-out (one subagent turn per lens per round).
@@ -152,6 +220,9 @@ export const deepagentHandlers = HttpApiBuilder.group(InstanceHttpApi, "deepagen
     const goals = yield* GoalManager.Service
     const database = yield* Database.Service
     const locationIdentity = yield* LocationIdentity.Service
+    // FEAT-003 — the §A2 bus packsPin/packsUnpin publish pack.changed onto. Available at this layer
+    // (the route runtime provides DeepAgentEventBus.defaultLayer — same seam the IM handlers use).
+    const eventBus = yield* DeepAgentEventBus.Service
 
     // Build a reviewer-subagent turn runner scoped to a session — the panelist seam consultPanel needs.
     // Reuses makeTaskSubagentRunner (the same child-session + permission-derivation path the goal loop
@@ -454,18 +525,31 @@ export const deepagentHandlers = HttpApiBuilder.group(InstanceHttpApi, "deepagen
     })
 
     const releasedScope = Effect.fn("DeepAgentHttpApi.releasedScope")(function* (dir: string) {
+      const legacyProjectId = AgentGateway.DeepAgentDurableKnowledgeStore.projectIdForWorkspace(dir)
       const identity = yield* locationIdentity.resolve({
         boundary: { kind: "implicit_local" },
         directory: AbsolutePath.make(dir),
         project: {
           kind: "registered_root",
-          observedProjectId: AgentGateway.DeepAgentDurableKnowledgeStore.projectIdForWorkspace(dir),
+          observedProjectId: legacyProjectId,
         },
       })
+      // Self-heal scope identities recorded before the canonical observed-project convention (e.g.
+      // the location-index shadow once wrote the "global" sentinel project id): the released-scope
+      // guard pins observed_project_id to the canonical durable knowledge project id.
+      if (identity.observedProjectId !== legacyProjectId) {
+        yield* database.db.run(
+          sql`UPDATE context_project_scope_identity SET observed_project_id = ${legacyProjectId}
+              WHERE security_namespace_id = ${identity.securityNamespaceId}
+                AND project_scope_key = ${identity.projectScopeKey}
+                AND project_kind = 'registered_root'
+                AND retired_at IS NULL`,
+        )
+      }
       return {
         securityNamespaceId: identity.securityNamespaceId,
         projectScopeKey: identity.projectScopeKey,
-        legacyProjectId: AgentGateway.DeepAgentDurableKnowledgeStore.projectIdForWorkspace(dir),
+        legacyProjectId,
       }
     })
 
@@ -605,20 +689,10 @@ export const deepagentHandlers = HttpApiBuilder.group(InstanceHttpApi, "deepagen
     })
 
     // docs/34 §9 S10: pinned packs persist per-workspace as a small JSON file under the memory dir.
-    const pinnedPacksFile = (memoryDir: string) => path.join(memoryDir, "pinned-packs.json")
-    const readPinned = (memoryDir: string): string[] => {
-      try {
-        const raw = nodeFs.readFileSync(pinnedPacksFile(memoryDir), "utf8")
-        const arr = JSON.parse(raw)
-        return Array.isArray(arr) ? arr.filter((x): x is string => typeof x === "string") : []
-      } catch {
-        return []
-      }
-    }
-    const writePinned = (memoryDir: string, ids: readonly string[]): void => {
-      nodeFs.mkdirSync(memoryDir, { recursive: true })
-      nodeFs.writeFileSync(pinnedPacksFile(memoryDir), JSON.stringify([...new Set(ids)].sort(), null, 2), "utf8")
-    }
+    // FEAT-001: read/write live in the shared core module so the gateway runtime reads the exact
+    // same file the control plane writes (readPinnedPacks is fault-tolerant: missing/corrupt => []).
+    const readPinned = (memoryDir: string): string[] => readPinnedPacks(memoryDir)
+    const writePinned = (memoryDir: string, ids: readonly string[]): void => writePinnedPacks(memoryDir, ids)
 
     const packsActive = Effect.fn("DeepAgentHttpApi.packsActive")(function* () {
       const dir = yield* workspaceDir()
@@ -704,29 +778,49 @@ export const deepagentHandlers = HttpApiBuilder.group(InstanceHttpApi, "deepagen
 
     const packsPin = Effect.fn("DeepAgentHttpApi.packsPin")(function* (ctx) {
       const memoryDir = yield* workspaceMemoryDir()
-      return yield* Effect.try({
+      const workspacePath = yield* workspaceDir()
+      // FEAT-003: write first (file stays authoritative), then publish pack.changed with the
+      // AFTER-WRITE set — the idempotency key is that set's hash, so re-clicks dedupe on the bus.
+      const pinnedIds = yield* Effect.try({
         try: () => {
           writePinned(memoryDir, [...readPinned(memoryDir), ctx.payload.packId])
-          return { ok: true, packId: ctx.payload.packId }
+          return readPinned(memoryDir)
         },
         catch: (error) =>
           new DeepAgentPromotionError({ message: error instanceof Error ? error.message : String(error) }),
       })
+      yield* publishPackChanged(eventBus, {
+        workspacePath,
+        packId: ctx.payload.packId,
+        action: "pin",
+        pinnedIds,
+      })
+      return { ok: true, packId: ctx.payload.packId }
     })
 
     const packsUnpin = Effect.fn("DeepAgentHttpApi.packsUnpin")(function* (ctx) {
       const memoryDir = yield* workspaceMemoryDir()
-      return yield* Effect.try({
+      const workspacePath = yield* workspaceDir()
+      // FEAT-003: same contract as packsPin — the event fires even when unpinning the LAST pack
+      // (the after-write set is empty; its hash is still a valid, publishable key).
+      const pinnedIds = yield* Effect.try({
         try: () => {
           writePinned(
             memoryDir,
             readPinned(memoryDir).filter((id) => id !== ctx.payload.packId),
           )
-          return { ok: true, packId: ctx.payload.packId }
+          return readPinned(memoryDir)
         },
         catch: (error) =>
           new DeepAgentPromotionError({ message: error instanceof Error ? error.message : String(error) }),
       })
+      yield* publishPackChanged(eventBus, {
+        workspacePath,
+        packId: ctx.payload.packId,
+        action: "unpin",
+        pinnedIds,
+      })
+      return { ok: true, packId: ctx.payload.packId }
     })
 
     // V3.8.1 §G environment-fact use-gate handlers. The adoption service roots at the same gateway
diff --git a/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/session.ts b/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/session.ts
index 9292cdcd..690fdde1 100644
--- a/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/session.ts
+++ b/packages/deepagent-code/src/server/routes/instance/httpapi/handlers/session.ts
@@ -31,12 +31,14 @@ import { InstanceHttpApi } from "../api"
 import {
   CommandPayload,
   ContextAttemptResolvePayload,
+  ContextCohortQuery,
   DiffArtifactFileQuery,
   DiffArtifactMaintenancePayload,
   DiffArtifactManifestQuery,
   DiffQuery,
   ForkPayload,
   InitPayload,
+  ImportSnapshotPayload,
   LegacyForkPayload,
   ListQuery,
   MessagesQuery,
@@ -49,11 +51,13 @@ import {
   SummarizePayload,
   UpdatePayload,
 } from "../groups/session"
-import { ConflictError, PermissionNotFoundError, ServiceUnavailableError, notFound } from "../errors"
+import { ApiNotFoundError, ConflictError, PermissionNotFoundError, ServiceUnavailableError, notFound } from "../errors"
 import * as SessionError from "./session-errors"
 import { randomUUID } from "node:crypto"
 import { getWorkspaceContext } from "../utils/workspace-context"
 import { SessionDiffArtifact } from "@/session/diff-artifact"
+import { exportSessionSnapshot, importSessionSnapshot, type SessionSnapshot } from "@/session/snapshot"
+import { InstanceState } from "@/effect/instance-state"
 
 const tryParseJson = (text: string) =>
   Effect.try({
@@ -719,6 +723,14 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
       return resolved
     })
 
+    const contextCohort = Effect.fn("SessionHttpApi.contextCohort")(function* (ctx: {
+      query: typeof ContextCohortQuery.Type
+    }) {
+      return yield* contextDiagnosticsSvc
+        .cohort({ sinceMs: ctx.query.sinceMs, ...(ctx.query.untilMs != null ? { untilMs: ctx.query.untilMs } : {}) })
+        .pipe(Effect.mapError(() => new HttpApiError.BadRequest({})))
+    })
+
     const providerResolutionList = Effect.fn("SessionHttpApi.providerResolutionList")(function* (ctx: {
       params: { sessionID: SessionID }
     }) {
@@ -745,6 +757,35 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
         )
     })
 
+    const exportSnapshot = Effect.fn("SessionHttpApi.exportSnapshot")(function* (ctx: {
+      params: { sessionID: SessionID }
+    }) {
+      yield* requireSession(ctx.params.sessionID)
+      const bundle = yield* exportSessionSnapshot(ctx.params.sessionID).pipe(
+        Effect.mapError(() => notFound(`session not found: ${ctx.params.sessionID}`)),
+      )
+      return JSON.stringify(bundle)
+    })
+
+    const importSnapshot = Effect.fn("SessionHttpApi.importSnapshot")(function* (ctx: {
+      payload: typeof ImportSnapshotPayload.Type
+    }) {
+      const snapshot = yield* tryParseJson(ctx.payload.bundle).pipe(
+        Effect.flatMap((raw) =>
+          Effect.try({
+            try: () => raw as SessionSnapshot,
+            catch: () => new HttpApiError.BadRequest({}),
+          }),
+        ),
+      )
+      const instanceCtx = yield* InstanceState.context
+      return yield* importSessionSnapshot({
+        snapshot,
+        projectID: instanceCtx.project.id,
+        directory: instanceCtx.directory,
+      }).pipe(Effect.mapError(() => new HttpApiError.BadRequest({})))
+    })
+
     return handlers
       .handle("list", list)
       .handle("status", status)
@@ -782,7 +823,10 @@ export const sessionHandlers = HttpApiBuilder.group(InstanceHttpApi, "session",
       .handle("updatePart", updatePart)
       .handle("contextDiagnostics", contextDiagnostics)
       .handle("contextAttemptResolve", contextAttemptResolve)
+      .handle("contextCohort", contextCohort)
       .handle("providerResolutionList", providerResolutionList)
       .handle("providerResolutionResolve", providerResolutionResolve)
+      .handle("exportSnapshot", exportSnapshot)
+      .handle("importSnapshot", importSnapshot)
   }),
 )
diff --git a/packages/deepagent-code/src/server/routes/instance/httpapi/public.ts b/packages/deepagent-code/src/server/routes/instance/httpapi/public.ts
index c3a41f1c..98fd737f 100644
--- a/packages/deepagent-code/src/server/routes/instance/httpapi/public.ts
+++ b/packages/deepagent-code/src/server/routes/instance/httpapi/public.ts
@@ -286,6 +286,11 @@ function applyLegacySchemaOverrides(spec: OpenApiSpec) {
   const model = schemas.ProviderConfig?.properties?.models?.additionalProperties
   const variants = typeof model === "object" ? model.properties?.variants?.additionalProperties : undefined
   if (variants && typeof variants === "object") variants.additionalProperties = {}
+  // PARITY-004 模型启停服务端真相源:服务端 ConfigV2.Model 已支持 per-model `disabled`
+  // (plugin/provider.ts 映射 model.enabled=!disabled),但 OpenAPI 生成源未暴露该字段;
+  // 在此补齐,使 SDK Config 类型可读写 per-model disabled(与运行时行为一致)。
+  if (model && typeof model === "object" && model.properties && !model.properties.disabled)
+    model.properties.disabled = { type: "boolean" }
   const syncInfo = schemas.SyncEventSessionUpdated?.properties?.data?.properties?.info
   if (syncInfo?.properties) makePropertiesNullable(syncInfo.properties)
 }
diff --git a/packages/deepagent-code/src/session/__tests__/snapshot.test.ts b/packages/deepagent-code/src/session/__tests__/snapshot.test.ts
new file mode 100644
index 00000000..299c984a
--- /dev/null
+++ b/packages/deepagent-code/src/session/__tests__/snapshot.test.ts
@@ -0,0 +1,367 @@
+import { describe, expect, it } from "bun:test"
+import { Effect, Layer } from "effect"
+import { asc, eq, sql } from "drizzle-orm"
+import { randomBytes } from "node:crypto"
+import { Database } from "@deepagent-code/core/database/database"
+import { MessageTable, PartTable, SessionTable } from "@deepagent-code/core/session/sql"
+import {
+  ProjectScopeIdentityTable,
+  SecurityNamespaceTable,
+} from "@deepagent-code/core/context-federation/sql"
+import { SessionProviderOwnerLeaseTable } from "@deepagent-code/core/context-federation/session-sql"
+import { SessionActivityProgressTable, SessionLegacyActivityTable } from "../activity-sql"
+import { SessionToolRequestReceiptTable } from "../tool-request-receipt.sql"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { exportSessionSnapshot, importSessionSnapshot, SNAPSHOT_FORMAT, type SessionSnapshot } from "../snapshot"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+
+const EMPTY_REFS_FINGERPRINT = "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945"
+const randomHex = (n: number) => randomBytes(n).toString("hex")
+
+function withDb(dbPath: string, program: Effect.Effect<any, any, any>): Promise<any> {
+  const database = Database.layerFromPath(dbPath)
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  return Effect.runPromise(program.pipe(Effect.provide(database as any)) as any)
+}
+
+const PROJECT_ID = "proj_snap"
+const DIRECTORY = "/tmp/snap-proj"
+const NS_ID = "ns_seed"
+const SCOPE_KEY = "scope_seed"
+const OWNER_TOKEN = "owner_seed_token"
+
+/** Seed authority rows (owner lease + security namespace + scope identity) for receipt triggers. */
+function seedAuthority(db: any) {
+  return Effect.gen(function* () {
+    const now = Date.now()
+    yield* db
+      .insert(SecurityNamespaceTable)
+      .values([{ id: NS_ID, kind: "implicit_local", binding_hash: randomHex(32), created_at: now, retired_at: null }] as never)
+      .onConflictDoNothing()
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(ProjectScopeIdentityTable)
+      .values(
+        [
+          {
+            security_namespace_id: NS_ID,
+            project_scope_key: SCOPE_KEY,
+            project_kind: "registered_root",
+            project_identity_hash: randomHex(32),
+            created_at: now,
+            retired_at: null,
+          },
+        ] as never,
+      )
+      .onConflictDoNothing()
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionProviderOwnerLeaseTable)
+      .values(
+        [
+          {
+            owner_token: OWNER_TOKEN,
+            registered_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`,
+            heartbeat_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`,
+            lease_expires_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 3600000`,
+            released_at: null,
+          },
+        ] as never,
+      )
+      .onConflictDoNothing()
+      .run()
+      .pipe(Effect.orDie)
+  })
+}
+
+/** Seed session row + 2 messages + 4 parts. */
+function seedConversation(db: any, sessionID: string) {
+  return Effect.gen(function* () {
+    yield* db
+      .insert(ProjectTable)
+      .values([{ id: PROJECT_ID, worktree: DIRECTORY, sandboxes: [] }] as never)
+      .onConflictDoNothing()
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionTable)
+      .values(
+        [
+          {
+            id: sessionID,
+            project_id: PROJECT_ID,
+            slug: "snap",
+            directory: DIRECTORY,
+            title: "快照测试会话",
+            version: "test",
+            model: { id: "deepseek-chat", providerID: "deepseek" },
+            time_created: 1_782_870_400_000,
+            time_updated: 1_782_870_410_000,
+          },
+        ] as never,
+      )
+      .run()
+      .pipe(Effect.orDie)
+    const userMsg = `${sessionID}_msg_user`
+    const asstMsg = `${sessionID}_msg_asst`
+    yield* db
+      .insert(MessageTable)
+      .values([
+        { id: userMsg, session_id: sessionID, time_created: 1_782_870_401_000, time_updated: 1_782_870_401_000, data: { role: "user" } },
+        {
+          id: asstMsg,
+          session_id: sessionID,
+          time_created: 1_782_870_402_000,
+          time_updated: 1_782_870_405_000,
+          data: { role: "assistant", model: { providerID: "deepseek", modelID: "deepseek-chat" } },
+        },
+      ] as never)
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(PartTable)
+      .values([
+        { id: `${sessionID}_p_u`, message_id: userMsg, session_id: sessionID, time_created: 1_782_870_401_000, time_updated: 1_782_870_401_000, data: { type: "text", text: "hello world" } },
+        { id: `${sessionID}_p_r`, message_id: asstMsg, session_id: sessionID, time_created: 1_782_870_402_000, time_updated: 1_782_870_402_000, data: { type: "reasoning", text: "thinking" } },
+        { id: `${sessionID}_p_t`, message_id: asstMsg, session_id: sessionID, time_created: 1_782_870_403_000, time_updated: 1_782_870_403_000, data: { type: "text", text: "print('hi')" } },
+        { id: `${sessionID}_p_tool`, message_id: asstMsg, session_id: sessionID, time_created: 1_782_870_404_000, time_updated: 1_782_870_404_000, data: { type: "tool", callID: "c1", tool: "bash", state: { status: "completed", input: { command: "echo hi" }, output: "hi" } } },
+      ] as never)
+      .run()
+      .pipe(Effect.orDie)
+    return { userMsg, asstMsg }
+  })
+}
+
+/**
+ * Seed one activity + one progress revision honoring the state-machine triggers:
+ * insert activity(active) -> synthetic receipt (satisfying receipt triggers) -> progress ->
+ * (optionally) terminalize. FK off only for the placeholder trigger_admission_id.
+ */
+function seedActivity(db: any, sessionID: string, asstMsg: string, userMsg: string, opts: { leaveActive?: boolean } = {}) {
+  const activityID = `${sessionID}_act`
+  const receiptID = `${sessionID}_rcpt`
+  return Effect.acquireUseRelease(
+    db.run("PRAGMA foreign_keys = OFF").pipe(Effect.orDie),
+    () =>
+      Effect.gen(function* () {
+        yield* db
+          .insert(SessionLegacyActivityTable)
+          .values(
+            [
+              {
+                activity_id: activityID,
+                session_id: sessionID,
+                ordinal: 0,
+                trigger_admission_id: `${sessionID}_adm`,
+                owner_token: OWNER_TOKEN,
+                state: "active",
+                terminal_reason: null,
+                created_at: 1_782_870_401_000,
+                settled_at: null,
+              },
+            ] as never,
+          )
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .insert(SessionToolRequestReceiptTable)
+          .values(
+            [
+              {
+                receipt_id: receiptID,
+                request_ordinal: 1,
+                session_id: sessionID,
+                user_message_id: userMsg,
+                assistant_message_id: asstMsg,
+                provider_id: "deepseek",
+                model_id: "deepseek-chat",
+                registry_tool_ids: [],
+                permission_filtered_tool_ids: [],
+                final_offered_tool_ids: [],
+                call_ids: [],
+                provider_state: "preparing",
+                request_state: "prepared",
+                owner_token: OWNER_TOKEN,
+                released_knowledge_security_namespace_id: NS_ID,
+                released_knowledge_project_scope_key: SCOPE_KEY,
+                released_knowledge_binding_state: "unavailable",
+                released_knowledge_exact_refs: [],
+                released_knowledge_exact_refs_fingerprint: EMPTY_REFS_FINGERPRINT,
+                created_at: 1_782_870_402_000,
+              },
+            ] as never,
+          )
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .insert(SessionActivityProgressTable)
+          .values(
+            [
+              {
+                activity_id: activityID,
+                revision: 0,
+                assistant_message_id: asstMsg,
+                text_part_id: null,
+                provider_receipt_id: receiptID,
+                input_membership_ordinal: 0,
+                state: "final",
+                created_at: 1_782_870_402_000,
+                settled_at: 1_782_870_405_000,
+              },
+            ] as never,
+          )
+          .run()
+          .pipe(Effect.orDie)
+        if (!opts.leaveActive) {
+          yield* db
+            .update(SessionLegacyActivityTable)
+            .set({ state: "settled", settled_at: 1_782_870_405_000, terminal_reason: "stop" } as never)
+            .where(eq(SessionLegacyActivityTable.activity_id, activityID as never))
+            .run()
+            .pipe(Effect.orDie)
+        }
+        return activityID
+      }),
+    () => db.run("PRAGMA foreign_keys = ON").pipe(Effect.orDie),
+  )
+}
+
+const messagesOf = (db: any, sessionID: string) =>
+  db
+    .select()
+    .from(MessageTable)
+    .where(eq(MessageTable.session_id, sessionID as never))
+    .orderBy(asc(MessageTable.time_created))
+    .all()
+    .pipe(Effect.orDie)
+const partsOf = (db: any, sessionID: string) =>
+  db.select().from(PartTable).where(eq(PartTable.session_id, sessionID as never)).all().pipe(Effect.orDie)
+const sessionRow = (db: any, sessionID: string) =>
+  db.select().from(SessionTable).where(eq(SessionTable.id, sessionID as never)).get().pipe(Effect.orDie)
+const activitiesOf = (db: any, sessionID: string) =>
+  db
+    .select()
+    .from(SessionLegacyActivityTable)
+    .where(eq(SessionLegacyActivityTable.session_id, sessionID as never))
+    .all()
+    .pipe(Effect.orDie)
+const progressOf = (db: any, activityID: string) =>
+  db
+    .select()
+    .from(SessionActivityProgressTable)
+    .where(eq(SessionActivityProgressTable.activity_id, activityID as never))
+    .all()
+    .pipe(Effect.orDie)
+
+describe("session snapshot export/import (complete scene + continue)", () => {
+  it("round-trips conversation + activity markers with fresh IDs and consistent ownership", async () => {
+    const dbPath = join(tmpdir(), `snap-rt-${Date.now()}.sqlite`)
+    await withDb(
+      dbPath,
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        const srcID = "ses_src_rt"
+        yield* seedAuthority(db)
+        const { userMsg, asstMsg } = yield* seedConversation(db, srcID)
+        const srcActivityID = yield* seedActivity(db, srcID, asstMsg, userMsg)
+
+        const snapshot = yield* exportSessionSnapshot(srcID)
+        expect(snapshot.format).toBe(SNAPSHOT_FORMAT)
+        expect(snapshot.messages.length).toBe(2)
+        expect(snapshot.parts.length).toBe(4)
+        expect(snapshot.activities.length).toBe(1)
+        expect(snapshot.progress.length).toBe(1)
+
+        const parsed = JSON.parse(JSON.stringify(snapshot))
+        const imported = yield* importSessionSnapshot({ snapshot: parsed, projectID: PROJECT_ID, directory: DIRECTORY })
+        const newID = imported.sessionID
+        expect(newID).not.toBe(srcID)
+
+        // conversation reconstructed with fresh IDs
+        const msgs = yield* messagesOf(db, newID)
+        expect(msgs.length).toBe(2)
+        expect(msgs[0].data.role).toBe("user")
+        expect(msgs[1].data.role).toBe("assistant")
+        expect(msgs[1].id).not.toBe(asstMsg)
+        const parts = yield* partsOf(db, newID)
+        expect(parts.length).toBe(4)
+
+        // activity + progress reconstructed with a fresh activity_id, terminal state preserved
+        const acts = yield* activitiesOf(db, newID)
+        expect(acts.length).toBe(1)
+        expect(acts[0].activity_id).not.toBe(srcActivityID)
+        expect(acts[0].state).toBe("settled")
+        const prog = yield* progressOf(db, acts[0].activity_id)
+        expect(prog.length).toBe(1)
+        // progress.assistant_message_id remapped to the NEW assistant message
+        expect(prog[0].assistant_message_id).toBe(msgs[1].id)
+        // ownership consistency required by message-v2.ts:419
+        expect(acts[0].session_id).toBe(msgs[1].session_id)
+        // no active activity remains -> continuable
+        expect(acts.some((a: any) => a.state === "active")).toBe(false)
+      }),
+    )
+  })
+
+  it("guarantees continue: a mid-run (active) source is terminalized, no active activity remains", async () => {
+    const dbPath = join(tmpdir(), `snap-cont-${Date.now()}.sqlite`)
+    await withDb(
+      dbPath,
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        const srcID = "ses_src_midrun"
+        yield* seedAuthority(db)
+        const { userMsg, asstMsg } = yield* seedConversation(db, srcID)
+        yield* seedActivity(db, srcID, asstMsg, userMsg, { leaveActive: true })
+        const srcActs = yield* activitiesOf(db, srcID)
+        expect(srcActs.some((a: any) => a.state === "active")).toBe(true)
+
+        const snapshot = yield* exportSessionSnapshot(srcID)
+        const imported = yield* importSessionSnapshot({ snapshot, projectID: PROJECT_ID, directory: DIRECTORY })
+        const newID = imported.sessionID
+
+        const session = yield* sessionRow(db, newID)
+        expect(session).toBeTruthy()
+        const acts = yield* activitiesOf(db, newID)
+        expect(acts.length).toBe(1)
+        // the active source activity is terminalized -> no active activity -> continuable
+        expect(acts.some((a: any) => a.state === "active")).toBe(false)
+        expect(acts[0].state).toBe("interrupted")
+        expect(acts[0].terminal_reason).toBe("imported_snapshot")
+        const msgs = yield* messagesOf(db, newID)
+        expect(msgs.length).toBe(2)
+      }),
+    )
+  })
+
+  it("rejects an invalid format/version", async () => {
+    const dbPath = join(tmpdir(), `snap-bad-${Date.now()}.sqlite`)
+    const snapshot = (await withDb(
+      dbPath,
+      Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        const srcID = "ses_src_bad"
+        yield* seedAuthority(db)
+        const { userMsg, asstMsg } = yield* seedConversation(db, srcID)
+        yield* seedActivity(db, srcID, asstMsg, userMsg)
+        return yield* exportSessionSnapshot(srcID)
+      }),
+    )) as SessionSnapshot
+
+    const badFormat = importSessionSnapshot({
+      snapshot: { ...snapshot, format: "other" as never },
+      projectID: PROJECT_ID,
+      directory: DIRECTORY,
+    })
+    await expect(withDb(dbPath, badFormat)).rejects.toBeTruthy()
+    const badVersion = importSessionSnapshot({
+      snapshot: { ...snapshot, format_version: 99 },
+      projectID: PROJECT_ID,
+      directory: DIRECTORY,
+    })
+    await expect(withDb(dbPath, badVersion)).rejects.toBeTruthy()
+  })
+})
diff --git a/packages/deepagent-code/src/session/activity-crash-test.ts b/packages/deepagent-code/src/session/activity-crash-test.ts
index 4602d9ef..e7a98dfb 100644
--- a/packages/deepagent-code/src/session/activity-crash-test.ts
+++ b/packages/deepagent-code/src/session/activity-crash-test.ts
@@ -11,6 +11,10 @@ export type Point =
   | "inside_revision_terminal_transaction"
   | "after_terminal_commit_before_publish"
   | "while_finalizing_before_follow_up_drain"
+  // BUG-407-008 §6.2 crash points (P1/P2/P6).
+  | "after_begin_progress_commit_before_provisional_event"
+  | "after_provisional_event_before_provider_dispatch"
+  | "after_progress_settle_before_next_admission"
 
 export function pause(point: Point) {
   if (process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT !== point) return Effect.void
diff --git a/packages/deepagent-code/src/session/agent-handoff-consumer.ts b/packages/deepagent-code/src/session/agent-handoff-consumer.ts
index 1c70030b..6b64e25e 100644
--- a/packages/deepagent-code/src/session/agent-handoff-consumer.ts
+++ b/packages/deepagent-code/src/session/agent-handoff-consumer.ts
@@ -4,6 +4,7 @@ import { Cause, Context, Deferred, Duration, Effect, Layer, Option, Schedule, Sc
 import { AgentExecution } from "@deepagent-code/core/deepagent/agent-execution"
 import { DeepAgentEvent } from "@deepagent-code/core/deepagent/deepagent-event"
 import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { HandoffAdmission } from "@deepagent-code/core/deepagent/handoff-admission"
 import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
 import { SecurityGate } from "@deepagent-code/core/deepagent/security-gate"
 import { SecurityResolvers } from "@deepagent-code/core/deepagent/security-resolvers"
@@ -19,6 +20,11 @@ export const DEFAULT_RETRY_PUMP_INTERVAL_MS = 30_000
 
 type Outcome = "accepted" | "rejected" | "ignored" | "retrying"
 type Handoff = Extract<DeepAgentEvent.AgentCoordinationEvent, { readonly type: "agent.handoff.requested" }>
+// FEAT-008: when the retry pump drives a redelivery it carries its claim identity — the claimant id
+// is stamped on the admission receipt, and the delivery is settled via the TOKEN-conditioned
+// ackClaim/nackClaim so a stale pump (lease lapsed, row re-claimed) can no longer settle a delivery
+// its successor already owns. The live-subscription path has no claim and keeps plain ack/nack.
+type Claim = { readonly claimantId: string; readonly claimToken: string }
 
 export interface Interface {
   readonly handle: (event: DeepAgentEvent.Event) => Effect.Effect<Outcome>
@@ -45,15 +51,35 @@ export const layerWith = (options?: LayerOptions) =>
     Effect.gen(function* () {
       const bus = yield* DeepAgentEventBus.Service
       const execution = yield* AgentExecution.Service
+      const admission = yield* HandoffAdmission.Service
       const agents = yield* AgentListProviderService
       const security = yield* SecurityResolvers.Service
       const flags = yield* RuntimeFlags.Service
       const runLoop = options?.runLoop ?? true
       const retryPumpIntervalMs = options?.retryPumpIntervalMs ?? DEFAULT_RETRY_PUMP_INTERVAL_MS
 
-      const ack = (event: DeepAgentEvent.Event) => bus.ack(HANDOFF_GROUP, event.id)
+      // Settle the (event, group) delivery. Under a claim the settle is TOKEN-conditioned: a false
+      // ackClaim means the lease lapsed and a successor claimant now owns the row — log and move on;
+      // the business side effects (accept/reject + receipt) are idempotent by construction.
+      const settleDelivery = (event: DeepAgentEvent.Event, claim?: Claim) =>
+        claim
+          ? bus
+              .ackClaim({ subscriptionGroup: HANDOFF_GROUP, eventID: event.id, claimToken: claim.claimToken })
+              .pipe(
+                Effect.tap((applied) =>
+                  applied
+                    ? Effect.void
+                    : Effect.sync(() =>
+                        log.warn("handoff delivery claim stale at ack; successor owns the row", {
+                          eventID: event.id,
+                        }),
+                      ),
+                ),
+                Effect.asVoid,
+              )
+          : bus.ack(HANDOFF_GROUP, event.id)
 
-      const reject = (event: DeepAgentEvent.Event, handoff: Handoff, reason: string) =>
+      const reject = (event: DeepAgentEvent.Event, handoff: Handoff, reason: string, claim?: Claim) =>
         execution
           .rejectHandoff({
             workspaceID: event.workspaceID,
@@ -65,27 +91,51 @@ export const layerWith = (options?: LayerOptions) =>
             toAgentID: handoff.toAgentID,
             reason,
           })
-          .pipe(Effect.andThen(ack(event)), Effect.as("rejected" as const))
+          .pipe(
+            // FEAT-008: terminal receipt — conditioned on state='processing', so a stale claimant can
+            // never flip a receipt its successor already settled.
+            Effect.andThen(admission.settle({ handoffID: handoff.handoffID, state: "rejected", reason })),
+            Effect.andThen(settleDelivery(event, claim)),
+            Effect.as("rejected" as const),
+          )
 
-      const process = (event: DeepAgentEvent.Event) =>
+      const process = (event: DeepAgentEvent.Event, claim?: Claim) =>
         Effect.gen(function* () {
           const handoff = decodeHandoff(event)
           if (!handoff || event.source !== "system") {
-            yield* ack(event)
+            yield* settleDelivery(event, claim)
             return "ignored" as const
           }
+          // FEAT-008 durable admission receipt: stamped `processing` BEFORE any side-effecting
+          // decision, so a crash mid-handling leaves a durable "not finished" marker instead of
+          // "事件即状态". A terminal receipt returned here means this handoff already settled —
+          // short-circuit (ack only, never re-run accept/reject).
+          const receipt = yield* admission.begin({
+            handoffID: handoff.handoffID,
+            eventID: event.id,
+            workspaceID: event.workspaceID,
+            claimantID: claim?.claimantId ?? "agent-handoff-consumer:live",
+          })
+          if (receipt.state === "accepted") {
+            yield* settleDelivery(event, claim)
+            return "accepted" as const
+          }
+          if (receipt.state === "rejected") {
+            yield* settleDelivery(event, claim)
+            return "rejected" as const
+          }
           if (!flags.v4MultiAgentRuntime) {
-            return yield* reject(event, handoff, "handoff_flag_disabled")
+            return yield* reject(event, handoff, "handoff_flag_disabled", claim)
           }
 
           const original = yield* bus.getByID(handoff.eventID)
           if (!original || original.workspaceID !== event.workspaceID) {
-            return yield* reject(event, handoff, "handoff_original_event_missing")
+            return yield* reject(event, handoff, "handoff_original_event_missing", claim)
           }
           const subtask = TaskPartitioner.partition(original, { stableIDPrefix: original.id }).subtasks.find(
             (candidate) => candidate.id === handoff.taskID,
           )
-          if (!subtask) return yield* reject(event, handoff, "handoff_task_missing")
+          if (!subtask) return yield* reject(event, handoff, "handoff_task_missing", claim)
 
           const registry = yield* agents.listAgents({
             workspaceID: original.workspaceID,
@@ -94,7 +144,7 @@ export const layerWith = (options?: LayerOptions) =>
           const target = TaskPartitioner.capableAgents(subtask, registry).find(
             (candidate) => candidate.id === handoff.toAgentID,
           )
-          if (!target) return yield* reject(event, handoff, "handoff_target_not_capable")
+          if (!target) return yield* reject(event, handoff, "handoff_target_not_capable", claim)
 
           const trusted = yield* security.resolveTrustedSources(original.workspaceID)
           const actorAllowed = yield* security.actorHasWorkspacePermission({
@@ -114,7 +164,7 @@ export const layerWith = (options?: LayerOptions) =>
             requiredCapability: subtask.capability,
             runtimeAllowed,
           })
-          if (!gate.allowed) return yield* reject(event, handoff, `handoff_security_${gate.failedLayer}`)
+          if (!gate.allowed) return yield* reject(event, handoff, `handoff_security_${gate.failedLayer}`, claim)
 
           const accepted = yield* execution.acceptHandoff({
             workspaceID: event.workspaceID,
@@ -135,9 +185,10 @@ export const layerWith = (options?: LayerOptions) =>
               current?.handoffID === handoff.handoffID &&
               (current.status === "available" || current.status === "running" || current.status === "completed") &&
               (current.assignedAgentID === handoff.toAgentID || current.agentID === handoff.toAgentID)
-            if (!alreadyAccepted) return yield* reject(event, handoff, "handoff_state_mismatch")
+            if (!alreadyAccepted) return yield* reject(event, handoff, "handoff_state_mismatch", claim)
           }
-          yield* ack(event)
+          yield* admission.settle({ handoffID: handoff.handoffID, state: "accepted" })
+          yield* settleDelivery(event, claim)
           return "accepted" as const
         })
 
@@ -156,15 +207,42 @@ export const layerWith = (options?: LayerOptions) =>
 
       const pumpRetries: Interface["pumpRetries"] = (now) =>
         Effect.gen(function* () {
-          const due = yield* bus.dueRetries(now)
-          const owned = due.filter((delivery) => delivery.subscriptionGroup === HANDOFF_GROUP)
+          // RISK-001 / FEAT-008: claim due rows before executing so two processes (Desktop + CLI
+          // daemon, or an upgrade overlap) can never re-drive the same handoff retry concurrently.
+          // Success settles via the token-conditioned ackClaim (inside process); failure settles via
+          // the token-conditioned nackClaim below — a stale token is a no-op, so a claimant whose
+          // lease lapsed can never settle a delivery its successor already owns.
+          // `process` is shadowed by the local handler in this module — mint a unique claimant id.
+          const claimantId = `agent-handoff-consumer:${crypto.randomUUID()}`
+          const claim = yield* bus.claimDue({
+            subscriptionGroup: HANDOFF_GROUP,
+            claimantId,
+            now,
+          })
           yield* Effect.forEach(
-            owned,
+            claim.deliveries,
             (delivery) =>
-              bus.getByID(delivery.eventID).pipe(Effect.flatMap((event) => (event ? handle(event) : Effect.void))),
+              bus.getByID(delivery.eventID).pipe(
+                Effect.flatMap((event) =>
+                  event
+                    ? process(event, { claimantId, claimToken: claim.claimToken }).pipe(
+                        Effect.catchCause((cause) =>
+                          bus
+                            .nackClaim({
+                              subscriptionGroup: HANDOFF_GROUP,
+                              eventID: event.id,
+                              claimToken: claim.claimToken,
+                              reason: `handoff consumer failure: ${Cause.pretty(cause)}`,
+                            })
+                            .pipe(Effect.as("retrying" as const)),
+                        ),
+                      )
+                    : Effect.void,
+                ),
+              ),
             { discard: true },
           )
-          return owned.length
+          return claim.deliveries.length
         })
 
       if (runLoop) {
diff --git a/packages/deepagent-code/src/session/compaction-sql.ts b/packages/deepagent-code/src/session/compaction-sql.ts
index a98d5a24..2316a9d3 100644
--- a/packages/deepagent-code/src/session/compaction-sql.ts
+++ b/packages/deepagent-code/src/session/compaction-sql.ts
@@ -1,7 +1,12 @@
 // BUG-005: drizzle-orm type bindings for compaction_run and compaction_summary_attempt.
 import { index, integer, sqliteTable, text } from "drizzle-orm/sqlite-core"
+import { SessionTable } from "@deepagent-code/core/session/sql"
 
 export type CompactionRunState = "requested" | "summarizing" | "committed" | "failed" | "indeterminate"
+// UPD-005 Gap 2: how a run compacted. 'local_summary' is the default/historical
+// path (TEXT summary committed); 'remote_compact' commits an opaque server-held
+// encrypted context instead (summary_text stays NULL — information-hole exempt).
+export type CompactionMode = "local_summary" | "remote_compact"
 export type CompactionContinuationState =
   | "pending"
   | "admitted"
@@ -52,6 +57,28 @@ export const CompactionRunTable = sqliteTable("compaction_run", {
   continuation_dispatching_at: integer(),
   continuation_terminal_at: integer(),
   continuation_error_code: text(),
+  // UPD-005 Gap 2 (migration 20260820000000_remote_compact_persistence).
+  compaction_mode: text().$type<CompactionMode>().notNull().default("local_summary"),
+  // Remote mode only: points at session_compaction_encrypted_content.session_id.
+  encrypted_content_session: text(),
+})
+
+// UPD-005 Gap 1: the ONE currently-valid `/responses/compact` encrypted context per
+// session (1:1; the write path upserts so only the latest blob survives). The blob
+// is cross-run / session-scoped — replayed on the next compaction — hence its own
+// table instead of a compaction_run column. provider_id is the same-provenance
+// guard checked before replay; session deletion cascades.
+export const SessionCompactionEncryptedContentTable = sqliteTable("session_compaction_encrypted_content", {
+  session_id: text()
+    .primaryKey()
+    .notNull()
+    .references(() => SessionTable.id, { onDelete: "cascade" }),
+  encrypted_content: text().notNull(),
+  provider_id: text().notNull(),
+  model_id: text(),
+  source_run_id: text(),
+  created_at: integer().notNull(),
+  updated_at: integer().notNull(),
 })
 
 export const CompactionSummaryAttemptTable = sqliteTable("compaction_summary_attempt", {
diff --git a/packages/deepagent-code/src/session/compaction.ts b/packages/deepagent-code/src/session/compaction.ts
index 2f385dae..899d0f61 100644
--- a/packages/deepagent-code/src/session/compaction.ts
+++ b/packages/deepagent-code/src/session/compaction.ts
@@ -24,8 +24,11 @@ import {
   CompactionArtifactTable,
   CompactionRunTable,
   CompactionSummaryAttemptTable,
+  type CompactionMode,
   type SummaryAttemptState,
 } from "./compaction-sql"
+import { attemptRemoteCompaction, EncryptedContentStore, supportsRemoteCompaction } from "./remote-compact"
+import { RequestExecutor } from "@deepagent-code/llm/route"
 import { eq, and, inArray, isNull } from "drizzle-orm"
 
 import { Cause, Effect, Exit, Layer, Context, Option } from "effect"
@@ -40,7 +43,7 @@ import { SessionMessage } from "@deepagent-code/core/session/message"
 import { ProviderV2 } from "@deepagent-code/core/provider"
 import { ModelV2 } from "@deepagent-code/core/model"
 import { EventV2 } from "@deepagent-code/core/event"
-import { buildPrompt } from "@deepagent-code/core/session/compaction"
+import { buildPrompt, TOOL_OUTPUT_MAX_CHARS } from "@deepagent-code/core/session/compaction"
 import {
   updateLedgerFromSummaryRequired,
   carryOverToBridgeRequired,
@@ -68,11 +71,172 @@ export const Event = {
 
 export const PRUNE_MINIMUM = 20_000
 export const PRUNE_PROTECT = 40_000
-const TOOL_OUTPUT_MAX_CHARS = 2_000
+// UPD-005 (micro-compact, safe subset): the protect window used when the soft-landing fallback
+// phase triggers an early prune. Smaller than PRUNE_PROTECT so the fallback phase truncates MORE
+// of the older (white-list-excluded) tool results in place, buying headroom before the hard line.
+// Never wired into the hard phase — hard keeps PRUNE_PROTECT semantics unchanged.
+export const MICRO_COMPACT_PROTECT = 10_000
+// UPD-005: TOOL_OUTPUT_MAX_CHARS is defined once in core (packages/core/src/session/compaction.ts)
+// and imported above — do NOT re-introduce a local copy here.
 const PRUNE_PROTECTED_TOOLS = ["skill"]
 const DEFAULT_TAIL_TURNS = 2
 const MIN_PRESERVE_RECENT_TOKENS = 2_000
 const MAX_PRESERVE_RECENT_TOKENS = 8_000
+
+// =============================================================================
+// UPD-005 (structured compaction summary, claude-code parity, safe subset).
+// =============================================================================
+// DETERMINISM CONTRACT: the template constants and the pure helpers below
+// (stripSummaryAnalysis / selectPostCompactFileCandidates) are pure functions —
+// same input, same output. The durable summary-attempt requestHash covers the
+// rendered prompt, so the template MUST stay a module-level constant.
+//
+// Scope: the structured nine-section template replaces the legacy anchored
+// summary ONLY on the worldStateReinjection=false compatibility path. With
+// worldStateReinjection=true the V4.0.1 four-bucket NARROW template stays
+// byte-for-byte unchanged — its responsibility separation (files / env /
+// diagnostics are World State re-injected at their LATEST value, never
+// summarized) is an information-hole invariant (§3.4/§3.5).
+//
+// The model drafts inside an <analysis> scratchpad first; stripSummaryAnalysis
+// removes that scratchpad and unwraps the <summary> envelope BEFORE the text
+// reaches any durable or projected surface. The text-only / no-tools protocol
+// (toolChoice:"none" + SummaryProtocolViolation enforcement) is unchanged.
+export const STRUCTURED_SUMMARY_TEMPLATE = `Your task is to create a detailed, structured summary of the conversation history above, paying close attention to the user's explicit requests and your previous actions. This summary must capture enough technical detail — decisions, code patterns, file context, and error history — for the work to continue without losing context.
+
+Respond with TEXT ONLY. Do not call any tools. Your entire response must be an <analysis> block followed by a <summary> block.
+
+Before writing the final summary, wrap your drafting analysis in <analysis> tags to organize your thoughts and verify coverage. In the analysis:
+1. Walk the conversation chronologically and identify the user's explicit requests, your approach, key decisions, technical concepts, file names, code snippets, errors and their fixes, and any user feedback — especially feedback that changed your direction.
+2. Note every security-relevant instruction or constraint the user stated (sensitive files or data to avoid, forbidden operations, credential/secret handling rules). These MUST be preserved VERBATIM in the final summary so they keep applying after compaction.
+3. Double-check technical accuracy and completeness. The <analysis> block is discarded after compaction — only the <summary> block survives.
+
+Inside <summary>, output exactly these nine numbered sections in this order:
+
+1. Primary Request and Intent: all of the user's explicit requests and intents, in detail.
+2. Key Technical Concepts: important concepts, technologies, and frameworks discussed.
+3. Files and Code Sections: files examined, modified, or created — why each matters, what changed, and important code snippets verbatim.
+4. Errors and Fixes: every error encountered and how it was fixed, including corrective user feedback.
+5. Problem Solving: problems solved and ongoing troubleshooting.
+6. All User Messages: every genuine user message (user-role turns only, never tool results or quoted assistant text), with security-relevant instructions preserved verbatim.
+7. Pending Tasks: tasks explicitly requested but not yet complete.
+8. Current Work: precisely what was in progress immediately before this summary request, with file names and code snippets where applicable.
+9. Next Steps: the next action, only when directly in line with the user's most recent explicit request; include a verbatim quote showing where the work left off. Write "(none)" if the last task concluded.
+
+Rules:
+- Keep every section, using "(none)" when a section is empty.
+- Preserve exact file paths, commands, error strings, identifiers, and user-designated durable facts verbatim.
+- Never attribute assistant-generated text to the user.
+- Do not mention the summary process or that context was compacted.
+
+<example>
+<analysis>
+[Drafting scratchpad: chronological coverage check]
+</analysis>
+
+<summary>
+1. Primary Request and Intent:
+   [Detailed description]
+
+2. Key Technical Concepts:
+   - [Concept 1]
+
+3. Files and Code Sections:
+   - [File path]
+     - Why it matters / changes made
+     - [Important code snippet]
+
+4. Errors and Fixes:
+   - [Error and the fix applied]
+
+5. Problem Solving:
+   - [Solved problems and ongoing troubleshooting]
+
+6. All User Messages:
+   - [User message content]
+
+7. Pending Tasks:
+   - [Task]
+
+8. Current Work:
+   - [Precise description]
+
+9. Next Steps:
+   - [Next step or "(none)"]
+</summary>
+</example>`
+
+// Mirrors the core buildPrompt composition (packages/core/src/session/compaction.ts)
+// with the structured template swapped in. Keep the preamble wording in sync with
+// the core builder — the anchored-summary update contract depends on it.
+export const buildStructuredSummaryPrompt = (input: {
+  readonly previousSummary?: string
+  readonly context: readonly string[]
+}) =>
+  [
+    input.previousSummary
+      ? `Update the anchored summary below using the conversation history above.\nPreserve still-true details, remove stale details, and merge in the new facts.\n<previous-summary>\n${input.previousSummary}\n</previous-summary>`
+      : "Create a new anchored summary from the conversation history.",
+    STRUCTURED_SUMMARY_TEMPLATE,
+    ...input.context,
+  ].join("\n\n")
+
+// Post-processing: strip the <analysis> drafting scratchpad and unwrap the
+// <summary> envelope. Pure and conservative — text without any <analysis> /
+// <summary> marker is returned byte-for-byte unchanged (legacy summaries and
+// NARROW outputs are untouched).
+export const stripSummaryAnalysis = (text: string): string => {
+  if (!/<\/?(?:analysis|summary)>/.test(text)) return text
+  let out = text.replace(/<analysis>[\s\S]*?<\/analysis>/g, "")
+  out = out.replace(/<summary>([\s\S]*?)<\/summary>/g, (_match, content: string) => `Summary:\n${content.trim()}`)
+  out = out.replace(/\n{3,}/g, "\n\n")
+  return out.trim()
+}
+
+// UPD-005 (post-compact re-injection hook, conservative version): claude-code
+// re-injects the most recently read files after compaction
+// (POST_COMPACT_MAX_FILES_TO_RESTORE = 5). The committed-history chain here has
+// NO injection point yet, so this module only SELECTS candidates — a pure
+// function of the compacted messages (same input ⇒ same output) — recorded for
+// future wiring. Never adds an injection path.
+export const POST_COMPACT_MAX_FILES_TO_RESTORE = 5
+export const POST_COMPACT_MAX_CHARS_PER_FILE = 20_000
+const POST_COMPACT_READ_TOOLS = new Set(["read"])
+
+export type PostCompactFileCandidate = {
+  readonly filePath: string
+  readonly tool: string
+  readonly messageID: MessageID
+}
+
+// Scans backwards (most recent read wins), deduplicates by path, caps at
+// POST_COMPACT_MAX_FILES_TO_RESTORE. Only completed reads count; a pending /
+// errored read does not prove the file content ever entered context.
+export const selectPostCompactFileCandidates = (
+  messages: readonly SessionV1.WithParts[],
+): readonly PostCompactFileCandidate[] => {
+  const seen = new Set<string>()
+  const candidates: PostCompactFileCandidate[] = []
+  for (let index = messages.length - 1; index >= 0 && candidates.length < POST_COMPACT_MAX_FILES_TO_RESTORE; index--) {
+    const message = messages[index]
+    for (let partIndex = message.parts.length - 1; partIndex >= 0; partIndex--) {
+      if (candidates.length >= POST_COMPACT_MAX_FILES_TO_RESTORE) break
+      const part = message.parts[partIndex]
+      if (part.type !== "tool" || part.state.status !== "completed") continue
+      if (!POST_COMPACT_READ_TOOLS.has(part.tool)) continue
+      const input: unknown = part.state.input
+      let filePath: string | undefined
+      if (typeof input === "object" && input !== null) {
+        const value = (input as Record<string, unknown>).filePath
+        if (typeof value === "string" && value.length > 0) filePath = value
+      }
+      if (!filePath || seen.has(filePath)) continue
+      seen.add(filePath)
+      candidates.push({ filePath, tool: part.tool, messageID: message.info.id })
+    }
+  }
+  return candidates
+}
 type Turn = {
   start: number
   end: number
@@ -148,7 +312,7 @@ export interface Interface {
     tokens: SessionV1.Assistant["tokens"]
     model: Provider.Model
   }) => Effect.Effect<boolean>
-  readonly prune: (input: { sessionID: SessionID }) => Effect.Effect<void>
+  readonly prune: (input: { sessionID: SessionID; protect?: number }) => Effect.Effect<void>
   readonly process: (input: {
     parentID: MessageID
     messages: SessionV1.WithParts[]
@@ -165,6 +329,11 @@ export interface Interface {
     activityID?: string
   }) => Effect.Effect<void>
   readonly recover: (sessionID: SessionID) => Effect.Effect<void>
+  // BUG-407-009 §10.1 fail-closed contract: when a committed compaction continuation cannot be
+  // recovered (the recovery capability itself is a Maintenance-milestone deliverable), the run must
+  // stop advertising itself as recoverable — otherwise instance initialization re-wakes it forever
+  // and floods the log. CAS pending/admitted/dispatching → failed; real recovery can revisit later.
+  readonly failContinuationClosed: (input: { runID: string }) => Effect.Effect<void>
   readonly recoverableContinuations: (projectID: Project.ID) => Effect.Effect<
     readonly {
       runID: string
@@ -231,6 +400,18 @@ export const validateReplacementTargetInTransaction = Effect.fn(
 
 export class Service extends Context.Service<Service, Interface>()("@deepagent-code/SessionCompaction") {}
 
+// UPD-005 Gap 2 (§4.2, information-hole exemption): a committed run that compacted
+// remotely carries no TEXT summary by design — "no information is lost" is guaranteed
+// by the provider's server-held encrypted context, not by text. Any check that treats
+// a missing summary_text as an information hole MUST exempt runs in this shape.
+export const remoteCompactionInformationHoleExempt = (run: {
+  readonly compaction_mode: CompactionMode | null
+  readonly encrypted_content_session: string | null
+}): boolean =>
+  run.compaction_mode === "remote_compact" &&
+  run.encrypted_content_session !== null &&
+  run.encrypted_content_session.length > 0
+
 export const use = serviceUse(Service)
 
 export const layer = Layer.effect(
@@ -245,6 +426,13 @@ export const layer = Layer.effect(
     const events = yield* EventV2Bridge.Service
     const flags = yield* RuntimeFlags.Service
     const { db } = yield* Database.Service
+    // UPD-005 Gap 2: the remote branch dispatches through the route executor.
+    const executor = yield* RequestExecutor.Service
+    // UPD-005 Gap 1: bind the encrypted_content store to this database so the
+    // opaque blob survives restarts (see remote-compact.ts). Revert to memory-only
+    // mode when this layer goes away so no closed handle stays reachable.
+    EncryptedContentStore.bind(db)
+    yield* Effect.addFinalizer(() => Effect.sync(() => EncryptedContentStore.bind(undefined)))
     const promptEpoch = yield* PromptEpoch.Service
     const activeCompactions = new Set<SessionID>()
 
@@ -981,6 +1169,60 @@ export const layer = Layer.effect(
         .pipe(Effect.orDie)
     })
 
+    // UPD-005 Gap 2 (§4.2): commit for the remote mode. There is no TEXT summary
+    // and no marker text part to commit — the run records the mode, the pointer to
+    // the durably stored encrypted_content, and transitions to 'committed'.
+    // summary_text stays NULL by design (information-hole exempt, see
+    // remoteCompactionInformationHoleExempt).
+    const commitRemoteRun = Effect.fn("SessionCompaction.commitRemoteRun")(function* (input: {
+      runID: string
+      sessionID: SessionID
+      reason: "auto" | "manual"
+    }) {
+      return yield* db
+        .transaction(
+          (tx) =>
+            Effect.gen(function* () {
+              // The authority trigger only admits requested → summarizing →
+              // committed, so advance the run through the same sequence the local
+              // path uses.
+              yield* tx
+                .update(CompactionRunTable)
+                .set({ state: "summarizing" })
+                .where(and(eq(CompactionRunTable.run_id, input.runID), eq(CompactionRunTable.state, "requested")))
+                .run()
+              const committed = yield* tx
+                .update(CompactionRunTable)
+                .set({
+                  state: "committed",
+                  compaction_mode: "remote_compact",
+                  encrypted_content_session: input.sessionID,
+                  completion_reason: input.reason,
+                  committed_at: Date.now(),
+                })
+                .where(and(eq(CompactionRunTable.run_id, input.runID), eq(CompactionRunTable.state, "summarizing")))
+                .returning({ run_id: CompactionRunTable.run_id })
+                .get()
+              if (!committed) return false
+              // A remote run has nothing publishable: orphan any pending run
+              // bookkeeping artifacts (mirrors failRun) so recovery never replays them.
+              yield* tx
+                .update(CompactionArtifactTable)
+                .set({ state: "orphaned" })
+                .where(
+                  and(
+                    eq(CompactionArtifactTable.run_id, input.runID),
+                    eq(CompactionArtifactTable.state, "pending"),
+                  ),
+                )
+                .run()
+              return true
+            }),
+          { behavior: "immediate" },
+        )
+        .pipe(Effect.orDie)
+    })
+
     const isOverflow = Effect.fn("SessionCompaction.isOverflow")(function* (input: {
       tokens: SessionV1.Assistant["tokens"]
       model: Provider.Model
@@ -1043,12 +1285,24 @@ export const layer = Layer.effect(
       }
     })
 
-    // goes backwards through parts until there are PRUNE_PROTECT tokens worth of tool
-    // calls, then erases output of older tool calls to free context space
-    const prune = Effect.fn("SessionCompaction.prune")(function* (input: { sessionID: SessionID }) {
+    // goes backwards through parts until there are `protect` tokens worth of tool
+    // calls, then erases output of older tool calls to free context space.
+    // UPD-005: `protect` is parameterized (default PRUNE_PROTECT = pre-existing behavior) so the
+    // soft-landing fallback phase can run a micro-compact with a smaller window. DETERMINISM
+    // CONTRACT: the truncated set is a pure function of (messages, protect, PRUNE_MINIMUM) — the
+    // scan is strictly backwards, Token.estimate is pure, and only `Date.now()` (the persisted
+    // time.compacted stamp) varies between runs without ever changing WHICH parts get truncated.
+    // The durable summary-attempt requestHash is computed over the compacted projection, so any
+    // non-determinism here would desync compaction replays. Idempotency: parts already stamped
+    // with time.compacted break the scan, so a repeated prune never double-truncates.
+    const prune = Effect.fn("SessionCompaction.prune")(function* (input: {
+      sessionID: SessionID
+      protect?: number
+    }) {
       const cfg = yield* config.get()
       if (!cfg.compaction?.prune) return
-      log.info("pruning")
+      const protect = input.protect ?? PRUNE_PROTECT
+      log.info("pruning", { protect })
 
       const msgs = yield* session
         .messages({ sessionID: input.sessionID })
@@ -1073,7 +1327,7 @@ export const layer = Layer.effect(
           if (part.state.time.compacted) break loop
           const estimate = Token.estimate(part.state.output)
           total += estimate
-          if (total <= PRUNE_PROTECT) continue
+          if (total <= protect) continue
           pruned += estimate
           toPrune.push(part)
         }
@@ -1150,6 +1404,59 @@ export const layer = Layer.effect(
         sourceProjectionVersion: projection.projectionVersion,
       })
       if (!run) return "stop"
+
+      const agent = yield* agents.get("compaction")
+      const model = agent.model
+        ? yield* provider.getModel(agent.model.providerID, agent.model.modelID).pipe(Effect.orDie)
+        : yield* provider.getModel(userMessage.model.providerID, userMessage.model.modelID).pipe(Effect.orDie)
+
+      // UPD-005 Gap 2 (§4.2/§5): server-side compaction branch — remote only. The
+      // capability probe runs BEFORE any marker part is written: a remote commit
+      // produces no TEXT summary and no marker text part. {used:"local"} falls
+      // through to the local summary path below, which stays byte-for-byte unchanged.
+      if (!supportsRemoteCompaction(model)) {
+        // §4.3: capability lost (e.g. model switch) — the stale blob must never be replayed.
+        EncryptedContentStore.clear(input.sessionID)
+      }
+      if (supportsRemoteCompaction(model)) {
+        const providerInfo = yield* provider.getProvider(model.providerID).pipe(Effect.orDie)
+        const remoteMessages = yield* MessageV2.toModelMessagesEffect([...input.messages], model, {
+          stripMedia: true,
+          toolOutputMaxChars: TOOL_OUTPUT_MAX_CHARS,
+        })
+        const outcome = yield* attemptRemoteCompaction({
+          sessionID: input.sessionID,
+          model,
+          provider: providerInfo,
+          auth: undefined,
+          messages: remoteMessages,
+        }).pipe(Effect.provideService(RequestExecutor.Service, executor))
+        if (outcome.used === "remote") {
+          EncryptedContentStore.set(input.sessionID, outcome.encryptedContent, {
+            providerID: model.providerID,
+            modelID: model.id,
+            sourceRunID: run.run_id,
+          })
+          const committed = yield* commitRemoteRun({
+            runID: run.run_id,
+            sessionID: input.sessionID,
+            reason: input.auto ? "auto" : "manual",
+          })
+          if (!committed) {
+            yield* failRun(run.run_id, "compaction_commit_conflict")
+            return "stop"
+          }
+          log.info("remote compaction committed", { runID: run.run_id, sessionID: input.sessionID })
+          return "stop"
+        }
+        // {used:"local"}: record why the server-side path was unavailable (§4.2),
+        // then the existing local summary path below takes over.
+        log.info("remote compaction unavailable, using local summary", {
+          runID: run.run_id,
+          reason: outcome.reason,
+        })
+      }
+
       if (existingCompactionPart) {
         yield* registerArtifact({
           runID: run.run_id,
@@ -1182,10 +1489,6 @@ export const layer = Layer.effect(
       // messages, which are indistinguishable from a real repeated prompt in the UI and history.
       const messages = input.messages
 
-      const agent = yield* agents.get("compaction")
-      const model = agent.model
-        ? yield* provider.getModel(agent.model.providerID, agent.model.modelID).pipe(Effect.orDie)
-        : yield* provider.getModel(userMessage.model.providerID, userMessage.model.modelID).pipe(Effect.orDie)
       const cfg = yield* config.get()
       const history = compactionPart && messages.at(-1)?.info.id === input.parentID ? messages.slice(0, -1) : messages
       const prior = completedCompactions(history)
@@ -1204,10 +1507,14 @@ export const layer = Layer.effect(
       )
       // V4.0.1 P1 (§3.4/§3.5): narrow the summary to four buckets ONLY when worldStateReinjection is on —
       // it MUST be the same flag that gates re-injection, else "summary drops files, nothing re-injects"
-      // opens an information hole. Flag OFF ⇒ legacy SUMMARY_TEMPLATE, byte-for-byte pre-V4.0.1.
+      // opens an information hole. Flag OFF ⇒ UPD-005 structured nine-section template (the pre-UPD-005
+      // legacy SUMMARY_TEMPLATE lived in core buildPrompt; the structured template supersedes it on this
+      // compatibility path only). Flag ON ⇒ NARROW template, byte-for-byte unchanged.
       const nextPrompt =
         compacting.prompt ??
-        buildPrompt({ previousSummary, context: compacting.context, narrow: flags.worldStateReinjection })
+        (flags.worldStateReinjection
+          ? buildPrompt({ previousSummary, context: compacting.context, narrow: true })
+          : buildStructuredSummaryPrompt({ previousSummary, context: compacting.context }))
       const msgs = structuredClone(selected.head)
       yield* plugin.trigger("experimental.chat.messages.transform", {}, { messages: msgs })
       const modelMessages = yield* MessageV2.toModelMessagesEffect(msgs, model, {
@@ -1441,15 +1748,40 @@ export const layer = Layer.effect(
       if (result.action === "continue") {
         const persisted = yield* session.messages({ sessionID: input.sessionID }).pipe(Effect.orDie)
         const checkpointIndex = persisted.findIndex((item) => item.info.id === currentProcessor.message.id)
-        const checkpoint = persisted[checkpointIndex] ?? {
+        let checkpoint = persisted[checkpointIndex] ?? {
           info: msg,
           parts: [],
         }
-        const summary = summaryText(checkpoint)
+        // UPD-005: strip the <analysis> drafting scratchpad before the summary enters ANY durable or
+        // projected surface. The persisted text parts are rewritten FIRST so HistoryAuthority hashes,
+        // the commit validation (which re-hydrates from the DB), and the post-compaction projection all
+        // see the stripped text. stripSummaryAnalysis is a pure function and returns tag-free input
+        // byte-for-byte unchanged, so pre-UPD-005 summaries are unaffected.
+        const rawSummary = summaryText(checkpoint)
+        const summary = rawSummary ? stripSummaryAnalysis(rawSummary) : undefined
         if (!summary) {
+          // Information-hole gate: a local_summary run MUST commit text. Remote runs
+          // never reach this checkpoint (they commit earlier via commitRemoteRun) and
+          // are exempt per remoteCompactionInformationHoleExempt — their NULL
+          // summary_text is legal because the server-held encrypted context, not
+          // text, guarantees no information is lost (§4.2).
           yield* failRun(run.run_id, "summary_text_missing")
           return "stop"
         }
+        if (summary !== rawSummary) {
+          const textParts = checkpoint.parts.filter((part): part is SessionV1.TextPart => part.type === "text")
+          const strippedParts = checkpoint.parts.map((part) => {
+            if (part.type !== "text") return part
+            return part.id === textParts[0]?.id ? { ...part, text: summary } : { ...part, text: "" }
+          })
+          for (const part of strippedParts) {
+            if (part.type !== "text") continue
+            const original = checkpoint.parts.find((item): item is SessionV1.TextPart => item.id === part.id)
+            if (original && original.text === part.text) continue
+            yield* session.updatePart(part)
+          }
+          checkpoint = { info: checkpoint.info, parts: strippedParts }
+        }
         if (summary) {
           const contextModel = yield* provider
             .getModel(userMessage.model.providerID, userMessage.model.modelID)
@@ -1533,6 +1865,19 @@ export const layer = Layer.effect(
             yield* failRun(run.run_id, "compaction_commit_conflict")
             return "stop"
           }
+          // UPD-005 (post-compact re-injection hook, conservative version): record the candidate list of
+          // recently-read files from the compacted head ONLY. There is no injection point in the committed
+          // chain yet, so nothing is re-injected here. Persisting the list on compaction_run would require
+          // a core-owned schema migration (out of scope) — recorded as a report item for future wiring.
+          const postCompactCandidates = selectPostCompactFileCandidates(selected.head)
+          if (postCompactCandidates.length > 0)
+            log.info("post-compact file candidates", {
+              runID: run.run_id,
+              count: postCompactCandidates.length,
+              maxFiles: POST_COMPACT_MAX_FILES_TO_RESTORE,
+              maxCharsPerFile: POST_COMPACT_MAX_CHARS_PER_FILE,
+              files: postCompactCandidates.map((candidate) => candidate.filePath),
+            })
           yield* publishCommittedRun(run.run_id)
         }
       }
@@ -1680,12 +2025,29 @@ export const layer = Layer.effect(
       }))
     })
 
+    const failContinuationClosed = Effect.fn("SessionCompaction.failContinuationClosed")(function* (input: {
+      runID: string
+    }) {
+      yield* db
+        .update(CompactionRunTable)
+        .set({ continuation_state: "failed" })
+        .where(
+          and(
+            eq(CompactionRunTable.run_id, input.runID),
+            inArray(CompactionRunTable.continuation_state, ["pending", "admitted", "dispatching"] as const),
+          ),
+        )
+        .run()
+        .pipe(Effect.orDie)
+    })
+
     return Service.of({
       isOverflow,
       prune,
       process: processCompaction,
       create,
       recover,
+      failContinuationClosed,
       recoverableContinuations,
       hasPending,
     })
@@ -1704,6 +2066,7 @@ export const defaultLayer = Layer.suspend(() =>
     Layer.provide(EventV2Bridge.defaultLayer),
     Layer.provide(Database.defaultLayer),
     Layer.provide(PromptEpoch.defaultLayer),
+    Layer.provide(RequestExecutor.defaultLayer),
   ),
 )
 
diff --git a/packages/deepagent-code/src/session/diff-artifact.ts b/packages/deepagent-code/src/session/diff-artifact.ts
index d4c8983b..0d03e58f 100644
--- a/packages/deepagent-code/src/session/diff-artifact.ts
+++ b/packages/deepagent-code/src/session/diff-artifact.ts
@@ -1,5 +1,6 @@
 import { Database } from "@deepagent-code/core/database/database"
-import { EventArtifactChunkTable, EventArtifactTable } from "@deepagent-code/core/event/sql"
+import { EventV2 } from "@deepagent-code/core/event"
+import { EventArtifactChunkTable, EventArtifactTable, EventTable } from "@deepagent-code/core/event/sql"
 import { MessageTable, SessionPromptEpochMessageTable, SessionTable } from "@deepagent-code/core/session/sql"
 import { CanonicalJson } from "@deepagent-code/core/util/canonical-json"
 import { Hash } from "@deepagent-code/core/util/hash"
@@ -543,6 +544,289 @@ function migrateBoundedCandidate(db: Database.Interface["db"], candidate: Candid
     )
 }
 
+/**
+ * RISK-003 ① runtime writer. Persists the inline `summary.diffs` of a just-published user message
+ * into the session_diff_artifact authority and rewrites the message row to the compact
+ * `diffArtifact` descriptor, so runtime writes converge on the same durable shape the backfill
+ * (`migrate`) produces for legacy rows. Runs AFTER the message.updated event is committed (the
+ * event row supplies `source_event_id` + `original_data_hash`) and is best-effort: any validation
+ * or CAS failure leaves the bounded inline diffs in place and surfaces as a typed `Invalid` the
+ * caller logs. Never deletes events, never rewrites history hashes (user summary is excluded from
+ * HistoryAuthority, proven per call via `validateEpochHashes`).
+ */
+export const capture = Effect.fn("SessionDiffArtifact.capture")(function* (input: {
+  sessionID: SessionID
+  messageID: MessageID
+  sourceEventID: EventV2.ID
+  now?: number
+}) {
+  const { db } = yield* Database.Service
+  const now = input.now ?? Date.now()
+  const source = yield* db
+    .select({ text: sql<string>`CAST(${EventTable.data} AS TEXT)`, seq: EventTable.seq })
+    .from(EventTable)
+    .where(and(eq(EventTable.id, input.sourceEventID), eq(EventTable.aggregate_id, input.sessionID)))
+    .get()
+    .pipe(Effect.orDie)
+  if (!source) return yield* Effect.fail(new Invalid({ message: "runtime capture source event is missing" }))
+  const current = yield* db
+    .get<{ data: string }>(sql`
+      SELECT CAST(data AS TEXT) AS data
+      FROM message
+      WHERE id = ${input.messageID}
+        AND session_id = ${input.sessionID}
+        AND json_extract(data, '$.role') = 'user'
+    `)
+    .pipe(Effect.orDie)
+  if (!current) return yield* Effect.fail(new Invalid({ message: "runtime capture message is missing" }))
+  const decoded = Schema.decodeUnknownOption(Schema.UnknownFromJsonString)(current.data)
+  const parsed = decoded._tag === "Some" ? decoded.value : undefined
+  if (!record(parsed) || parsed.role !== "user")
+    return yield* Effect.fail(new Invalid({ message: "runtime capture message shape is invalid" }))
+  const summary = record(parsed.summary) ? parsed.summary : undefined
+  if (!summary) return yield* Effect.fail(new Invalid({ message: "runtime capture message shape is invalid" }))
+  if (summary.diffArtifact) return { state: "skipped" as const }
+  const diffs = summary.diffs
+  if (!Array.isArray(diffs) || diffs.length === 0) return { state: "skipped" as const }
+  if (diffs.length > MAX_MIGRATION_FILES)
+    return yield* Effect.fail(new Invalid({ message: `runtime diff count exceeds ${MAX_MIGRATION_FILES}` }))
+  const files = [] as Array<{
+    index: number
+    path: string
+    pathKey: string
+    additions: number
+    deletions: number
+    status: "added" | "deleted" | "modified" | null
+    patch: Buffer
+  }>
+  const pathKeys = new Set<string>()
+  for (const [index, entry] of diffs.entries()) {
+    if (!record(entry)) return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} is invalid` }))
+    const path = normalizePath(entry.file)
+    if (!path)
+      return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} file path is invalid` }))
+    const pathKey = path.toLocaleLowerCase("en-US")
+    if (pathKeys.has(pathKey))
+      return yield* Effect.fail(new Invalid({ message: "runtime diffs contain a case-colliding file path" }))
+    pathKeys.add(pathKey)
+    const additions = entry.additions
+    const deletions = entry.deletions
+    if (typeof additions !== "number" || !Number.isSafeInteger(additions) || additions < 0)
+      return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} additions are invalid` }))
+    if (typeof deletions !== "number" || !Number.isSafeInteger(deletions) || deletions < 0)
+      return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} deletions are invalid` }))
+    const status = entry.status
+    if (status !== undefined && status !== "added" && status !== "deleted" && status !== "modified")
+      return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} status is invalid` }))
+    const patch = entry.patch
+    if (patch !== undefined && patch !== null && typeof patch !== "string")
+      return yield* Effect.fail(new Invalid({ message: `runtime diff ${index} patch is invalid` }))
+    files.push({
+      index,
+      path,
+      pathKey,
+      additions,
+      deletions,
+      status: status ?? null,
+      patch: Buffer.from(typeof patch === "string" ? patch : "", "utf8"),
+    })
+  }
+  const body = Buffer.from(JSON.stringify({ diffs }))
+  if (body.byteLength > MAX_MIGRATION_BODY_BYTES)
+    return yield* Effect.fail(new Invalid({ message: "runtime diff body exceeds the byte budget" }))
+  const bodyHash = Hash.sha256(body)
+  const originalDataHash = Hash.sha256(source.text)
+  const artifactID = `evtart_${Hash.sha256(`legacy-message-diff.v2:${input.sourceEventID}:${originalDataHash}:${bodyHash}`)}`
+  const descriptor: CanonicalArtifact = {
+    id: artifactID,
+    hash: bodyHash,
+    codec: "legacy-message-diff.v2",
+    fileCount: diffs.length,
+    previewFileCount: Math.min(diffs.length, MessageV2.ClientDiffLimits.files),
+    previewTruncated: diffs.length > MessageV2.ClientDiffLimits.files,
+  }
+  const nextSummary: Record<string, unknown> = { ...summary, diffArtifact: descriptor }
+  delete nextSummary.diffs
+  const next = { ...parsed, summary: nextSummary }
+  const nextData = CanonicalJson.stringify(next)
+  const canonicalData = {
+    sessionID: input.sessionID,
+    info: { ...next, id: input.messageID, sessionID: input.sessionID },
+  }
+  const canonicalText = JSON.stringify(canonicalData)
+  const bodyChunks = Array.from(
+    { length: Math.max(1, Math.ceil(body.byteLength / FILE_CHUNK_BYTES)) },
+    (_, index) => body.subarray(index * FILE_CHUNK_BYTES, (index + 1) * FILE_CHUNK_BYTES),
+  )
+  return yield* db
+    .transaction(
+      (tx) =>
+        Effect.gen(function* () {
+          const existing = yield* tx
+            .select()
+            .from(SessionDiffMigrationReceiptTable)
+            .where(eq(SessionDiffMigrationReceiptTable.message_id, input.messageID))
+            .get()
+          if (existing) return { state: "skipped" as const }
+          const epochs = yield* validateEpochHashes(
+            tx as unknown as Database.Interface["db"],
+            input.sessionID,
+            input.messageID,
+            parsed,
+            next,
+          )
+          if ("failure" in epochs)
+            return yield* Effect.fail(new Invalid({ message: epochs.failure ?? "history authority validation failed" }))
+          const sessionSummary = yield* tx.get<{ data: string | null; body: string | null }>(sql`
+            SELECT CAST(summary_diffs AS TEXT) AS data,
+              CASE WHEN summary_diffs IS NULL THEN NULL ELSE json_object('diffs', json(summary_diffs)) END AS body
+            FROM session
+            WHERE id = ${input.sessionID}
+          `)
+          if (!sessionSummary) return yield* Effect.fail(new Invalid({ message: "runtime capture Session is missing" }))
+          const expectedMessageDataHash = Hash.sha256(current.data)
+          const expectedSessionSummaryHash = Hash.sha256(sessionSummary.data ?? "null")
+          yield* tx
+            .run(sql`
+              INSERT INTO event_artifact (
+                artifact_id, event_id, aggregate_id, seq, kind,
+                original_data_hash, canonical_data_hash, canonical_data,
+                body_hash, body_bytes, chunk_count, codec_version, created_at
+              ) VALUES (
+                ${artifactID}, ${input.sourceEventID}, ${input.sessionID}, ${source.seq}, 'legacy_message_diff',
+                ${originalDataHash}, ${Hash.sha256(canonicalText)}, ${canonicalText},
+                ${bodyHash}, ${body.byteLength}, ${bodyChunks.length}, 2, ${now}
+              ) ON CONFLICT DO NOTHING
+            `)
+            .pipe(Effect.orDie)
+          yield* Effect.forEach(
+            bodyChunks,
+            (chunk, index) =>
+              tx
+                .run(sql`
+                  INSERT INTO event_artifact_chunk (artifact_id, chunk_index, data, chunk_hash)
+                  VALUES (${artifactID}, ${index}, ${chunk}, ${Hash.sha256(chunk)})
+                  ON CONFLICT DO NOTHING
+                `)
+                .pipe(Effect.orDie),
+            { discard: true },
+          )
+          // The receipt FK targets event_artifact, so the artifact rows must exist first; the
+          // receipt_guard trigger then requires the prepared receipt before any file rows land.
+          yield* tx
+            .insert(SessionDiffMigrationReceiptTable)
+            .values({
+              message_id: input.messageID,
+              session_id: input.sessionID,
+              artifact_id: artifactID,
+              source_event_id: input.sourceEventID,
+              expected_message_data_hash: expectedMessageDataHash,
+              expected_session_summary_hash: expectedSessionSummaryHash,
+              canonicalizer_version: 2,
+              canonicalization_version: HistoryAuthority.CANONICALIZATION_VERSION,
+              epoch_hashes: epochs.values,
+              state: "prepared",
+              created_at: now,
+              updated_at: now,
+            })
+            .run()
+          for (const file of files) {
+            const chunkCount = Math.max(1, Math.ceil(file.patch.byteLength / FILE_CHUNK_BYTES))
+            yield* tx
+              .insert(SessionDiffArtifactFileTable)
+              .values({
+                artifact_id: artifactID,
+                file_index: file.index,
+                path: file.path,
+                path_key: file.pathKey,
+                additions: file.additions,
+                deletions: file.deletions,
+                status: file.status,
+                patch_hash: Hash.sha256(file.patch),
+                patch_bytes: file.patch.byteLength,
+                patch_chunk_count: chunkCount,
+              })
+              .run()
+            yield* Effect.forEach(
+              Array.from(
+                { length: chunkCount },
+                (_, index) => file.patch.subarray(index * FILE_CHUNK_BYTES, (index + 1) * FILE_CHUNK_BYTES),
+              ),
+              (data, index) =>
+                tx
+                  .insert(SessionDiffArtifactFileChunkTable)
+                  .values({
+                    artifact_id: artifactID,
+                    file_index: file.index,
+                    chunk_index: index,
+                    data,
+                    chunk_hash: Hash.sha256(data),
+                  })
+                  .run(),
+              { discard: true },
+            )
+          }
+          const updated = yield* tx
+            .update(MessageTable)
+            .set({
+              data: sql`json(${nextData})` as unknown as typeof MessageTable.$inferInsert.data,
+              time_updated: now,
+            })
+            .where(
+              and(
+                eq(MessageTable.id, input.messageID),
+                eq(MessageTable.session_id, input.sessionID),
+                sql`CAST(${MessageTable.data} AS TEXT) = ${current.data}`,
+              ),
+            )
+            .returning({ data: sql<string>`CAST(${MessageTable.data} AS TEXT)` })
+            .get()
+          if (!updated)
+            return yield* Effect.fail(new Invalid({ message: "runtime capture message compare-and-swap lost" }))
+          if (Hash.sha256(updated.data) !== Hash.sha256(nextData))
+            return yield* Effect.die(new Error(`Runtime diff message bytes diverged: ${input.messageID}`))
+          let summaryNulled = false
+          if (sessionSummary.data !== null && sessionSummary.body !== null && Hash.sha256(sessionSummary.body) === bodyHash) {
+            const sessionUpdated = yield* tx
+              .update(SessionTable)
+              .set({ summary_diffs: null })
+              .where(
+                and(
+                  eq(SessionTable.id, input.sessionID),
+                  sql`CAST(${SessionTable.summary_diffs} AS TEXT) = ${sessionSummary.data}`,
+                ),
+              )
+              .returning({ id: SessionTable.id })
+              .get()
+            if (!sessionUpdated)
+              return yield* Effect.fail(new Invalid({ message: "runtime capture Session summary compare-and-swap lost" }))
+            summaryNulled = true
+          }
+          yield* tx
+            .update(SessionDiffMigrationReceiptTable)
+            .set({
+              state: "committed",
+              committed_message_data_hash: Hash.sha256(updated.data),
+              committed_session_summary_hash: summaryNulled ? NULL_SUMMARY_HASH : expectedSessionSummaryHash,
+              updated_at: now,
+              committed_at: now,
+            })
+            .where(
+              and(
+                eq(SessionDiffMigrationReceiptTable.message_id, input.messageID),
+                eq(SessionDiffMigrationReceiptTable.state, "prepared"),
+              ),
+            )
+            .run()
+          return { state: "captured" as const, artifact: descriptor }
+        }),
+      // Same WAL/deferred rationale as migrate: validation reads stay on one snapshot without
+      // reserving the writer; concurrent commits surface as CAS misses instead of stale authority.
+      { behavior: "deferred" },
+    )
+    .pipe(Effect.orDie)
+})
+
 function migrationBudget(db: Database.Interface["db"], candidate: Candidate) {
   return db
     .get<{
diff --git a/packages/deepagent-code/src/session/durable-executor-lock.ts b/packages/deepagent-code/src/session/durable-executor-lock.ts
index 88afa39b..189c1997 100644
--- a/packages/deepagent-code/src/session/durable-executor-lock.ts
+++ b/packages/deepagent-code/src/session/durable-executor-lock.ts
@@ -60,7 +60,10 @@ export function acquireDurableExecutorLease(input: {
         fs.mkdirSync(lockPath, { mode: 0o700 })
       } catch (error) {
         if (!hasCode(error, "EEXIST")) return
-        if (!leaseIsStale(lockPath, staleMs)) return
+        if (!leaseIsStale(lockPath, staleMs)) {
+          warnLiveStaleLeaseHolder({ directory: input.directory, lockPath, staleMs })
+          return
+        }
         if (!quarantineStaleLease(lockPath)) continue
         fs.mkdirSync(lockPath, { mode: 0o700 })
       }
@@ -126,6 +129,36 @@ export function releaseDurableExecutorLease(lease: DurableExecutorLease) {
   }
 }
 
+/**
+ * Alert when a lease is past its staleness window but its owner process is still alive, so the
+ * fail-closed refusal in leaseIsStale is observable instead of a silent startup stall.
+ */
+function warnLiveStaleLeaseHolder(input: { readonly directory: string; readonly lockPath: string; readonly staleMs: number }) {
+  const metadata = readMetadata(path.join(input.lockPath, "meta.json"))
+  if (!metadata || !processIsAlive(metadata.pid)) return
+  let leaseAgeMs: number | undefined
+  try {
+    leaseAgeMs = Date.now() - fs.statSync(path.join(input.lockPath, "heartbeat")).mtimeMs
+  } catch (error) {
+    if (!hasCode(error, "ENOENT")) return
+  }
+  if (leaseAgeMs === undefined) {
+    try {
+      leaseAgeMs = Date.now() - fs.statSync(input.lockPath).mtimeMs
+    } catch {
+      return
+    }
+  }
+  if (leaseAgeMs <= input.staleMs) return
+  console.warn("[durable-executor-lock] stale lease held by a live process; refusing takeover (fail-closed)", {
+    workspace: input.directory,
+    pid: metadata.pid,
+    leaseAgeMs,
+    staleMs: input.staleMs,
+    lockPath: input.lockPath,
+  })
+}
+
 function quarantineStaleLease(lockPath: string) {
   const quarantine = `${lockPath}.stale-${randomUUID()}`
   try {
diff --git a/packages/deepagent-code/src/session/event-dispatcher.ts b/packages/deepagent-code/src/session/event-dispatcher.ts
index be9f196d..407d83ba 100644
--- a/packages/deepagent-code/src/session/event-dispatcher.ts
+++ b/packages/deepagent-code/src/session/event-dispatcher.ts
@@ -474,11 +474,17 @@ export const layerWith = (options?: LayerOptions) =>
       const pumpRetries: Interface["pumpRetries"] = (nowArg) =>
         Effect.gen(function* () {
           const at = nowArg ?? now()
-          const due = yield* bus.dueRetries(at)
+          // RISK-001: claim our group's due rows before executing — dueRetries() was an unlocked
+          // global scan, so two processes could re-drive the same retry concurrently. The claim's
+          // lease (default 5min) must exceed worst-case processing time; if it lapses mid-handling
+          // another claimant may re-drive the same event (bounded duplicate, same as pre-fix).
+          const claim = yield* bus.claimDue({
+            subscriptionGroup: DISPATCH_GROUP,
+            claimantId: `event-dispatcher:${process.pid}`,
+            now: at,
+          })
           let redriven = 0
-          for (const delivery of due) {
-            // only our own group's deliveries — dueRetries is global across groups.
-            if (delivery.subscriptionGroup !== DISPATCH_GROUP) continue
+          for (const delivery of claim.deliveries) {
             const event = yield* bus.getByID(delivery.eventID)
             if (!event) {
               // event row gone (retention sweep?) — the delivery is unrecoverable; leave it for the DLQ.
diff --git a/packages/deepagent-code/src/session/facade-activity.ts b/packages/deepagent-code/src/session/facade-activity.ts
new file mode 100644
index 00000000..08782579
--- /dev/null
+++ b/packages/deepagent-code/src/session/facade-activity.ts
@@ -0,0 +1,986 @@
+/**
+ * FEAT-011 T3 — FacadeActivity dispatcher (统一活动 facade 入口).
+ *
+ * Design: docs/feature-002-407.md (§2 tool contract, §11 non-goals).
+ *
+ * The facade is a THIN delegation layer over the three existing runners — it NEVER duplicates
+ * lifecycle state and NEVER builds a parallel runtime:
+ *
+ *   task  → TaskDispatcher durable queue (admitTaskRun → input projection → enqueueRun),
+ *           concurrency through TaskConcurrency's two-layer semaphore.
+ *   goal  → GoalManager.start / pause / resume / stop; steer via the goal_steer channel.
+ *   panel → PanelConsult.consultPanel wrapped in a BackgroundJob owned by THIS service.
+ *
+ * Every start first writes a `session_facade_activity` row (state=active). The partial unique
+ * index `(parent_session_id, subkind) WHERE state='active'` is the fail-closed admission fence:
+ * a second active facade of the same subkind for the same parent session is refused. Terminal
+ * state is settled through DeepAgentActivityAuthority.settle(kind=facade) with the
+ * mutation_epoch CAS token.
+ *
+ * Ownership is runtime-owned: each start mints `${processOwnerToken}:facade:<uuid>` which is
+ * only used for runner-side bookkeeping and is NEVER surfaced to the model.
+ */
+import { randomUUID } from "node:crypto"
+import { and, desc, eq } from "drizzle-orm"
+import { Context, Data, Effect, Layer, Option } from "effect"
+import { Database } from "@deepagent-code/core/database/database"
+import { SessionFacadeActivityTable } from "@deepagent-code/core/deepagent/activity-authority.sql"
+import { DeepAgentActivityAuthority } from "@deepagent-code/core/deepagent/index"
+import { Prompt } from "@deepagent-code/core/session/prompt"
+import { TaskRunTable } from "@deepagent-code/core/session/sql"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { Agent } from "@/agent/agent"
+import { deriveSubagentSessionPermission } from "@/agent/subagent-permissions"
+import { BackgroundJob } from "@/background/job"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { PanelConsult } from "@/panel/consult"
+import { Provider } from "@/provider/provider"
+import { GoalDriver } from "@/session/goal-driver"
+import { GoalManager } from "@/session/goal-manager"
+import { GoalLoopWiring } from "@/session/goal-loop-wiring"
+import { LegacyTaskInput } from "@/session/task-input"
+import { SessionPrompt } from "@/session/prompt"
+import { SessionSteer } from "@/session/steer"
+import { SessionActivityOwner } from "@/session/activity-owner"
+import { Session } from "@/session/session"
+import { TaskDispatcher } from "@/session/task-dispatcher"
+import { MessageID, SessionID } from "@/session/schema"
+import { Identifier } from "@/id/id"
+import { TaskConcurrency } from "@/tool/task-concurrency"
+import {
+  admitTaskRun,
+  closeTask,
+  getTaskRun,
+  transitionToAdmitting,
+  type Run as TaskRun,
+} from "@/tool/task-run"
+
+export type FacadeSubkind = "task" | "goal" | "panel"
+
+/**
+ * Hard budget caps the facade enforces (policy ceiling). Model-supplied limits are clamped with
+ * `min` against these — mirroring GoalManager's DEFAULT_LIMITS pattern (never loosen the policy).
+ */
+export const FACADE_POLICY_LIMITS = {
+  maxTicks: 50,
+  maxTokens: 500_000,
+  maxWallclockMs: 60 * 60 * 1000,
+} as const
+
+export type FacadeBudget = {
+  readonly maxTicks: number
+  readonly maxTokens: number
+  readonly maxWallclockMs: number
+}
+
+const clampPositiveInt = (requested: number | undefined, ceiling: number): number => {
+  if (requested == null || !Number.isFinite(requested) || requested <= 0) return ceiling
+  return Math.min(Math.floor(requested), ceiling)
+}
+
+/** min-clamp model limits against the policy ceiling; unset/invalid fields fall back to the ceiling. */
+export const clampFacadeBudget = (requested?: Partial<FacadeBudget>): FacadeBudget => ({
+  maxTicks: clampPositiveInt(requested?.maxTicks, FACADE_POLICY_LIMITS.maxTicks),
+  maxTokens: clampPositiveInt(requested?.maxTokens, FACADE_POLICY_LIMITS.maxTokens),
+  maxWallclockMs: clampPositiveInt(requested?.maxWallclockMs, FACADE_POLICY_LIMITS.maxWallclockMs),
+})
+
+/**
+ * T6 — bounded projection helper. Code-point safe slice (never splits a surrogate pair) with an
+ * explicit truncation marker so callers can programmatically detect the bound (design G5).
+ */
+export const applyResultBound = (
+  text: string,
+  maxChars: number,
+): { readonly text: string; readonly truncated: boolean } => {
+  if (text.length <= maxChars) return { text, truncated: false }
+  const points = Array.from(text)
+  if (points.length <= maxChars) return { text, truncated: false }
+  return { text: `${points.slice(0, maxChars).join("")}…[truncated]`, truncated: true }
+}
+
+export class FacadeActivityConflict extends Data.TaggedError("FacadeActivity.Conflict")<{
+  readonly sessionID: string
+  readonly subkind: FacadeSubkind
+  readonly reason: string
+}> {}
+
+export class FacadeActivityNotFound extends Data.TaggedError("FacadeActivity.NotFound")<{
+  readonly sessionID: string
+  readonly subkind: FacadeSubkind
+}> {}
+
+export class FacadeActivityRunnerUnavailable extends Data.TaggedError("FacadeActivity.RunnerUnavailable")<{
+  readonly subkind: FacadeSubkind
+  readonly reason: string
+}> {}
+
+export class FacadeActivityInvalidInput extends Data.TaggedError("FacadeActivity.InvalidInput")<{
+  readonly reason: string
+}> {}
+
+export class FacadeActivityUnsupportedControl extends Data.TaggedError("FacadeActivity.UnsupportedControl")<{
+  readonly subkind: FacadeSubkind
+  readonly action: FacadeControlAction
+  readonly reason: string
+}> {}
+
+export type FacadeError =
+  | FacadeActivityConflict
+  | FacadeActivityNotFound
+  | FacadeActivityRunnerUnavailable
+  | FacadeActivityInvalidInput
+  | FacadeActivityUnsupportedControl
+
+export type FacadeStartInput = {
+  readonly sessionID: string
+  readonly subkind: FacadeSubkind
+  readonly objective: string
+  readonly budget?: Partial<FacadeBudget>
+  /** The spawning tool-call id; doubles as the task_run.tool_call_id join key for task facades. */
+  readonly spawnToolCallID?: string
+  readonly parentMessageID?: string
+  /** task-only: subagent type (defaults to "explore"). */
+  readonly subagentType?: string
+  /** task-only: the task prompt (defaults to the objective). */
+  readonly prompt?: string
+}
+
+export type FacadeStartResult = {
+  readonly activityID: string
+  readonly subkind: FacadeSubkind
+  readonly budget: FacadeBudget
+  /** Domain reference — task: run/child session; goal: goalId; panel: background job id. */
+  readonly ref: Record<string, string>
+}
+
+export type FacadeStatusEntry = {
+  readonly activityID: string
+  readonly subkind: FacadeSubkind
+  readonly state: string
+  readonly reason?: string
+  readonly createdAt: number
+  readonly settledAt?: number
+  readonly objective?: string
+  readonly ref: Record<string, string>
+}
+
+export type FacadeResultProjection = {
+  readonly activityID: string
+  readonly subkind: FacadeSubkind
+  readonly terminal: boolean
+  /** Facade base state (active/settled/interrupted/failed). */
+  readonly state: string
+  readonly reason?: string
+  readonly summary?: string
+  /** task subkind: structured settlement receipt (bounded). */
+  readonly receipt?: Record<string, unknown>
+  /** panel subkind: the arbiter verdict (bounded). */
+  readonly verdict?: unknown
+  /** goal subkind: terminal phase snapshot. */
+  readonly phase?: string
+  readonly truncated: boolean
+}
+
+export type FacadeControlAction = "pause" | "resume" | "stop" | "steer"
+
+export type FacadeControlInput = {
+  readonly sessionID: string
+  readonly subkind: FacadeSubkind
+  readonly action: FacadeControlAction
+  /** steer-only: the guidance text admitted to the goal_steer channel. */
+  readonly message?: string
+  readonly reason?: string
+}
+
+export type FacadeControlResult = {
+  readonly applied: boolean
+  readonly subkind: FacadeSubkind
+  readonly action: FacadeControlAction
+  readonly detail: string
+}
+
+export interface Interface {
+  readonly start: (input: FacadeStartInput) => Effect.Effect<FacadeStartResult, FacadeError>
+  readonly status: (input: {
+    readonly sessionID: string
+    readonly subkind?: FacadeSubkind
+    readonly limit?: number
+  }) => Effect.Effect<ReadonlyArray<FacadeStatusEntry>>
+  readonly result: (input: {
+    readonly sessionID: string
+    readonly subkind: FacadeSubkind
+  }) => Effect.Effect<FacadeResultProjection, FacadeActivityNotFound>
+  readonly control: (input: FacadeControlInput) => Effect.Effect<FacadeControlResult, FacadeError>
+}
+
+export class Service extends Context.Service<Service, Interface>()("@deepagent-code/FacadeActivity") {}
+
+type FacadeRow = typeof SessionFacadeActivityTable.$inferSelect
+
+const STATUS_LIMIT_CEILING = 20
+
+/**
+ * The dispatcher construction effect. Hard requirements are ONLY Database + RuntimeFlags; every
+ * runner dependency (GoalManager, SessionPrompt, BackgroundJob, SessionSteer, Session/Agent/
+ * Provider) is resolved via serviceOption so the registry can build the facade inline from
+ * whatever the surrounding graph provides, without adding requirements to ToolRegistry.layer.
+ */
+export const build: Effect.Effect<Interface, never, Database.Service | RuntimeFlags.Service> = Effect.gen(
+  function* () {
+    const database = yield* Database.Service
+    const { db } = database
+    const flags = yield* RuntimeFlags.Service
+    const goals = Option.getOrUndefined(yield* Effect.serviceOption(GoalManager.Service))
+    const steerBuffer = Option.getOrUndefined(yield* Effect.serviceOption(SessionSteer.Service))
+    const background = Option.getOrUndefined(yield* Effect.serviceOption(BackgroundJob.Service))
+    const sessions = Option.getOrUndefined(yield* Effect.serviceOption(Session.Service))
+    const agents = Option.getOrUndefined(yield* Effect.serviceOption(Agent.Service))
+    const sessionPrompt = Option.getOrUndefined(yield* Effect.serviceOption(SessionPrompt.Service))
+    const provider = Option.getOrUndefined(yield* Effect.serviceOption(Provider.Service))
+
+    // Runtime-owned facade owners: minted per start, used only for runner-side bookkeeping and
+    // NEVER returned to the model (the facade row intentionally has no owner_token column).
+    const facadeOwners = new Map<string, string>()
+
+    // ── facade base-table IO ──────────────────────────────────────────────────────────────────
+
+    const insertFacadeRow = (input: {
+      activityID: string
+      subkind: FacadeSubkind
+      sessionID: string
+      objective: string
+      budget: FacadeBudget
+      spawnToolCallID?: string
+      parentMessageID?: string
+    }) =>
+      Effect.gen(function* () {
+        const inserted = yield* db
+          .insert(SessionFacadeActivityTable)
+          .values({
+            activity_id: input.activityID,
+            subkind: input.subkind,
+            parent_session_id: SessionID.make(input.sessionID),
+            spawn_tool_call_id: input.spawnToolCallID,
+            objective_text: input.objective,
+            budget_json: input.budget,
+            state: "active",
+            source: "activity_facade",
+            created_at: Date.now(),
+            mutation_epoch: 0,
+          })
+          // The partial unique index (parent_session_id, subkind) WHERE state='active' is the
+          // fail-closed fence: a concurrent/lingering active facade makes this insert vanish.
+          .onConflictDoNothing()
+          .returning()
+          .get()
+          .pipe(Effect.orDie)
+        if (!inserted)
+          return yield* Effect.fail(
+            new FacadeActivityConflict({
+              sessionID: input.sessionID,
+              subkind: input.subkind,
+              reason: "an active facade of this subkind already exists for this session; settle it first",
+            }),
+          )
+        return inserted
+      })
+
+    const readFacadeRow = (activityID: string) =>
+      db
+        .select()
+        .from(SessionFacadeActivityTable)
+        .where(eq(SessionFacadeActivityTable.activity_id, activityID))
+        .get()
+        .pipe(Effect.orDie)
+
+    const latestFacadeRow = (sessionID: string, subkind: FacadeSubkind) =>
+      db
+        .select()
+        .from(SessionFacadeActivityTable)
+        .where(
+          and(
+            eq(SessionFacadeActivityTable.parent_session_id, SessionID.make(sessionID)),
+            eq(SessionFacadeActivityTable.subkind, subkind),
+          ),
+        )
+        .orderBy(desc(SessionFacadeActivityTable.created_at))
+        .get()
+        .pipe(Effect.orDie)
+
+    const listFacadeRows = (sessionID: string, subkind: FacadeSubkind | undefined, limit: number) =>
+      db
+        .select()
+        .from(SessionFacadeActivityTable)
+        .where(
+          and(
+            eq(SessionFacadeActivityTable.parent_session_id, SessionID.make(sessionID)),
+            ...(subkind ? [eq(SessionFacadeActivityTable.subkind, subkind)] : []),
+          ),
+        )
+        .orderBy(desc(SessionFacadeActivityTable.created_at))
+        .limit(limit)
+        .all()
+        .pipe(Effect.orDie)
+
+    // ── settlement via the ActivityAuthority facade branch (mutation_epoch CAS) ───────────────
+
+    const settleFacadeRow = (row: FacadeRow, state: "completed" | "interrupted" | "recovery_required", reason: string) =>
+      DeepAgentActivityAuthority.settle({
+        activityKind: "facade",
+        activityID: row.activity_id,
+        expectedVersion: row.mutation_epoch,
+        state,
+        terminalReason: reason,
+      }).pipe(
+        // The authority set requires Database.Service; pin it to the instance captured at build
+        // time so converge/settle stay requirement-free for the public ports.
+        Effect.provideService(Database.Service, database),
+        Effect.map(() => true),
+        // A lost CAS / already-terminal row is not a facade defect — convergence is best-effort
+        // and the domain authority remains the source of truth.
+        Effect.catchCause(() => Effect.succeed(false)),
+      )
+
+    // ── domain probes (the runners remain the state authority) ────────────────────────────────
+
+    const taskRunForFacade = (row: FacadeRow) => {
+      if (!row.spawn_tool_call_id) return Effect.succeed(undefined)
+      return db
+        .select()
+        .from(TaskRunTable)
+        .where(
+          and(
+            eq(TaskRunTable.parent_session_id, row.parent_session_id),
+            eq(TaskRunTable.tool_call_id, row.spawn_tool_call_id),
+          ),
+        )
+        .orderBy(desc(TaskRunTable.generation))
+        .get()
+        .pipe(Effect.orDie)
+    }
+
+    const TASK_TERMINAL_STATES = new Set(["completed", "error", "failed", "cancelled", "interrupted"])
+    const GOAL_TERMINAL_PHASES = new Set(["done", "needs_human", "rolled_back", "stopped"])
+
+    /**
+     * Lazy convergence: when the domain runner already reached a terminal state but the facade
+     * row is still active, settle it through the authority. task/goal runs are NOT owned by the
+     * facade, so settlement happens at the next status/result/control touch point (panel settles
+     * eagerly from its own background job).
+     */
+    const converge = (row: FacadeRow): Effect.Effect<FacadeRow> =>
+      Effect.gen(function* () {
+        if (row.state !== "active") return row
+        if (row.subkind === "task") {
+          const run = yield* taskRunForFacade(row)
+          if (!run || !TASK_TERMINAL_STATES.has(run.state)) return row
+          const state =
+            run.state === "completed"
+              ? ("completed" as const)
+              : run.state === "cancelled" || run.state === "interrupted"
+                ? ("interrupted" as const)
+                : ("recovery_required" as const)
+          yield* settleFacadeRow(row, state, run.reason ?? `task_run_${run.state}`)
+        } else if (row.subkind === "goal") {
+          if (!goals) return row
+          const snapshot = yield* goals.status(row.parent_session_id).pipe(Effect.catchCause(() => Effect.succeed(null)))
+          if (!snapshot || !GOAL_TERMINAL_PHASES.has(snapshot.phase)) return row
+          const state =
+            snapshot.phase === "done"
+              ? ("completed" as const)
+              : snapshot.phase === "rolled_back"
+                ? ("recovery_required" as const)
+                : ("interrupted" as const)
+          yield* settleFacadeRow(row, state, `goal_${snapshot.phase}`)
+        } else {
+          if (!background) return row
+          const job = yield* background.get(row.activity_id).pipe(Effect.catchCause(() => Effect.succeed(undefined)))
+          if (!job || job.status === "running") return row
+          const state =
+            job.status === "completed"
+              ? ("completed" as const)
+              : job.status === "cancelled"
+                ? ("interrupted" as const)
+                : ("recovery_required" as const)
+          yield* settleFacadeRow(row, state, `panel_${job.status}`)
+        }
+        return (yield* readFacadeRow(row.activity_id)) ?? row
+      })
+
+    // ── subkind delegation: task ──────────────────────────────────────────────────────────────
+
+    // Domain errors that escape the delegation internals (input-projection conflicts, raw SQL
+    // errors) are folded into RunnerUnavailable so the public ports expose ONLY FacadeError.
+    const toFacadeError = (error: unknown): FacadeError =>
+      error instanceof FacadeActivityConflict ||
+      error instanceof FacadeActivityNotFound ||
+      error instanceof FacadeActivityRunnerUnavailable ||
+      error instanceof FacadeActivityInvalidInput ||
+      error instanceof FacadeActivityUnsupportedControl
+        ? error
+        : new FacadeActivityRunnerUnavailable({
+            subkind: "task",
+            reason: `task delegation failed: ${
+              typeof error === "object" && error !== null && "_tag" in error ? String((error as { _tag: unknown })._tag) : "unknown"
+            }`,
+          })
+
+    const startTask = (
+      row: FacadeRow,
+      input: FacadeStartInput,
+    ): Effect.Effect<Record<string, string>, FacadeError> =>
+      Effect.gen(function* () {
+        if (flags.subagentControlPlane !== "durable")
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({
+              subkind: "task",
+              reason:
+                "task facade delegates to the durable TaskDispatcher queue; requires DEEPAGENT_CODE_SUBAGENT_CONTROL_PLANE=durable",
+            }),
+          )
+        if (!sessions || !agents || !provider)
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({ subkind: "task", reason: "session/agent/provider services unavailable" }),
+          )
+        const subagentType = input.subagentType ?? "explore"
+        const agentInfo = yield* agents.get(subagentType)
+        if (!agentInfo)
+          return yield* Effect.fail(
+            new FacadeActivityInvalidInput({ reason: `unknown subagent_type: ${subagentType}` }),
+          )
+        const model = yield* provider.defaultModel().pipe(
+          Effect.catchCause(() =>
+            Effect.fail(
+              new FacadeActivityRunnerUnavailable({ subkind: "task", reason: "no default model configured" }),
+            ),
+          ),
+        )
+        const promptText = input.prompt ?? input.objective
+        const toolCallID = row.spawn_tool_call_id ?? `facade:${row.activity_id}`
+        const parentMessageID = input.parentMessageID
+          ? MessageID.make(input.parentMessageID)
+          : MessageID.ascending("facade")
+
+        // Concurrency: reuse TaskConcurrency's two-layer (session + agent-type) semaphore — the
+        // facade must not bypass the code-layer cap the task tool enforces.
+        return yield* TaskConcurrency.withTaskSlot({
+          parentSessionID: row.parent_session_id,
+          subagentType,
+          effect: Effect.gen(function* () {
+            const parent = yield* sessions.get(SessionID.make(row.parent_session_id)).pipe(Effect.orDie)
+            const parentAgent = parent.agent
+              ? yield* agents.get(parent.agent).pipe(Effect.orElseSucceed(() => undefined))
+              : undefined
+            const childPermission = deriveSubagentSessionPermission({
+              parentSessionPermission: parent.permission ?? [],
+              parentAgent,
+              subagent: agentInfo,
+            })
+            const admission = yield* admitTaskRun({
+              parentSessionID: SessionID.make(row.parent_session_id),
+              parentMessageID,
+              toolCallID,
+              request: {
+                facade: "activity_facade",
+                subagent_type: subagentType,
+                description: input.objective,
+                prompt: promptText,
+              },
+              deliveryMode: "background",
+              // The facade never escalates: delegated tasks start read-only; write worktree
+              // isolation remains the dedicated task tool's explicit surface.
+              mutationCapability: "read_only",
+              toolCapabilityHash: "facade-static",
+              inputState: "pending",
+              workspaceMode: "shared",
+              workspaceOwner: "parent",
+              workspaceVisibility: "live",
+              parentDirtyPolicy: "allow_live",
+              workspacePreflightState: "pending",
+              sessionMode: "new",
+              executionSpec: {
+                description: input.objective,
+                prompt: { text: promptText },
+                agent: agentInfo.name,
+                model: { providerID: model.providerID, modelID: model.modelID },
+                permission: childPermission,
+              },
+            }).pipe(
+              Effect.provideService(Database.Service, database),
+              Effect.mapError(
+                (error) =>
+                  new FacadeActivityConflict({
+                    sessionID: row.parent_session_id,
+                    subkind: "task",
+                    reason: `task admission refused: ${error._tag}/${"reason" in error ? error.reason : "unknown"}`,
+                  }),
+              ),
+            )
+
+            if (admission.exactRetry && TASK_TERMINAL_STATES.has(admission.run.state)) {
+              const replayed: Record<string, string> = {
+                runID: admission.run.runID,
+                childSessionID: admission.run.childSessionID,
+                replayed: "true",
+              }
+              return replayed
+            }
+
+            // Child session adoption (mirrors task.ts's durable projection ordering).
+            const existingChild = yield* sessions
+              .get(admission.run.childSessionID)
+              .pipe(Effect.catchCause(() => Effect.succeed(undefined)))
+            if (!existingChild) {
+              yield* sessions
+                .create({
+                  id: admission.run.childSessionID,
+                  parentID: SessionID.make(row.parent_session_id),
+                  title: `${input.objective} (@${agentInfo.name} facade task)`,
+                  agent: agentInfo.name,
+                  model: {
+                    id: ModelV2.ID.make(model.modelID),
+                    providerID: ProviderV2.ID.make(model.providerID),
+                  },
+                  permission: childPermission,
+                  directory: parent.directory,
+                })
+                .pipe(Effect.orDie)
+            }
+            // Terminal-projector identity fence (run_id/generation metadata) — minimal replica of
+            // task.ts's private projectSubagentRun, required by the settlement projection path.
+            const childSession =
+              existingChild ?? (yield* sessions.get(admission.run.childSessionID).pipe(Effect.orDie))
+            const meta = (childSession.metadata ?? {}) as Record<string, unknown>
+            const deepagent = (meta.deepagent ?? {}) as Record<string, unknown>
+            yield* sessions
+              .setMetadata({
+                sessionID: admission.run.childSessionID,
+                metadata: {
+                  ...meta,
+                  deepagent: {
+                    ...deepagent,
+                    subagent: {
+                      finished: false,
+                      state: "researching",
+                      phase: "research",
+                      run_id: admission.run.runID,
+                      generation: admission.run.generation,
+                      attempts: 0,
+                      started_at: Date.now(),
+                    },
+                  },
+                },
+              })
+              .pipe(Effect.orDie)
+
+            // Durable input projection: admitted → admitting → input ready → queued. The executor
+            // startup CAS requires input_state="ready", so this sequence is mandatory.
+            const latest = yield* getTaskRun(admission.run.runID).pipe(
+              Effect.provideService(Database.Service, database),
+            )
+            if (!latest)
+              return yield* Effect.fail(
+                new FacadeActivityRunnerUnavailable({ subkind: "task", reason: `run ${admission.run.runID} disappeared` }),
+              )
+            if (latest.inputState !== "ready" && latest.inputState !== "legacy") {
+              const admitting = yield* transitionToAdmitting({
+                runID: admission.run.runID,
+                version: latest.version,
+              }).pipe(Effect.provideService(Database.Service, database))
+              if (admitting) {
+                const prepared = yield* LegacyTaskInput.prepare(admitting, undefined).pipe(Effect.orDie)
+                yield* LegacyTaskInput.projectExact({
+                  prepared,
+                  runID: admission.run.runID,
+                  expectedRunVersion: admitting.version,
+                }).pipe(Effect.provideService(Database.Service, database))
+              }
+            }
+            const current = yield* getTaskRun(admission.run.runID).pipe(
+              Effect.provideService(Database.Service, database),
+            )
+            if (current && (current.inputState === "ready" || current.inputState === "legacy")) {
+              yield* TaskDispatcher.enqueueRun({
+                runID: admission.run.runID,
+                runVersion: current.version,
+              }).pipe(Effect.provideService(Database.Service, database))
+            }
+            const admitted: Record<string, string> = {
+              runID: admission.run.runID,
+              childSessionID: admission.run.childSessionID,
+            }
+            return admitted
+          }),
+        }).pipe(Effect.mapError(toFacadeError))
+      })
+
+    // ── subkind delegation: goal ──────────────────────────────────────────────────────────────
+
+    const startGoal = (
+      input: FacadeStartInput,
+      budget: FacadeBudget,
+    ): Effect.Effect<Record<string, string>, FacadeError> =>
+      Effect.gen(function* () {
+        if (!goals)
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({ subkind: "goal", reason: "GoalManager service unavailable" }),
+          )
+        const snapshot = yield* goals
+          .start({
+            sessionID: input.sessionID,
+            objective: input.objective,
+            limits: {
+              maxTicks: budget.maxTicks,
+              maxTokens: budget.maxTokens,
+              maxWallclockMs: budget.maxWallclockMs,
+            },
+          })
+          .pipe(
+            Effect.mapError(
+              (error) => new FacadeActivityInvalidInput({ reason: `goal rejected: ${error.message}` }),
+            ),
+          )
+        return { goalID: snapshot.goalId, planDocID: snapshot.planDocId, phase: snapshot.phase }
+      })
+
+    // ── subkind delegation: panel (facade-owned background job) ───────────────────────────────
+
+    const startPanel = (
+      row: FacadeRow,
+      input: FacadeStartInput,
+    ): Effect.Effect<Record<string, string>, FacadeError> =>
+      Effect.gen(function* () {
+        if (!background || !sessions || !agents || !sessionPrompt || !provider)
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({
+              subkind: "panel",
+              reason: "panel runner dependencies (session/agent/prompt/provider/background-job) unavailable",
+            }),
+          )
+        const model = yield* provider.defaultModel().pipe(
+          Effect.catchCause(() =>
+            Effect.fail(
+              new FacadeActivityRunnerUnavailable({ subkind: "panel", reason: "no default model configured" }),
+            ),
+          ),
+        )
+        // Same child-session turn runner the goal loop + HTTP panel route use — no parallel runtime.
+        const runTurn = GoalLoopWiring.makeTaskSubagentRunner({
+          sessions,
+          agents,
+          sessionPrompt,
+          parentSessionID: SessionID.make(row.parent_session_id),
+          model: { providerID: model.providerID, modelID: model.modelID },
+          purpose: "panel",
+        })
+        const panelTurnRunner = (turnInput: Parameters<typeof runTurn>[0]) =>
+          runTurn(turnInput).pipe(Effect.map((r) => ({ structured: r.structured })))
+        const job = yield* background.start({
+          id: row.activity_id,
+          type: "facade-panel",
+          title: applyResultBound(input.objective, 120).text,
+          metadata: { facadeActivityID: row.activity_id, subkind: "panel" },
+          run: PanelConsult.consultPanel(
+            { question: input.objective, codeRefs: [], parentSessionID: row.parent_session_id },
+            { runTurn: panelTurnRunner },
+          ).pipe(
+            Effect.tap((verdict) =>
+              settleFacadeRow(row, "completed", `panel_${verdict.decision}`).pipe(Effect.ignore),
+            ),
+            Effect.map((verdict) => JSON.stringify(verdict)),
+            Effect.catchCause((cause) =>
+              settleFacadeRow(row, "recovery_required", "panel_run_error").pipe(
+                Effect.ignore,
+                Effect.andThen(Effect.failCause(cause)),
+              ),
+            ),
+          ),
+        })
+        return { jobID: job.id }
+      })
+
+    // ── public ports ──────────────────────────────────────────────────────────────────────────
+
+    const start: Interface["start"] = Effect.fn("FacadeActivity.start")(function* (input) {
+      const objective = input.objective.trim()
+      if (!objective)
+        return yield* Effect.fail(new FacadeActivityInvalidInput({ reason: "objective must be non-empty" }))
+      const budget = clampFacadeBudget(input.budget)
+      // "job" is the closest legal ascending prefix for a facade-owned background activity id.
+      const activityID = Identifier.ascending("job")
+      const ownerToken = `${SessionActivityOwner.processOwnerToken}:facade:${randomUUID()}`
+      const spawnToolCallID = input.spawnToolCallID ?? `facade:${activityID}`
+      const row = yield* insertFacadeRow({
+        activityID,
+        subkind: input.subkind,
+        sessionID: input.sessionID,
+        objective,
+        budget,
+        spawnToolCallID,
+      })
+      facadeOwners.set(activityID, ownerToken)
+
+      // Delegation failure settles the freshly-admitted row as failed (fail-closed: an active
+      // facade row with no live runner would block the unique index forever).
+      const delegation: Effect.Effect<Record<string, string>, FacadeError> =
+        input.subkind === "task"
+          ? startTask({ ...row, spawn_tool_call_id: spawnToolCallID }, input)
+          : input.subkind === "goal"
+            ? startGoal(input, budget)
+            : startPanel(row, input)
+      return yield* delegation.pipe(
+        Effect.tap((ref) => Effect.sync(() => facadeOwners.set(activityID, ownerToken))),
+        Effect.map((ref) => ({ activityID, subkind: input.subkind, budget, ref })),
+        Effect.catch((error: FacadeError) =>
+          Effect.gen(function* () {
+            const current = yield* readFacadeRow(activityID)
+            if (current && current.state === "active") {
+              yield* settleFacadeRow(current, "recovery_required", `start_failed:${error._tag}`).pipe(Effect.ignore)
+            }
+            return yield* Effect.fail(error)
+          }),
+        ),
+      )
+    })
+
+    const status: Interface["status"] = Effect.fn("FacadeActivity.status")(function* (input) {
+      const limit = Math.max(1, Math.min(input.limit ?? STATUS_LIMIT_CEILING, STATUS_LIMIT_CEILING))
+      const rows = yield* listFacadeRows(input.sessionID, input.subkind, limit)
+      const converged: FacadeStatusEntry[] = []
+      for (const row of rows) {
+        const current = yield* converge(row)
+        const ref: Record<string, string> = {}
+        if (current.subkind === "task") {
+          const run = yield* taskRunForFacade(current)
+          if (run) {
+            ref.runID = run.run_id
+            ref.childSessionID = run.child_session_id
+            ref.runState = run.state
+          }
+        } else if (current.subkind === "goal") {
+          const snapshot = goals
+            ? yield* goals.status(current.parent_session_id).pipe(Effect.catchCause(() => Effect.succeed(null)))
+            : null
+          if (snapshot) {
+            ref.goalID = snapshot.goalId
+            ref.phase = snapshot.phase
+          }
+        } else {
+          const job = background
+            ? yield* background.get(current.activity_id).pipe(Effect.catchCause(() => Effect.succeed(undefined)))
+            : undefined
+          if (job) {
+            ref.jobID = job.id
+            ref.jobStatus = job.status
+          }
+        }
+        converged.push({
+          activityID: current.activity_id,
+          subkind: current.subkind,
+          state: current.state,
+          reason: current.reason_code ?? undefined,
+          createdAt: current.created_at,
+          settledAt: current.settled_at ?? undefined,
+          objective: current.objective_text ? applyResultBound(current.objective_text, 200).text : undefined,
+          ref,
+        })
+      }
+      return converged
+    })
+
+    const result: Interface["result"] = Effect.fn("FacadeActivity.result")(function* (input) {
+      const row = yield* latestFacadeRow(input.sessionID, input.subkind)
+      if (!row) return yield* Effect.fail(new FacadeActivityNotFound(input))
+      const current = yield* converge(row)
+      const maxChars = flags.subagentOutputMaxChars
+      const summary = current.objective_text ? applyResultBound(current.objective_text, maxChars) : undefined
+      if (current.state === "active") {
+        return {
+          activityID: current.activity_id,
+          subkind: current.subkind,
+          terminal: false,
+          state: current.state,
+          summary: summary?.text,
+          truncated: summary?.truncated ?? false,
+        }
+      }
+      let truncated = summary?.truncated ?? false
+      let receipt: Record<string, unknown> | undefined
+      let verdict: unknown
+      let phase: string | undefined
+      if (current.subkind === "task") {
+        const run = yield* taskRunForFacade(current)
+        if (run) {
+          const output = run.output ? applyResultBound(run.output, maxChars) : undefined
+          truncated = truncated || (output?.truncated ?? false)
+          receipt = {
+            runID: run.run_id,
+            childSessionID: run.child_session_id,
+            runState: run.state,
+            reason: run.reason ?? undefined,
+            output: output?.text,
+          }
+        }
+      } else if (current.subkind === "goal") {
+        const snapshot = goals
+          ? yield* goals.status(current.parent_session_id).pipe(Effect.catchCause(() => Effect.succeed(null)))
+          : null
+        phase = snapshot?.phase
+      } else {
+        const job = background
+          ? yield* background.get(current.activity_id).pipe(Effect.catchCause(() => Effect.succeed(undefined)))
+          : undefined
+        if (job?.output) {
+          const bounded = applyResultBound(job.output, maxChars)
+          truncated = truncated || bounded.truncated
+          try {
+            verdict = JSON.parse(job.output)
+          } catch {
+            verdict = bounded.text
+          }
+        }
+      }
+      return {
+        activityID: current.activity_id,
+        subkind: current.subkind,
+        terminal: true,
+        state: current.state,
+        reason: current.reason_code ?? undefined,
+        summary: summary?.text,
+        ...(receipt ? { receipt } : {}),
+        ...(verdict !== undefined ? { verdict } : {}),
+        ...(phase !== undefined ? { phase } : {}),
+        truncated,
+      }
+    })
+
+    const control: Interface["control"] = Effect.fn("FacadeActivity.control")(function* (input) {
+      const row = yield* latestFacadeRow(input.sessionID, input.subkind)
+      if (!row) return yield* Effect.fail(new FacadeActivityNotFound({ sessionID: input.sessionID, subkind: input.subkind }))
+
+      let outcome: FacadeControlResult
+      if (input.subkind === "goal") {
+        if (!goals)
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({ subkind: "goal", reason: "GoalManager service unavailable" }),
+          )
+        if (input.action === "pause") {
+          const applied = yield* goals.pause(input.sessionID)
+          outcome = { applied, subkind: "goal", action: "pause", detail: applied ? "goal paused" : "no running goal to pause" }
+        } else if (input.action === "resume") {
+          const applied = yield* goals.resume(input.sessionID)
+          outcome = { applied, subkind: "goal", action: "resume", detail: applied ? "goal resumed" : "no paused goal to resume" }
+        } else if (input.action === "stop") {
+          const applied = yield* goals.stop(input.sessionID)
+          outcome = { applied, subkind: "goal", action: "stop", detail: applied ? "goal stop requested" : "no active goal to stop" }
+        } else if (input.action === "steer") {
+          const text = input.message?.trim()
+          if (!text)
+            return yield* Effect.fail(new FacadeActivityInvalidInput({ reason: "steer requires a non-empty message" }))
+          if (!steerBuffer)
+            return yield* Effect.fail(
+              new FacadeActivityRunnerUnavailable({ subkind: "goal", reason: "steer buffer unavailable" }),
+            )
+          const admitted = yield* steerBuffer
+            .admit({
+              sessionID: SessionID.make(input.sessionID),
+              prompt: Prompt.make({ text }),
+              delivery: GoalDriver.GOAL_STEER_DELIVERY,
+            })
+            .pipe(
+              Effect.mapError(
+                (error) => new FacadeActivityInvalidInput({ reason: `steer admission refused: ${error._tag}` }),
+              ),
+            )
+          outcome = { applied: true, subkind: "goal", action: "steer", detail: `steer admitted as ${admitted.id}` }
+        } else {
+          return yield* Effect.fail(
+            new FacadeActivityUnsupportedControl({
+              subkind: "goal",
+              action: input.action,
+              reason: "goal supports pause/resume/stop/steer",
+            }),
+          )
+        }
+      } else if (input.subkind === "task") {
+        // Honest control-plane gap: the durable task surface only offers close (best-effort for
+        // active runs, immediate for queued/admitted). pause/resume/steer are NOT fabricated —
+        // callers fall back to stop.
+        if (input.action !== "stop")
+          return yield* Effect.fail(
+            new FacadeActivityUnsupportedControl({
+              subkind: "task",
+              action: input.action,
+              reason: "task facade supports only stop (delegates to durable task_close); pause/resume/steer are not available",
+            }),
+          )
+        const run = yield* taskRunForFacade(row)
+        if (!run)
+          outcome = { applied: false, subkind: "task", action: "stop", detail: "no task run recorded for this facade" }
+        else {
+          const closeResult = yield* closeTask({
+            childSessionID: SessionID.make(run.child_session_id),
+            parentSessionID: SessionID.make(row.parent_session_id),
+            reason: input.reason ?? "facade_stop",
+          }).pipe(
+            Effect.provideService(Database.Service, database),
+            Effect.mapError(
+              (error) =>
+                new FacadeActivityConflict({
+                  sessionID: row.parent_session_id,
+                  subkind: "task",
+                  reason: `task close refused: ${error._tag}`,
+                }),
+            ),
+          )
+          outcome = {
+            applied: closeResult.closed,
+            subkind: "task",
+            action: "stop",
+            detail: closeResult.closed
+              ? "task close requested; active runs settle at the next provider boundary"
+              : "task has no open run (already settled or closed)",
+          }
+        }
+      } else {
+        if (input.action !== "stop")
+          return yield* Effect.fail(
+            new FacadeActivityUnsupportedControl({
+              subkind: "panel",
+              action: input.action,
+              reason: "panel facade supports only stop (cancels the background consult job)",
+            }),
+          )
+        if (!background)
+          return yield* Effect.fail(
+            new FacadeActivityRunnerUnavailable({ subkind: "panel", reason: "background job service unavailable" }),
+          )
+        const cancelled = yield* background.cancel(row.activity_id)
+        outcome = {
+          applied: cancelled !== undefined,
+          subkind: "panel",
+          action: "stop",
+          detail: cancelled ? "panel consult job cancelled" : "no running panel job to cancel",
+        }
+      }
+
+      // Best-effort eager convergence so a stop that immediately settles the domain (queued task
+      // close, goal stop) also settles the facade row without waiting for the next read.
+      const current = yield* readFacadeRow(row.activity_id)
+      if (current) yield* converge(current)
+      return outcome
+    })
+
+    return Service.of({ start, status, result, control })
+  },
+)
+
+export const layer = Layer.effect(Service, build)
+
+export const defaultLayer = Layer.suspend(() =>
+  layer.pipe(Layer.provide(Database.defaultLayer), Layer.provide(RuntimeFlags.defaultLayer)),
+)
+
+export * as FacadeActivity from "./facade-activity"
diff --git a/packages/deepagent-code/src/session/goal-manager.ts b/packages/deepagent-code/src/session/goal-manager.ts
index 459ae120..db95b8ae 100644
--- a/packages/deepagent-code/src/session/goal-manager.ts
+++ b/packages/deepagent-code/src/session/goal-manager.ts
@@ -629,6 +629,7 @@ export const layer = Layer.effect(
         // (same shared index as the tool path + the first driver) so the resumed loop's plan reads/writes
         // stay coherent with any concurrent `plan` tool write on the same session.
         const store = DocumentStore.shared(goalStoreRoot(sessionID))
+        const session = yield* sessions.get(SessionID.make(sessionID)).pipe(Effect.orDie)
 
         // V4.1 §N DUAL-PATH resume. flag ON ⇒ RE-SEED the event chain rather than starting a BackgroundJob.
         // The paused command consumed the current normal cursor key without advancing state. Resume keeps
@@ -645,6 +646,10 @@ export const layer = Layer.effect(
                 planDocId: c.planDocId,
                 seq: tick?.seq ?? 0,
                 expectedPlanVersion,
+                // FEATURE-003-407 residual: re-stamp the real workspace id on resume too — the consumer
+                // chain carries it from the PAYLOAD, so without this the resumed chain (and its quiet-hours
+                // gate) would silently lose the workspace and degrade to the "" global fallback.
+                ...(session.workspaceID != null ? { workspaceID: String(session.workspaceID) } : {}),
               }),
             )
             .pipe(Effect.ignore)
@@ -652,7 +657,6 @@ export const layer = Layer.effect(
           return true
         }
 
-        const session = yield* sessions.get(SessionID.make(sessionID)).pipe(Effect.orDie)
         // Resume can't run without a model; if none resolves, don't crash — just report "not resumed".
         const modelOpt = yield* resolveGoalModel(session).pipe(Effect.option)
         if (Option.isNone(modelOpt)) return false
diff --git a/packages/deepagent-code/src/session/goal-tick-consumer.ts b/packages/deepagent-code/src/session/goal-tick-consumer.ts
index 85c48627..15429536 100644
--- a/packages/deepagent-code/src/session/goal-tick-consumer.ts
+++ b/packages/deepagent-code/src/session/goal-tick-consumer.ts
@@ -105,7 +105,13 @@ export const tickCommand = (request: {
 }): DeepAgentEvent.PublishInput => ({
   type: LMNEvents.GOAL_TICK_REQUESTED,
   source: "system",
-  workspaceID: request.sessionID,
+  // FEATURE-003-407 residual: the durable event row's workspace_id MUST be the REAL workspace id, not
+  // the sessionID. The bus's groupsFor routes workspace-bound consumer groups (workspace_id != "") by
+  // this column, so a sessionID here misroutes the event to zero tenants and poisons per-workspace
+  // queries. The real id travels in `request.workspaceID` (stamped by goal-manager from the session);
+  // when it is genuinely unavailable (legacy commands), fall back to "" — the bus's GLOBAL semantics
+  // (a "" row is owed only to global groups, same as any cross-workspace event).
+  workspaceID: request.workspaceID ?? "",
   actorID: request.sessionID,
   // §N: the command is the goal's own work — normal priority; it is NOT an approval-queue candidate.
   priority: "normal",
diff --git a/packages/deepagent-code/src/session/llm.ts b/packages/deepagent-code/src/session/llm.ts
index fca354dc..6cb60db8 100644
--- a/packages/deepagent-code/src/session/llm.ts
+++ b/packages/deepagent-code/src/session/llm.ts
@@ -821,6 +821,9 @@ const live: Layer.Layer<
           headers: prepared.headers,
           abort: input.abort,
           metadata: prepared.metadata,
+          // UPD-002: wire-level structured output travels through the native
+          // runtime only; the AI SDK runtime keeps the synthetic-tool path.
+          responseFormat: prepared.responseFormat,
           durableAttempt: input.durableAttempt,
           requestSeal: requestReceipt
             ? ({ wireHash }) =>
diff --git a/packages/deepagent-code/src/session/llm/native-request.ts b/packages/deepagent-code/src/session/llm/native-request.ts
index 74a2c532..f88cb4ec 100644
--- a/packages/deepagent-code/src/session/llm/native-request.ts
+++ b/packages/deepagent-code/src/session/llm/native-request.ts
@@ -9,6 +9,7 @@ import {
   OpenAICompatible,
   OpenRouter,
 } from "@deepagent-code/llm/providers/compat"
+import { byProvider as OpenAICompatibleProfiles } from "@deepagent-code/llm/providers/openai-compatible-profile"
 import type { ModelMessage } from "ai"
 import type { Provider } from "@/provider/provider"
 import { isRecord } from "@/util/record"
@@ -33,6 +34,9 @@ export type RequestInput = {
   readonly providerOptions?: LLMRequest["providerOptions"]
   readonly headers?: Record<string, string>
   readonly metadata?: LLMRequest["metadata"]
+  // UPD-002: wire-level structured output (json_schema text.format). Only set
+  // when the turn takes the wire path — see LLMRequestPrep.shouldUseWireStructuredOutput.
+  readonly responseFormat?: { readonly name: string; readonly schema: Record<string, unknown> }
 }
 
 const providerMetadata = (value: unknown): ProviderMetadata | undefined => {
@@ -169,12 +173,20 @@ export const model = (input: Provider.Model | RequestInput, headers?: Record<str
   if (model.api.npm === "@ai-sdk/anthropic") return Anthropic.configure(options).model(model.api.id)
   if (model.api.npm === "@ai-sdk/google") return Google.configure(options).model(model.api.id)
   if (model.api.npm === "@ai-sdk/amazon-bedrock") return AmazonBedrock.configure(options).model(model.api.id)
-  if (model.api.npm === "@ai-sdk/openai-compatible")
-    return OpenAICompatible.configure({
+  if (model.api.npm === "@ai-sdk/openai-compatible") {
+    const configured = OpenAICompatible.configure({
       ...options,
       provider: String(model.providerID),
       baseURL: requireBaseURL(model, url),
-    }).model(model.api.id)
+    })
+    // Capability detection lives on the compatible profile: families that
+    // also serve the Responses API (currently deepseek) branch to the
+    // Responses route; everyone else stays on the Chat route.
+    const compatibleModel = OpenAICompatibleProfiles[String(model.providerID)]?.supportsResponses
+      ? configured.responses
+      : configured.chat
+    return compatibleModel(model.api.id)
+  }
   if (model.api.npm === "@openrouter/ai-sdk-provider") return OpenRouter.configure(options).model(model.api.id)
   throw new Error(`Native LLM request adapter does not support provider package ${model.api.npm}`)
 }
@@ -192,6 +204,11 @@ export const request = (input: RequestInput) => {
     generation: generation(input),
     providerOptions: input.providerOptions,
     metadata: input.metadata,
+    // UPD-002: lower the prepared wire format onto the canonical request so
+    // the Responses protocol emits `text.format` and validates the output.
+    responseFormat: input.responseFormat
+      ? { type: "json", name: input.responseFormat.name, schema: input.responseFormat.schema as JsonSchema }
+      : undefined,
   })
 }
 
diff --git a/packages/deepagent-code/src/session/llm/native-runtime.ts b/packages/deepagent-code/src/session/llm/native-runtime.ts
index 8e5c1056..9d33980b 100644
--- a/packages/deepagent-code/src/session/llm/native-runtime.ts
+++ b/packages/deepagent-code/src/session/llm/native-runtime.ts
@@ -44,6 +44,8 @@ type StreamInput = {
   readonly headers: Record<string, string>
   readonly abort: AbortSignal
   readonly metadata?: Record<string, unknown>
+  // UPD-002: wire-level structured output forwarded from LLMRequestPrep.Prepared.
+  readonly responseFormat?: { readonly name: string; readonly schema: Record<string, unknown> }
   readonly durableAttempt?: boolean
   readonly requestSeal?: RequestExecutor.RequestSeal["seal"]
 }
@@ -61,9 +63,13 @@ function statusWithFetch(
     providerID !== "openai" &&
     providerID !== "anthropic" &&
     providerID !== "deepagent" &&
+    providerID !== "deepseek" &&
     !providerID.startsWith("deepagent-code")
   )
-    return { type: "unsupported", reason: "provider is not openai, deepagent-code, anthropic, or deepagent" }
+    return {
+      type: "unsupported",
+      reason: "provider is not openai, deepagent-code, anthropic, deepagent, or deepseek",
+    }
   const npm = input.model.api.npm
   if (npm !== "@ai-sdk/openai" && npm !== "@ai-sdk/openai-compatible" && npm !== "@ai-sdk/anthropic")
     return { type: "unsupported", reason: "provider package is not OpenAI, OpenAI-compatible, or Anthropic" }
@@ -116,6 +122,7 @@ export function stream(input: StreamInput): StreamResult {
     providerOptions: ProviderTransform.providerOptions(input.model, input.providerOptions ?? {}),
     headers: { ...providerHeaders(input.provider.options.headers), ...input.headers },
     metadata: input.metadata,
+    responseFormat: input.responseFormat,
   })
   const stream = Stream.scoped(
     Stream.unwrap(
diff --git a/packages/deepagent-code/src/session/llm/request.ts b/packages/deepagent-code/src/session/llm/request.ts
index 8bc76fb2..28692fa6 100644
--- a/packages/deepagent-code/src/session/llm/request.ts
+++ b/packages/deepagent-code/src/session/llm/request.ts
@@ -36,9 +36,78 @@ type McpServerRef = AgentGateway.McpServerRef
 import { jsonSchema, tool as aiTool, type ModelMessage, type Tool } from "ai"
 import type { Plugin } from "@/plugin"
 import { mergeDeep } from "remeda"
+import { byProvider as OpenAICompatibleProfiles } from "@deepagent-code/llm/providers/openai-compatible-profile"
 
 const USER_AGENT = `deepagent-code/${InstallationVersion}`
 
+// =============================================================================
+// UPD-002: wire-level structured output capability detection
+// =============================================================================
+// Two INDEPENDENT capability facts (hard constraint: never assume Responses ⇒
+// wire structured output):
+//
+// 1. "Responses family" — does the model speak the OpenAI Responses API?
+//    Declared by the compatible profile (`supportsResponses`, e.g. deepseek)
+//    or by the npm package that only serves Responses (openai/azure).
+// 2. "wire structured text format" — does the route actually honor
+//    `text.format` json_schema? This is deliberately narrower than the family:
+//    a Responses-capable provider may still lack constrained text output.
+//
+// CANONICAL capability declaration (UPD-002 residual): openai-compatible
+// families declare it on their profile (`supportsStructuredTextFormat`,
+// openai-compatible-profile.ts) — never assumed from Responses support. The
+// dedicated OpenAI/Azure packages are the reference Responses implementations
+// the wire lowering targets, so they are inherently format-capable. No
+// compatible family advertises it today (deepseek serves Responses but NOT
+// constrained `text.format`), so opting one in is a one-line profile flag,
+// not a code change here.
+const responsesFamily = (model: Provider.Model): boolean =>
+  model.api.npm === "@ai-sdk/openai" ||
+  model.api.npm === "@ai-sdk/azure" ||
+  (model.api.npm === "@ai-sdk/openai-compatible" &&
+    OpenAICompatibleProfiles[String(model.providerID)]?.supportsResponses === true)
+
+const supportsStructuredTextFormat = (model: Provider.Model): boolean => {
+  if (model.api.npm === "@ai-sdk/openai" || model.api.npm === "@ai-sdk/azure") return true
+  if (model.api.npm === "@ai-sdk/openai-compatible")
+    return OpenAICompatibleProfiles[String(model.providerID)]?.supportsStructuredTextFormat === true
+  return false
+}
+
+/**
+ * UPD-002: decide whether this turn delivers json_schema output through the
+ * wire (`text.format`) instead of the synthesized StructuredOutput tool.
+ *
+ * Requirements for wire mode — ALL must hold:
+ * - the user requested json_schema output
+ * - the turn is NOT a structured finalizer (finalizers keep the bounded
+ *   synthetic-tool semantics: FINALIZER_ATTEMPTS / retryCount / allow_text)
+ * - the native runtime will actually carry the request (wire lowering lives
+ *   in @deepagent-code/llm's Responses protocol; the AI SDK runtime has no
+ *   delivery path yet)
+ * - the model is a Responses family AND independently format-capable
+ *
+ * prompt.ts and prepare() must agree on this decision (prompt.ts decides
+ * whether to inject the synthetic tool; prepare() decides whether to lower
+ * `responseFormat`), so both call this single helper.
+ */
+export function shouldUseWireStructuredOutput(input: {
+  readonly user: SessionV1.User
+  readonly model: Provider.Model
+  readonly flags: RuntimeFlags.Info
+}): boolean {
+  if (input.user.format?.type !== "json_schema") return false
+  if (isStructuredFinalizerMetadata(input.user.metadata)) return false
+  if (!input.flags.experimentalNativeLlm) return false
+  return responsesFamily(input.model) && supportsStructuredTextFormat(input.model)
+}
+
+function isStructuredFinalizerMetadata(metadata: unknown): boolean {
+  if (!isRecord(metadata)) return false
+  if (!isRecord(metadata.deepagent)) return false
+  return isRecord(metadata.deepagent.structured_finalizer)
+}
+
 type PrepareInput = {
   readonly user: SessionV1.User
   readonly sessionID: string
@@ -83,6 +152,10 @@ export type Prepared = {
   readonly messageTransformOptions: Record<string, any>
   readonly headers: Record<string, string>
   readonly releasedKnowledgeSelectedRefs: readonly DocumentRef[]
+  // UPD-002: wire-level structured output. Set only when the turn takes the
+  // wire path (see shouldUseWireStructuredOutput); the native runtime lowers
+  // it onto LLMRequest.responseFormat → Responses `text.format`.
+  readonly responseFormat?: { readonly name: string; readonly schema: Record<string, unknown> }
 }
 
 const mergeOptions = (target: Record<string, any>, source: Record<string, any> | undefined): Record<string, any> =>
@@ -325,7 +398,11 @@ export const prepare = Effect.fn("LLMRequestPrep.prepare")(function* (input: Pre
   }
 
   const instance = yield* InstanceState.context
-  const metadata = prepareMetadata(input, tools, instance.directory)
+  // UPD-002: wire structured-output decision. Must match prompt.ts's decision
+  // (single helper): wire ⇒ no synthesized StructuredOutput tool, and the
+  // format travels here instead; synthetic ⇒ responseFormat stays unset.
+  const wireStructuredOutput = shouldUseWireStructuredOutput(input)
+  const metadata = prepareMetadata(input, tools, instance.directory, wireStructuredOutput)
 
   const deepagentCodeProjectID = input.model.providerID.startsWith("deepagent-code") ? instance.project.id : undefined
 
@@ -357,6 +434,9 @@ export const prepare = Effect.fn("LLMRequestPrep.prepare")(function* (input: Pre
       ...headers,
     },
     releasedKnowledgeSelectedRefs,
+    ...(wireStructuredOutput && input.user.format?.type === "json_schema"
+      ? { responseFormat: { name: "structured_output", schema: input.user.format.schema } }
+      : {}),
   } satisfies Prepared
   if (input.flags.assembledRequestFingerprint)
     emitAssembledRequestFingerprint(input, prepared, validationCommands, volatileContextKind)
@@ -444,6 +524,7 @@ const prepareMetadata = (
   input: PrepareInput,
   tools: Record<string, Tool>,
   workspacePath: string,
+  wireStructuredOutput: boolean,
 ): Record<string, unknown> => {
   const agentMode = deepAgentAgentModeOverride(input.user.metadata)
   const deepagent =
@@ -459,6 +540,11 @@ const prepareMetadata = (
       parentSessionID: input.parentSessionID,
       agent: input.agent.name,
       workspacePath,
+      // UPD-002 receipt: record which structured-output delivery mode this
+      // request uses (wire text.format vs synthesized StructuredOutput tool).
+      ...(input.user.format?.type === "json_schema"
+        ? { structured_output_mode: wireStructuredOutput ? "wire_format" : "synthetic_tool" }
+        : {}),
     },
     deepagent: {
       ...(typeof deepagent.goal_id === "string" ? { goal_id: deepagent.goal_id } : {}),
diff --git a/packages/deepagent-code/src/session/llm/tool-pairing.ts b/packages/deepagent-code/src/session/llm/tool-pairing.ts
new file mode 100644
index 00000000..ce1a1d0b
--- /dev/null
+++ b/packages/deepagent-code/src/session/llm/tool-pairing.ts
@@ -0,0 +1,157 @@
+import type { ModelMessage } from "ai"
+
+/**
+ * Wire text used when synthesizing a tool result for a tool call that never
+ * got one. Mirrors the interrupted-tool synthesis in message-v2.ts
+ * ("[Tool execution was interrupted]") so the model sees one consistent style.
+ */
+export const INTERRUPTED_TOOL_ERROR_TEXT = "[Tool execution was interrupted]"
+
+export interface RepairReport {
+  /** call_ids that had no result → a synthetic error result was inserted. */
+  readonly synthesizedResults: string[]
+  /** call_ids of orphan results (no preceding call) that were stripped. */
+  readonly strippedOrphanResults: string[]
+  /** call_ids dropped as duplicates (a repeated call or a repeated result; first wins). */
+  readonly droppedDuplicates: string[]
+  /** Number of tool→user gaps bridged with a synthetic assistant turn. */
+  bridgedToolUserGaps: number
+}
+
+export const emptyRepairReport = (): RepairReport => ({
+  synthesizedResults: [],
+  strippedOrphanResults: [],
+  droppedDuplicates: [],
+  bridgedToolUserGaps: 0,
+})
+
+export const repairReportIsEmpty = (report: RepairReport): boolean =>
+  report.synthesizedResults.length === 0 &&
+  report.strippedOrphanResults.length === 0 &&
+  report.droppedDuplicates.length === 0 &&
+  report.bridgedToolUserGaps === 0
+
+export interface RepairOptions {
+  /**
+   * After repair, if a tool message ends up directly followed by a user
+   * message, insert a synthetic assistant "Done." between them. This mirrors
+   * the tool→user sequence fix applied by the mistral scrub in
+   * transform.normalizeMessages, which runs BEFORE this repairer and cannot
+   * see the synthetic tool messages this repairer inserts.
+   */
+  bridgeToolUserGap?: boolean
+  /**
+   * UPD-001 telemetry: optional caller-provided collector populated in place
+   * with exactly what the repairer changed. The receipt's `call_ids` records
+   * the PRE-repair projection, so a repaired wire body diverges from it; this
+   * report is what makes that divergence explainable (which call_ids were
+   * synthesized / stripped / deduped). Omitted → no collection (pure repair).
+   */
+  report?: RepairReport
+}
+
+/**
+ * Repair tool_use/tool_result pairing so providers never receive:
+ *
+ * 1. an assistant tool-call with no matching tool-result → a synthetic error
+ *    result is inserted directly after the message carrying the call
+ * 2. an orphan tool-result whose callID never appeared as a call → stripped
+ * 3. duplicate callIDs → only the first call and first result survive
+ *
+ * Constraints:
+ * - Pure function: no logging, no I/O, no receipt-semantics changes; input
+ *   messages are never mutated (callers may log around it if needed).
+ * - MUST run after transform.ts normalizeMessages: the mistral toolCallId
+ *   scrub truncates IDs to 9 alphanumeric chars and can collide distinct IDs
+ *   into duplicates that only exist post-scrub, so dedup has to come last.
+ */
+export function repairToolPairing(msgs: ModelMessage[], options: RepairOptions = {}): ModelMessage[] {
+  const report = options.report
+  const seenCallIDs = new Set<string>()
+  const seenResultIDs = new Set<string>()
+  // Surviving, not-yet-matched calls: callID -> { toolName, index of message holding the call }
+  const unmatched = new Map<string, { toolName: string; messageIndex: number }>()
+
+  // Pass 1: decide which parts survive (dedup + orphan stripping) without
+  // emitting anything. A result can legally appear several messages after
+  // its call, so missing-result synthesis can only be decided after the full
+  // scan.
+  const planned = msgs.map((msg, messageIndex) => {
+    if (!Array.isArray(msg.content)) return { msg, content: undefined, changed: false }
+    let changed = false
+    const content = msg.content.filter((part) => {
+      if (part.type === "tool-call") {
+        if (seenCallIDs.has(part.toolCallId)) {
+          changed = true
+          report?.droppedDuplicates.push(part.toolCallId)
+          return false // duplicate callID: keep the first
+        }
+        seenCallIDs.add(part.toolCallId)
+        unmatched.set(part.toolCallId, { toolName: part.toolName, messageIndex })
+        return true
+      }
+      if (part.type === "tool-result") {
+        if (!seenCallIDs.has(part.toolCallId)) {
+          changed = true
+          report?.strippedOrphanResults.push(part.toolCallId)
+          return false // orphan result: no preceding call
+        }
+        if (seenResultIDs.has(part.toolCallId)) {
+          changed = true
+          report?.droppedDuplicates.push(part.toolCallId)
+          return false // duplicate result for one call: keep the first
+        }
+        seenResultIDs.add(part.toolCallId)
+        unmatched.delete(part.toolCallId)
+        return true
+      }
+      return true
+    })
+    return { msg, content, changed }
+  })
+
+  // Pass 2: rebuild, inserting synthetic results directly after the message
+  // carrying the call so the assistant tool_use is always immediately
+  // followed by its result.
+  const output: ModelMessage[] = []
+  planned.forEach(({ msg, content, changed }, messageIndex) => {
+    if (content === undefined) {
+      output.push(msg)
+      return
+    }
+    // If every part was stripped (orphans/duplicates only), drop the message
+    // entirely — an empty content array is rejected by providers. Unmatched
+    // calls cannot live here: a surviving call always survives the filter.
+    if (content.length === 0) return
+    output.push(changed ? ({ ...msg, content } as ModelMessage) : msg)
+
+    const missing = [...unmatched.entries()].filter(([, info]) => info.messageIndex === messageIndex)
+    if (missing.length === 0) return
+    if (report) for (const [toolCallId] of missing) report.synthesizedResults.push(toolCallId)
+    output.push({
+      role: "tool",
+      content: missing.map(([toolCallId, info]) => ({
+        type: "tool-result" as const,
+        toolCallId,
+        toolName: info.toolName,
+        output: { type: "error-text" as const, value: INTERRUPTED_TOOL_ERROR_TEXT },
+      })),
+    })
+  })
+
+  if (!options.bridgeToolUserGap) return output
+
+  // normalizeMessages already bridged every pre-existing tool→user gap for
+  // mistral, so any gap left here was introduced by this repairer.
+  const bridged: ModelMessage[] = []
+  for (let i = 0; i < output.length; i++) {
+    bridged.push(output[i])
+    if (output[i].role === "tool" && output[i + 1]?.role === "user") {
+      bridged.push({ role: "assistant", content: [{ type: "text", text: "Done." }] })
+      if (report) report.bridgedToolUserGaps += 1
+    }
+  }
+  return bridged
+}
+
+export * as ToolPairing from "./tool-pairing"
diff --git a/packages/deepagent-code/src/session/processor.ts b/packages/deepagent-code/src/session/processor.ts
index 2236a38f..6d197dca 100644
--- a/packages/deepagent-code/src/session/processor.ts
+++ b/packages/deepagent-code/src/session/processor.ts
@@ -487,6 +487,9 @@ export type ProcessorDecision =
 
 export interface Handle {
   readonly message: SessionV1.Assistant
+  // BUG-407-012 gap C: outcome of the pre-stream snapshot capture, so the turn
+  // boundary layer can persist `snapshot_finished` / `snapshot_degraded` evidence.
+  readonly snapshotOutcome: Snapshot.TrackOutcome
   readonly updateToolCall: (
     toolCallID: string,
     update: (part: SessionV1.ToolPart) => SessionV1.ToolPart,
@@ -534,6 +537,11 @@ type Input = {
    */
   sequenceTracker?: ToolSequenceTracker
   planTracker?: PlanProtocolTracker
+  /**
+   * BUG-407-012 gap C: legacy activity identity for snapshot budget attribution.
+   * Absent when the caller has no activity binding (legacy paths).
+   */
+  activityID?: string
   loopPolicy?: "ask" | "error"
   noProgressLimit?: number
 }
@@ -601,7 +609,11 @@ export const layer = Layer.effect(
       // Pre-capture snapshot before the LLM stream starts. The AI SDK
       // may execute tools internally before emitting start-step events,
       // so capturing inside the event handler can be too late.
-      const initialSnapshot = yield* snapshot.track()
+      const snapshotOutcome = yield* snapshot.trackOutcome({
+        sessionId: input.sessionID,
+        ...(input.activityID ? { activityId: input.activityID } : {}),
+      })
+      const initialSnapshot = snapshotOutcome.hash
       const ctx: ProcessorContext = {
         assistantMessage: input.assistantMessage,
         sessionID: input.sessionID,
@@ -680,7 +692,6 @@ export const layer = Layer.effect(
 
       const observeDurableTurn = Effect.fn("SessionProcessor.observeDurableTurn")(function* () {
         if (
-          flags.activityAuthority !== "durable" ||
           ctx.loopPolicy !== "ask" ||
           ctx.assistantMessage.summary ||
           ctx.activityToolNames.size === 0
@@ -689,10 +700,17 @@ export const layer = Layer.effect(
         const activity = yield* SessionPromptIntent.activeActivityForSession(ctx.sessionID).pipe(
           Effect.provideService(Database.Service, database),
         )
-        if (!activity)
-          return yield* Effect.die(
-            new Error(`durable activity authority has no active legacy activity: ${ctx.sessionID}`),
-          )
+        if (!activity) {
+          // The durable authority governs ADMITTED legacy activities. A turn driven without an
+          // admitted activity (direct legacy loop entry, recovery edge windows, seeded history)
+          // keeps legacy semantics: policy evaluation still applies, but there is no durable
+          // objective/progress/no-progress governance to observe. Skipping here must not defect —
+          // dying would crash every un-admitted turn the moment any tool settles.
+          slog.warn("durable observation skipped: no active legacy activity for session", {
+            activityToolCount: ctx.activityToolNames.size,
+          })
+          return
+        }
         const current = yield* DeepAgentActivityAuthority.reconstruct({
           activityKind: "legacy",
           activityID: activity.activityID,
@@ -939,7 +957,7 @@ export const layer = Layer.effect(
             attachments: output.attachments,
           },
         })
-        if (flags.activityAuthority === "durable" && ctx.loopPolicy === "ask") {
+        if (ctx.loopPolicy === "ask") {
           const workspaceRevision = yield* snapshot.track()
           const resultFingerprint =
             match.part.tool && ctx.sequenceTracker
@@ -1033,7 +1051,7 @@ export const layer = Layer.effect(
             time: { start: match.part.state.time.start, end: Date.now() },
           },
         })
-        if (flags.activityAuthority === "durable" && ctx.loopPolicy === "ask") {
+        if (ctx.loopPolicy === "ask") {
           const workspaceRevision = yield* snapshot.track()
           const message = errorMessage(error)
           const evidenceFingerprint = Hash.sha256(
@@ -1436,24 +1454,6 @@ export const layer = Layer.effect(
                     }),
                   )
                 }
-                if (flags.activityAuthority === "durable") {
-                  ctx.sequenceTracker.setTriggered(detected.sequenceKey)
-                  return
-                }
-                const agent = yield* agents.get(ctx.assistantMessage.agent)
-                yield* permission.ask({
-                  permission: "doom_loop",
-                  patterns: [value.name],
-                  sessionID: ctx.assistantMessage.sessionID,
-                  metadata: {
-                    tool: value.name,
-                    input,
-                    period: detected.period,
-                    count: detected.count,
-                  },
-                  always: [value.name],
-                  ruleset: agent.permission,
-                })
                 ctx.sequenceTracker.setTriggered(detected.sequenceKey)
               }
               // Tracker handles all detection for this call; skip legacy path.
@@ -1498,18 +1498,8 @@ export const layer = Layer.effect(
                 }),
               )
             }
-
-            if (flags.activityAuthority === "durable") return
-
-            const agent = yield* agents.get(ctx.assistantMessage.agent)
-            yield* permission.ask({
-              permission: "doom_loop",
-              patterns: [value.name],
-              sessionID: ctx.assistantMessage.sessionID,
-              metadata: { tool: value.name, input },
-              always: [value.name],
-              ruleset: agent.permission,
-            })
+            // Interactive policies surface the doom loop through the durable no-progress authority
+            // (recorded on the activity), not through a permission prompt.
             return
           }
 
@@ -2223,6 +2213,7 @@ export const layer = Layer.effect(
         get message() {
           return ctx.assistantMessage
         },
+        snapshotOutcome,
         updateToolCall,
         completeToolCall,
         process,
diff --git a/packages/deepagent-code/src/session/prompt-intent.ts b/packages/deepagent-code/src/session/prompt-intent.ts
index 17222ddf..61f9a1d3 100644
--- a/packages/deepagent-code/src/session/prompt-intent.ts
+++ b/packages/deepagent-code/src/session/prompt-intent.ts
@@ -21,7 +21,10 @@ import {
   SessionLegacyActivityTable,
   SessionLegacyActivityTerminalTable,
 } from "./activity-sql"
-import { SessionActivityObjectiveTable } from "@deepagent-code/core/deepagent/activity-authority.sql"
+import {
+  SessionActivityObjectiveTable,
+  SessionActivityPermissionEffectDispatchTable,
+} from "@deepagent-code/core/deepagent/activity-authority.sql"
 import { SessionToolRequestReceiptTable } from "./tool-request-receipt.sql"
 import { SessionActivityOwner } from "./activity-owner"
 import { pause as pauseAtActivityCrashPoint } from "./activity-crash-test"
@@ -56,7 +59,15 @@ export type Receipt = {
   readonly intentID: string
   readonly sessionID: SessionID
   readonly source: Source
-  readonly state: "preparing" | "admitting" | "admitted" | "canceled" | "superseded" | "failed"
+  readonly state:
+    | "preparing"
+    | "awaiting_confirmation"
+    | "selected"
+    | "admitting"
+    | "admitted"
+    | "canceled"
+    | "superseded"
+    | "failed"
   readonly variant?: Variant
   readonly payloadHash?: string
   readonly delivery?: Delivery
@@ -729,6 +740,7 @@ export const materializeTurn = Effect.fn("SessionPromptIntent.materializeTurn")(
               .get()
               .pipe(Effect.orDie))?.generation ?? -1) + 1
           const runOwnerToken = input.run?.ownerToken ?? SessionActivityOwner.processOwnerToken
+          let steerAdmissionID: string | undefined
           if (!existingActivity) {
             const active = yield* tx
               .select()
@@ -741,13 +753,89 @@ export const materializeTurn = Effect.fn("SessionPromptIntent.materializeTurn")(
               )
               .get()
               .pipe(Effect.orDie)
-            if (active)
-              return yield* Effect.fail(
-                new Conflict({
-                  intentID: input.receipt.intentID,
-                  reason: `legacy activity ${active.activity_id} requires recovery before a new turn`,
-                }),
-              )
+            if (active) {
+              // BUG-008 third leak window — admission adoption (route a).
+              //
+              // A turn that dies AFTER the session went busy but BEFORE its own
+              // materialization transaction commits leaves nothing behind; yet a
+              // steer admitted inside that window sees no active activity and
+              // creates a PLACEHOLDER activity (trigger = the steer admission,
+              // intent run_now/pending, zero run rows). The dead turn's outer
+              // hooks own no run, and recoverActiveActivities deliberately skips
+              // the run_now/pending/no-run shape, so the placeholder would block
+              // every later admission with "requires recovery before a new turn".
+              //
+              // The task's original adoption condition (active activity triggered
+              // by the SAME intent messageID) is unreachable: materialization is a
+              // single atomic transaction, so a same-intent retry can never
+              // observe its own half-written activity. The actually-observed leak
+              // (live steer-boundary suite) is the steer placeholder above, so
+              // adoption is generalized to it. In-place reuse of the placeholder
+              // row is forbidden by the state machine (trigger_admission_id is
+              // immutable and session_legacy_activity_admission rejects UPDATEs),
+              // so adoption takes the undo-and-reattach form below. Route b
+              // (terminalize at the creation point) was rejected: the placeholder
+              // is created by steer.admit, which cannot know a concurrent turn
+              // will materialize; destroying it there would drop legal steers.
+              const placeholderAdmission = yield* tx
+                .select()
+                .from(SessionActivityAdmissionTable)
+                .where(eq(SessionActivityAdmissionTable.admission_id, active.trigger_admission_id))
+                .get()
+                .pipe(Effect.orDie)
+              const placeholderIntent = placeholderAdmission?.legacy_intent_id
+                ? yield* tx
+                    .select()
+                    .from(SessionIntentTable)
+                    .where(eq(SessionIntentTable.intent_id, placeholderAdmission.legacy_intent_id))
+                    .get()
+                    .pipe(Effect.orDie)
+                : undefined
+              const placeholderRun = yield* tx
+                .select({ runID: SessionLegacyActivityRunTable.run_id })
+                .from(SessionLegacyActivityRunTable)
+                .where(eq(SessionLegacyActivityRunTable.activity_id, active.activity_id))
+                .get()
+                .pipe(Effect.orDie)
+              const adoptable =
+                placeholderAdmission?.delivery === "steer" &&
+                placeholderIntent !== undefined &&
+                placeholderIntent.execution_state === "pending" &&
+                placeholderIntent.execution_claim_id === null &&
+                placeholderIntent.mutation_epoch === session.mutationEpoch &&
+                placeholderRun === undefined
+              if (!adoptable)
+                return yield* Effect.fail(
+                  new Conflict({
+                    intentID: input.receipt.intentID,
+                    reason: `legacy activity ${active.activity_id} requires recovery before a new turn`,
+                  }),
+                )
+              // The placeholder is a zero-footprint reservation: no run, no
+              // progress, no terminal, never claimed. Undo it (delete the
+              // membership row, then the activity row — both have no DELETE
+              // triggers and no surviving references) and re-attach the steer
+              // admission to this turn's activity below, which converges on
+              // EXACTLY the durable state the healthy race ordering produces
+              // (turn materializes first, steer attaches as role "steer"), so
+              // drain/freeze/cancel/progress semantics downstream are unchanged.
+              yield* tx
+                .delete(SessionLegacyActivityAdmissionTable)
+                .where(eq(SessionLegacyActivityAdmissionTable.activity_id, active.activity_id))
+                .run()
+                .pipe(Effect.orDie)
+              yield* tx
+                .delete(SessionLegacyActivityTable)
+                .where(
+                  and(
+                    eq(SessionLegacyActivityTable.activity_id, active.activity_id),
+                    eq(SessionLegacyActivityTable.state, "active"),
+                  ),
+                )
+                .run()
+                .pipe(Effect.orDie)
+              steerAdmissionID = active.trigger_admission_id
+            }
             const latest = yield* tx
               .select({ ordinal: max(SessionLegacyActivityTable.ordinal) })
               .from(SessionLegacyActivityTable)
@@ -792,6 +880,29 @@ export const materializeTurn = Effect.fn("SessionPromptIntent.materializeTurn")(
             return yield* Effect.fail(
               new Conflict({ intentID: input.receipt.intentID, reason: "activity trigger membership conflicts" }),
             )
+          if (steerAdmissionID) {
+            // BUG-008 third window adoption, final step: re-attach the orphaned
+            // steer admission as role "steer" on the adopting activity. The
+            // steer's intent stays run_now/pending and is claimed by this turn's
+            // run at drain time, exactly as in the healthy race ordering.
+            const latestMembership = yield* tx
+              .select({ ordinal: max(SessionLegacyActivityAdmissionTable.ordinal) })
+              .from(SessionLegacyActivityAdmissionTable)
+              .where(eq(SessionLegacyActivityAdmissionTable.activity_id, activityID))
+              .get()
+              .pipe(Effect.orDie)
+            yield* tx
+              .insert(SessionLegacyActivityAdmissionTable)
+              .values({
+                activity_id: activityID,
+                admission_id: steerAdmissionID,
+                ordinal: (latestMembership?.ordinal ?? 0) + 1,
+                role: "steer",
+                attached_at: now,
+              })
+              .run()
+              .pipe(Effect.orDie)
+          }
           const claimed = yield* tx
             .update(SessionIntentTable)
             .set({ execution_state: "claimed", execution_claim_id: runID, execution_claimed_at: now })
@@ -1732,6 +1843,43 @@ export const settleProgressOnly = Effect.fn("SessionPromptIntent.settleProgressO
     .pipe(Effect.orDie)
 })
 
+// The durable terminal guard (session_legacy_activity_permission_effect_terminal_guard) refuses to
+// move a legacy activity to a terminal state while one of its permission effect dispatches is still
+// `started` (and to `settled`/`interrupted` while one is `unknown`). On a host interrupt the
+// in-flight tool is concurrently finishing and settles its effect imminently; a caller that settles
+// the activity straight away races that settlement and dies on the guard. Wait for any `started`
+// effect to leave `started` before the caller picks the terminal state, reporting whether an
+// `unknown` (quarantined) effect remains so the caller can route to `recovery_required`.
+const PERMISSION_EFFECT_TERMINAL_WAIT_MS = 8_000
+export const awaitTerminalPermissionEffects = Effect.fn("SessionPromptIntent.awaitTerminalPermissionEffects")(
+  function* (input: { readonly activityID: string }) {
+    const { db } = yield* Database.Service
+    const deadline = Date.now() + PERMISSION_EFFECT_TERMINAL_WAIT_MS
+    while (true) {
+      const outstanding = yield* db
+        .select({ state: SessionActivityPermissionEffectDispatchTable.state })
+        .from(SessionActivityPermissionEffectDispatchTable)
+        .where(
+          and(
+            eq(SessionActivityPermissionEffectDispatchTable.activity_kind, "legacy"),
+            eq(SessionActivityPermissionEffectDispatchTable.activity_id, input.activityID),
+            inArray(SessionActivityPermissionEffectDispatchTable.state, ["started", "unknown"] as const),
+          ),
+        )
+        .all()
+        .pipe(Effect.orDie)
+      const started = outstanding.some((row) => row.state === "started")
+      if (!started) return { unresolvedUnknown: outstanding.length > 0, startedTimedOut: false }
+      if (Date.now() >= deadline)
+        return {
+          unresolvedUnknown: outstanding.some((row) => row.state === "unknown"),
+          startedTimedOut: true,
+        }
+      yield* Effect.sleep("25 millis")
+    }
+  },
+)
+
 export const finalizeActivityWithRevision = Effect.fn("SessionPromptIntent.finalizeActivityWithRevision")(
   function* (input: {
     readonly run: RunIdentity
diff --git a/packages/deepagent-code/src/session/prompt.ts b/packages/deepagent-code/src/session/prompt.ts
index 4d47c277..168ee6e6 100644
--- a/packages/deepagent-code/src/session/prompt.ts
+++ b/packages/deepagent-code/src/session/prompt.ts
@@ -47,6 +47,8 @@ import { SessionSummary } from "./summary"
 import { Snapshot } from "@/snapshot"
 import { NamedError } from "@deepagent-code/core/util/error"
 import { SessionProcessor } from "./processor"
+import { TurnStageEvidence } from "./turn-stage-evidence"
+import { TurnDeadlineWatchdog } from "./turn-deadline-watchdog"
 import { Tool } from "@/tool/tool"
 import { ToolInternal } from "@/tool/internal"
 import { Permission } from "@/permission"
@@ -85,6 +87,7 @@ import {
   Types,
 } from "effect"
 import * as EffectLogger from "@deepagent-code/core/effect/logger"
+import { KeyedMutex } from "@deepagent-code/core/effect/keyed-mutex"
 import { InstanceState } from "@/effect/instance-state"
 import {
   projectDurableSettledRun,
@@ -95,6 +98,7 @@ import {
   TaskTool,
   type TaskPromptOps,
 } from "@/tool/task"
+import { validateStructuredOutput } from "@/tool/task-structured-output"
 import { SessionRunState } from "./run-state"
 import { SessionSteer } from "./steer"
 import { SessionPromptIntent } from "./prompt-intent"
@@ -129,6 +133,7 @@ import {
 import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
 import { SessionProviderAttempt } from "@deepagent-code/core/context-federation/provider-attempt"
 import { ContextFederationExecutionParity } from "@deepagent-code/core/context-federation/execution-parity"
+import { ContextReconciliation } from "@deepagent-code/core/context-federation/reconciliation"
 import { Hash } from "@deepagent-code/core/util/hash"
 import { SessionFederatedContext } from "@/context-federation/session-context-runtime"
 import { ContextFederationReadiness } from "@/context-federation/readiness"
@@ -149,7 +154,7 @@ import {
 } from "@deepagent-code/core/session/prompt"
 import { Reference } from "@/reference/reference"
 import * as DateTime from "effect/DateTime"
-import { and, eq, exists, gt, inArray, isNull, max, notExists, notInArray, or } from "drizzle-orm"
+import { and, desc, eq, exists, gt, inArray, isNull, max, notExists, notInArray, or } from "drizzle-orm"
 import {
   SessionHistoryStateTable,
   SessionTable,
@@ -800,11 +805,17 @@ function buildStructuredOutputRuntimeTail(
   format: SessionV1.OutputFormat,
   finalizerMode: boolean,
   finalizerAllowsText = false,
+  wireFormat = false,
 ): string {
   if (finalizerAllowsText) {
     return "This is a bounded finalizer turn. Read the supplied research result and return exactly one JSON value. No research, Markdown, explanatory prose, or tool use is permitted."
   }
   if (format.type !== "json_schema") return ""
+  // UPD-002: wire mode — the provider enforces the schema via text.format, so
+  // the tail must NOT reference the (absent) StructuredOutput tool.
+  if (wireFormat) {
+    return "IMPORTANT: The user has requested structured output. Your final response text is schema-constrained by the provider. Reply with ONLY a single JSON value matching the required schema - no Markdown fences, prose, or wrapping."
+  }
   return [
     buildStructuredOutputSystemPrompt(format.schema),
     finalizerMode
@@ -1189,25 +1200,46 @@ export const layer = Layer.effect(
       yield* Effect.forEach(activities, publishActivityProjection, { discard: true })
     })
     const providerOwner = yield* SessionProviderOwner.Service
-    const providerOwnerToken = `${process.pid}:${randomUUID()}`
+    // BUG-407-012 root cause A: the process owner token is mutable. Sleeping past LeaseMs fences
+    // the startup token (correct fencing), and the maintenance loop below rotates to a successor
+    // generation instead of latching unhealthy forever. Every consumer must read the current token
+    // from `providerOwnerState` at use time — never capture a startup-time token constant.
+    const providerOwnerBase = `${process.pid}:${randomUUID()}`
+    const providerOwnerInitialToken = ContextFederationProviderOwnerRuntime.nextOwnerToken({
+      ownerBase: providerOwnerBase,
+      generation: 0,
+    })
     yield* providerOwner
       .register({
-        ownerToken: providerOwnerToken,
+        ownerToken: providerOwnerInitialToken,
         leaseMs: SessionProviderOwner.LeaseMs,
       })
       .pipe(Effect.orDie)
+    const providerOwnerState = yield* Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({
+      ownerToken: providerOwnerInitialToken,
+      generation: 0,
+    })
     const providerOwnerHealthy = yield* Ref.make(true)
-    yield* Effect.addFinalizer(() => providerOwner.release({ ownerToken: providerOwnerToken }).pipe(Effect.ignore))
-    yield* recoverProviderReceiptsOnStartup({ ownerToken: providerOwnerToken })
+    yield* Effect.addFinalizer(() =>
+      Ref.get(providerOwnerState).pipe(
+        Effect.flatMap((state) => providerOwner.release({ ownerToken: state.ownerToken })),
+        Effect.ignore,
+      ),
+    )
+    yield* recoverProviderReceiptsOnStartup({ ownerToken: providerOwnerInitialToken })
     yield* Effect.gen(function* () {
       while (yield* Ref.get(providerOwnerHealthy)) {
         const continued = yield* ContextFederationProviderOwnerRuntime.tick({
           owners: providerOwner,
-          ownerToken: providerOwnerToken,
+          owner: providerOwnerState,
+          ownerBase: providerOwnerBase,
           leaseMs: SessionProviderOwner.LeaseMs,
           healthy: providerOwnerHealthy,
           label: "provider",
-          recover: recoverProviderReceiptsOnStartup({ ownerToken: providerOwnerToken }),
+          recover: Effect.gen(function* () {
+            const current = yield* Ref.get(providerOwnerState)
+            yield* recoverProviderReceiptsOnStartup({ ownerToken: current.ownerToken })
+          }),
         })
         if (!continued) return
         yield* Effect.sleep(Duration.millis(SessionProviderOwner.LeaseMs / 3))
@@ -1216,6 +1248,35 @@ export const layer = Layer.effect(
       Effect.catchCause((cause) => Effect.logError(`provider owner maintenance failed: ${Cause.pretty(cause)}`)),
       Effect.forkScoped,
     )
+    // BUG-407-012 gap C (§8.3-3/4 conservative): optional watchdog that fails activities
+    // stuck before provider dispatch once the total deadline elapses without durable
+    // receipt/dispatch evidence. DEFAULT OFF; forked only when the flag is enabled. The
+    // sweep never throws (per-activity errors degrade to skipped outcomes) and reuses the
+    // existing terminalization path — no new recovery states.
+    if (flags.providerPreDispatchWatchdog)
+      yield* Effect.gen(function* () {
+        while (true) {
+          const outcomes = yield* TurnDeadlineWatchdog.sweep({
+            database,
+            deadlineMs: flags.providerPreDispatchDeadlineMs,
+          })
+          for (const outcome of outcomes)
+            if (outcome.kind === "failed")
+              yield* Effect.logWarning(
+                `pre-dispatch deadline watchdog failed stale activity ${outcome.activityID} (run ${outcome.runID})`,
+              )
+          yield* Effect.sleep(Duration.seconds(30))
+        }
+      }).pipe(
+        Effect.catchCause((cause) =>
+          Effect.logError(`pre-dispatch deadline watchdog failed: ${Cause.pretty(cause)}`),
+        ),
+        Effect.forkScoped,
+      )
+    // BUG-407-012 root cause A: a fenced lease no longer reaches this gate — rotation happens on
+    // the maintenance tick (LeaseMs/3 cadence, well inside one lease), so the successor token is
+    // live before the next prompt dispatch. `healthy` only latches false if the maintenance loop
+    // itself dies, which is the only condition that must keep rejecting prompts.
     const ensureProviderOwnerHealthy = Effect.gen(function* () {
       if (!(yield* Ref.get(providerOwnerHealthy)))
         return yield* Effect.die(new Error("provider owner runtime is unhealthy"))
@@ -1231,7 +1292,25 @@ export const layer = Layer.effect(
           : Effect.void,
       ),
     )
+    // BUG-003 restart recovery: settle federation activities left `active` by a dead run loop,
+    // mirroring the legacy recovery above (both run once at process start; without this the
+    // session's partial unique index stays locked and every new input attaches to the stale
+    // activity). Failures are logged, never fatal — startup must not die on best-effort cleanup.
+    if (federation) {
+      yield* federation.settleOrphanedActivities().pipe(
+        Effect.tap((count) =>
+          count > 0 ? Effect.logWarning(`settled ${count} orphaned federated activities after restart`) : Effect.void,
+        ),
+        Effect.catchCause((cause) =>
+          Effect.logWarning(`federated activity restart recovery failed: ${Cause.pretty(cause)}`),
+        ),
+      )
+    }
     const activeFederatedContexts = new Map<SessionID, SessionFederatedContext.Resolved>()
+    // BUG-004: consecutive steer-absorption rounds within the current activity run, per session.
+    // Reset at the top of every runLoop invocation (one invocation = one activity run); bounded by
+    // flags.steerAbsorbLimit at the model boundary so steers cannot extend old work without bound.
+    const steerAbsorbRounds = new Map<SessionID, number>()
     const activeReleasedKnowledge = new Map<
       SessionID,
       {
@@ -2893,21 +2972,39 @@ export const layer = Layer.effect(
           const run = admitted.materialized.run
           if (!run)
             return yield* Effect.die(new Error(`run-now prompt created an empty activity run: ${input.sessionID}`))
+          // BUG-407-012 gap C: durable evidence that the legacy activity run was claimed.
+          yield* TurnStageEvidence.record(db, {
+            sessionID: input.sessionID,
+            activityID: run.activityID,
+            stage: "activity_claimed",
+            details: { via: "admit" },
+          })
           yield* pauseAtActivityCrashPoint("after_admit_and_bind")
           if (lifecycle) yield* lifecycle.ready({ messageID: admitted.message.info.id, delivery: "turn" })
           return yield* runLoop(input.sessionID, false, run)
         }).pipe(
-          Effect.onInterrupt(() => {
+          // BUG-008: terminalize on EVERY abnormal exit, not only interruption. A failure or defect
+          // between admit (which claims the legacy activity run) and runLoop's own exit hook
+          // previously left the activity `active`; the next admission then refused with "requires
+          // recovery before a new turn". finalizeCancellationBeforeProgress is CAS-guarded, so the
+          // loop-level hook and this handler are safe to both run.
+          Effect.onExit((exit) => {
+            if (Exit.isSuccess(exit)) return Effect.void
+            const interrupted = Cause.interruptors(exit.cause).size > 0
             const run = ownedRun.value
             return Effect.all(
               [
-                settleFederatedActivity(input.sessionID, "interrupted"),
+                settleFederatedActivity(input.sessionID, interrupted ? "interrupted" : "failed"),
                 run
                   ? SessionPromptIntent.finalizeCancellationBeforeProgress(run).pipe(
                       Effect.provideService(Database.Service, database),
                       Effect.flatMap((result) =>
                         result ? publishActivityProjection(result.invalidation) : Effect.void,
                       ),
+                      // The loop-level hook may have committed a terminal with a different decision
+                      // shape already (failure exit); the activity is terminal either way, so the
+                      // divergent replay is benign here.
+                      Effect.catchTag("SessionPromptIntent.Conflict", () => Effect.void),
                     )
                   : Effect.void,
               ],
@@ -3358,12 +3455,7 @@ export const layer = Layer.effect(
       "</system-reminder>",
     ].join("\n")
 
-    const runLoop: (
-      sessionID: SessionID,
-      drainFirst?: boolean,
-      activityRun?: SessionPromptIntent.RunIdentity,
-      onActivityRun?: (run: SessionPromptIntent.RunIdentity) => void,
-    ) => Effect.Effect<SessionV1.WithParts, SessionPromptIntent.Error> = Effect.fn("SessionPrompt.run")(
+    const runLoopInner = Effect.fn("SessionPrompt.run")(
       // §S1.2: `drainFirst` — a PURE-DRAIN turn (started to absorb a steer that landed in the isBusy→admit
       // race, with no initiating user message of its own) must drain on step 0 too; otherwise the step-0
       // skip + the immediate finish check would break before the steer is ever consumed. A normal turn
@@ -3384,6 +3476,8 @@ export const layer = Layer.effect(
         // that occurs when the model repeatedly guesses wrong field names (e.g. "summary" instead
         // of "module" for ResearchResult) and the AI SDK silently rejects them before execute().
         let structuredFailedAttempts = 0
+        // BUG-004: fresh activity run — restart the steer-absorption accounting.
+        steerAbsorbRounds.delete(sessionID)
         yield* sessions.recoverForks()
         yield* sessions.assertRunnable(sessionID).pipe(Effect.orDie)
         const session = yield* sessions.get(sessionID).pipe(Effect.orDie)
@@ -3442,6 +3536,14 @@ export const layer = Layer.effect(
                 Effect.map((activity) => (activity?.state === "active" ? activity : undefined)),
               )
             : undefined
+        // BUG-407-012 gap C: persist durable stage evidence at each provider-turn boundary.
+        // Record-only: single forward-only upsert that never throws, so it cannot alter
+        // turn timing (in particular terminal settlement ordering).
+        const recordTurnStage = (stage: TurnStageEvidence.Stage, details?: Record<string, unknown>) => {
+          const activityID = currentActivityRun?.activityID ?? legacyActivity?.activityID
+          if (!activityID) return Effect.void
+          return TurnStageEvidence.record(db, { sessionID, activityID, stage, ...(details ? { details } : {}) })
+        }
         let providerBoundary: SessionPromptIntent.ProviderInputBoundary | undefined
         let activityTerminalCommitted = false
         const enterFinalizing = (run: SessionPromptIntent.RunIdentity) =>
@@ -3578,9 +3680,16 @@ export const layer = Layer.effect(
                 if (currentActivityRun) {
                   yield* pauseAtActivityCrashPoint("after_admit_and_bind")
                   legacyActivity = { activityID: currentActivityRun.activityID, state: "active" as const }
+                  yield* TurnStageEvidence.record(db, {
+                    sessionID,
+                    activityID: currentActivityRun.activityID,
+                    stage: "activity_claimed",
+                    details: { via: "steer_claim" },
+                  })
                 }
               }
               const absorbed = yield* drainSteers(sessionID, drainFirst && step === 0)
+              if (absorbed.length > 0) steerAbsorbRounds.set(sessionID, (steerAbsorbRounds.get(sessionID) ?? 0) + 1)
               pendingContextInputIds = [...pendingContextInputIds, ...absorbed]
             }
           }
@@ -3718,6 +3827,16 @@ export const layer = Layer.effect(
 
           const model = yield* getModel(lastUser.model.providerID, lastUser.model.modelID, sessionID)
           const finalizerDecision = finalizerMode ? LLM.finalizerCapability(model) : undefined
+          // UPD-002: wire structured-output decision (single helper shared with
+          // LLMRequestPrep.prepare). Wire mode ⇒ skip the synthesized
+          // StructuredOutput tool below; the json_schema travels as the
+          // request's wire format and the final assistant text carries the
+          // JSON value. Synthetic path unchanged for every other family.
+          const wireStructuredOutput = LLMRequestPrep.shouldUseWireStructuredOutput({
+            user: lastUser,
+            model,
+            flags,
+          })
           const task = finalizerMode ? undefined : tasks.pop()
 
           if (task?.type === "subtask") {
@@ -3806,6 +3925,16 @@ export const layer = Layer.effect(
               }
               if (action === "fallback") {
                 yield* writeSoftLandingState(sessionID, nextState)
+                // UPD-005 micro-compact: on entering the fallback phase, prune with a SMALLER
+                // protect window (MICRO_COMPACT_PROTECT < PRUNE_PROTECT) to truncate older
+                // non-protected tool results in place and buy headroom before the hard line.
+                // prune keeps its time.compacted idempotency guard, so repeated fallback entries
+                // (and the later turn-end / hard-phase prunes) never double-truncate. Failure is
+                // swallowed (same posture as the turn-end prune) — micro-compact is an
+                // optimization and must not block the soft-landing fallback note.
+                yield* compaction
+                  .prune({ sessionID, protect: SessionCompaction.MICRO_COMPACT_PROTECT })
+                  .pipe(Effect.ignore)
                 yield* injectTailReminder(
                   sessionID,
                   fallbackTailText(sessionID),
@@ -3948,49 +4077,84 @@ export const layer = Layer.effect(
           const receiptFinalizer: { value?: () => Effect.Effect<void> } = {}
           const activityProgressFinalizer: { value?: () => Effect.Effect<void> } = {}
           let progressAssistantMessageID: MessageID | undefined
-          const finalizeInterruptedTurn = Effect.uninterruptible(
-            Effect.gen(function* () {
-              yield* finalizeInterruptedAssistant
-              receiptTerminal.value ??= { state: "failed", errorCode: "AbortError" }
-              if (receiptFinalizer.value) yield* receiptFinalizer.value()
-              const decision = terminalDecision("interrupted", "user_cancelled", "cancel")
-              const finalized =
-                currentActivityRun && providerBoundary && decision
-                  ? yield* (
-                      progressAssistantMessageID
-                        ? SessionPromptIntent.finalizeActivityWithRevision({
-                            run: currentActivityRun,
-                            assistantMessageID: progressAssistantMessageID,
-                            decision,
-                          })
-                        : SessionPromptIntent.finalizeActivityWithoutRevision({
-                            run: currentActivityRun,
-                            membershipOrdinal: providerBoundary.membershipOrdinal,
-                            decision,
-                          })
-                    ).pipe(
-                      Effect.provideService(Database.Service, database),
-                      Effect.tap((result) =>
-                        Effect.sync(() => {
-                          activityTerminalCommitted = result.kind !== "follow_up_required"
-                        }),
-                      ),
-                      Effect.tap((result) =>
-                        result.kind === "follow_up_required"
-                          ? Effect.void
-                          : publishActivityProjection(result.invalidation),
-                      ),
-                    )
-                  : undefined
-              if (!finalized && activityProgressFinalizer.value) yield* activityProgressFinalizer.value()
-              if (legacyActivity && !activityProgressFinalizer.value && !finalized)
-                yield* SessionPromptIntent.interruptActivity(legacyActivity.activityID).pipe(
-                  Effect.provideService(Database.Service, database),
-                  Effect.flatMap((activity) => (activity ? publishActivityProjection(activity) : Effect.void)),
-                )
-            }),
-          )
+          const finalizeAbnormalTurn = (
+            terminalState: "interrupted" | "failed",
+            reasonCode: string,
+            source: "provider_final" | "host_stop" | "cancel",
+            errorCode: string,
+          ) =>
+            Effect.uninterruptible(
+              Effect.gen(function* () {
+                yield* finalizeInterruptedAssistant
+                receiptTerminal.value ??= { state: "failed", errorCode }
+                if (receiptFinalizer.value) yield* receiptFinalizer.value()
+                const baseDecision = terminalDecision(terminalState, reasonCode, source)
+                // Durable authority: the terminal guard rejects settling an activity while a tool
+                // permission effect is still in flight. A concurrently-finishing tool settles its
+                // effect imminently; wait for it, then route a clean interrupt/settle through
+                // recovery_required if a quarantined (unknown) effect remains.
+                const decision =
+                  baseDecision && currentActivityRun
+                    ? yield* SessionPromptIntent.awaitTerminalPermissionEffects({
+                        activityID: currentActivityRun.activityID,
+                      }).pipe(
+                        Effect.provideService(Database.Service, database),
+                        Effect.map((effects) =>
+                          (effects.unresolvedUnknown || effects.startedTimedOut) &&
+                          (baseDecision.state === "interrupted" || baseDecision.state === "settled")
+                            ? {
+                                ...baseDecision,
+                                state: "recovery_required" as const,
+                                reasonCode: "permission_effect_outcome_unknown",
+                              }
+                            : baseDecision,
+                        ),
+                      )
+                    : baseDecision
+                const finalized =
+                  currentActivityRun && providerBoundary && decision
+                    ? yield* (
+                        progressAssistantMessageID
+                          ? SessionPromptIntent.finalizeActivityWithRevision({
+                              run: currentActivityRun,
+                              assistantMessageID: progressAssistantMessageID,
+                              decision,
+                            })
+                          : SessionPromptIntent.finalizeActivityWithoutRevision({
+                              run: currentActivityRun,
+                              membershipOrdinal: providerBoundary.membershipOrdinal,
+                              decision,
+                            })
+                      ).pipe(
+                        Effect.provideService(Database.Service, database),
+                        Effect.tap((result) =>
+                          Effect.sync(() => {
+                            activityTerminalCommitted = result.kind !== "follow_up_required"
+                          }),
+                        ),
+                        Effect.tap((result) =>
+                          result.kind === "follow_up_required"
+                            ? Effect.void
+                            : publishActivityProjection(result.invalidation),
+                        ),
+                      )
+                    : undefined
+                if (!finalized && activityProgressFinalizer.value) yield* activityProgressFinalizer.value()
+                if (legacyActivity && !activityProgressFinalizer.value && !finalized)
+                  yield* SessionPromptIntent.interruptActivity(legacyActivity.activityID).pipe(
+                    Effect.provideService(Database.Service, database),
+                    Effect.flatMap((activity) => (activity ? publishActivityProjection(activity) : Effect.void)),
+                  )
+                yield* recordTurnStage("terminal_settled", {
+                  state: decision?.state,
+                  reasonCode: decision?.reasonCode,
+                  via: "abnormal_turn",
+                })
+              }),
+            )
+          const finalizeInterruptedTurn = finalizeAbnormalTurn("interrupted", "user_cancelled", "cancel", "AbortError")
 
+          yield* recordTurnStage("snapshot_started")
           const handle = yield* processor
             .create({
               assistantMessage: msg,
@@ -3998,10 +4162,14 @@ export const layer = Layer.effect(
               model,
               sequenceTracker: toolSequenceTracker,
               planTracker: planProtocolTracker,
+              ...(legacyActivity ? { activityID: legacyActivity.activityID } : {}),
               loopPolicy: finalizerMode || taskActivity ? "error" : "ask",
               noProgressLimit: taskActivity?.maxNoProgress,
             })
             .pipe(Effect.onInterrupt(() => finalizeInterruptedTurn))
+          yield* handle.snapshotOutcome.degraded
+            ? recordTurnStage("snapshot_degraded", handle.snapshotOutcome.degraded)
+            : recordTurnStage("snapshot_finished")
 
           const outcome: "break" | "continue" = yield* Effect.gen(function* () {
             sessionFederationActivation = yield* activateFederation()
@@ -4029,7 +4197,7 @@ export const layer = Layer.effect(
                   Effect.provideService(RuntimeFlags.Service, flags),
                 )
 
-            if (lastUser.format?.type === "json_schema") {
+            if (lastUser.format?.type === "json_schema" && !wireStructuredOutput) {
               tools["StructuredOutput"] = createStructuredOutputTool({
                 schema: lastUser.format.schema,
                 onSuccess(output) {
@@ -4081,6 +4249,7 @@ export const layer = Layer.effect(
                   })
                 : providerHistory
             const modelMsgs = yield* MessageV2.toModelMessagesEffect(historyForProvider, model, { terminalBoundaryID })
+            yield* recordTurnStage("history_loaded", { messages: providerHistory.length })
             const system = yield* Effect.all([
               sys.skills(agent),
               sys.environment(model),
@@ -4183,7 +4352,12 @@ export const layer = Layer.effect(
             // system prefix. Keep it in the same ephemeral tail used for other volatile runtime
             // context; strict turns use StructuredOutput as the hard gate, while the bounded text
             // fallback uses local JSON extraction plus the unchanged schema validator.
-            const structuredRuntimeTail = buildStructuredOutputRuntimeTail(format, finalizerMode, finalizerAllowsText)
+            const structuredRuntimeTail = buildStructuredOutputRuntimeTail(
+              format,
+              finalizerMode,
+              finalizerAllowsText,
+              wireStructuredOutput,
+            )
             const baseStreamInput: LLM.StreamInput = {
               user: lastUser,
               agent,
@@ -4198,7 +4372,9 @@ export const layer = Layer.effect(
               releasedKnowledgeSelection,
               toolChoice: finalizerAllowsText
                 ? "none"
-                : (finalizerDecision?.toolChoice ?? (format.type === "json_schema" ? "required" : undefined)),
+                : (finalizerDecision?.toolChoice ??
+                  // UPD-002: wire mode has no StructuredOutput tool to force.
+                  (format.type === "json_schema" && !wireStructuredOutput ? "required" : undefined)),
               reasoning: finalizerDecision?.reasoning,
               ...(structuredRuntimeTail ? { runtimeTail: structuredRuntimeTail } : {}),
               ...(!projectedContext && activeContext
@@ -4327,10 +4503,13 @@ export const layer = Layer.effect(
                         ),
                       )
                     const admittedAt = Date.now()
+                    // BUG-407-012 root cause A: read the live owner generation at use time; the
+                    // startup token may already be fenced and rotated away by the maintenance loop.
+                    const providerOwnerCurrent = yield* Ref.get(providerOwnerState)
                     const providerAttempt = providerAttemptAdmission
                       ? yield* SessionProviderAttempt.prepareInTransaction(tx, {
                           ...providerAttemptAdmission,
-                          ownerToken: providerOwnerToken,
+                          ownerToken: providerOwnerCurrent.ownerToken,
                           now: admittedAt,
                         })
                       : undefined
@@ -4388,6 +4567,12 @@ export const layer = Layer.effect(
                       context_readiness: sessionFederationActivation.readiness,
                       context_activation: contextActivation,
                       context_activation_fingerprint: contextActivationFingerprint,
+                      // FEAT-007 attribution: the gateway locks the run's active pack snapshot id onto
+                      // the session state at the run entry (single authority, FEAT-002 — derived from the
+                      // same activation knowledge retrieval constrains on). Read it through; NULL when no
+                      // gateway run locked a snapshot for this session (never blocks admission).
+                      context_active_pack_set_snapshot_id:
+                        AgentGateway.DeepAgentSessionState.get(sessionID)?.packSnapshotId ?? null,
                       released_knowledge_security_namespace_id: releasedKnowledgeIdentity.securityNamespaceId,
                       released_knowledge_project_scope_key: releasedKnowledgeIdentity.projectScopeKey,
                       released_knowledge_binding_state: releasedKnowledgeBinding.state,
@@ -4420,10 +4605,18 @@ export const layer = Layer.effect(
                       response_chain_reuse_decision: "not_supported",
                       response_chain_refusal_reason: "provider_path_not_stateful",
                       provider_state: "preparing",
-                      owner_token: providerOwnerToken,
+                      owner_token: providerOwnerCurrent.ownerToken,
                       request_state: "prepared",
                       created_at: admittedAt,
                     })
+                    if (legacyActivity)
+                      yield* TurnStageEvidence.recordInTransaction(tx, {
+                        sessionID,
+                        activityID: legacyActivity.activityID,
+                        stage: "request_prepared",
+                        now: admittedAt,
+                        details: { receiptID, requestOrdinal },
+                      })
                     if (continuation) {
                       const admitted = yield* tx
                         .update(CompactionRunTable)
@@ -4464,7 +4657,13 @@ export const layer = Layer.effect(
                 assistantMessageID: handle.message.id,
                 providerReceiptID: receiptID,
                 membershipOrdinal: providerBoundary?.membershipOrdinal,
-              }).pipe(Effect.provideService(Database.Service, database), Effect.tap(publishActivityProgress))
+              }).pipe(
+                Effect.provideService(Database.Service, database),
+                // BUG-407-008 §6.2 P1/P2: test-only crash points (no-op outside the crash env).
+                Effect.tap(() => pauseAtActivityCrashPoint("after_begin_progress_commit_before_provisional_event")),
+                Effect.tap(publishActivityProgress),
+                Effect.tap(() => pauseAtActivityCrashPoint("after_provisional_event_before_provider_dispatch")),
+              )
             if (progressActivity) progressAssistantMessageID = handle.message.id
             if (progressActivity)
               activityProgressFinalizer.value = () =>
@@ -4476,6 +4675,34 @@ export const layer = Layer.effect(
                   Effect.tap(publishActivityProgress),
                   Effect.asVoid,
                 )
+            // FEAT-007: durable per-turn reconciliation of the federated selection, written
+            // immediately after the receipt admission. Best-effort by contract — a write
+            // failure is observable via the degraded metric but must never block the turn.
+            if (activeContext) {
+              yield* ContextReconciliation.record(db, {
+                sessionId: sessionID,
+                activityId: activeContext.selection.activityId,
+                turnReceiptId: receiptID,
+                selectionId: activeContext.selection.selectionId,
+                projectionRefs: activeContext.selection.selectedRefs.map((selected) => selected.ref),
+                // Legacy selected refs only materialize inside the provider prepare path; the
+                // receipt write site sees the projection selection exclusively, so the record
+                // degrades to projection-internal consistency (legacy fingerprint stays NULL).
+              }).pipe(
+                Effect.asVoid,
+                Effect.catchCause((cause) =>
+                  Effect.sync(() => {
+                    slog.warn("session context reconciliation write failed", {
+                      receiptID,
+                      sessionID,
+                      cause: Cause.pretty(cause),
+                      metric: "session_context_reconciliation_degraded_total",
+                      increment: 1,
+                    })
+                  }),
+                ),
+              )
+            }
             const bestEffortReceiptWrite = (operation: string, write: Effect.Effect<unknown, unknown>) =>
               write.pipe(
                 Effect.asVoid,
@@ -4551,12 +4778,15 @@ export const layer = Layer.effect(
                               ? input.values.terminal_at
                               : Date.now()
                       const observedAt = yield* SessionProviderOwner.observedAtInTransaction(tx)
+                      // BUG-407-012 root cause A: the lease guard runs against the current owner
+                      // generation, not the startup token captured when the layer started.
+                      const providerOwnerCurrent = yield* Ref.get(providerOwnerState)
                       const owner = yield* tx
                         .select({ ownerToken: SessionProviderOwnerLeaseTable.owner_token })
                         .from(SessionProviderOwnerLeaseTable)
                         .where(
                           and(
-                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerToken),
+                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerCurrent.ownerToken),
                             isNull(SessionProviderOwnerLeaseTable.released_at),
                             gt(SessionProviderOwnerLeaseTable.lease_expires_at, observedAt),
                           ),
@@ -4569,7 +4799,7 @@ export const layer = Layer.effect(
                         .where(
                           and(
                             eq(SessionToolRequestReceiptTable.receipt_id, receiptID),
-                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerToken),
+                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerCurrent.ownerToken),
                           ),
                         )
                         .get()
@@ -4616,7 +4846,7 @@ export const layer = Layer.effect(
                       if (input.attemptTransition && providerAttempt) {
                         yield* SessionProviderAttempt.transitionInTransaction(tx, {
                           attemptId: providerAttempt.attemptId,
-                          expectedOwnerToken: providerOwnerToken,
+                          expectedOwnerToken: providerOwnerCurrent.ownerToken,
                           from: [...input.attemptTransition.from],
                           to: input.attemptTransition.state,
                           now: input.attemptTransition.at,
@@ -4638,7 +4868,7 @@ export const layer = Layer.effect(
                         .where(
                           and(
                             eq(SessionToolRequestReceiptTable.receipt_id, receiptID),
-                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerToken),
+                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerCurrent.ownerToken),
                             eq(SessionToolRequestReceiptTable.provider_state, current.state),
                           ),
                         )
@@ -4816,6 +5046,13 @@ export const layer = Layer.effect(
                 if (!finalized && activityProgressFinalizer.value) yield* activityProgressFinalizer.value()
                 activityProgressFinalizer.value = undefined
                 turnSettled.value = true
+                // BUG-407-012 gap C: record-only evidence; settlement ordering above is unchanged.
+                yield* recordTurnStage(
+                  "terminal_settled",
+                  decision ? { state: decision.state, reasonCode: decision.reasonCode } : undefined,
+                )
+                // BUG-407-008 §6.2 P6: test-only crash point (no-op outside the crash env).
+                yield* pauseAtActivityCrashPoint("after_progress_settle_before_next_admission")
                 // Summary diffs mutate user-message metadata. Run them only after the Provider
                 // receipt is terminal so cancellation cannot strand an admitted request.
                 if (step === 1 && !finalizerMode)
@@ -4835,12 +5072,14 @@ export const layer = Layer.effect(
                     Effect.gen(function* () {
                       const preparedAt = Date.now()
                       const observedAt = yield* SessionProviderOwner.observedAtInTransaction(tx)
+                      // BUG-407-012 root cause A: read the live owner generation at use time.
+                      const providerOwnerCurrent = yield* Ref.get(providerOwnerState)
                       const owner = yield* tx
                         .select({ ownerToken: SessionProviderOwnerLeaseTable.owner_token })
                         .from(SessionProviderOwnerLeaseTable)
                         .where(
                           and(
-                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerToken),
+                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerCurrent.ownerToken),
                             isNull(SessionProviderOwnerLeaseTable.released_at),
                             gt(SessionProviderOwnerLeaseTable.lease_expires_at, observedAt),
                           ),
@@ -4880,7 +5119,7 @@ export const layer = Layer.effect(
                       if (providerAttempt)
                         yield* SessionProviderAttempt.transitionInTransaction(tx, {
                           attemptId: providerAttempt.attemptId,
-                          expectedOwnerToken: providerOwnerToken,
+                          expectedOwnerToken: providerOwnerCurrent.ownerToken,
                           from: ["prepared"],
                           to: "prepared",
                           now: preparedAt,
@@ -4938,7 +5177,7 @@ export const layer = Layer.effect(
                         .where(
                           and(
                             eq(SessionToolRequestReceiptTable.receipt_id, receiptID),
-                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerToken),
+                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerCurrent.ownerToken),
                             eq(SessionToolRequestReceiptTable.provider_state, "preparing"),
                           ),
                         )
@@ -4962,12 +5201,14 @@ export const layer = Layer.effect(
                   (tx) =>
                     Effect.gen(function* () {
                       const observedAt = yield* SessionProviderOwner.observedAtInTransaction(tx)
+                      // BUG-407-012 root cause A: read the live owner generation at use time.
+                      const providerOwnerCurrent = yield* Ref.get(providerOwnerState)
                       const owner = yield* tx
                         .select({ ownerToken: SessionProviderOwnerLeaseTable.owner_token })
                         .from(SessionProviderOwnerLeaseTable)
                         .where(
                           and(
-                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerToken),
+                            eq(SessionProviderOwnerLeaseTable.owner_token, providerOwnerCurrent.ownerToken),
                             isNull(SessionProviderOwnerLeaseTable.released_at),
                             gt(SessionProviderOwnerLeaseTable.lease_expires_at, observedAt),
                           ),
@@ -4980,7 +5221,7 @@ export const layer = Layer.effect(
                         .where(
                           and(
                             eq(SessionToolRequestReceiptTable.receipt_id, receiptID),
-                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerToken),
+                            eq(SessionToolRequestReceiptTable.owner_token, providerOwnerCurrent.ownerToken),
                             eq(SessionToolRequestReceiptTable.provider_state, "preparing"),
                           ),
                         )
@@ -5003,9 +5244,10 @@ export const layer = Layer.effect(
                 now: Date.now(),
               })
               if (!gate.allowed) {
+                const providerOwnerCurrentForRejection = yield* Ref.get(providerOwnerState)
                 yield* rejectUndispatchedProviderTurn({
                   receiptID,
-                  ownerToken: providerOwnerToken,
+                  ownerToken: providerOwnerCurrentForRejection.ownerToken,
                   ...(providerAttempt ? { providerAttemptID: providerAttempt.attemptId } : {}),
                   errorCode: `provider_dispatch_${gate.reason}`,
                 }).pipe(Effect.provideService(Database.Service, database))
@@ -5072,6 +5314,7 @@ export const layer = Layer.effect(
                         : {}),
                     })
                     if (!transitioned) return
+                    yield* recordTurnStage("provider_dispatch_started", { dispatchingAt })
                   }),
                 streaming: () =>
                   Effect.gen(function* () {
@@ -5147,6 +5390,57 @@ export const layer = Layer.effect(
             )
             if (!response) return yield* Effect.die(new Error(`provider response is missing: ${handle.message.id}`))
 
+            // UPD-002 wire mode: the provider enforced the schema via text.format,
+            // so the final assistant TEXT carries the JSON value (no synthetic
+            // tool call). Capture it here with the same validator the synthetic
+            // path uses; failures reuse the structuredFailedAttempts retry-cap.
+            if (wireStructuredOutput && structured === undefined && format.type === "json_schema") {
+              const wireText = response.parts
+                .filter(
+                  (part): part is SessionV1.TextPart =>
+                    part.type === "text" && !part.synthetic && !part.ignored && part.text.trim() !== "",
+                )
+                .map((part) => part.text)
+                .join("")
+                .trim()
+              if (wireText.length > 0) {
+                let parsed: unknown
+                let wireError: string | undefined = "Wire structured output is not valid JSON."
+                try {
+                  parsed = JSON.parse(wireText)
+                  wireError = validateStructuredOutput(format.schema, parsed)
+                } catch {
+                  parsed = undefined
+                }
+                if (!wireError) {
+                  structured = parsed
+                } else {
+                  const retryMax = format.retryCount ?? 2
+                  structuredFailedAttempts++
+                  const fields = extractSchemaTopLevelFields(format.schema)
+                  const fieldList = fields.length > 0 ? fields.join(", ") : "(see schema)"
+                  if (structuredFailedAttempts >= retryMax) {
+                    handle.message.error = new SessionV1.StructuredOutputError({
+                      message: `Wire structured output validation failed after ${structuredFailedAttempts} attempt(s). Required fields: ${fieldList}`,
+                      retries: structuredFailedAttempts,
+                    }).toObject()
+                    yield* sessions.updateMessage(handle.message)
+                    yield* settleProviderTurn(terminalDecision("failed", "structured_output_retry_exhausted"))
+                    return "break" as const
+                  }
+                  yield* settleProviderTurn()
+                  yield* injectTailReminder(
+                    sessionID,
+                    `[structured-output correction] Your previous JSON response did not match the required schema: ${wireError.slice(0, 500)} Respond again with ONLY a single JSON value using exactly these top-level fields: ${fieldList}.`,
+                    lastUser.model,
+                    lastUser.agent,
+                    SessionProcessor.planProtocolActivityID(lastUser.metadata) ?? lastUser.id,
+                  )
+                  return "continue" as const
+                }
+              }
+            }
+
             if (structured !== undefined) {
               handle.message.structured = structured
               handle.message.finish = handle.message.finish ?? "stop"
@@ -5294,7 +5588,17 @@ export const layer = Layer.effect(
             return "continue" as const
           }).pipe(
             Effect.ensuring(instruction.clear(handle.message.id)),
-            Effect.onInterrupt(() => finalizeInterruptedTurn),
+            // BUG-008: terminalize the legacy activity on EVERY abnormal exit, not only interruption.
+            // A failed/defect loop exit previously left the activity `active` and the next prompt
+            // admission refused with "requires recovery before a new turn". Success exits already
+            // commit the terminal inside the loop (activityTerminalCommitted); finalizers are
+            // idempotent through the activity CAS, so double-firing is safe.
+            Effect.onExit((exit) => {
+              if (Exit.isSuccess(exit) || activityTerminalCommitted) return Effect.void
+              return Cause.interruptors(exit.cause).size > 0
+                ? finalizeInterruptedTurn
+                : finalizeAbnormalTurn("failed", "run_loop_exit_failure", "host_stop", "RunLoopExitFailure")
+            }),
           )
           // V4.1 §S1.1 needsFollowUp: the model finished this step (outcome === "break"), but if a steer
           // arrived while it was running, do NOT exit — loop once more so the top-of-loop drain absorbs
@@ -5303,6 +5607,17 @@ export const layer = Layer.effect(
           if (outcome === "break") {
             if (activityTerminalCommitted) break
             if (!finalizerMode && flags.v4Steering && (yield* steerBuffer.hasPending(sessionID))) {
+              // BUG-004: bound the absorption. Past the limit we end THIS activity instead of
+              // continuing; drainPendingSteers re-enters with drainFirst and consumes the pending
+              // steers as a FRESH activity (the old one settles on loop exit), so input is never
+              // lost and no single activity extends without bound.
+              if ((steerAbsorbRounds.get(sessionID) ?? 0) >= flags.steerAbsorbLimit) {
+                yield* slog.info("steer absorb limit reached; ending activity, pending steers start a fresh one", {
+                  rounds: steerAbsorbRounds.get(sessionID) ?? 0,
+                  limit: flags.steerAbsorbLimit,
+                })
+                break
+              }
               yield* slog.info("steer pending at model boundary, continuing to absorb")
               continue
             }
@@ -5330,6 +5645,34 @@ export const layer = Layer.effect(
       },
     )
 
+    // BUG-003: settle the federated activity on EVERY terminal exit of the run loop. The happy
+    // path above settles just before returning; this wrapper covers error/defect/interrupt exits
+    // for all callers (prompt, loop drains, driveParentLoop) in one place instead of relying on
+    // each caller's onInterrupt hook. Idempotent with both (settle is a no-op once terminal and
+    // the in-memory map entry is removed on first settle).
+    const runLoop: (
+      sessionID: SessionID,
+      drainFirst?: boolean,
+      activityRun?: SessionPromptIntent.RunIdentity,
+      onActivityRun?: (run: SessionPromptIntent.RunIdentity) => void,
+    ) => Effect.Effect<SessionV1.WithParts, SessionPromptIntent.Error> = (
+      sessionID,
+      drainFirst,
+      activityRun,
+      onActivityRun,
+    ) =>
+      runLoopInner(sessionID, drainFirst, activityRun, onActivityRun).pipe(
+        Effect.onExit((exit) => {
+          if (Exit.isSuccess(exit)) return Effect.void
+          const state = Cause.interruptors(exit.cause).size > 0 ? ("interrupted" as const) : ("failed" as const)
+          return settleFederatedActivity(sessionID, state).pipe(
+            Effect.catchCause((cause) =>
+              Effect.logWarning(`federated activity settle failed on run-loop exit: ${Cause.pretty(cause)}`),
+            ),
+          )
+        }),
+      )
+
     // V4.1 §S1.1: admit a mid-turn user message into the durable steer buffer.
     // The canonical durable ID is always server-minted by admit(); the caller's messageID is used
     // only as an optional correlationID for idempotent retries.
@@ -5561,7 +5904,22 @@ export const layer = Layer.effect(
       if (FSUtil.resolve(session.directory) !== FSUtil.resolve(current.directory)) {
         return yield* instances.provide({ directory: session.directory }, loop(input, onRunning))
       }
-      if (federationRollout.enabled.coreV2ExecutionOwner) {
+      // FEAT-010: V2/legacy fork observability. Pure observation — the fork logic itself is
+      // untouched (no tightening, no loosening). Every loop() execution records ONE info-level
+      // structured slog with the owner selection plus the decision-factor snapshot, so production
+      // audits can answer "was the V2 owner branch selected, and why (not)" at any time.
+      const v2OwnerSelected = federationRollout.enabled.coreV2ExecutionOwner
+      yield* elog.info("v2 owner fork", {
+        sessionID: input.sessionID,
+        owner: v2OwnerSelected ? "v2" : "legacy",
+        releaseQualified: coreV2ParityVerified,
+        coreV2ExecutionOwnerFlag: flags.coreV2ExecutionOwner,
+        coreV2ExecutionOwnerEnabled: v2OwnerSelected,
+        parityCampaign: parityCampaign ? `${parityCampaign.id}:${parityCampaign.case}` : "none",
+        ownerCampaign: ownerCampaign ?? "release",
+        blockedReasons: federationRollout.blocked.coreV2ExecutionOwner ?? [],
+      })
+      if (v2OwnerSelected) {
         if (parityCampaign)
           return yield* Effect.die(new Error("V2 owner and parity recorder cannot run in the same process"))
         if (!(yield* V2ProviderTurn.ownerQualified(database.db, ownerCampaign)))
@@ -5580,6 +5938,13 @@ export const layer = Layer.effect(
         )
           return yield* Effect.die(new Error(`Legacy provider owner is still active: ${input.sessionID}`))
         return yield* Effect.gen(function* () {
+          yield* elog.info("v2 owner branch selected", {
+            sessionID: input.sessionID,
+            owner: "v2",
+            reason: "rollout_gate_open",
+            releaseQualified: coreV2ParityVerified,
+            ownerCampaign: ownerCampaign ?? "release",
+          })
           yield* status.set(input.sessionID, { type: "busy" })
           if (onRunning) yield* onRunning
           const readiness = yield* federationReadiness?.snapshot() ??
@@ -5599,6 +5964,44 @@ export const layer = Layer.effect(
             .resume(SessionV2.ID.make(input.sessionID))
             .pipe(Effect.provideService(V2ProviderTurn.CurrentOwnerCampaign, ownerCampaign))
             .pipe(Effect.orDie)
+          // FEAT-010: durable evidence correlation. The receipt row itself is written by the core
+          // runner (V2ProviderTurn.admit inside SessionRunner.runTurn during resume); read back the
+          // latest owner=v2 receipt so the slog trail ties this selection to its durable row.
+          // Best-effort: never fails the turn.
+          yield* database.db
+            .select({
+              receiptID: V2ProviderTurnReceiptTable.receipt_id,
+              state: V2ProviderTurnReceiptTable.state,
+            })
+            .from(V2ProviderTurnReceiptTable)
+            .where(
+              and(
+                eq(V2ProviderTurnReceiptTable.session_id, input.sessionID),
+                eq(V2ProviderTurnReceiptTable.owner_mode, "v2"),
+              ),
+            )
+            .orderBy(desc(V2ProviderTurnReceiptTable.request_ordinal))
+            .get()
+            .pipe(
+              Effect.orDie,
+              Effect.flatMap((receipt) =>
+                elog.info("v2 owner turn receipt", {
+                  sessionID: input.sessionID,
+                  owner: "v2",
+                  receiptID: receipt?.receiptID ?? "missing",
+                  receiptState: receipt?.state ?? "missing",
+                }),
+              ),
+            )
+            .pipe(
+              Effect.catchCause((cause) =>
+                elog.warn("v2 owner turn receipt lookup failed", {
+                  sessionID: input.sessionID,
+                  owner: "v2",
+                  error: Cause.pretty(cause),
+                }),
+              ),
+            )
           const assistant = (yield* coreV2Session
             .context(SessionV2.ID.make(input.sessionID))
             .pipe(Effect.orDie)).findLast(
@@ -5691,6 +6094,11 @@ export const layer = Layer.effect(
       )
     })
 
+    // Recovery attempts for one session serialize through this mutex: recursive instance loads
+    // (loop() redirects into instances.load when the EventRoute differs, which re-runs this
+    // initializer) can fork duplicate recovery loops before the fail-closed transition lands.
+    const recoveryMutex = KeyedMutex.makeUnsafe<string>()
+
     const wakeCommittedContinuations = (ctx: InstanceContext) =>
       Effect.runPromise(
         Effect.gen(function* () {
@@ -5698,19 +6106,36 @@ export const layer = Layer.effect(
           yield* Effect.forEach(
             pending,
             (item) =>
-              loop({ sessionID: item.sessionID }).pipe(
-                Effect.catchCause((cause) =>
-                  Effect.logError("committed compaction continuation recovery failed").pipe(
-                    Effect.annotateLogs({
-                      runID: item.runID,
-                      sessionID: item.sessionID,
-                      messageID: item.messageID,
-                      cause,
-                    }),
-                  ),
-                ),
-                Effect.forkIn(scope),
-              ),
+              recoveryMutex
+                .withLock(item.sessionID)(
+                  Effect.gen(function* () {
+                    // Re-check under the lock: a concurrent wake may already have failed the run
+                    // closed while this fork was waiting.
+                    const recoverable = yield* compaction.recoverableContinuations(ctx.project.id)
+                    if (!recoverable.some((row) => row.runID === item.runID)) return
+                    yield* loop({ sessionID: item.sessionID }).pipe(
+                      Effect.catchCause((cause) =>
+                        // BUG-407-009 §10.1: continuation recovery is a Maintenance deliverable,
+                        // so a failed attempt is the expected fail-closed outcome — warn (not
+                        // error) and stop advertising the run as recoverable.
+                        Effect.logWarning("compaction continuation recovery unavailable; failing closed").pipe(
+                          Effect.annotateLogs({
+                            runID: item.runID,
+                            sessionID: item.sessionID,
+                            messageID: item.messageID,
+                            causeDetail: Cause.pretty(cause),
+                          }),
+                          Effect.andThen(
+                            compaction
+                              .failContinuationClosed({ runID: item.runID })
+                              .pipe(Effect.provideService(Database.Service, database)),
+                          ),
+                        ),
+                      ),
+                    )
+                  }),
+                )
+                .pipe(Effect.forkIn(scope)),
             { discard: true },
           )
         }).pipe(Effect.provideService(InstanceRef, ctx)),
diff --git a/packages/deepagent-code/src/session/remote-compact.ts b/packages/deepagent-code/src/session/remote-compact.ts
new file mode 100644
index 00000000..66b9b9cd
--- /dev/null
+++ b/packages/deepagent-code/src/session/remote-compact.ts
@@ -0,0 +1,245 @@
+// UPD-005 (/responses/compact): server-side history compaction seam.
+//
+// OpenAI serves a unary `/responses/compact` endpoint that returns the
+// compacted item list with a `compaction` item carrying opaque
+// `encrypted_content` (server-held encrypted context). This module owns:
+//   1. the capability decision (canonical OpenAI Responses route only —
+//      compatible families are never assumed to serve it),
+//   2. the session-scoped staging of `encrypted_content`,
+//   3. the unary call itself, with fail-over to the local summary path on
+//      any error.
+//
+// PERSISTENCE (Gap 1 closed): `encrypted_content` is durably stored in
+// `session_compaction_encrypted_content` (migration
+// 20260820000000_remote_compact_persistence). EncryptedContentStore is the
+// read/write wrapper over that table — get/set/clear keep their signatures.
+// The compaction layer binds the Database handle (EncryptedContentStore.bind);
+// without a bound handle the store degrades to process-lifetime memory (unit
+// tests and callers outside the durable compaction path). With a bound handle,
+// a restart no longer loses the blob: the next compaction reads it back from
+// the table and replays it (§4.3).
+import { Effect } from "effect"
+import type { ModelMessage } from "ai"
+import { eq } from "drizzle-orm"
+import { OpenAIResponses } from "@deepagent-code/llm/protocols/openai-responses"
+import { byProvider as OpenAICompatibleProfiles } from "@deepagent-code/llm/providers/openai-compatible-profile"
+import type { LLMRequest } from "@deepagent-code/llm"
+import type { RequestExecutor } from "@deepagent-code/llm/route"
+import type { Database } from "@deepagent-code/core/database/database"
+import type { Auth } from "@/auth"
+import type { Provider } from "@/provider/provider"
+import { SessionCompactionEncryptedContentTable } from "./compaction-sql"
+import { LLMNative } from "./llm/native-request"
+import { LLMNativeRuntime } from "./llm/native-runtime"
+
+/**
+ * Capability probe for `/responses/compact`.
+ * - `@ai-sdk/openai` lowers onto the OpenAI Responses route, whose protocol
+ *   advertises compact support (canonical OpenAI).
+ * - `@ai-sdk/openai-compatible` families must opt in per profile
+ *   (`supportsResponsesCompact`); only DeepSeek does today (user-verified
+ *   2026-08-18) — never assumed for anyone else.
+ * - Azure also serves the Responses API, but its endpoint path is shaped
+ *   differently (`/openai/responses?api-version=…`) and compact there is
+ *   unverified — deliberately not assumed either.
+ */
+export const supportsRemoteCompaction = (model: Provider.Model): boolean => {
+  if (model.api.npm === "@ai-sdk/openai") return OpenAIResponses.supportsRemoteCompaction
+  if (model.api.npm === "@ai-sdk/openai-compatible")
+    return OpenAICompatibleProfiles[String(model.providerID)]?.supportsResponsesCompact === true
+  return false
+}
+
+// Attribution recorded with a stored blob: provenance for the same-source
+// replay check (providerID) plus optional capability re-check and run linkage.
+export type EncryptedContentAttribution = {
+  readonly providerID?: string
+  readonly modelID?: string
+  readonly sourceRunID?: string
+}
+
+export type EncryptedContentRecord = {
+  readonly encryptedContent: string
+  readonly providerID: string
+  readonly modelID: string | undefined
+  readonly sourceRunID: string | undefined
+  readonly createdAt: number
+  readonly updatedAt: number
+}
+
+// Bound by the compaction layer (production) or tests. The bun SQLite driver is
+// fully synchronous, so the store keeps its synchronous get/set/clear signatures
+// by running the drizzle effects with Effect.runSync.
+let boundDb: Database.Interface["db"] | undefined
+
+// Fallback for callers without a bound Database handle (unit tests, seams used
+// before the compaction layer is built). Never read when a handle is bound.
+const memory = new Map<string, EncryptedContentRecord>()
+
+const readRecord = (sessionID: string): EncryptedContentRecord | undefined => {
+  if (!boundDb) return memory.get(sessionID)
+  const row = Effect.runSync(
+    boundDb
+      .select()
+      .from(SessionCompactionEncryptedContentTable)
+      .where(eq(SessionCompactionEncryptedContentTable.session_id, sessionID))
+      .get()
+      .pipe(Effect.orDie),
+  )
+  if (!row) return undefined
+  return {
+    encryptedContent: row.encrypted_content,
+    providerID: row.provider_id,
+    modelID: row.model_id ?? undefined,
+    sourceRunID: row.source_run_id ?? undefined,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at,
+  }
+}
+
+const writeRecord = (sessionID: string, value: string, attribution: EncryptedContentAttribution | undefined) => {
+  const now = Date.now()
+  const providerID = attribution?.providerID ?? "unknown"
+  const modelID = attribution?.modelID ?? null
+  const sourceRunID = attribution?.sourceRunID ?? null
+  if (!boundDb) {
+    memory.set(sessionID, {
+      encryptedContent: value,
+      providerID,
+      modelID: modelID ?? undefined,
+      sourceRunID: sourceRunID ?? undefined,
+      createdAt: now,
+      updatedAt: now,
+    })
+    return
+  }
+  // Forward-only upsert: keep exactly the latest blob per session (§4.1).
+  Effect.runSync(
+    boundDb
+      .insert(SessionCompactionEncryptedContentTable)
+      .values({
+        session_id: sessionID,
+        encrypted_content: value,
+        provider_id: providerID,
+        model_id: modelID,
+        source_run_id: sourceRunID,
+        created_at: now,
+        updated_at: now,
+      })
+      .onConflictDoUpdate({
+        target: SessionCompactionEncryptedContentTable.session_id,
+        set: {
+          encrypted_content: value,
+          provider_id: providerID,
+          model_id: modelID,
+          source_run_id: sourceRunID,
+          updated_at: now,
+        },
+      })
+      .run()
+      .pipe(Effect.orDie),
+  )
+}
+
+const deleteRecord = (sessionID: string) => {
+  if (!boundDb) {
+    memory.delete(sessionID)
+    return
+  }
+  Effect.runSync(
+    boundDb
+      .delete(SessionCompactionEncryptedContentTable)
+      .where(eq(SessionCompactionEncryptedContentTable.session_id, sessionID))
+      .run()
+      .pipe(Effect.orDie),
+  )
+}
+
+export const EncryptedContentStore = {
+  /** Bind the durable Database handle; pass undefined to restore memory-only mode. */
+  bind: (db: Database.Interface["db"] | undefined): void => {
+    boundDb = db
+  },
+  get: (sessionID: string): string | undefined => readRecord(sessionID)?.encryptedContent,
+  /** Full record incl. provenance — used for the same-source replay check (§4.3). */
+  getRecord: (sessionID: string): EncryptedContentRecord | undefined => readRecord(sessionID),
+  set: (sessionID: string, value: string, attribution?: EncryptedContentAttribution): void => {
+    writeRecord(sessionID, value, attribution)
+  },
+  clear: (sessionID: string): void => {
+    deleteRecord(sessionID)
+  },
+} as const
+
+export type RemoteCompactionOutcome =
+  | { readonly used: "remote"; readonly encryptedContent: string }
+  | { readonly used: "local"; readonly reason: string }
+
+export type RemoteCompactionInput = {
+  readonly sessionID: string
+  readonly model: Provider.Model
+  readonly provider: Provider.Info
+  readonly auth: Auth.Info | undefined
+  readonly system?: readonly string[]
+  readonly messages: readonly ModelMessage[]
+}
+
+const errorMessage = (error: unknown): string => (error instanceof Error ? error.message : String(error))
+
+/**
+ * Attempt server-side compaction; never throws the decision out — every
+ * failure mode (unsupported provider, missing API key, transport/HTTP error,
+ * malformed compact payload) resolves to `{ used: "local" }` so callers keep
+ * the existing local summary path with zero behavioural change.
+ *
+ * Requires `RequestExecutor.Service` in the environment (production provides
+ * `RequestExecutor.defaultLayer`; tests inject a mock HTTP layer).
+ */
+export const attemptRemoteCompaction = (
+  input: RemoteCompactionInput,
+): Effect.Effect<RemoteCompactionOutcome, never, RequestExecutor.Service> =>
+  Effect.gen(function* () {
+    if (!supportsRemoteCompaction(input.model)) {
+      // Capability lost (e.g. the session switched to a model whose route does
+      // not serve /responses/compact): local summarization takes over and the old
+      // blob is invalidated so it can never be replayed against an incapable route (§4.3).
+      EncryptedContentStore.clear(input.sessionID)
+      return { used: "local", reason: `provider package ${input.model.api.npm} does not serve /responses/compact` }
+    }
+
+    const runtime = LLMNativeRuntime.status(input)
+    if (runtime.type === "unsupported") return { used: "local", reason: runtime.reason }
+
+    // Same-provenance check BEFORE replay (§4.3): a blob minted by a different
+    // provider cannot be expanded by the current one — treat it as absent, drop
+    // it, and fail over to local summarization.
+    const record = EncryptedContentStore.getRecord(input.sessionID)
+    if (record && record.providerID !== input.model.providerID) {
+      EncryptedContentStore.clear(input.sessionID)
+      return {
+        used: "local",
+        reason: `encrypted_content belongs to provider ${record.providerID}, not ${input.model.providerID}`,
+      }
+    }
+    const previous = record?.encryptedContent
+
+    const request: LLMRequest = LLMNative.request({
+      model: input.model,
+      apiKey: runtime.apiKey,
+      baseURL: runtime.baseURL,
+      system: [...(input.system ?? [])],
+      messages: [...input.messages],
+    })
+    const result = yield* OpenAIResponses.compactConversation({ request, previousEncryptedContent: previous }).pipe(
+      Effect.map((value) => ({ ok: true as const, value })),
+      Effect.catch((error) => Effect.succeed({ ok: false as const, error })),
+    )
+    if (!result.ok) return { used: "local", reason: errorMessage(result.error) }
+    EncryptedContentStore.set(input.sessionID, result.value.encryptedContent, {
+      providerID: input.model.providerID,
+      modelID: input.model.id,
+    })
+    return { used: "remote", encryptedContent: result.value.encryptedContent } satisfies RemoteCompactionOutcome
+  })
+
+export * as RemoteCompact from "./remote-compact"
diff --git a/packages/deepagent-code/src/session/retry.ts b/packages/deepagent-code/src/session/retry.ts
index d025ba29..621b97f9 100644
--- a/packages/deepagent-code/src/session/retry.ts
+++ b/packages/deepagent-code/src/session/retry.ts
@@ -154,6 +154,60 @@ function parseJSON(value: unknown) {
   })
 }
 
+/**
+ * Structural view of `@deepagent-code/llm` `LLMError` values. Detection is
+ * structural (not instanceof) so the classification survives error wrapping
+ * across stream/runtime boundaries; the llm schema classes satisfy it.
+ */
+export interface LLMErrorShape {
+  readonly _tag: "LLM.Error"
+  readonly reason: {
+    readonly _tag: string
+    readonly message?: string | undefined
+    readonly phase?: "pre-dispatch" | "post-dispatch" | undefined
+    readonly status?: number | undefined
+  }
+}
+
+export function isLLMError(error: unknown): error is LLMErrorShape {
+  if (!isRecord(error) || error._tag !== "LLM.Error") return false
+  return isRecord(error.reason) && typeof error.reason._tag === "string"
+}
+
+/**
+ * Classification-first retry decision based on the llm package's error
+ * reason, used whenever a reason is available. The string heuristics in
+ * `retryable` remain only as the fallback for errors without a reason.
+ *
+ * - `RateLimit` / `ProviderInternal` (429 / 5xx): transient, retry.
+ * - `Transport`: retry ONLY for `phase: "pre-dispatch"` — the request never
+ *   reached the provider. Post-dispatch transport failures may already have
+ *   been billed, so re-sending them here would duplicate the physical
+ *   request; recovery belongs to provider-attempt replay.
+ * - Everything else (`InvalidRequest`, `Authentication`, `QuotaExceeded`,
+ *   `ContentPolicy`, `NoRoute`, `InvalidProviderOutput`, `UnknownProvider`)
+ *   is terminal: no retry, no fallback to message heuristics.
+ */
+export function retryableViaReason(error: LLMErrorShape): Retryable | undefined {
+  const reason = error.reason
+  switch (reason._tag) {
+    case "RateLimit":
+      return { message: reason.message ?? "Rate Limited" }
+    case "ProviderInternal":
+      return { message: reason.message ?? "Provider is overloaded" }
+    case "Transport":
+      return reason.phase === "pre-dispatch" ? { message: reason.message ?? "Provider connection failed" } : undefined
+    default:
+      return undefined
+  }
+}
+
+/** Retry decision for a raw stream failure plus its parsed `Err` form. */
+export function retryableFor(raw: unknown, parsed: Err, provider: string): Retryable | undefined {
+  if (isLLMError(raw)) return retryableViaReason(raw)
+  return retryable(parsed, provider)
+}
+
 export function policy(opts: {
   provider: string
   parse: (error: unknown) => Err
@@ -162,7 +216,9 @@ export function policy(opts: {
   return Schedule.fromStepWithMetadata(
     Effect.succeed((meta: Schedule.InputMetadata<unknown>) => {
       const error = opts.parse(meta.input)
-      const retry = retryable(error, opts.provider)
+      // Prefer the llm reason classification when the raw failure carries one;
+      // fall back to the string heuristics for SDK/plain errors.
+      const retry = retryableFor(meta.input, error, opts.provider)
       if (!retry) return Cause.done(meta.attempt)
       return Effect.gen(function* () {
         const wait = delay(meta.attempt, SessionV1.APIError.isInstance(error) ? error : undefined)
diff --git a/packages/deepagent-code/src/session/session.ts b/packages/deepagent-code/src/session/session.ts
index 2b7f1572..f32afb15 100644
--- a/packages/deepagent-code/src/session/session.ts
+++ b/packages/deepagent-code/src/session/session.ts
@@ -74,7 +74,8 @@ import { Hash } from "@deepagent-code/core/util/hash"
 import { CanonicalJson } from "@deepagent-code/core/util/canonical-json"
 import { SessionPromptEpochTable } from "./prompt-epoch.sql"
 import { HistoryAuthority } from "./history-authority"
-import { Data } from "effect"
+import { SessionDiffArtifact } from "./diff-artifact"
+import { Cause, Data } from "effect"
 import { KeyedMutex } from "@deepagent-code/core/effect/keyed-mutex"
 
 const log = Log.create({ service: "session" })
@@ -1050,7 +1051,7 @@ export const layer: Layer.Layer<
           .pipe(Effect.orDie)
         if (existing && existing.session_id !== msg.sessionID)
           return yield* Effect.die(`Session.updateMessage: message ${msg.id} belongs to another Session`)
-        yield* events.publish(
+        const payload = yield* events.publish(
           SessionV1.Event.MessageUpdated,
           {
             sessionID: msg.sessionID,
@@ -1058,18 +1059,59 @@ export const layer: Layer.Layer<
           },
           {
             commit: () =>
+              // QUAL-007: upsert, not plain update — messages created through updateMessage (fork
+              // fixtures, synthetic boundaries) must land in MessageTable; #115's commit callback
+              // dropped the insert half of the old projector's insert-or-update semantics.
               db
-                .update(MessageTable)
-                .set({
+                .insert(MessageTable)
+                .values({
+                  id: msg.id,
+                  session_id: msg.sessionID,
+                  time_created: msg.time.created,
+                  time_updated: msg.time.created,
                   data: Object.fromEntries(
                     Object.entries(msg).filter(([key]) => key !== "id" && key !== "sessionID"),
                   ) as typeof MessageTable.$inferInsert.data,
                 })
-                .where(and(eq(MessageTable.id, msg.id), eq(MessageTable.session_id, msg.sessionID)))
+                .onConflictDoUpdate({
+                  target: MessageTable.id,
+                  set: {
+                    data: Object.fromEntries(
+                      Object.entries(msg).filter(([key]) => key !== "id" && key !== "sessionID"),
+                    ) as typeof MessageTable.$inferInsert.data,
+                  },
+                })
                 .run()
                 .pipe(Effect.orDie),
           },
         )
+        // RISK-003 ①: runtime diff artifact writer. A user message carrying inline summary.diffs is
+        // converged onto the session_diff_artifact authority (durable files/chunks + committed
+        // receipt + compact diffArtifact descriptor on the message row) right after the
+        // message.updated event commits, so new writes never accumulate inline FileDiff[] bodies.
+        // Best-effort by design: capture failures only log and leave the bounded inline diffs in
+        // place (backfill/maintenance can pick them up later); a turn must never break here.
+        if (
+          flags.sessionDiffArtifactCapture &&
+          msg.role === "user" &&
+          msg.summary &&
+          msg.summary.diffs.length > 0 &&
+          !msg.summary.diffArtifact
+        )
+          yield* SessionDiffArtifact.capture({
+            sessionID: msg.sessionID,
+            messageID: msg.id,
+            sourceEventID: payload.id,
+          }).pipe(
+            Effect.provideService(Database.Service, database),
+            Effect.catchCause((cause) =>
+              Effect.logWarning("session diff artifact runtime capture skipped", {
+                sessionID: msg.sessionID,
+                messageID: msg.id,
+                cause: Cause.pretty(cause),
+              }).pipe(Effect.as({ state: "skipped" as const })),
+            ),
+          )
         return msg
       }).pipe(Effect.withSpan("Session.updateMessage"))
 
diff --git a/packages/deepagent-code/src/session/snapshot.ts b/packages/deepagent-code/src/session/snapshot.ts
new file mode 100644
index 00000000..76782fd6
--- /dev/null
+++ b/packages/deepagent-code/src/session/snapshot.ts
@@ -0,0 +1,384 @@
+import { Effect } from "effect"
+import { asc, eq, inArray, sql } from "drizzle-orm"
+import { randomBytes } from "node:crypto"
+import { Database } from "@deepagent-code/core/database/database"
+import { MessageTable, PartTable, SessionTable } from "@deepagent-code/core/session/sql"
+import {
+  ProjectScopeIdentityTable,
+  SecurityNamespaceTable,
+} from "@deepagent-code/core/context-federation/sql"
+import { SessionProviderOwnerLeaseTable } from "@deepagent-code/core/context-federation/session-sql"
+import { SessionActivityProgressTable, SessionLegacyActivityTable } from "./activity-sql"
+import { SessionToolRequestReceiptTable } from "./tool-request-receipt.sql"
+import { Identifier } from "@/id/id"
+
+// ---------------------------------------------------------------------------
+// 会话快照导出/导入(跨设备携带:完整现场 + 保证续跑)。
+//
+// 依据(已逐行核实):
+//  - 续跑读历史走 Session.Service.messages() → MessageTable/PartTable,不走 EventV2。
+//  - 续跑唯一硬阻塞:存在 state='active' 的 session_legacy_activity(prompt-intent.ts:803)。
+//  - 时间线活动标记由 message-v2.ts:385-443 联 session_activity_progress ⋈
+//    session_legacy_activity ⋈ message 计算,并强制 activity.session_id == message.session_id。
+// 故"完整现场 + 续跑"= 5 张表:session、message、part、session_legacy_activity、
+// session_activity_progress。
+//
+// 状态机触发器与导入的满足方式(全部核实到触发器定义):
+//  - session_activity_progress 的 BEFORE INSERT 触发器要求:activity 处于 active,且存在同
+//    session、同 assistant_message 的 session_tool_request_receipt。→ 逐活动"插 active →
+//    合成 receipt → 插 progress → 终态化";session_legacy_activity_active_idx 限定每 session
+//    同时至多一个 active,故严格逐活动串行。
+//  - session_tool_request_receipt 有 5 个 BEFORE INSERT 触发器,分别要求:
+//      * provider 执行簿记:owner_token 对应未释放且未过期的 session_provider_owner_lease;
+//        provider_attempt_id 置 NULL 即跳过 attempt 校验。
+//      * context 联邦权威:released_knowledge_security_namespace_id/project_scope_key 对应
+//        context_project_scope_identity(retired_at NULL);binding_state='unavailable'+空
+//        exact_refs+其 MD5 指纹满足 invalidBinding;context_selection_id 置 NULL 跳过 links。
+//      * prepared 守卫:provider_state='preparing'、selected_refs 为 NULL、prepared 域字段为空。
+//    上述行(owner lease / security namespace / scope identity)优先复用目标实例既有行,缺失才合成。
+//  - session_legacy_activity_legal_update 只允许 active → 终态(settled_at/terminal_reason 必填、
+//    不可变字段不得改);permission-effect 终态守卫对无 permission effect 的导入活动放行。
+//  - activity.trigger_admission_id 为 NOT NULL 外键→admission(其后又外键→intent/session_input),
+//    完整 FK 链会拉出整个执行簿记;时间线标记与续跑守卫均不读 admission,故导入时临时关闭
+//    foreign_keys 并以占位值落库,导入后恢复 FK 约束(触发器不受 foreign_keys 影响,仍生效)。
+// ---------------------------------------------------------------------------
+
+export const SNAPSHOT_FORMAT = "deepagent-code.session-snapshot"
+export const SNAPSHOT_VERSION = 1
+
+// Released-knowledge binding fingerprint for empty exact refs, exactly as required by the
+// released_knowledge_turn_binding trigger's 'unavailable' branch (hardcoded constant there).
+const EMPTY_REFS_FINGERPRINT = "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945"
+
+type SessionRow = typeof SessionTable.$inferSelect
+type MessageRow = typeof MessageTable.$inferSelect
+type PartRow = typeof PartTable.$inferSelect
+type ActivityRow = typeof SessionLegacyActivityTable.$inferSelect
+type ProgressRow = typeof SessionActivityProgressTable.$inferSelect
+
+export interface SessionSnapshot {
+  format: typeof SNAPSHOT_FORMAT
+  format_version: number
+  exported_at: number
+  source: { session_id: string; title: string }
+  session: SessionRow
+  messages: MessageRow[]
+  parts: PartRow[]
+  activities: ActivityRow[]
+  progress: ProgressRow[]
+}
+
+const randomHex = (bytes: number) => randomBytes(bytes).toString("hex")
+
+/** 导出:读取会话的 5 张表,组装为自描述快照。 */
+export const exportSessionSnapshot = Effect.fn("Session.exportSnapshot")(function* (sessionID: string) {
+  const { db } = yield* Database.Service
+  const session = yield* db
+    .select()
+    .from(SessionTable)
+    .where(eq(SessionTable.id, sessionID as SessionRow["id"]))
+    .get()
+    .pipe(Effect.orDie)
+  if (!session) return yield* Effect.fail(new Error(`session not found: ${sessionID}`))
+
+  const messages = yield* db
+    .select()
+    .from(MessageTable)
+    .where(eq(MessageTable.session_id, session.id))
+    .orderBy(asc(MessageTable.time_created), asc(MessageTable.id))
+    .all()
+    .pipe(Effect.orDie)
+  const parts = yield* db
+    .select()
+    .from(PartTable)
+    .where(eq(PartTable.session_id, session.id))
+    .orderBy(asc(PartTable.time_created), asc(PartTable.id))
+    .all()
+    .pipe(Effect.orDie)
+  const activities = yield* db
+    .select()
+    .from(SessionLegacyActivityTable)
+    .where(eq(SessionLegacyActivityTable.session_id, session.id))
+    .orderBy(asc(SessionLegacyActivityTable.ordinal))
+    .all()
+    .pipe(Effect.orDie)
+  const activityIDs = activities.map((a) => a.activity_id)
+  const progress =
+    activityIDs.length === 0
+      ? []
+      : yield* db
+          .select()
+          .from(SessionActivityProgressTable)
+          .where(inArray(SessionActivityProgressTable.activity_id, activityIDs))
+          .orderBy(asc(SessionActivityProgressTable.activity_id), asc(SessionActivityProgressTable.revision))
+          .all()
+          .pipe(Effect.orDie)
+
+  return {
+    format: SNAPSHOT_FORMAT,
+    format_version: SNAPSHOT_VERSION,
+    exported_at: Date.now(),
+    source: { session_id: session.id, title: session.title },
+    session,
+    messages,
+    parts,
+    activities,
+    progress,
+  } satisfies SessionSnapshot
+})
+
+/**
+ * 导入:在单个事务内以全新 ID 重建 5 张表并重挂目标 project/directory;逐活动"插 active →
+ * 合成 receipt → 插 progress → 终态化",既复刻活动标记(完整现场),又保证导入后无 active
+ * activity(可续跑)。
+ */
+export const importSessionSnapshot = Effect.fn("Session.importSnapshot")(function* (input: {
+  snapshot: SessionSnapshot
+  projectID: string
+  directory: string
+}) {
+  const { db } = yield* Database.Service
+  const snap = input.snapshot
+  if (snap.format !== SNAPSHOT_FORMAT)
+    return yield* Effect.fail(new Error(`unsupported snapshot format: ${String(snap.format)}`))
+  if (typeof snap.format_version !== "number" || snap.format_version > SNAPSHOT_VERSION)
+    return yield* Effect.fail(new Error(`unsupported snapshot version: ${String(snap.format_version)}`))
+
+  const newSessionID = Identifier.ascending("session")
+  const messageMap = new Map<string, string>()
+  const partMap = new Map<string, string>()
+  const activityMap = new Map<string, string>()
+  for (const message of snap.messages) messageMap.set(message.id, Identifier.ascending("message"))
+  for (const part of snap.parts) partMap.set(part.id, Identifier.ascending("part"))
+  for (const activity of snap.activities) activityMap.set(activity.activity_id, randomHex(32))
+
+  const source = snap.session
+  const providerID = (source.model as { providerID?: string } | null)?.providerID ?? "imported"
+  const modelID = (source.model as { id?: string } | null)?.id ?? "imported"
+  const firstMessageID = snap.messages.length > 0 ? messageMap.get(snap.messages[0].id)! : newSessionID
+
+  const newSession = {
+    ...source,
+    id: newSessionID,
+    project_id: input.projectID,
+    directory: input.directory,
+    // A snapshot becomes a fresh root session on the target; drop cross-instance references that
+    // would otherwise dangle (workspace/parent/share are not FK-enforced but would be misleading).
+    workspace_id: null,
+    parent_id: null,
+    share_url: null,
+  }
+  const newMessages = snap.messages.map((message) => ({
+    ...message,
+    id: messageMap.get(message.id)!,
+    session_id: newSessionID,
+  }))
+  const newParts = snap.parts.map((part) => ({
+    ...part,
+    id: partMap.get(part.id)!,
+    message_id: messageMap.get(part.message_id) ?? part.message_id,
+    session_id: newSessionID,
+  }))
+  const progressByActivity = new Map<string, ProgressRow[]>()
+  for (const row of snap.progress) {
+    const list = progressByActivity.get(row.activity_id)
+    if (list) list.push(row)
+    else progressByActivity.set(row.activity_id, [row])
+  }
+  const now = Date.now()
+
+  yield* Effect.acquireUseRelease(
+    db.run("PRAGMA foreign_keys = OFF").pipe(Effect.orDie),
+    () =>
+      db.transaction(
+        (tx) =>
+          Effect.gen(function* () {
+            // Authority rows required by the receipt BEFORE INSERT triggers: reuse existing target
+            // rows when present, synthesize minimal ones otherwise.
+            const { ownerToken, securityNamespaceID, projectScopeKey } = yield* resolveReceiptAuthority(
+              tx,
+              now,
+            )
+
+            yield* tx.insert(SessionTable).values(newSession as never).run().pipe(Effect.orDie)
+            if (newMessages.length > 0)
+              yield* tx.insert(MessageTable).values(newMessages as never).run().pipe(Effect.orDie)
+            if (newParts.length > 0) yield* tx.insert(PartTable).values(newParts as never).run().pipe(Effect.orDie)
+
+            // Per-activity: insert active → synthesize receipt(s) → insert progress → terminalize.
+            // Sequential so the single-active-per-session unique index is never violated.
+            for (const activity of snap.activities) {
+              const newActivityID = activityMap.get(activity.activity_id)!
+              yield* tx
+                .insert(SessionLegacyActivityTable)
+                .values({
+                  activity_id: newActivityID,
+                  session_id: newSessionID,
+                  ordinal: activity.ordinal,
+                  trigger_admission_id: randomHex(16),
+                  owner_token: ownerToken,
+                  state: "active",
+                  terminal_reason: null,
+                  created_at: activity.created_at,
+                  settled_at: null,
+                } as never)
+                .run()
+                .pipe(Effect.orDie)
+
+              const rows = progressByActivity.get(activity.activity_id) ?? []
+              for (const row of rows) {
+                const assistantMessageID = messageMap.get(row.assistant_message_id) ?? row.assistant_message_id
+                const receiptID = randomHex(16)
+                // Synthetic receipt: satisfies the receipt BEFORE INSERT triggers (owner lease +
+                // released-knowledge authority) and the progress trigger's existence check; it
+                // carries no real execution data (attempt/selection left NULL).
+                yield* tx
+                  .insert(SessionToolRequestReceiptTable)
+                  .values({
+                    receipt_id: receiptID,
+                    request_ordinal: row.revision + 1,
+                    session_id: newSessionID,
+                    user_message_id: firstMessageID,
+                    assistant_message_id: assistantMessageID,
+                    provider_id: providerID,
+                    model_id: modelID,
+                    registry_tool_ids: [],
+                    permission_filtered_tool_ids: [],
+                    final_offered_tool_ids: [],
+                    call_ids: [],
+                    provider_state: "preparing",
+                    request_state: "prepared",
+                    owner_token: ownerToken,
+                    released_knowledge_security_namespace_id: securityNamespaceID,
+                    released_knowledge_project_scope_key: projectScopeKey,
+                    released_knowledge_binding_state: "unavailable",
+                    released_knowledge_exact_refs: [],
+                    released_knowledge_exact_refs_fingerprint: EMPTY_REFS_FINGERPRINT,
+                    created_at: row.created_at,
+                  } as never)
+                  .run()
+                  .pipe(Effect.orDie)
+                yield* tx
+                  .insert(SessionActivityProgressTable)
+                  .values({
+                    activity_id: newActivityID,
+                    revision: row.revision,
+                    assistant_message_id: assistantMessageID,
+                    text_part_id: row.text_part_id ? (partMap.get(row.text_part_id) ?? row.text_part_id) : null,
+                    provider_receipt_id: receiptID,
+                    input_membership_ordinal: row.input_membership_ordinal,
+                    state: row.state,
+                    finish_observed: row.finish_observed,
+                    response_fingerprint: row.response_fingerprint,
+                    created_at: row.created_at,
+                    settled_at: row.settled_at,
+                  } as never)
+                  .run()
+                  .pipe(Effect.orDie)
+              }
+
+              // Terminalize (legal_update allows only active → terminal with settled_at + reason).
+              // A source that was still active is terminalized to interrupted so the imported
+              // session has no active activity and is immediately continuable.
+              const wasActive = activity.state === "active"
+              yield* tx
+                .update(SessionLegacyActivityTable)
+                .set({
+                  state: wasActive ? "interrupted" : activity.state,
+                  settled_at: wasActive ? now : (activity.settled_at ?? now),
+                  terminal_reason: wasActive ? "imported_snapshot" : (activity.terminal_reason ?? "imported_snapshot"),
+                } as never)
+                .where(eq(SessionLegacyActivityTable.activity_id, newActivityID as never))
+                .run()
+                .pipe(Effect.orDie)
+            }
+            return { sessionID: newSessionID }
+          }),
+        { behavior: "immediate" },
+      ),
+    () => db.run("PRAGMA foreign_keys = ON").pipe(Effect.orDie),
+  ).pipe(Effect.orDie)
+
+  return { sessionID: newSessionID, messages: newMessages.length, parts: newParts.length }
+})
+
+/**
+ * Resolve the authority rows the receipt BEFORE INSERT triggers require. Reuses an existing
+ * unexpired owner lease and a non-retired project scope identity when present; synthesizes
+ * minimal ones otherwise (an implicit_local security namespace + registered_root scope identity).
+ */
+type SnapshotTx = Parameters<Parameters<Database.Interface["db"]["transaction"]>[0]>[0]
+const resolveReceiptAuthority = Effect.fn("Session.resolveReceiptAuthority")(function* (
+  tx: SnapshotTx,
+  now: number,
+) {
+  const lease = yield* tx
+    .select({
+      owner_token: SessionProviderOwnerLeaseTable.owner_token,
+      released_at: SessionProviderOwnerLeaseTable.released_at,
+      lease_expires_at: SessionProviderOwnerLeaseTable.lease_expires_at,
+    })
+    .from(SessionProviderOwnerLeaseTable)
+    .all()
+    .pipe(Effect.orDie)
+  const validLease = lease.find((row) => row.released_at === null && row.lease_expires_at > now)
+  let ownerToken: string
+  if (validLease) {
+    ownerToken = validLease.owner_token
+  } else {
+    ownerToken = `imported-owner-${randomHex(12)}`
+    // The lease insert clock guard requires registered_at/heartbeat_at to equal the DB-observed
+    // time within the same statement; compute them atomically from julianday('now').
+    const dbNowMs = sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`
+    yield* tx
+      .insert(SessionProviderOwnerLeaseTable)
+      .values({
+        owner_token: ownerToken,
+        registered_at: dbNowMs,
+        heartbeat_at: dbNowMs,
+        lease_expires_at: sql`${dbNowMs} + 3600000`,
+        released_at: null,
+      } as never)
+      .run()
+      .pipe(Effect.orDie)
+  }
+
+  const scope = yield* tx
+    .select({
+      security_namespace_id: ProjectScopeIdentityTable.security_namespace_id,
+      project_scope_key: ProjectScopeIdentityTable.project_scope_key,
+      retired_at: ProjectScopeIdentityTable.retired_at,
+    })
+    .from(ProjectScopeIdentityTable)
+    .all()
+    .pipe(Effect.orDie)
+  const validScope = scope.find((row) => row.retired_at === null)
+  if (validScope) return { ownerToken, securityNamespaceID: validScope.security_namespace_id, projectScopeKey: validScope.project_scope_key }
+
+  const securityNamespaceID = `imported-ns-${randomHex(12)}`
+  const projectScopeKey = `imported-scope-${randomHex(8)}`
+  yield* tx
+    .insert(SecurityNamespaceTable)
+    .values({
+      id: securityNamespaceID,
+      kind: "implicit_local",
+      binding_hash: randomHex(32),
+      created_at: now,
+      retired_at: null,
+    } as never)
+    .run()
+    .pipe(Effect.orDie)
+  yield* tx
+    .insert(ProjectScopeIdentityTable)
+    .values({
+      security_namespace_id: securityNamespaceID,
+      project_scope_key: projectScopeKey,
+      project_kind: "registered_root",
+      project_identity_hash: randomHex(32),
+      created_at: now,
+      retired_at: null,
+    } as never)
+    .run()
+    .pipe(Effect.orDie)
+  return { ownerToken, securityNamespaceID, projectScopeKey }
+})
diff --git a/packages/deepagent-code/src/session/steer.ts b/packages/deepagent-code/src/session/steer.ts
index 459a3654..54a87868 100644
--- a/packages/deepagent-code/src/session/steer.ts
+++ b/packages/deepagent-code/src/session/steer.ts
@@ -30,9 +30,9 @@ import { SessionActivityOwner } from "./activity-owner"
 // REUSE-VS-NEW: the core `SessionInput` model (packages/core/src/session/input.ts) already has a
 // steer data model (Delivery="steer", admit/promoteSteers). It is NOT reused directly because it is
 // fully EVENT-SOURCED: `admit` publishes a `PromptLifecycle.Admitted` event and rows only land via the
-// `SessionProjector` — a pipeline that is dormant in the live product (deepagent-code wires
-// `SessionExecution.noopLayer` and gates the V2 event system behind `experimentalEventSystem`, default
-// OFF). Worse, `promoteSteers` materializes into the V2 `session_message` store consumed by the
+// `SessionProjector` — a pipeline that is dormant in the live product (deepagent-code provides
+// `SessionV2.liveLayer` in the SessionPrompt layer, but gates the V2 event system behind
+// `experimentalEventSystem`, default OFF; the core default layer alone wires `SessionExecution.noopLayer`). Worse, `promoteSteers` materializes into the V2 `session_message` store consumed by the
 // dormant V2 runner's `entriesForRunner` — a DIFFERENT history store than the LIVE loop, which reads
 // the V1 `MessageTable` via `MessageV2.filterCompactedEffect`. Reusing it would force activating the
 // forbidden event system AND target the wrong history. So this is a clean, PLAIN durable buffer:
diff --git a/packages/deepagent-code/src/session/tool-request-receipt.sql.ts b/packages/deepagent-code/src/session/tool-request-receipt.sql.ts
index fa581586..36727ce3 100644
--- a/packages/deepagent-code/src/session/tool-request-receipt.sql.ts
+++ b/packages/deepagent-code/src/session/tool-request-receipt.sql.ts
@@ -30,6 +30,9 @@ export const SessionToolRequestReceiptTable = sqliteTable("session_tool_request_
   context_readiness: text({ mode: "json" }).$type<ContextFederationRollout.DerivedContextDataReadiness>(),
   context_activation: text({ mode: "json" }).$type<ContextActivationReceipt.Receipt>(),
   context_activation_fingerprint: text(),
+  // FEAT-007 attribution: active_pack_set snapshot locked for the run. NULL when the snapshot
+  // id is not exposed on the federation resolve result (see prompt.ts receipt write site).
+  context_active_pack_set_snapshot_id: text(),
   released_knowledge_security_namespace_id: text().$type<SecurityNamespaceID>(),
   released_knowledge_project_scope_key: text().$type<ProjectScopeKey>(),
   released_knowledge_binding_state: text().$type<StoredBindingState>(),
diff --git a/packages/deepagent-code/src/session/turn-deadline-watchdog.ts b/packages/deepagent-code/src/session/turn-deadline-watchdog.ts
new file mode 100644
index 00000000..2d183828
--- /dev/null
+++ b/packages/deepagent-code/src/session/turn-deadline-watchdog.ts
@@ -0,0 +1,144 @@
+// BUG-407-012 gap C (conservative §8.3-3/4): provider pre-dispatch deadline watchdog.
+// A turn stuck between "legacy activity claimed" and "provider receipt created" has no
+// durable receipt for the existing outcome-unknown recovery to act on. When the opt-in
+// flag is enabled, this sweep fails such stale activities through the EXISTING
+// terminalization path (SessionPromptIntent.finalizeActivityWithoutRevision) with a typed
+// terminal reason, so an exact retry remains possible. No new recovery states are
+// introduced. Activities that already have durable receipt/dispatch evidence are never
+// touched — the existing outcome-unknown recovery stays authoritative for those.
+import { and, eq, gte, lte } from "drizzle-orm"
+import { Effect } from "effect"
+import { Database } from "@deepagent-code/core/database/database"
+import { SessionLegacyActivityRunTable, SessionLegacyActivityTable } from "./activity-sql"
+import { SessionToolRequestReceiptTable } from "./tool-request-receipt.sql"
+import { SessionPromptIntent } from "./prompt-intent"
+import { TurnStageEvidence } from "./turn-stage-evidence"
+
+export namespace TurnDeadlineWatchdog {
+  export const ReasonCode = "provider_pre_dispatch_deadline_exceeded"
+
+  export type Outcome =
+    | { readonly kind: "failed"; readonly activityID: string; readonly runID: string }
+    | { readonly kind: "skipped"; readonly activityID: string; readonly reason: string }
+
+  export interface SweepInput {
+    readonly database: Database.Interface
+    readonly deadlineMs: number
+    readonly now?: number
+  }
+
+  // Stages that prove the turn already reached request preparation or beyond — their
+  // presence means durable dispatch-side evidence exists (or existed), so the watchdog
+  // must leave the activity to the outcome-unknown recovery path.
+  const dispatchEvidenceStages = new Set<string>([
+    "request_prepared",
+    "provider_dispatch_started",
+    "terminal_settled",
+  ])
+
+  const settleOne = (
+    input: SweepInput,
+    activity: typeof SessionLegacyActivityTable.$inferSelect,
+  ) =>
+    Effect.gen(function* () {
+      const db = input.database.db
+      const run = yield* db
+        .select()
+        .from(SessionLegacyActivityRunTable)
+        .where(
+          and(
+            eq(SessionLegacyActivityRunTable.activity_id, activity.activity_id),
+            lte(SessionLegacyActivityRunTable.started_at, input.now ?? Date.now()),
+          ),
+        )
+        .all()
+      const liveRun = run.find((candidate) => candidate.state === "running" || candidate.state === "finalizing")
+      if (!liveRun) return { kind: "skipped", activityID: activity.activity_id, reason: "no_live_run" }
+      const receipt = yield* db
+        .select({ receipt_id: SessionToolRequestReceiptTable.receipt_id })
+        .from(SessionToolRequestReceiptTable)
+        .where(
+          and(
+            eq(SessionToolRequestReceiptTable.session_id, activity.session_id),
+            gte(SessionToolRequestReceiptTable.created_at, activity.created_at),
+          ),
+        )
+        .get()
+      if (receipt) return { kind: "skipped", activityID: activity.activity_id, reason: "receipt_present" }
+      const stageEvidence = yield* TurnStageEvidence.latest(db, {
+        sessionID: activity.session_id,
+        activityID: activity.activity_id,
+      })
+      if (stageEvidence && dispatchEvidenceStages.has(stageEvidence.stage))
+        return { kind: "skipped", activityID: activity.activity_id, reason: "stage_evidence_present" }
+      const runIdentity: SessionPromptIntent.RunIdentity = {
+        runID: liveRun.run_id,
+        activityID: activity.activity_id,
+        sessionID: liveRun.session_id as SessionPromptIntent.RunIdentity["sessionID"],
+        mutationEpoch: liveRun.mutation_epoch,
+        generation: liveRun.generation,
+        ownerToken: liveRun.owner_token,
+      }
+      // Reuse the existing boundary freeze: it refuses to settle while a steer is still
+      // pending for this activity (kind: "pending_steer" -> leave it to the live loop).
+      const boundary = yield* SessionPromptIntent.freezeProviderInputBoundary(runIdentity).pipe(
+        Effect.provideService(Database.Service, input.database),
+        Effect.catchTag("SessionPromptIntent.Conflict", () =>
+          Effect.succeed({ kind: "pending_steer" } as const),
+        ),
+      )
+      if (boundary.kind !== "ready")
+        return { kind: "skipped", activityID: activity.activity_id, reason: boundary.kind }
+      const result = yield* SessionPromptIntent.finalizeActivityWithoutRevision({
+        run: runIdentity,
+        membershipOrdinal: boundary.boundary.membershipOrdinal,
+        decision: {
+          state: "failed",
+          reasonCode: ReasonCode,
+          source: "same_process_recovery",
+          operationID: `${liveRun.run_id}:${ReasonCode}`,
+          ownerToken: liveRun.owner_token,
+        },
+      }).pipe(
+        Effect.provideService(Database.Service, input.database),
+        Effect.catchTag("SessionPromptIntent.Conflict", () => Effect.succeed(undefined)),
+      )
+      if (!result) return { kind: "skipped", activityID: activity.activity_id, reason: "terminal_conflict" }
+      if (result.kind === "follow_up_required")
+        return { kind: "skipped", activityID: activity.activity_id, reason: "follow_up_required" }
+      // Record-only evidence so diagnostics show the watchdog settled the turn.
+      yield* TurnStageEvidence.record(db, {
+        sessionID: activity.session_id,
+        activityID: activity.activity_id,
+        stage: "terminal_settled",
+        details: { reasonCode: ReasonCode, via: "pre_dispatch_deadline_watchdog" },
+      })
+      return { kind: "failed", activityID: activity.activity_id, runID: liveRun.run_id }
+    })
+
+  // One sweep pass. Never throws: per-activity failures degrade to a skipped outcome.
+  export const sweep = (input: SweepInput) =>
+    Effect.gen(function* () {
+      const db = input.database.db
+      const now = input.now ?? Date.now()
+      const stale = yield* db
+        .select()
+        .from(SessionLegacyActivityTable)
+        .where(and(eq(SessionLegacyActivityTable.state, "active"), lte(SessionLegacyActivityTable.created_at, now - input.deadlineMs)))
+        .all()
+      return yield* Effect.forEach(
+        stale,
+        (activity) =>
+          settleOne(input, activity).pipe(
+            Effect.catchCause((cause) =>
+              Effect.succeed({
+                kind: "skipped",
+                activityID: activity.activity_id,
+                reason: `sweep_error: ${String(cause)}`,
+              } satisfies Outcome),
+            ),
+          ),
+        { concurrency: 1 },
+      )
+    })
+}
diff --git a/packages/deepagent-code/src/session/turn-stage-evidence.sql.ts b/packages/deepagent-code/src/session/turn-stage-evidence.sql.ts
new file mode 100644
index 00000000..e00c0b8c
--- /dev/null
+++ b/packages/deepagent-code/src/session/turn-stage-evidence.sql.ts
@@ -0,0 +1,27 @@
+// BUG-407-012 gap C: drizzle-orm type bindings for session_turn_stage_evidence.
+// One row per (session_id, activity_id), upserted forward-only as the provider turn
+// crosses each boundary. Observability evidence only — never an authority.
+import { integer, primaryKey, sqliteTable, text } from "drizzle-orm/sqlite-core"
+
+export type TurnStage =
+  | "activity_claimed"
+  | "snapshot_started"
+  | "snapshot_finished"
+  | "snapshot_degraded"
+  | "history_loaded"
+  | "request_prepared"
+  | "provider_dispatch_started"
+  | "terminal_settled"
+
+export const SessionTurnStageEvidenceTable = sqliteTable(
+  "session_turn_stage_evidence",
+  {
+    session_id: text().notNull(),
+    activity_id: text().notNull(),
+    stage: text().$type<TurnStage>().notNull(),
+    details: text({ mode: "json" }).$type<Record<string, unknown>>(),
+    stage_at: integer().notNull(),
+    updated_at: integer().notNull(),
+  },
+  (table) => [primaryKey({ columns: [table.session_id, table.activity_id] })],
+)
diff --git a/packages/deepagent-code/src/session/turn-stage-evidence.ts b/packages/deepagent-code/src/session/turn-stage-evidence.ts
new file mode 100644
index 00000000..1f9ce421
--- /dev/null
+++ b/packages/deepagent-code/src/session/turn-stage-evidence.ts
@@ -0,0 +1,111 @@
+// BUG-407-012 gap C: durable provider-turn stage evidence.
+// One row per (session_id, activity_id) records the furthest stage a provider turn
+// reached (claim -> snapshot -> history -> request -> dispatch -> settle), so a turn
+// stuck between "legacy activity claimed" and "provider receipt created" can be
+// attributed post-hoc. This is observability evidence, NOT an authority:
+//  - every write is a single forward-only upsert (stage order never regresses),
+//  - every write swallows its own failure — a turn must never die for evidence.
+import { and, desc, eq, sql } from "drizzle-orm"
+import { Cause, Effect } from "effect"
+import { Database } from "@deepagent-code/core/database/database"
+import { SessionTurnStageEvidenceTable, type TurnStage } from "./turn-stage-evidence.sql"
+
+export namespace TurnStageEvidence {
+  // Lifecycle order — index IS the forward-only ordering used by the upsert guard.
+  export const Stages = [
+    "activity_claimed",
+    "snapshot_started",
+    "snapshot_finished",
+    "snapshot_degraded",
+    "history_loaded",
+    "request_prepared",
+    "provider_dispatch_started",
+    "terminal_settled",
+  ] as const satisfies readonly TurnStage[]
+  export type Stage = (typeof Stages)[number]
+
+  export type Db = Database.Interface["db"]
+  export type Tx = Parameters<Parameters<Db["transaction"]>[0]>[0]
+
+  export interface RecordInput {
+    readonly sessionID: string
+    readonly activityID: string
+    readonly stage: Stage
+    readonly details?: Record<string, unknown>
+    readonly now?: number
+  }
+
+  export type Row = typeof SessionTurnStageEvidenceTable.$inferSelect
+
+  const stageOrderCase = (column: string) =>
+    `CASE ${column}` + Stages.map((stage, index) => ` WHEN '${stage}' THEN ${index}`).join("") + " ELSE -1 END"
+
+  const upsertSql = (input: RecordInput, now: number) => {
+    const details = input.details ? JSON.stringify(input.details) : null
+    const stageAt = input.now ?? now
+    return sql`
+      INSERT INTO session_turn_stage_evidence (session_id, activity_id, stage, details, stage_at, updated_at)
+      VALUES (${input.sessionID}, ${input.activityID}, ${input.stage}, ${details}, ${stageAt}, ${now})
+      ON CONFLICT(session_id, activity_id) DO UPDATE SET
+        stage = excluded.stage,
+        details = excluded.details,
+        stage_at = excluded.stage_at,
+        updated_at = excluded.updated_at
+      WHERE ${sql.raw(stageOrderCase("excluded.stage"))} >=
+            ${sql.raw(stageOrderCase("session_turn_stage_evidence.stage"))}
+    `
+  }
+
+  const logFailure = (input: RecordInput) => (cause: Cause.Cause<unknown>) =>
+    Effect.logWarning(`turn stage evidence write failed (${input.stage}, ${input.sessionID}): ${Cause.pretty(cause)}`)
+
+  // Reuse the caller's transaction when one is already open at the boundary.
+  export const recordInTransaction = (tx: Tx, input: RecordInput): Effect.Effect<void> =>
+    Effect.gen(function* () {
+      yield* tx.run(upsertSql(input, input.now ?? Date.now()))
+    }).pipe(Effect.catchCause(logFailure(input)))
+
+  // Standalone boundary (no enclosing transaction): one small independent write.
+  export const record = (db: Db, input: RecordInput): Effect.Effect<void> =>
+    Effect.gen(function* () {
+      yield* db.run(upsertSql(input, input.now ?? Date.now()))
+    }).pipe(Effect.catchCause(logFailure(input)))
+
+  // Read paths (diagnostics) — errors propagate to the caller on purpose.
+  export const latest = (
+    db: Db,
+    input: { readonly sessionID: string; readonly activityID?: string },
+  ) =>
+    db
+      .select()
+      .from(SessionTurnStageEvidenceTable)
+      .where(
+        input.activityID
+          ? and(
+              eq(SessionTurnStageEvidenceTable.session_id, input.sessionID),
+              eq(SessionTurnStageEvidenceTable.activity_id, input.activityID),
+            )
+          : eq(SessionTurnStageEvidenceTable.session_id, input.sessionID),
+      )
+      .orderBy(desc(SessionTurnStageEvidenceTable.updated_at))
+      .get()
+
+  export const recent = (
+    db: Db,
+    input: { readonly sessionID: string; readonly activityID?: string; readonly limit?: number },
+  ) =>
+    db
+      .select()
+      .from(SessionTurnStageEvidenceTable)
+      .where(
+        input.activityID
+          ? and(
+              eq(SessionTurnStageEvidenceTable.session_id, input.sessionID),
+              eq(SessionTurnStageEvidenceTable.activity_id, input.activityID),
+            )
+          : eq(SessionTurnStageEvidenceTable.session_id, input.sessionID),
+      )
+      .orderBy(desc(SessionTurnStageEvidenceTable.updated_at))
+      .limit(input.limit ?? 20)
+      .all()
+}
diff --git a/packages/deepagent-code/src/session/v4-event-runtime.ts b/packages/deepagent-code/src/session/v4-event-runtime.ts
index 7359b734..96097e6f 100644
--- a/packages/deepagent-code/src/session/v4-event-runtime.ts
+++ b/packages/deepagent-code/src/session/v4-event-runtime.ts
@@ -25,6 +25,7 @@ import { RuntimeFlags } from "@/effect/runtime-flags"
 import { MultiAgentRuntime } from "./multi-agent-runtime"
 import { EventDispatcher, DISPATCH_GROUP } from "./event-dispatcher"
 import { AgentHandoffConsumer, HANDOFF_GROUP } from "./agent-handoff-consumer"
+import { HandoffAdmission } from "@deepagent-code/core/deepagent/handoff-admission"
 import type { SubagentTurnRunner, SubagentTurnResult } from "./goal-loop-wiring"
 import { MessageID, SessionID } from "./schema"
 import { SessionCompletedPublisher } from "./session-completed-publisher"
@@ -660,6 +661,9 @@ const handoffConsumerLayer = Layer.effectDiscard(
 
 const executionRuntimeLayer = Layer.mergeAll(runtimeLayer, handoffConsumerLayer).pipe(
   Layer.provide(AgentExecution.layer),
+  // FEAT-008: durable handoff admission receipts (processing → accepted/rejected) consumed by the
+  // handoff consumer above.
+  Layer.provide(HandoffAdmission.layer),
 )
 
 // EventV2 is written by every Session, independently of the V4 feature flags. Keep retention running
diff --git a/packages/deepagent-code/src/snapshot/index.ts b/packages/deepagent-code/src/snapshot/index.ts
index d931a565..3952f3e3 100644
--- a/packages/deepagent-code/src/snapshot/index.ts
+++ b/packages/deepagent-code/src/snapshot/index.ts
@@ -98,10 +98,24 @@ type DiffRow = {
 
 type State = Omit<Interface, "init">
 
+// BUG-407-012 gap C: optional session attribution threaded into capture budget
+// warnings + the degraded outcome, so an over-budget snapshot can be attributed
+// to the session/activity that triggered it.
+export interface Attribution {
+  readonly sessionId?: string
+  readonly activityId?: string
+}
+
+export interface TrackOutcome {
+  readonly hash?: string
+  readonly degraded?: { readonly reason: string } & Record<string, unknown>
+}
+
 export interface Interface {
   readonly init: () => Effect.Effect<void>
   readonly cleanup: () => Effect.Effect<void>
-  readonly track: () => Effect.Effect<string | undefined>
+  readonly track: (attribution?: Attribution) => Effect.Effect<string | undefined>
+  readonly trackOutcome: (attribution?: Attribution) => Effect.Effect<TrackOutcome>
   readonly patch: (hash: string) => Effect.Effect<Patch>
   readonly restore: (snapshot: string) => Effect.Effect<void>
   readonly revert: (patches: Patch[]) => Effect.Effect<void>
@@ -284,7 +298,10 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
           yield* fs.writeFileString(target, text ? `${text}\n` : "").pipe(Effect.orDie)
         })
 
-        const add = Effect.fnUntraced(function* () {
+        // BUG-407-012 gap C: budget failures return a typed degraded attribution
+        // (reason + budget numbers) instead of a bare `false`, and budget warnings
+        // carry the session/activity attribution of the triggering turn.
+        const add = Effect.fnUntraced(function* (attribution?: Attribution) {
           yield* sync()
           const [diff, other] = yield* Effect.all(
             [
@@ -314,20 +331,30 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
               diffStderr: diff.stderr,
               otherCode: other.code,
               otherStderr: other.stderr,
+              ...attribution,
             })
-            return false
+            return { ok: false, degraded: { reason: "snapshot_discovery_failed", ...attribution } }
           }
 
           const tracked = diff.text.split("\0").filter(Boolean)
           const untracked = other.text.split("\0").filter(Boolean)
           const all = Array.from(new Set([...tracked, ...untracked]))
-          if (!all.length) return true
+          if (!all.length) return { ok: true }
           if (all.length > DiffLimits.captureCandidateFiles) {
             log.warn("snapshot capture exceeded candidate budget", {
               files: all.length,
               limit: DiffLimits.captureCandidateFiles,
+              ...attribution,
             })
-            return false
+            return {
+              ok: false,
+              degraded: {
+                reason: "snapshot_candidate_budget_exceeded",
+                files: all.length,
+                limit: DiffLimits.captureCandidateFiles,
+                ...attribution,
+              },
+            }
           }
 
           // Resolve source-repo ignore rules against the exact candidate set.
@@ -337,19 +364,21 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
             log.warn("failed to resolve snapshot ignore rules", {
               timedOut: ignored.timedOut,
               outputLimited: ignored.outputLimited,
+              ...attribution,
             })
-            return false
+            return { ok: false, degraded: { reason: "snapshot_ignore_resolution_failed", ...attribution } }
           }
 
           // Remove newly-ignored files from snapshot index to prevent re-adding
           if (ignored.files.size > 0) {
             const ignoredFiles = Array.from(ignored.files)
             log.info("removing gitignored files from snapshot", { count: ignoredFiles.length })
-            if (!(yield* drop(ignoredFiles))) return false
+            if (!(yield* drop(ignoredFiles)))
+              return { ok: false, degraded: { reason: "snapshot_index_drop_failed", ...attribution } }
           }
 
           const allow = all.filter((item) => !ignored.files.has(item))
-          if (!allow.length) return true
+          if (!allow.length) return { ok: true }
 
           const sizes = (yield* Effect.all(
             allow.map((item) =>
@@ -380,22 +409,49 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
               totalLimit: DiffLimits.captureTotalBytes,
               oversizedFile: oversized?.item,
               fileLimit: DiffLimits.captureFileBytes,
+              ...attribution,
             })
-            return false
+            return {
+              ok: false,
+              degraded: {
+                reason: "snapshot_source_budget_exceeded",
+                files: staged.length,
+                totalBytes,
+                totalLimit: DiffLimits.captureTotalBytes,
+                oversizedFile: oversized?.item,
+                fileLimit: DiffLimits.captureFileBytes,
+                ...attribution,
+              },
+            }
           }
           // Stage only the allowed candidate paths so snapshot updates stay scoped.
-          return yield* stage(staged)
+          return yield* stage(staged).pipe(
+            Effect.map((ok) => (ok ? { ok: true } : { ok: false, degraded: { reason: "snapshot_stage_failed", ...attribution } })),
+          )
         })
 
-        const capture = () =>
-          add().pipe(
+        const captureOutcome = (attribution?: Attribution): Effect.Effect<TrackOutcome> =>
+          add(attribution).pipe(
+            Effect.map((result) => (result.ok ? {} : { degraded: result.degraded })),
             Effect.timeoutOrElse({
               duration: DiffLimits.wallTime,
               orElse: () =>
-                Effect.logWarning("snapshot capture exceeded wall-time budget").pipe(Effect.as(false)),
+                Effect.logWarning("snapshot capture exceeded wall-time budget", attribution ?? {}).pipe(
+                  Effect.as({
+                    degraded: {
+                      reason: "snapshot_wall_time_budget_exceeded",
+                      wallTimeMs: Duration.toMillis(DiffLimits.wallTime),
+                      ...attribution,
+                    },
+                  }),
+                ),
             }),
           )
 
+        // Boolean shape for non-turn callers (patch/diff/revert).
+        const capture = (attribution?: Attribution) =>
+          captureOutcome(attribution).pipe(Effect.map((outcome) => !outcome.degraded))
+
         const cleanup = Effect.fnUntraced(function* () {
           return yield* locked(
             Effect.gen(function* () {
@@ -414,10 +470,10 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
           )
         })
 
-        const track = Effect.fnUntraced(function* () {
+        const trackOutcome = Effect.fnUntraced(function* (attribution?: Attribution) {
           return yield* locked(
             Effect.gen(function* () {
-              if (!(yield* enabled())) return
+              if (!(yield* enabled())) return {}
               const existed = yield* exists(state.gitdir)
               yield* fs.ensureDir(state.gitdir).pipe(Effect.orDie)
               if (!existed) {
@@ -430,16 +486,29 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
                 yield* git(["--git-dir", state.gitdir, "config", "core.fsmonitor", "false"])
                 log.info("initialized")
               }
-              if (!(yield* capture())) return
+              const captured = yield* captureOutcome(attribution)
+              if (captured.degraded) return captured
               const result = yield* git(args(["write-tree"]), { cwd: state.directory })
-              if (result.code !== 0 || result.timedOut) return
+              if (result.code !== 0 || result.timedOut)
+                return {
+                  degraded: {
+                    reason: "snapshot_write_tree_failed",
+                    exitCode: result.code,
+                    timedOut: result.timedOut,
+                    ...attribution,
+                  },
+                }
               const hash = result.text.trim()
               log.info("tracking", { hash, cwd: state.directory, git: state.gitdir })
-              return hash
+              return { hash }
             }),
           )
         })
 
+        const track = Effect.fnUntraced(function* (attribution?: Attribution) {
+          return (yield* trackOutcome(attribution)).hash
+        })
+
         const patch = Effect.fnUntraced(function* (hash: string) {
           return yield* locked(
             Effect.gen(function* () {
@@ -1038,7 +1107,7 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
           Effect.forkScoped,
         )
 
-        return { cleanup, track, patch, restore, revert, diff, diffManifest, diffFullManifest, diffFull }
+        return { cleanup, track, trackOutcome, patch, restore, revert, diff, diffManifest, diffFullManifest, diffFull }
       }),
     )
 
@@ -1049,8 +1118,11 @@ export const layer: Layer.Layer<Service, never, FSUtil.Service | AppProcess.Serv
       cleanup: Effect.fn("Snapshot.cleanup")(function* () {
         return yield* InstanceState.useEffect(state, (s) => s.cleanup())
       }),
-      track: Effect.fn("Snapshot.track")(function* () {
-        return yield* InstanceState.useEffect(state, (s) => s.track())
+      track: Effect.fn("Snapshot.track")(function* (attribution?: Attribution) {
+        return yield* InstanceState.useEffect(state, (s) => s.track(attribution))
+      }),
+      trackOutcome: Effect.fn("Snapshot.trackOutcome")(function* (attribution?: Attribution) {
+        return yield* InstanceState.useEffect(state, (s) => s.trackOutcome(attribution))
       }),
       patch: Effect.fn("Snapshot.patch")(function* (hash: string) {
         return yield* InstanceState.useEffect(state, (s) => s.patch(hash))
diff --git a/packages/deepagent-code/src/tool/activity_facade.ts b/packages/deepagent-code/src/tool/activity_facade.ts
new file mode 100644
index 00000000..0d37757a
--- /dev/null
+++ b/packages/deepagent-code/src/tool/activity_facade.ts
@@ -0,0 +1,292 @@
+/**
+ * FEAT-011 T4 — the four model-facing activity facade tools:
+ *   activity_start / activity_status / activity_result / activity_control
+ *
+ * T6 (有界结果面) is enforced here and in the dispatcher: status lists are capped at 20 entries,
+ * result projections carry only the TERMINAL view (terminalState/reason/bounded summary/structured
+ * receipt/verdict), and every free-text field passes applyResultBound + the registry's Truncate
+ * wrapper. Non-terminal result queries return the live state hint instead of partial transcripts.
+ *
+ * Permission governance: activity_start and activity_control are MUTATING — they ask under the
+ * "task" permission name (already in core MUTATING_PERMISSIONS). activity_status/activity_result
+ * are read-only and never ask. Visibility: gated by DEEPAGENT_CODE_ACTIVITY_FACADE (staged off)
+ * and primary-agent-only in the registry projection (mirrors pr_finalize).
+ */
+import { Effect, Schema } from "effect"
+import * as Tool from "./tool"
+import { FacadeActivity } from "@/session/facade-activity"
+
+const FacadeSubkind = Schema.Literals(["task", "goal", "panel"])
+
+const FacadeBudgetSchema = Schema.Struct({
+  maxTicks: Schema.optional(Schema.Int.check(Schema.isGreaterThan(0))).annotate({
+    description: "Max goal-loop ticks (clamped to the host policy ceiling).",
+  }),
+  maxTokens: Schema.optional(Schema.Int.check(Schema.isGreaterThan(0))).annotate({
+    description: "Max tokens across the activity (clamped to the host policy ceiling).",
+  }),
+  maxWallclockMs: Schema.optional(Schema.Int.check(Schema.isGreaterThan(0))).annotate({
+    description: "Max wall-clock milliseconds (clamped to the host policy ceiling).",
+  }),
+})
+
+// ── activity_start ────────────────────────────────────────────────────────────────────────────
+
+const StartParameters = Schema.Struct({
+  subkind: FacadeSubkind.annotate({
+    description: "Which runner backs this activity: task (durable subagent queue), goal (long-run goal loop), panel (expert panel consult).",
+  }),
+  objective: Schema.String.annotate({
+    description:
+      "The frozen objective: task description, goal objective, or the panel question. Bounded; keep it self-contained.",
+  }),
+  budget: Schema.optional(FacadeBudgetSchema).annotate({
+    description: "Optional model-requested limits; the host clamps them with min against policy ceilings.",
+  }),
+  prompt: Schema.optional(Schema.String).annotate({
+    description: "task only: the full task prompt (defaults to the objective).",
+  }),
+  subagent_type: Schema.optional(Schema.String).annotate({
+    description: "task only: the subagent type to dispatch (defaults to explore).",
+  }),
+})
+
+export const ActivityStartTool = Tool.define(
+  "activity_start",
+  Effect.gen(function* () {
+    const facade = yield* FacadeActivity.Service
+
+    const run = Effect.fn("ActivityStartTool.execute")(function* (
+      params: Schema.Schema.Type<typeof StartParameters>,
+      ctx: Tool.Context,
+    ) {
+      // MUTATING: governed under the "task" permission (in core MUTATING_PERMISSIONS).
+      yield* ctx.ask({
+        permission: "task",
+        patterns: [params.subkind],
+        always: ["*"],
+        metadata: { subkind: params.subkind, objective: params.objective.slice(0, 200) },
+      })
+      const started = yield* facade
+        .start({
+          sessionID: ctx.sessionID,
+          subkind: params.subkind,
+          objective: params.objective,
+          spawnToolCallID: ctx.callID,
+          parentMessageID: ctx.messageID,
+          budget: params.budget,
+          ...(params.prompt !== undefined ? { prompt: params.prompt } : {}),
+          ...(params.subagent_type !== undefined ? { subagentType: params.subagent_type } : {}),
+        })
+        .pipe(Effect.mapError((error) => new Error(`${error._tag}: ${("reason" in error && error.reason) || "start failed"}`)))
+      const refs = Object.entries(started.ref)
+        .map(([key, value]) => `${key}=${value}`)
+        .join(" ")
+      return {
+        title: `Activity start (${params.subkind})`,
+        metadata: { activityID: started.activityID, subkind: started.subkind },
+        output:
+          `Activity ${started.activityID} admitted (subkind=${started.subkind}, state=active). ${refs}\n` +
+          `Budget applied: maxTicks=${started.budget.maxTicks}, maxTokens=${started.budget.maxTokens}, ` +
+          `maxWallclockMs=${started.budget.maxWallclockMs}. Admission does not mean the child provider has started. ` +
+          `Use activity_status to monitor and activity_result for the bounded terminal result.`,
+      }
+    })
+
+    return {
+      description:
+        "Start one supervised background activity (task / goal / panel) through the unified activity facade. " +
+        "Only ONE active activity per subkind is allowed per session (fail-closed). Budgets are clamped by host policy. " +
+        "Returns an admission receipt; lifecycle stays with the underlying runner.",
+      parameters: StartParameters,
+      execute: (params: Schema.Schema.Type<typeof StartParameters>, ctx: Tool.Context) => run(params, ctx).pipe(Effect.orDie),
+    }
+  }),
+)
+
+// ── activity_status ───────────────────────────────────────────────────────────────────────────
+
+const StatusParameters = Schema.Struct({
+  subkind: Schema.optional(FacadeSubkind).annotate({
+    description: "Filter to one subkind; omit to list all facade activities for this session.",
+  }),
+  limit: Schema.optional(Schema.Int.check(Schema.isGreaterThan(0), Schema.isLessThanOrEqualTo(20))).annotate({
+    description: "Max entries to return (hard ceiling 20, newest first).",
+  }),
+})
+
+export const ActivityStatusTool = Tool.define(
+  "activity_status",
+  Effect.gen(function* () {
+    const facade = yield* FacadeActivity.Service
+
+    const run = Effect.fn("ActivityStatusTool.execute")(function* (
+      params: Schema.Schema.Type<typeof StatusParameters>,
+      ctx: Tool.Context,
+    ) {
+      // READ-ONLY: no permission ask.
+      const entries = yield* facade.status({
+        sessionID: ctx.sessionID,
+        ...(params.subkind !== undefined ? { subkind: params.subkind } : {}),
+        ...(params.limit !== undefined ? { limit: params.limit } : {}),
+      })
+      if (!entries.length) {
+        return {
+          title: "Activity status",
+          metadata: { count: 0 },
+          output: "No facade activities recorded for this session.",
+        }
+      }
+      const lines = entries.map((entry) => {
+        const refs = Object.entries(entry.ref)
+          .map(([key, value]) => `${key}=${value}`)
+          .join(" ")
+        return (
+          `- ${entry.activityID} [${entry.subkind}] state=${entry.state}` +
+          (entry.reason ? ` reason=${entry.reason}` : "") +
+          (entry.objective ? ` objective="${entry.objective}"` : "") +
+          (refs ? ` (${refs})` : "")
+        )
+      })
+      return {
+        title: "Activity status",
+        metadata: { count: entries.length },
+        output: `${entries.length} facade activit${entries.length === 1 ? "y" : "ies"} (newest first):\n${lines.join("\n")}`,
+      }
+    })
+
+    return {
+      description:
+        "List bounded status for this session's facade activities (task/goal/panel). Returns refs/state/reason only — " +
+        "never full child transcripts. A recovery_required state is not auto-retryable.",
+      parameters: StatusParameters,
+      execute: (params: Schema.Schema.Type<typeof StatusParameters>, ctx: Tool.Context) => run(params, ctx).pipe(Effect.orDie),
+    }
+  }),
+)
+
+// ── activity_result (T6 bounded result surface) ───────────────────────────────────────────────
+
+const ResultParameters = Schema.Struct({
+  subkind: FacadeSubkind.annotate({
+    description: "Which subkind's most recent facade activity to fetch the result for.",
+  }),
+})
+
+export const ActivityResultTool = Tool.define(
+  "activity_result",
+  Effect.gen(function* () {
+    const facade = yield* FacadeActivity.Service
+
+    const run = Effect.fn("ActivityResultTool.execute")(function* (
+      params: Schema.Schema.Type<typeof ResultParameters>,
+      ctx: Tool.Context,
+    ) {
+      // READ-ONLY: no permission ask.
+      const projection = yield* facade
+        .result({ sessionID: ctx.sessionID, subkind: params.subkind })
+        .pipe(
+          Effect.mapError(
+            (error) => new Error(`${error._tag}: no ${params.subkind} facade activity recorded for this session`),
+          ),
+        )
+      if (!projection.terminal) {
+        return {
+          title: `Activity result (${params.subkind})`,
+          metadata: { activityID: projection.activityID, terminal: false, truncated: false },
+          output:
+            `Activity ${projection.activityID} is still ${projection.state}. ` +
+            `Results are only projected once the activity reaches a terminal state. Use activity_status to monitor.`,
+        }
+      }
+      const lines: string[] = [
+        `Activity ${projection.activityID} (${projection.subkind}) terminal: state=${projection.state}` +
+          (projection.reason ? ` reason=${projection.reason}` : ""),
+      ]
+      if (projection.summary) lines.push(`Objective: ${projection.summary}`)
+      if (projection.receipt) lines.push(`Receipt: ${JSON.stringify(projection.receipt)}`)
+      if (projection.verdict !== undefined) lines.push(`Verdict: ${JSON.stringify(projection.verdict)}`)
+      if (projection.phase !== undefined) lines.push(`Goal phase: ${projection.phase}`)
+      if (projection.truncated)
+        lines.push("(result bounded by host output cap; consult the child session for the full transcript)")
+      return {
+        title: `Activity result (${params.subkind})`,
+        metadata: { activityID: projection.activityID, terminal: true, truncated: projection.truncated },
+        output: lines.join("\n"),
+      }
+    })
+
+    return {
+      description:
+        "Fetch the BOUNDED terminal result of this session's most recent facade activity of the given subkind. " +
+        "Returns only the terminal projection (state/reason/bounded summary/structured receipt or verdict) — " +
+        "never the full child transcript. Non-terminal activities return a state hint.",
+      parameters: ResultParameters,
+      execute: (params: Schema.Schema.Type<typeof ResultParameters>, ctx: Tool.Context) => run(params, ctx).pipe(Effect.orDie),
+    }
+  }),
+)
+
+// ── activity_control ──────────────────────────────────────────────────────────────────────────
+
+const ControlParameters = Schema.Struct({
+  subkind: FacadeSubkind.annotate({ description: "Which subkind's most recent facade activity to control." }),
+  action: Schema.Literals(["pause", "resume", "stop", "steer"]).annotate({
+    description:
+      "Control action. goal supports pause/resume/stop/steer; task and panel support only stop (pause/resume are not fabricated).",
+  }),
+  message: Schema.optional(Schema.String).annotate({
+    description: "steer only: guidance text delivered to the goal via the goal_steer channel.",
+  }),
+  reason: Schema.optional(Schema.String).annotate({ description: "Optional reason recorded in the audit trail." }),
+})
+
+export const ActivityControlTool = Tool.define(
+  "activity_control",
+  Effect.gen(function* () {
+    const facade = yield* FacadeActivity.Service
+
+    const run = Effect.fn("ActivityControlTool.execute")(function* (
+      params: Schema.Schema.Type<typeof ControlParameters>,
+      ctx: Tool.Context,
+    ) {
+      // MUTATING: governed under the "task" permission (in core MUTATING_PERMISSIONS).
+      yield* ctx.ask({
+        permission: "task",
+        patterns: [`${params.subkind}:${params.action}`],
+        always: ["*"],
+        metadata: { subkind: params.subkind, action: params.action },
+      })
+      const outcome = yield* facade
+        .control({
+          sessionID: ctx.sessionID,
+          subkind: params.subkind,
+          action: params.action,
+          ...(params.message !== undefined ? { message: params.message } : {}),
+          ...(params.reason !== undefined ? { reason: params.reason } : {}),
+        })
+        .pipe(Effect.mapError((error) => new Error(`${error._tag}: ${("reason" in error && error.reason) || "control failed"}`)))
+      return {
+        title: `Activity control (${params.subkind}/${params.action})`,
+        metadata: { subkind: params.subkind, action: params.action, applied: outcome.applied },
+        output: `${outcome.detail} (applied=${outcome.applied})`,
+      }
+    })
+
+    return {
+      description:
+        "Control this session's most recent facade activity of the given subkind. Delegates to each runner's existing " +
+        "control surface: goal pause/resume/stop/steer, task stop (durable close), panel stop. Unsupported combinations fail closed.",
+      parameters: ControlParameters,
+      execute: (params: Schema.Schema.Type<typeof ControlParameters>, ctx: Tool.Context) => run(params, ctx).pipe(Effect.orDie),
+    }
+  }),
+)
+
+/** Tool ids registered under the activity facade gate (used by the registry's primary-only filter). */
+export const ACTIVITY_FACADE_TOOL_IDS: ReadonlySet<string> = new Set([
+  ActivityStartTool.id,
+  ActivityStatusTool.id,
+  ActivityResultTool.id,
+  ActivityControlTool.id,
+])
diff --git a/packages/deepagent-code/src/tool/registry.ts b/packages/deepagent-code/src/tool/registry.ts
index b832b126..da4b735d 100644
--- a/packages/deepagent-code/src/tool/registry.ts
+++ b/packages/deepagent-code/src/tool/registry.ts
@@ -13,6 +13,14 @@ import { TaskReadTool } from "./task_read"
 import { TaskCloseTool } from "./task_close"
 import { TaskRecoveryTool } from "./task_recovery"
 import { PRFinalizeTool } from "./pr_finalize"
+import {
+  ActivityStartTool,
+  ActivityStatusTool,
+  ActivityResultTool,
+  ActivityControlTool,
+  ACTIVITY_FACADE_TOOL_IDS,
+} from "./activity_facade"
+import { FacadeActivity } from "@/session/facade-activity"
 import { DismissValidationTool } from "./dismiss_validation"
 import { Database } from "@deepagent-code/core/database/database"
 import { V2ProviderTurn } from "@deepagent-code/core/session/runner/v2-provider-turn"
@@ -199,6 +207,36 @@ const layerWithFacades: Layer.Layer<
     const querylog = yield* QueryLogTool
     const agent = yield* Agent.Service
 
+    // FEAT-011 T3/T4 — the unified activity facade (activity_start/status/result/control). Staged
+    // OFF by flag; the flag is the single visibility gate (flag off ⇒ zero tools even if an outer
+    // graph provides the dispatcher). When ON the dispatcher is resolved from the environment if
+    // an outer graph already provides it, otherwise built inline (hard requirements are only
+    // Database + RuntimeFlags — both already in this layer's requirement list — and every runner
+    // dependency resolves via serviceOption, so no caller of ToolRegistry.layer gains a new
+    // requirement).
+    const facadeActivityProvided = yield* Effect.serviceOption(FacadeActivity.Service)
+    const facadeActivity = !flags.activityFacade
+      ? undefined
+      : Option.isSome(facadeActivityProvided)
+        ? facadeActivityProvided.value
+        : yield* FacadeActivity.build
+    const activityFacadeTools = facadeActivity
+      ? yield* Effect.all({
+          activity_start: Tool.init(
+            yield* ActivityStartTool.pipe(Effect.provideService(FacadeActivity.Service, facadeActivity)),
+          ),
+          activity_status: Tool.init(
+            yield* ActivityStatusTool.pipe(Effect.provideService(FacadeActivity.Service, facadeActivity)),
+          ),
+          activity_result: Tool.init(
+            yield* ActivityResultTool.pipe(Effect.provideService(FacadeActivity.Service, facadeActivity)),
+          ),
+          activity_control: Tool.init(
+            yield* ActivityControlTool.pipe(Effect.provideService(FacadeActivity.Service, facadeActivity)),
+          ),
+        })
+      : undefined
+
     const state = yield* InstanceState.make<State>(
       Effect.fn("ToolRegistry.state")(function* (ctx) {
         const custom: Tool.Def[] = []
@@ -375,6 +413,14 @@ const layerWithFacades: Layer.Layer<
             ...(flags.debugTool ? [tool.debug] : []),
             ...(flags.experimentalQueryLogTool ? [tool.query_log] : []),
             ...(flags.experimentalPlanMode && flags.client === "cli" ? [tool.plan] : []),
+            ...(activityFacadeTools
+              ? [
+                  activityFacadeTools.activity_start,
+                  activityFacadeTools.activity_status,
+                  activityFacadeTools.activity_result,
+                  activityFacadeTools.activity_control,
+                ]
+              : []),
           ],
           task: tool.task,
           read: tool.read,
@@ -424,6 +470,9 @@ const layerWithFacades: Layer.Layer<
         )
       const filtered = [...registryState.builtin, ...registryState.custom].flatMap((tool) => {
         if (tool.id === PRFinalizeTool.id && input.agent.mode !== "primary") return []
+        // FEAT-011 T4: the activity facade tools are a PRIMARY-agent control surface — subagents
+        // never spawn/control activities through the facade (mirrors the pr_finalize gate).
+        if (ACTIVITY_FACADE_TOOL_IDS.has(tool.id) && input.agent.mode !== "primary") return []
         if (tool.id === CodeIntelTool.id) {
           return [projectRollout.enabled.contextQueryToolsV2 ? registryState.codeIntelV2 : registryState.codeIntelV1]
         }
diff --git a/packages/deepagent-code/src/tool/task-run.ts b/packages/deepagent-code/src/tool/task-run.ts
index 5fdbcbbb..1d45ea8d 100644
--- a/packages/deepagent-code/src/tool/task-run.ts
+++ b/packages/deepagent-code/src/tool/task-run.ts
@@ -765,6 +765,136 @@ export function recoverExpiredTaskRuns(input: { directory: string; now?: number;
             candidates,
             (candidate) =>
               Effect.gen(function* () {
+                // QUAL-005 (BUG-405-011 residue): a finalizing run whose executor died after
+                // sealing its structured completion (persistDegradedStructuredOutput /
+                // persistStructuredFinalizerResponse + sealed evidence) already holds a durable,
+                // bounded result. Recover it into its terminal state — mirroring classifyOnStartup —
+                // instead of destroying it as execution_lease_expired. Recovery only re-reads
+                // persisted material; it never invokes the provider, so bounded-retry semantics
+                // (maxAttempts: 2 + allowTextFallback) are preserved.
+                const structuredOutput = candidate.run.execution_spec?.structuredOutput
+                const recoveredCompletion =
+                  candidate.run.state === "finalizing" &&
+                  candidate.run.control_state === "open" &&
+                  candidate.run.interrupt_requested_at === null &&
+                  candidate.run.execution_owner &&
+                  (candidate.run.workspace_owner !== "run" ||
+                    ["retained", "submitted"].includes(candidate.run.worktree_state ?? "none")) &&
+                  isStructuredOutputContract(structuredOutput)
+                    ? yield* recoverStructuredOutputCompletionInTransaction(tx, {
+                        runID: candidate.run.run_id,
+                        childSessionID: candidate.run.child_session_id,
+                        ownerToken: candidate.run.execution_owner,
+                        claimGeneration: candidate.run.claim_generation,
+                        expectedVersion: candidate.run.version,
+                        attempt: candidate.run.attempts,
+                        rawResultMessageID: candidate.run.raw_result_message_id ?? undefined,
+                        contract: structuredOutput,
+                        now,
+                      })
+                    : undefined
+                if (recoveredCompletion) {
+                  const settled = yield* tx
+                    .update(TaskRunTable)
+                    .set({
+                      state: "completed",
+                      phase: "settled",
+                      control_state: "closed",
+                      reason:
+                        recoveredCompletion.structuredOutputReceipt.transport === "structured"
+                          ? "structured_output_valid"
+                          : recoveredCompletion.structuredOutputReceipt.transport === "text_fallback"
+                            ? "structured_output_text_fallback"
+                            : "structured_output_degraded_text",
+                      output: recoveredCompletion.output,
+                      structured_result_message_id: recoveredCompletion.structuredResultMessageID
+                        ? MessageID.make(recoveredCompletion.structuredResultMessageID)
+                        : null,
+                      structured_output_receipt: recoveredCompletion.structuredOutputReceipt,
+                      execution_owner: null,
+                      lease_expires_at: null,
+                      version: candidate.run.version + 1,
+                      time_updated: now,
+                      time_settled: now,
+                    })
+                    .where(
+                      and(
+                        eq(TaskRunTable.run_id, candidate.run.run_id),
+                        eq(TaskRunTable.version, candidate.run.version),
+                        eq(TaskRunTable.state, "finalizing"),
+                        eq(TaskRunTable.execution_owner, candidate.run.execution_owner!),
+                        eq(TaskRunTable.claim_generation, candidate.run.claim_generation),
+                        eq(TaskRunTable.control_state, "open"),
+                        isNull(TaskRunTable.interrupt_requested_at),
+                      ),
+                    )
+                    .returning()
+                    .get()
+                    .pipe(Effect.orDie)
+                  if (settled) {
+                    yield* tx
+                      .insert(TaskRunEventTable)
+                      .values({
+                        event_id: Identifier.ascending("event"),
+                        run_id: candidate.run.run_id,
+                        version: settled.version,
+                        type: "structured_response_recovered",
+                        from_state: "finalizing",
+                        to_state: "completed",
+                        reason:
+                          recoveredCompletion.structuredOutputReceipt.transport === "degraded_text"
+                            ? "persisted_degraded_receipt"
+                            : "persisted_structured_response",
+                        data: recoveredCompletion.structuredResultMessageID
+                          ? { response_message_id: recoveredCompletion.structuredResultMessageID }
+                          : { raw_message_id: candidate.run.raw_result_message_id },
+                        time_created: now,
+                      })
+                      .run()
+                      .pipe(Effect.orDie)
+                    if (
+                      candidate.run.effective_delivery_mode === "background" ||
+                      candidate.run.delivery_mode === "background"
+                    ) {
+                      const outboxID = `task-notify:${candidate.run.run_id}`
+                      const payload = {
+                        agent:
+                          typeof candidate.run.execution_spec?.agent === "string"
+                            ? candidate.run.execution_spec.agent
+                            : "subagent",
+                        text: `Background task completed. Call task_read({ task_id: "${candidate.run.child_session_id}" }) to read the result.`,
+                      }
+                      yield* tx
+                        .insert(TaskNotificationOutboxTable)
+                        .values({
+                          id: outboxID,
+                          run_id: candidate.run.run_id,
+                          event_kind: "terminal",
+                          correlation_id: outboxID,
+                          message_id: MessageID.ascending(
+                            `msg_task_notify_${Hash.sha256(outboxID).slice(0, 24)}`,
+                          ),
+                          parent_session_id: candidate.run.parent_session_id,
+                          directory: input.directory,
+                          payload,
+                          payload_hash: Hash.sha256(JSON.stringify(payload)),
+                          status: "pending",
+                          attempts: 0,
+                          available_at: now,
+                          time_created: now,
+                          time_updated: now,
+                        })
+                        .onConflictDoNothing()
+                        .run()
+                        .pipe(Effect.orDie)
+                    }
+                  }
+                  // Excluded from the returned runs: the caller projects each returned run as an
+                  // expired-error child session metadata (projectRecoveredSubagentRun). A recovered
+                  // completion is not an error; its foreground metadata is reconciled idempotently
+                  // by repairDurableSettledRunProjections on the next durable control-plane start.
+                  return undefined
+                }
                 const updated = yield* tx
                   .update(TaskRunTable)
                   .set({
diff --git a/packages/deepagent-code/src/tool/task.ts b/packages/deepagent-code/src/tool/task.ts
index 44880470..dd9d83a4 100644
--- a/packages/deepagent-code/src/tool/task.ts
+++ b/packages/deepagent-code/src/tool/task.ts
@@ -1326,6 +1326,7 @@ interface AttemptBundle {
   readonly structuredSettlement: { reason: StructuredOutputTerminalReason; receipt?: StructuredOutputReceipt }
   readonly submitWorktree: () => Effect.Effect<SubmittedPR | undefined, unknown>
   readonly teardownWorktree: (force: boolean) => Effect.Effect<unknown, unknown>
+  readonly mergeAutomaticWorktree: () => Effect.Effect<unknown, unknown>
 }
 
 type AttemptResult = {
@@ -2375,6 +2376,29 @@ export const TaskTool = Tool.define(
             ).pipe(Effect.ignore)
           })
 
+          // RISK-002: merge-on-success for automatic write isolation — the worker branch is merged
+          // back into the parent checkout (committed, non-fast-forward) BEFORE safeRemove. A dirty
+          // parent or a conflict preserves the worktree (safeRemove refuses unmerged work) and is
+          // surfaced to the parent instead of silently dropping the changes. Merge failures never
+          // fail a successful task.
+          const mergeAutomaticWorktree = Effect.fn("TaskTool.mergeAutomaticWorktree")(function* () {
+            if (!a.worktreeInfo || !automaticWriteIsolation) return
+            const worktreeOpt = yield* Effect.serviceOption(Worktree.Service)
+            if (Option.isNone(worktreeOpt)) return
+            const result = yield* worktreeOpt.value
+              .mergeBackAutomatic({ directory: a.worktreeInfo.directory })
+              .pipe(
+                Effect.catch((error) =>
+                  Effect.succeed({ merged: false as const, conflicted: [] as readonly string[], message: String(error) }),
+                ),
+              )
+            if (!result.merged)
+              yield* inject(
+                "error",
+                `Worker changes were NOT merged into the parent: ${result.message} The worktree is preserved at ${a.worktreeInfo.directory}.`,
+              ).pipe(Effect.ignore)
+          })
+
           // Automatically isolated write agents submit a scoped commit to the durable PR queue.
           // Explicit isolation stays detached and never enters the automatic collaboration flow.
           const parentDir = parent.directory
@@ -2411,6 +2435,7 @@ export const TaskTool = Tool.define(
             inject,
             submitWorktree,
             teardownWorktree,
+            mergeAutomaticWorktree,
           }
 
           if (allowExtend && (yield* background.extend({ id: a.nextSession.id, run: runTask() }))) {
@@ -2510,7 +2535,10 @@ export const TaskTool = Tool.define(
                 resolvedOutputSchema ? b.structuredSettlement.reason : "text_output_valid",
                 { output },
               )
-              if (!pr) yield* b.teardownWorktree(b.automaticWriteIsolation)
+              if (!pr) {
+                yield* b.mergeAutomaticWorktree()
+                yield* b.teardownWorktree(b.automaticWriteIsolation)
+              }
               return {
                 title: params.description,
                 metadata: { ...b.metadata, ...(pr ? { prId: pr.id, workerCommit: pr.workerCommit } : {}) },
@@ -2615,7 +2643,10 @@ export const TaskTool = Tool.define(
                   }),
                 },
               )
-              if (!pr) yield* b.teardownWorktree(b.automaticWriteIsolation)
+              if (!pr) {
+                yield* b.mergeAutomaticWorktree()
+                yield* b.teardownWorktree(b.automaticWriteIsolation)
+              }
               yield* b.inject("completed", output)
               return
             }
@@ -2858,6 +2889,24 @@ export const TaskTool = Tool.define(
             : worktreeOpt.value.safeRemove({ directory: worktreeInfo.directory })
         ).pipe(Effect.ignore)
       })
+      // RISK-002: merge-on-success for automatic write isolation (background run path; same
+      // semantics as the foreground helper — conflicts/dirty parent preserve the worktree and are
+      // reported; merge failures never fail a successful task).
+      const mergeAutomaticWorktree = Effect.fn("TaskTool.mergeAutomaticWorktree")(function* () {
+        if (!worktreeInfo || !automaticWriteIsolation || Option.isNone(worktreeOpt)) return
+        const result = yield* worktreeOpt.value
+          .mergeBackAutomatic({ directory: worktreeInfo.directory })
+          .pipe(
+            Effect.catch((error) =>
+              Effect.succeed({ merged: false as const, conflicted: [] as readonly string[], message: String(error) }),
+            ),
+          )
+        if (!result.merged)
+          yield* inject(
+            "error",
+            `Worker changes were NOT merged into the parent: ${result.message} The worktree is preserved at ${worktreeInfo.directory}.`,
+          ).pipe(Effect.ignore)
+      })
       const submitWorktree = Effect.fn("TaskTool.submitWorktree")(function* () {
         if (!worktreeInfo || !automaticWriteIsolation) return undefined
         if (!parent.directory || !git || !queue) {
@@ -2920,7 +2969,10 @@ export const TaskTool = Tool.define(
               }
             : {}),
         })
-        if (!pr) yield* teardownWorktree(automaticWriteIsolation)
+        if (!pr) {
+          yield* mergeAutomaticWorktree()
+          yield* teardownWorktree(automaticWriteIsolation)
+        }
         if (notifyParent) yield* inject("completed", completedOutput)
         return pr
       })
diff --git a/packages/deepagent-code/src/tool/truncate.ts b/packages/deepagent-code/src/tool/truncate.ts
index 7a50ba2d..4022da0f 100644
--- a/packages/deepagent-code/src/tool/truncate.ts
+++ b/packages/deepagent-code/src/tool/truncate.ts
@@ -55,15 +55,13 @@ function makeLayer<R>(configEffect: Effect.Effect<Config.Interface | undefined,
       const config = yield* configEffect
 
       const cleanup = Effect.fn("Truncate.cleanup")(function* () {
-        const cutoff = Identifier.timestamp(
-          Identifier.create("tool", "ascending", Date.now() - Duration.toMillis(RETENTION)),
-        )
+        const cutoff = Date.now() - Duration.toMillis(RETENTION)
         const entries = yield* fs.readDirectory(TRUNCATION_DIR).pipe(
           Effect.map((all) => all.filter((name) => name.startsWith("tool_"))),
           Effect.catch(() => Effect.succeed([])),
         )
         for (const entry of entries) {
-          if (Identifier.timestamp(entry) >= cutoff) continue
+          if (retainedTimestamp(entry) >= cutoff) continue
           yield* fs.remove(path.join(TRUNCATION_DIR, entry)).pipe(Effect.catch(() => Effect.void))
         }
       })
@@ -156,6 +154,18 @@ function makeLayer<R>(configEffect: Effect.Effect<Config.Interface | undefined,
   )
 }
 
+// Identifier timestamps pack epoch-ms into a 6-byte field, so they wrap every 2^36 ms (~795 days;
+// last wrap 2026-08-14). Unwrap relative to now so retention comparisons stay correct across wrap
+// boundaries — retention (7d) is far smaller than half a cycle, so the nearest-cycle lift is exact.
+function retainedTimestamp(entry: string) {
+  const cycle = 2 ** 36
+  const now = Date.now()
+  let ts = Identifier.timestamp(entry)
+  while (ts < now - cycle / 2) ts += cycle
+  while (ts > now + cycle / 2) ts -= cycle
+  return ts
+}
+
 export const layer = makeLayer(Effect.map(Config.Service, (config) => config))
 
 export const defaultLayer = makeLayer(Effect.succeed(undefined)).pipe(
diff --git a/packages/deepagent-code/src/wiki/event-driven-archiver.ts b/packages/deepagent-code/src/wiki/event-driven-archiver.ts
index 90c929e2..f1da8d59 100644
--- a/packages/deepagent-code/src/wiki/event-driven-archiver.ts
+++ b/packages/deepagent-code/src/wiki/event-driven-archiver.ts
@@ -18,6 +18,12 @@ import * as Log from "@deepagent-code/core/util/log"
 // only starts this consumer when the event-driven path is desired. It is idempotent and best-effort
 // (archiveSessionOnCompletion never throws), so double-delivery just re-projects the same archive.
 //
+// FEAT-006 SELF-LOOP GUARD (verified in tests): the archiver's archive writes now publish
+// wiki.page.changed, but this consumer keys ONLY on ARCHIVE_TRIGGER_TYPES (session.completed /
+// goal.completed) and wiki.page.changed is NOT one — the consumer-type filter isolates the loop by
+// construction, so archiver→event→archiver can never cascade (the persisted archive doc is also a
+// context_snapshot, outside EXECUTION_ARCHIVE_TYPES, so it can never be re-archived either).
+//
 // LAYERING: `deepagent-code`. Bridges the bus (core) to the archiver (deepagent-code).
 
 const log = Log.create({ service: "event-driven-archiver" })
@@ -88,7 +94,7 @@ export const layerWith = (options?: LayerOptions) =>
             yield* ack(event) // unarchivable, terminal — acking avoids an un-fixable retry loop.
             return false
           }
-          const outcome = yield* archiveSessionOnCompletion({ workspacePath, sessionID }).pipe(
+          const outcome = yield* archiveSessionOnCompletion({ workspacePath, sessionID, bus }).pipe(
             Effect.map((archive) => ({ ok: true as const, archive })),
             Effect.catchCause((cause) => Effect.succeed({ ok: false as const, cause })),
           )
diff --git a/packages/deepagent-code/src/wiki/session-archive.ts b/packages/deepagent-code/src/wiki/session-archive.ts
index d796daae..fa000d64 100644
--- a/packages/deepagent-code/src/wiki/session-archive.ts
+++ b/packages/deepagent-code/src/wiki/session-archive.ts
@@ -1,4 +1,4 @@
-import { Effect } from "effect"
+import { Effect, Option } from "effect"
 import { existsSync, readdirSync, statSync } from "node:fs"
 import path from "node:path"
 import { Global } from "@deepagent-code/core/global"
@@ -14,6 +14,7 @@ import {
   type WikiEditGate,
 } from "./wiki-service"
 import { WikiSearchIndex } from "./search-index"
+import * as WikiEvents from "./wiki-events"
 
 /**
  * V3.9 §B — production wiring for the Wiki projection.
@@ -96,12 +97,22 @@ export const openWikiGraph = (input: { workspacePath?: string; sessionID?: strin
  * editKnowledge — omitted, the WikiService falls back to its DEFAULT_WIKI_EDIT_GATE (the minimum
  * floor). Production passes `buildWikiEditGate(memoryDir)` so a human edit goes through the SAME
  * validation gate (§B.3) as knowledge promotion (dedupe vs RejectedBuffer + replay/regression).
+ *
+ * FEAT-006: `workspacePath` is threaded into the service's event ports (labels wiki.page.changed
+ * payloads) and `bus` optionally injects the publish port. The (unmodified) handler construction
+ * point passes neither — editKnowledge then falls back to the DeepAgentEventBus.Service from its
+ * Effect runtime environment, which the route runtime provides (same seam the packs handlers use).
  */
 export const openWikiService = (input: {
   workspacePath?: string
   sessionID?: string
   gate?: WikiEditGate
-}): WikiService => (input.gate ? new WikiService(openWikiGraph(input), input.gate) : new WikiService(openWikiGraph(input)))
+  bus?: WikiEvents.WikiEventPublisher
+}): WikiService =>
+  new WikiService(openWikiGraph(input), input.gate, {
+    ...(input.bus ? { bus: input.bus } : {}),
+    ...(input.workspacePath ? { workspacePath: input.workspacePath } : {}),
+  })
 
 // A knowledge doc's type maps to the learning-candidate type space (which has no bare "knowledge" —
 // it is memory/strategy/methodology/anti_pattern). knowledge/memory → "memory"; strategy/methodology
@@ -170,12 +181,22 @@ export const openWikiSearchIndex = (input: { workspacePath?: string; sessionID?:
  * §B.6 session-completion trigger. Aggregates the session's trajectory into an ExecutionArchive.
  * Default-safe: never throws, returns null on any failure or when the session has no trajectory.
  * The caller (prompt.ts persistSuggestion) gates this on flags.experimentalWiki.
+ *
+ * FEAT-006: after the archive page is DURABLY persisted, publishes wiki.page.changed with the
+ * `archive` marker (idempotency key `wiki.page.changed:archive:<docId>:<version>`). `bus` may be
+ * injected explicitly (the event-driven archiver passes its own bus); otherwise the Effect
+ * environment's DeepAgentEventBus.Service is tried; neither available → no event (degraded no-op,
+ * archival itself is unaffected). SELF-LOOP SAFETY: this event is NOT an archive trigger
+ * (ARCHIVE_TRIGGER_TYPES = session.completed/goal.completed only), and the persisted doc is a
+ * `context_snapshot` — outside EXECUTION_ARCHIVE_TYPES — so it can never be re-archived into a
+ * later archive of the same session. No archiver→event→archiver cascade exists by construction.
  */
 export const archiveSessionOnCompletion = (input: {
   workspacePath: string
   sessionID: string
+  bus?: WikiEvents.WikiEventPublisher
 }): Effect.Effect<ExecutionArchive | null, never> =>
-  Effect.sync(() => {
+  Effect.gen(function* () {
     const graph = openWikiGraph({ workspacePath: input.workspacePath, sessionID: input.sessionID })
     const archive = buildExecutionArchive(graph, input.sessionID)
     if (archive.entries.length === 0) return null
@@ -184,17 +205,35 @@ export const archiveSessionOnCompletion = (input: {
     // new source of truth), rebuildable from the graph; it makes the assembled Markdown durably
     // available (e.g. for a Repo view) without an event bus. Idempotent via idSlug; best-effort — a
     // persist failure degrades to just returning the in-memory archive (matchCauseEffect below).
-    persistArchiveDoc(input.sessionID, archive)
+    const persisted = persistArchiveDoc(input.sessionID, archive)
+    if (persisted) {
+      // FEAT-006 — emit ONLY for a real persist (no doc → nothing changed → no event). Best-effort:
+      // publishWikiPageChanged swallows bus failures, so this can never fail the archive.
+      const bus = yield* WikiEvents.resolveBus(input.bus)
+      if (Option.isSome(bus))
+        yield* WikiEvents.publishWikiPageChanged(bus.value, {
+          workspacePath: input.workspacePath,
+          docId: persisted.id,
+          type: persisted.type,
+          version: persisted.version,
+          editor: "system:archiver",
+          archive: { sessionID: input.sessionID },
+        })
+    }
     return archive
   }).pipe(Effect.matchCauseEffect({ onFailure: () => Effect.succeed(null), onSuccess: Effect.succeed }))
 
 // Best-effort persistence of the rendered execution archive into the session's run-scoped context
 // store. Reuses the SAME context store root openWikiGraph reads, so a subsequent open projects it.
-const persistArchiveDoc = (sessionID: string, archive: ExecutionArchive): void => {
+// Returns the persisted Doc (needed by FEAT-006 to derive docId/version for the event's idempotency
+// key) or null when the session has no context store yet. DocumentStore.upsert is fingerprint-
+// idempotent: re-persisting an UNCHANGED archive returns the SAME doc at the SAME version, so the
+// wiki.page.changed idempotency key (docId+version) is stable across redelivered triggers.
+const persistArchiveDoc = (sessionID: string, archive: ExecutionArchive): Doc | null => {
   const ctxRoot = contextStoreRoot(sessionID)
-  if (!existsSync(ctxRoot)) return // no session context store yet → nothing to attach to; skip
+  if (!existsSync(ctxRoot)) return null // no session context store yet → nothing to attach to; skip
   const store = new DocumentStore(ctxRoot)
-  store.upsert({
+  return store.upsert({
     type: "context_snapshot",
     scope: `run:${sessionID}`,
     description: `execution archive ${sessionID}`,
diff --git a/packages/deepagent-code/src/wiki/wiki-events.ts b/packages/deepagent-code/src/wiki/wiki-events.ts
new file mode 100644
index 00000000..4ca5bb0b
--- /dev/null
+++ b/packages/deepagent-code/src/wiki/wiki-events.ts
@@ -0,0 +1,103 @@
+import { Effect, Option } from "effect"
+import { DeepAgentEvent } from "@deepagent-code/core/deepagent/deepagent-event"
+import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
+import type { DocType } from "@deepagent-code/core/deepagent/document-store"
+import * as Log from "@deepagent-code/core/util/log"
+
+/**
+ * FEAT-006 — wiki/knowledge change eventing (LMNEvents.WIKI_PAGE_CHANGED).
+ *
+ * The wiki domain was a pure event CONSUMER (the §L event-driven archiver) that never emitted
+ * anything; this module adds the producer side: a MINIMAL bus port + the best-effort publisher for
+ * `wiki.page.changed`, shared by both producers — WikiService.editKnowledge (governed human edit)
+ * and archiveSessionOnCompletion (execution-archive page persist).
+ *
+ * BUS PORT: `WikiEventPublisher` is the structural subset of the core bus the wiki needs (just
+ * `publish`) so the pure WikiService class never depends on the full bus service — tests wire an
+ * in-memory bus through the same port. `DeepAgentEventBus.Interface` satisfies it structurally.
+ *
+ * BENEFIT BOUNDARY (see the LMNEvents.WIKI_PAGE_CHANGED contract): federation knowledge graphs only
+ * ever consume released snapshots — this event is audit / UI notification / future cache
+ * invalidation only; no federation-side reaction is expected.
+ *
+ * LAYERING: `deepagent-code` (bridges the core bus vocabulary to the wiki producers).
+ */
+
+const log = Log.create({ service: "wiki-events" })
+
+// The minimal bus port the wiki producers need. Structurally satisfied by DeepAgentEventBus.Interface
+// (same port shape tests use with the in-memory bus layer).
+export type WikiEventPublisher = {
+  readonly publish: (input: DeepAgentEvent.PublishInput) => Effect.Effect<DeepAgentEvent.Event>
+}
+
+// One committed wiki page mutation. `archive` is present ONLY for execution-archive persists (the §L
+// archiver path) — it folds an archive marker into the idempotency key and labels the payload.
+export type WikiPageChange = {
+  readonly workspacePath?: string
+  readonly docId: string
+  readonly type: DocType
+  readonly version: number
+  readonly editor: string
+  readonly archive?: { readonly sessionID: string }
+}
+
+// FEAT-003 idempotency pattern: the idempotency key IS the write's natural dedup identity —
+// docId+version — so a redelivered write never double-publishes (the bus dedupes on the key).
+// Archive persists prefix `archive:` so an archive page can never collide with a human edit of the
+// same doc, and callers can tell the origin from the key alone. (Takes only the key-relevant slice
+// of WikiPageChange so tests/callers can derive a key without materializing the full payload.)
+export const wikiPageChangedIdempotencyKey = (change: {
+  readonly docId: string
+  readonly version: number
+  readonly archive?: { readonly sessionID: string }
+}): string =>
+  `wiki.page.changed:${change.archive ? "archive:" : ""}${change.docId}:${change.version}`
+
+// Publish wiki.page.changed for a COMMITTED page write. BEST-EFFORT by contract (mirrors FEAT-003's
+// publishPackChanged): the DocumentStore write already succeeded and stays authoritative — a bus
+// failure logs and is swallowed, never fails the edit/archive. `priority: "normal"` — a sheddable
+// observation, never a driver.
+export const publishWikiPageChanged = (bus: WikiEventPublisher, change: WikiPageChange): Effect.Effect<void> =>
+  bus
+    .publish({
+      type: LMNEvents.WIKI_PAGE_CHANGED,
+      source: "system",
+      workspaceID: change.workspacePath ?? "unknown",
+      actorID: change.editor,
+      idempotencyKey: wikiPageChangedIdempotencyKey(change),
+      priority: "normal",
+      payload: {
+        workspacePath: change.workspacePath,
+        docId: change.docId,
+        type: change.type,
+        version: change.version,
+        editor: change.editor,
+        ...(change.archive ? { archive: true, sessionID: change.archive.sessionID } : {}),
+      },
+    })
+    .pipe(
+      Effect.asVoid,
+      Effect.catchCause((cause) =>
+        Effect.sync(() =>
+          log.error("wiki.page.changed publish failed (page write already committed)", {
+            cause: String(cause),
+            docId: change.docId,
+            version: change.version,
+          }),
+        ),
+      ),
+    )
+
+// Resolve the bus port: an EXPLICITLY injected publisher wins (constructor/test wiring); otherwise
+// fall back to the DeepAgentEventBus.Service from the Effect environment when the surrounding
+// runtime provides it (the HTTP route runtime provides DeepAgentEventBus.defaultLayer — the same
+// seam the packs handlers use — so the unmodified wikiEdit handler gets eventing for free). No bus
+// anywhere → None → the producer silently degrades to the pre-FEAT-006 behavior (no event).
+export const resolveBus = (explicit?: WikiEventPublisher): Effect.Effect<Option.Option<WikiEventPublisher>> =>
+  explicit
+    ? Effect.succeed(Option.some(explicit))
+    : Effect.serviceOption(DeepAgentEventBus.Service).pipe(
+        Effect.map(Option.map((bus): WikiEventPublisher => bus)),
+      )
diff --git a/packages/deepagent-code/src/wiki/wiki-service.ts b/packages/deepagent-code/src/wiki/wiki-service.ts
index d4ebdad6..b4008948 100644
--- a/packages/deepagent-code/src/wiki/wiki-service.ts
+++ b/packages/deepagent-code/src/wiki/wiki-service.ts
@@ -1,4 +1,4 @@
-import { Effect, Schema } from "effect"
+import { Effect, Option, Schema } from "effect"
 import type {
   Confidence,
   Doc,
@@ -7,6 +7,7 @@ import type {
   DocumentStore,
   LinkRel,
 } from "@deepagent-code/core/deepagent/document-store"
+import * as WikiEvents from "./wiki-events"
 
 /**
  * V3.9 §B — Repo & Wiki（人向监督层）: the WikiService.
@@ -335,9 +336,21 @@ const renderMarkdown = (doc: Doc, editable: boolean): string => {
 export class WikiService {
   private readonly gate: WikiEditGate
 
+  /**
+   * FEAT-006 event ports (both optional — the service degrades to its pre-FEAT-006 behavior without
+   * them): `bus` is the wiki-events port a committed editKnowledge publishes wiki.page.changed
+   * through; `workspacePath` labels the event payload (openWikiService threads it from its input).
+   * When `bus` is absent the editKnowledge Effect still tries the DeepAgentEventBus.Service from
+   * its runtime environment (the HTTP route runtime provides it — same seam the packs handlers
+   * use), so the unmodified handler construction point gets eventing without signature changes.
+   */
   constructor(
     private readonly graph: WikiGraph,
     gate: WikiEditGate = DEFAULT_WIKI_EDIT_GATE,
+    private readonly ports: {
+      readonly bus?: WikiEvents.WikiEventPublisher
+      readonly workspacePath?: string
+    } = {},
   ) {
     this.gate = gate
   }
@@ -395,10 +408,46 @@ export class WikiService {
         source: "human",
         evidence_refs: [`human:${input.editor.id}${input.editor.name ? `:${input.editor.name}` : ""}`],
       })
-      return this.crossLinks(updated.id).pipe(Effect.map((crossLinks) => this.pageOf(updated, crossLinks)))
+      // FEAT-006 — AFTER the write commits, publish wiki.page.changed (best-effort, never fails the
+      // edit). Idempotency key = docId+version (wiki-events), so a redelivered edit never
+      // double-publishes. Self-loop note: the event-driven archiver consumes ONLY archive triggers
+      // (session.completed/goal.completed), and wiki.page.changed is not one — no consumer of this
+      // event writes back into the wiki, so there is no producer→event→archiver cascade.
+      return this.emitPageChanged({
+        docId: updated.id,
+        type: updated.type,
+        version: updated.version,
+        editor: input.editor.id,
+      }).pipe(
+        Effect.flatMap(() => this.crossLinks(updated.id)),
+        Effect.map((crossLinks) => this.pageOf(updated, crossLinks)),
+      )
     })
   }
 
+  // FEAT-006 — resolve the bus port (injected > Effect environment) and emit wiki.page.changed for
+  // a committed edit. Never fails: no bus wired → silent skip; publish error → logged + swallowed.
+  private emitPageChanged(change: {
+    readonly docId: string
+    readonly type: DocType
+    readonly version: number
+    readonly editor: string
+  }): Effect.Effect<void> {
+    return WikiEvents.resolveBus(this.ports.bus).pipe(
+      Effect.flatMap((bus) =>
+        Option.isNone(bus)
+          ? Effect.void
+          : WikiEvents.publishWikiPageChanged(bus.value, {
+              workspacePath: this.ports.workspacePath,
+              docId: change.docId,
+              type: change.type,
+              version: change.version,
+              editor: change.editor,
+            }),
+      ),
+    )
+  }
+
   // §B.5 crossLinks: docs↔code from graph edges. A code_symbol edge whose target no longer resolves
   // is marked stale (NOT dropped). Never fails.
   crossLinks(docId: string): Effect.Effect<WikiCrossLinks, never> {
diff --git a/packages/deepagent-code/src/worktree/index.ts b/packages/deepagent-code/src/worktree/index.ts
index 54ab1a8e..e89da88e 100644
--- a/packages/deepagent-code/src/worktree/index.ts
+++ b/packages/deepagent-code/src/worktree/index.ts
@@ -231,6 +231,12 @@ export interface Interface {
   readonly branchSummary: (input: RemoveInput) => Effect.Effect<BranchSummary, Error>
   // U3: merge the worktree branch back to the default branch (preflight + no auto-commit).
   readonly mergeBack: (input: RemoveInput) => Effect.Effect<MergeResult, Error>
+  /**
+   * RISK-002: automatic (no user confirmation) merge for the task tool's automatic write
+   * isolation success path. Unlike the interactive mergeBack it refuses a dirty parent checkout,
+   * commits the merge instead of staging it, and surfaces a failed abort as an error.
+   */
+  readonly mergeBackAutomatic: (input: RemoveInput) => Effect.Effect<MergeResult, Error>
   // L3c (subagent-control-plane-design.zh-CN.md §3.2.2)
   // Resolve an exact worktree identity without creating files, branches, or registrations. Callers
   // persist this plan before invoking ensureExact so crash recovery can adopt only the same resource.
@@ -921,6 +927,61 @@ export const layer: Layer.Layer<
       } satisfies MergeResult
     })
 
+    // RISK-002: merge-on-success for automatic task isolation. Safety rules (audit-mandated):
+    //  - parent checkout must be clean, otherwise the merge commit would swallow unrelated edits;
+    //  - the merge is committed (--no-ff) so success leaves a durable merge commit;
+    //  - on conflict the merge aborts and a FAILED abort is an error, never silently ignored;
+    //  - failure keeps the worktree (the caller's safeRemove refuses to delete unmerged work).
+    const mergeBackAutomatic = Effect.fn("Worktree.mergeBackAutomatic")(function* (input: RemoveInput) {
+      const ctx = yield* InstanceState.context
+      if (ctx.project.vcs !== "git")
+        return yield* new NotGitError({ message: "Worktrees are only supported for git projects" })
+      const entry = yield* resolveEntry(input.directory)
+      if (!entry?.branch) return yield* new MergeFailedError({ message: "Worktree has no branch to merge" })
+
+      const parentStatus = yield* safeGit(["status", "--porcelain"], ctx.worktree)
+      if (parentStatus.code !== 0 || parentStatus.text.split("\n").some((line) => line.trim()))
+        return {
+          merged: false,
+          conflicted: [],
+          message: "parent checkout has uncommitted changes; automatic merge skipped",
+        } satisfies MergeResult
+
+      const base = yield* gitSvc.defaultBranch(ctx.worktree).pipe(Effect.catch(() => Effect.succeed(undefined)))
+      if (!base) return yield* new MergeFailedError({ message: "Default branch not found" })
+
+      const merge = yield* git(["merge", "--no-ff", entry.branch, "-m", `Merge ${entry.branch} (task worktree)`], {
+        cwd: ctx.worktree,
+      })
+      if (merge.code !== 0) {
+        const conflicts = yield* safeGit(["diff", "--name-only", "--diff-filter=U"], ctx.worktree)
+        const files =
+          conflicts.code === 0
+            ? conflicts.text
+                .split("\n")
+                .map((l) => l.trim())
+                .filter(Boolean)
+            : []
+        const abort = yield* safeGit(["merge", "--abort"], ctx.worktree)
+        if (abort.code !== 0)
+          return yield* new MergeFailedError({
+            message: `Merge failed and merge --abort also failed; parent may be mid-merge: ${abort.stderr || abort.text}`,
+          })
+        return {
+          merged: false,
+          conflicted: files,
+          message: files.length
+            ? `Merge has conflicts in ${files.length} file(s); merge aborted, worktree preserved.`
+            : merge.stderr || merge.text || "Merge failed.",
+        } satisfies MergeResult
+      }
+      return {
+        merged: true,
+        conflicted: [],
+        message: `Merged ${entry.branch} into ${base.name}.`,
+      } satisfies MergeResult
+    })
+
     const planExact: Interface["planExact"] = Effect.fn("Worktree.planExact")(function* (input) {
       const ctx = yield* InstanceState.context
       if (ctx.project.vcs !== "git")
@@ -954,6 +1015,7 @@ export const layer: Layer.Layer<
       diff,
       branchSummary,
       mergeBack,
+      mergeBackAutomatic,
       planExact,
       // L3c: exact-match creation — no random-suffix fallback, caller holds receipt in task_run
       ensureExact: Effect.fn("Worktree.ensureExact")(function* (input: WorktreeExactInput) {
diff --git a/packages/deepagent-code/test/agent/pr-collaboration.test.ts b/packages/deepagent-code/test/agent/pr-collaboration.test.ts
index b61e6e3b..e8e32878 100644
--- a/packages/deepagent-code/test/agent/pr-collaboration.test.ts
+++ b/packages/deepagent-code/test/agent/pr-collaboration.test.ts
@@ -1,4 +1,4 @@
-import { describe, expect } from "bun:test"
+import { afterEach, describe, expect } from "bun:test"
 import fs from "fs/promises"
 import path from "path"
 import { Effect, Layer } from "effect"
@@ -8,7 +8,13 @@ import { PRQueue } from "@/agent/pr-queue"
 import { coordinator, ensureSessionBranch } from "@/agent/pr-collaboration"
 import { ReviewVerdictContract } from "@/collaboration/review-contract"
 import { testEffect } from "../lib/effect"
-import { TestInstance } from "../fixture/fixture"
+import { disposeAllInstances, TestInstance } from "../fixture/fixture"
+
+// Dispose any instances loaded into the process-wide AppRuntime instance
+// store so this file leaves no shared state for files that run after it.
+afterEach(async () => {
+  await disposeAllInstances()
+})
 
 const layer = Layer.mergeAll(Git.defaultLayer, Worktree.defaultLayer, PRQueue.layer).pipe(
   Layer.provideMerge(Worktree.defaultLayer),
diff --git a/packages/deepagent-code/test/cli/goal-worktree.test.ts b/packages/deepagent-code/test/cli/goal-worktree.test.ts
new file mode 100644
index 00000000..fd8a9fab
--- /dev/null
+++ b/packages/deepagent-code/test/cli/goal-worktree.test.ts
@@ -0,0 +1,66 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { cliIt } from "../lib/cli-process"
+
+// PARITY-004 long-tail: goal controls + worktree basics. All commands go
+// through the in-process instance httpapi (no attach needed), so a fresh
+// isolated home is enough.
+describe("deepagentCode goal (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "goal status reports no active goal (table + json)",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const table = yield* deepagentCode.spawn(["goal", "status", "ses_parity000001"])
+        deepagentCode.expectExit(table, 0, "goal status")
+        expect(table.stderr + table.stdout).toContain("No active goal for session ses_parity000001")
+
+        const json = yield* deepagentCode.spawn(["goal", "status", "ses_parity000001", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "goal status --format json")
+        const parsed = JSON.parse(json.stdout) as { sessionID: string; goal: unknown }
+        expect(parsed.sessionID).toBe("ses_parity000001")
+        expect(parsed.goal).toBeNull()
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "goal pause/resume/stop fail with a friendly error when no goal is active",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        for (const action of ["pause", "resume", "stop"]) {
+          const result = yield* deepagentCode.spawn(["goal", action, "ses_parity000002"])
+          expect(result.exitCode, `goal ${action} should fail`).not.toBe(0)
+          expect(result.stderr + result.stdout).toContain(`Could not ${action} the goal for session ses_parity000002`)
+        }
+      }),
+    90_000,
+  )
+})
+
+describe("deepagentCode worktree (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "worktree list prints an empty set for a fresh non-git home",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const table = yield* deepagentCode.spawn(["worktree", "list"])
+        deepagentCode.expectExit(table, 0, "worktree list")
+        expect(table.stdout).toContain("(empty)")
+
+        const json = yield* deepagentCode.spawn(["worktree", "list", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "worktree list --format json")
+        expect(JSON.parse(json.stdout)).toEqual([])
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "worktree remove fails with a clear error for an unknown directory",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const result = yield* deepagentCode.spawn(["worktree", "remove", "/tmp/not-a-worktree-parity"])
+        expect(result.exitCode).not.toBe(0)
+        expect(result.stderr + result.stdout).not.toBe("")
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/cli/help/__snapshots__/help-snapshots.test.ts.snap b/packages/deepagent-code/test/cli/help/__snapshots__/help-snapshots.test.ts.snap
index 7a6e70ea..607fe076 100644
--- a/packages/deepagent-code/test/cli/help/__snapshots__/help-snapshots.test.ts.snap
+++ b/packages/deepagent-code/test/cli/help/__snapshots__/help-snapshots.test.ts.snap
@@ -28,7 +28,12 @@ manage MCP (Model Context Protocol) servers
 
 Commands:
   deepagent-code mcp add [name]     add an MCP server
+  deepagent-code mcp remove <name>  remove an MCP server from the project or global config
+                                                                                       [aliases: rm]
+  deepagent-code mcp edit <name>    edit an existing MCP server's configuration
+                                    (url/env/header/command)
   deepagent-code mcp list           list MCP servers and their status                  [aliases: ls]
+  deepagent-code mcp catalog        list preset MCP servers from the vetted catalog (metadata only)
   deepagent-code mcp auth [name]    authenticate with an OAuth-enabled MCP server
   deepagent-code mcp logout [name]  remove OAuth credentials for an MCP server
   deepagent-code mcp debug <name>   debug OAuth connection for an MCP server
@@ -112,8 +117,14 @@ Options:
                                                                                             [number]
   -i, --interactive                   run in direct interactive split-footer mode
                                                                           [boolean] [default: false]
-      --dangerously-skip-permissions  auto-approve permissions that are not explicitly denied
-                                      (dangerous!)                        [boolean] [default: false]
+      --dangerously-skip-permissions  alias for --permission-mode full-access: auto-approve
+                                      permissions not explicitly denied (dangerous!)
+                                                                          [boolean] [default: false]
+      --permission-mode               permission auto-response mode: request rejects every prompt,
+                                      read-only rejects mutating tools
+                                      (edit/write/patch/bash/task/external_directory) and approves
+                                      the rest, full-access approves everything (dangerous!)
+                                           [string] [choices: "request", "read-only", "full-access"]
       --question-answer               answer unattended Question prompts in order; repeat once per
                                       question (otherwise auto-reject)                       [array]
       --demo                          enable direct interactive demo slash commands; pass one as the
@@ -236,7 +247,9 @@ Options:
                                                                           [boolean] [default: false]
       --mdns-domain  custom domain name for mDNS service (default: deepagent-code.local)
                                                           [string] [default: "deepagent-code.local"]
-      --cors         additional domains to allow for CORS                      [array] [default: []]"
+      --cors         additional domains to allow for CORS                      [array] [default: []]
+      --register     register this server with the local CLI daemon (writes state/server.json)
+                                                                          [boolean] [default: false]"
 `;
 
 exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode web --help 1`] = `
@@ -367,8 +380,10 @@ exports[`deepagentCode CLI help-text snapshots every documented command emits st
 manage sessions
 
 Commands:
-  deepagent-code session list                list sessions
-  deepagent-code session delete <sessionID>  delete a session
+  deepagent-code session list                        list sessions
+  deepagent-code session delete <sessionID>          delete a session
+  deepagent-code session rename <sessionID> <title>  rename a session
+  deepagent-code session archive <sessionID>         archive a session (or restore it with --undo)
 
 Options:
   -h, --help        show help                                                              [boolean]
@@ -417,6 +432,126 @@ Options:
       --format      Output format                 [string] [choices: "json", "tsv"] [default: "tsv"]"
 `;
 
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode goal --help 1`] = `
+"deepagent-code goal
+
+inspect and control the goal loop of a session
+
+Commands:
+  deepagent-code goal status <sessionID>  show the active goal of a session
+  deepagent-code goal pause <sessionID>   pause the goal loop of a session
+  deepagent-code goal resume <sessionID>  resume the goal loop of a session
+  deepagent-code goal stop <sessionID>    stop the goal loop of a session
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode worktree --help 1`] = `
+"deepagent-code worktree
+
+manage git worktrees for the current project
+
+Commands:
+  deepagent-code worktree list                list worktrees of the current project    [aliases: ls]
+  deepagent-code worktree create              create a new worktree
+  deepagent-code worktree remove <directory>  remove a worktree (fail-closed unless --force)
+                                                                                       [aliases: rm]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode oversight --help 1`] = `
+"deepagent-code oversight
+
+inspect the agent oversight plane (approvals, metrics)
+
+Commands:
+  deepagent-code oversight list     list pending approval queue items                  [aliases: ls]
+  deepagent-code oversight metrics  show oversight metrics (DLQ, success rate, conflict rate)
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode panel --help 1`] = `
+"deepagent-code panel
+
+inspect the Expert Panel state
+
+Commands:
+  deepagent-code panel status <sessionID>  show the effective Expert Panel armed state for a session
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode review --help 1`] = `
+"deepagent-code review
+
+inspect DeepAgent run reviews
+
+Commands:
+  deepagent-code review list  list recent DeepAgent run reviews                        [aliases: ls]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode wiki --help 1`] = `
+"deepagent-code wiki
+
+browse and search the project Wiki
+
+Commands:
+  deepagent-code wiki list           list Wiki pages                                   [aliases: ls]
+  deepagent-code wiki search <text>  full-text search over the Wiki
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode packs --help 1`] = `
+"deepagent-code packs
+
+inspect domain packs
+
+Commands:
+  deepagent-code packs list  list active domain packs (or the full catalog with --all) [aliases: ls]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
 exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode mcp list --help 1`] = `
 "deepagent-code mcp list
 
@@ -595,6 +730,328 @@ Options:
       --pure        run without external plugins                                           [boolean]"
 `;
 
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode session rename --help 1`] = `
+"deepagent-code session rename <sessionID> <title>
+
+rename a session
+
+Positionals:
+  sessionID  session ID to rename                                                [string] [required]
+  title      new title for the session                                           [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode session archive --help 1`] = `
+"deepagent-code session archive <sessionID>
+
+archive a session (or restore it with --undo)
+
+Positionals:
+  sessionID  session ID to archive                                               [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --undo        restore an archived session                           [boolean] [default: false]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode mcp edit --help 1`] = `
+"deepagent-code mcp edit <name>
+
+edit an existing MCP server's configuration (url/env/header/command)
+
+Positionals:
+  name  name of the MCP server                                                   [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --url         new URL for a remote MCP server                                         [string]
+      --env         environment variable for a local MCP server (KEY=VALUE, merged)          [array]
+      --header      HTTP header for a remote MCP server (KEY=VALUE, merged)                  [array]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode goal status --help 1`] = `
+"deepagent-code goal status <sessionID>
+
+show the active goal of a session
+
+Positionals:
+  sessionID  session ID                                                          [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode goal pause --help 1`] = `
+"deepagent-code goal pause <sessionID>
+
+pause the goal loop of a session
+
+Positionals:
+  sessionID  session ID                                                          [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode goal resume --help 1`] = `
+"deepagent-code goal resume <sessionID>
+
+resume the goal loop of a session
+
+Positionals:
+  sessionID  session ID                                                          [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode goal stop --help 1`] = `
+"deepagent-code goal stop <sessionID>
+
+stop the goal loop of a session
+
+Positionals:
+  sessionID  session ID                                                          [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode worktree list --help 1`] = `
+"deepagent-code worktree list
+
+list worktrees of the current project
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode worktree create --help 1`] = `
+"deepagent-code worktree create
+
+create a new worktree
+
+Options:
+  -h, --help           show help                                                           [boolean]
+  -v, --version        show version number                                                 [boolean]
+      --print-logs     print logs to stderr                                                [boolean]
+      --log-level      log level                [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure           run without external plugins                                        [boolean]
+      --attach         attach to a running server (e.g. http://localhost:4096)              [string]
+      --password       password for the attached server                                     [string]
+      --username       username for the attached server                                     [string]
+      --format         output format          [string] [choices: "table", "json"] [default: "table"]
+      --name           worktree/branch name (default: auto-generated)                       [string]
+      --start-command  additional startup script to run after the project's start command   [string]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode worktree remove --help 1`] = `
+"deepagent-code worktree remove <directory>
+
+remove a worktree (fail-closed unless --force)
+
+Positionals:
+  directory  worktree directory to remove                                        [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --force       remove even if the worktree has uncommitted changes   [boolean] [default: false]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode oversight list --help 1`] = `
+"deepagent-code oversight list
+
+list pending approval queue items
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode oversight metrics --help 1`] = `
+"deepagent-code oversight metrics
+
+show oversight metrics (DLQ, success rate, conflict rate)
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]
+      --from        window start (epoch ms)                                                 [string]
+      --to          window end (epoch ms)                                                   [string]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode panel status --help 1`] = `
+"deepagent-code panel status <sessionID>
+
+show the effective Expert Panel armed state for a session
+
+Positionals:
+  sessionID  session ID                                                          [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode review list --help 1`] = `
+"deepagent-code review list
+
+list recent DeepAgent run reviews
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode wiki list --help 1`] = `
+"deepagent-code wiki list
+
+list Wiki pages
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]
+      --type        filter by page type                                                     [string]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode wiki search --help 1`] = `
+"deepagent-code wiki search <text>
+
+full-text search over the Wiki
+
+Positionals:
+  text  search text                                                              [string] [required]
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --type        filter by page type                                                     [string]
+      --scope       filter by scope                                                         [string]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]"
+`;
+
+exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode packs list --help 1`] = `
+"deepagent-code packs list
+
+list active domain packs (or the full catalog with --all)
+
+Options:
+  -h, --help        show help                                                              [boolean]
+  -v, --version     show version number                                                    [boolean]
+      --print-logs  print logs to stderr                                                   [boolean]
+      --log-level   log level                   [string] [choices: "DEBUG", "INFO", "WARN", "ERROR"]
+      --pure        run without external plugins                                           [boolean]
+      --attach      attach to a running server (e.g. http://localhost:4096)                 [string]
+      --password    password for the attached server                                        [string]
+      --username    username for the attached server                                        [string]
+      --format      output format             [string] [choices: "table", "json"] [default: "table"]
+      --all         show the full installed catalog instead of the active set
+                                                                          [boolean] [default: false]"
+`;
+
 exports[`deepagentCode CLI help-text snapshots every documented command emits stable help text: deepagentCode github install --help 1`] = `
 "deepagent-code github install
 
diff --git a/packages/deepagent-code/test/cli/help/help-snapshots.test.ts b/packages/deepagent-code/test/cli/help/help-snapshots.test.ts
index 6bee92d6..d9d727bd 100644
--- a/packages/deepagent-code/test/cli/help/help-snapshots.test.ts
+++ b/packages/deepagent-code/test/cli/help/help-snapshots.test.ts
@@ -64,6 +64,13 @@ const TOP_LEVEL = [
   "session",
   "plugin",
   "db",
+  "goal",
+  "worktree",
+  "oversight",
+  "panel",
+  "review",
+  "wiki",
+  "packs",
 ] as const
 
 // Subcommands worth pinning. Not exhaustive — the goal is one snapshot per
@@ -81,6 +88,23 @@ const SUBCOMMANDS = [
   ["agent", "list"],
   ["session", "list"],
   ["session", "delete"],
+  ["session", "rename"],
+  ["session", "archive"],
+  ["mcp", "edit"],
+  ["goal", "status"],
+  ["goal", "pause"],
+  ["goal", "resume"],
+  ["goal", "stop"],
+  ["worktree", "list"],
+  ["worktree", "create"],
+  ["worktree", "remove"],
+  ["oversight", "list"],
+  ["oversight", "metrics"],
+  ["panel", "status"],
+  ["review", "list"],
+  ["wiki", "list"],
+  ["wiki", "search"],
+  ["packs", "list"],
   ["github", "install"],
   ["github", "run"],
   ["db", "path"],
diff --git a/packages/deepagent-code/test/cli/mcp-catalog.test.ts b/packages/deepagent-code/test/cli/mcp-catalog.test.ts
new file mode 100644
index 00000000..e2c35012
--- /dev/null
+++ b/packages/deepagent-code/test/cli/mcp-catalog.test.ts
@@ -0,0 +1,51 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { cliIt } from "../lib/cli-process"
+
+// PARITY-004 quick-win regression: `mcp catalog` mirrors the GUI preset catalog
+// (groups/mcp.ts `catalog` endpoint consumed by dialog-add-mcp.tsx). Listing is
+// metadata only — nothing connects — so the fixture needs no LLM traffic.
+describe("deepagentCode mcp catalog (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "lists the vetted preset catalog as JSON",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const result = yield* deepagentCode.spawn(["mcp", "catalog", "--format", "json"])
+        deepagentCode.expectExit(result, 0)
+
+        const entries = JSON.parse(result.stdout) as Array<{
+          id: string
+          title: string
+          transport: string
+          riskTier: string
+          credentials: Array<{ key: string }>
+        }>
+        const ids = entries.map((entry) => entry.id)
+        expect(ids).toContain("github")
+        expect(ids).toContain("filesystem")
+
+        for (const entry of entries) {
+          expect(["local", "remote"]).toContain(entry.transport)
+          expect(["read_only", "write_guarded", "external_fetch"]).toContain(entry.riskTier)
+          expect(entry.title.length).toBeGreaterThan(0)
+        }
+
+        const github = entries.find((entry) => entry.id === "github")!
+        expect(github.credentials.some((credential) => credential.key.length > 0)).toBe(true)
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "prints a human-readable table by default",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const result = yield* deepagentCode.spawn(["mcp", "catalog"])
+        deepagentCode.expectExit(result, 0)
+        const output = result.stdout + result.stderr
+        expect(output).toContain("github")
+        expect(output).toContain("GitHub")
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/cli/mcp-edit.test.ts b/packages/deepagent-code/test/cli/mcp-edit.test.ts
new file mode 100644
index 00000000..6480de86
--- /dev/null
+++ b/packages/deepagent-code/test/cli/mcp-edit.test.ts
@@ -0,0 +1,137 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { parse } from "jsonc-parser"
+import { mkdir, readFile, writeFile } from "node:fs/promises"
+import path from "path"
+import { cliIt } from "../lib/cli-process"
+
+// PARITY-004 long-tail: `mcp edit` rewrites an EXISTING server entry in place
+// (updateMcpConfig semantics). Like add/remove, edits must preserve comments
+// and sibling keys (jsonc-parser field-level modify).
+describe("deepagentCode mcp edit (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "updates a remote server url/header while preserving comments and siblings",
+    ({ home, deepagentCode }) =>
+      Effect.gen(function* () {
+        const configPath = path.join(home, ".deepagent", "code", "config.jsonc")
+        const seeded = [
+          "{",
+          "  // user comment must survive the edit",
+          '  "theme": "dark",',
+          '  "mcp": {',
+          '    "github": {',
+          '      "type": "remote",',
+          '      "url": "https://old.example.com/mcp",',
+          '      "headers": { "x-token": "keep-me" }',
+          "    },",
+          '    "keeper": {',
+          '      "type": "local",',
+          '      "command": ["echo", "hi"]',
+          "    }",
+          "  }",
+          "}",
+        ].join("\n")
+        yield* Effect.promise(async () => {
+          await mkdir(path.dirname(configPath), { recursive: true })
+          await writeFile(configPath, seeded, "utf8")
+        })
+
+        const result = yield* deepagentCode.spawn([
+          "mcp",
+          "edit",
+          "github",
+          "--url",
+          "https://new.example.com/mcp",
+          "--header",
+          "Authorization=Bearer abc",
+        ])
+        deepagentCode.expectExit(result, 0)
+
+        const text = yield* Effect.promise(() => readFile(configPath, "utf8"))
+        expect(text).toContain("// user comment must survive the edit")
+        const config = parse(text)
+        expect(config.theme).toBe("dark")
+        expect(config.mcp.github).toEqual({
+          type: "remote",
+          url: "https://new.example.com/mcp",
+          headers: { "x-token": "keep-me", Authorization: "Bearer abc" },
+        })
+        expect(config.mcp.keeper).toEqual({ type: "local", command: ["echo", "hi"] })
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "merges environment into a local server defined in the project config",
+    ({ home, deepagentCode }) =>
+      Effect.gen(function* () {
+        const configPath = path.join(home, "deepagent-code.json")
+        const seeded = [
+          "{",
+          '  "mcp": {',
+          '    "fs-server": {',
+          '      "type": "local",',
+          '      "command": ["echo", "hi"],',
+          '      "environment": { "EXISTING": "1" }',
+          "    }",
+          "  }",
+          "}",
+        ].join("\n")
+        yield* Effect.promise(() => writeFile(configPath, seeded, "utf8"))
+
+        const result = yield* deepagentCode.spawn(["mcp", "edit", "fs-server", "--env", "DEBUG=true"])
+        deepagentCode.expectExit(result, 0)
+
+        const config = parse(yield* Effect.promise(() => readFile(configPath, "utf8")))
+        expect(config.mcp["fs-server"]).toEqual({
+          type: "local",
+          command: ["echo", "hi"],
+          environment: { EXISTING: "1", DEBUG: "true" },
+        })
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "rejects edits that do not match the server type",
+    ({ home, deepagentCode }) =>
+      Effect.gen(function* () {
+        const configPath = path.join(home, "deepagent-code.json")
+        const seeded = [
+          "{",
+          '  "mcp": {',
+          '    "local-only": {',
+          '      "type": "local",',
+          '      "command": ["echo", "hi"]',
+          "    }",
+          "  }",
+          "}",
+        ].join("\n")
+        yield* Effect.promise(() => writeFile(configPath, seeded, "utf8"))
+
+        const result = yield* deepagentCode.spawn(["mcp", "edit", "local-only", "--url", "https://example.com/mcp"])
+        expect(result.exitCode).not.toBe(0)
+        expect(result.stderr + result.stdout).toContain("--url/--header only apply to remote servers")
+
+        // The file must be untouched.
+        const config = parse(yield* Effect.promise(() => readFile(configPath, "utf8")))
+        expect(config.mcp["local-only"]).toEqual({ type: "local", command: ["echo", "hi"] })
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "fails with a clear error when the server is not configured anywhere",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const result = yield* deepagentCode.spawn(["mcp", "edit", "ghost", "--url", "https://example.com/mcp"])
+        expect(result.exitCode).not.toBe(0)
+        expect(result.stderr + result.stdout).toContain("MCP server not found: ghost")
+
+        const noChanges = yield* deepagentCode.spawn(["mcp", "edit", "ghost"])
+        expect(noChanges.exitCode).not.toBe(0)
+        expect(noChanges.stderr + noChanges.stdout).toContain("No changes provided")
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/cli/mcp-remove.test.ts b/packages/deepagent-code/test/cli/mcp-remove.test.ts
new file mode 100644
index 00000000..e0c8bdfb
--- /dev/null
+++ b/packages/deepagent-code/test/cli/mcp-remove.test.ts
@@ -0,0 +1,88 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { parse } from "jsonc-parser"
+import { mkdir, readFile, writeFile } from "node:fs/promises"
+import path from "path"
+import { cliIt } from "../lib/cli-process"
+
+// PARITY-004 quick-win regression: `mcp remove` mirrors the GUI delete button
+// (dialog-select-mcp.tsx → server-sync removeMcpConfig). The server definition
+// lives in a jsonc config file, so removal must preserve comments + siblings.
+describe("deepagentCode mcp remove (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "removes a server from the global config while preserving comments and siblings",
+    ({ home, deepagentCode }) =>
+      Effect.gen(function* () {
+        const configPath = path.join(home, ".deepagent", "code", "config.jsonc")
+        const seeded = [
+          "{",
+          "  // user comment must survive the removal",
+          '  "theme": "dark",',
+          '  "mcp": {',
+          '    "github": {',
+          '      "type": "remote",',
+          '      "url": "https://example.com/mcp"',
+          "    },",
+          '    "keeper": {',
+          '      "type": "local",',
+          '      "command": ["echo", "hi"]',
+          "    }",
+          "  }",
+          "}",
+        ].join("\n")
+        yield* Effect.promise(async () => {
+          await mkdir(path.dirname(configPath), { recursive: true })
+          await writeFile(configPath, seeded, "utf8")
+        })
+
+        const result = yield* deepagentCode.spawn(["mcp", "remove", "github"])
+        deepagentCode.expectExit(result, 0)
+
+        const text = yield* Effect.promise(() => readFile(configPath, "utf8"))
+        expect(text).toContain("// user comment must survive the removal")
+        const config = parse(text)
+        expect(config.theme).toBe("dark")
+        expect(config.mcp.github).toBeUndefined()
+        expect(config.mcp.keeper).toEqual({ type: "local", command: ["echo", "hi"] })
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "removes a server defined in the project config",
+    ({ home, deepagentCode }) =>
+      Effect.gen(function* () {
+        // spawn() runs with cwd=home, so the project candidates resolve under home.
+        const configPath = path.join(home, "deepagent-code.json")
+        const seeded = [
+          "{",
+          '  "mcp": {',
+          '    "project-server": {',
+          '      "type": "remote",',
+          '      "url": "https://project.example.com/mcp"',
+          "    }",
+          "  }",
+          "}",
+        ].join("\n")
+        yield* Effect.promise(() => writeFile(configPath, seeded, "utf8"))
+
+        const result = yield* deepagentCode.spawn(["mcp", "remove", "project-server"])
+        deepagentCode.expectExit(result, 0)
+
+        const config = parse(yield* Effect.promise(() => readFile(configPath, "utf8")))
+        expect(config.mcp ?? {}).toEqual({})
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "fails with a clear error when the server is not configured anywhere",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const result = yield* deepagentCode.spawn(["mcp", "remove", "ghost"])
+        expect(result.exitCode).not.toBe(0)
+        expect(result.stderr + result.stdout).toContain("MCP server not found: ghost")
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/cli/query-commands.test.ts b/packages/deepagent-code/test/cli/query-commands.test.ts
new file mode 100644
index 00000000..6d50a132
--- /dev/null
+++ b/packages/deepagent-code/test/cli/query-commands.test.ts
@@ -0,0 +1,86 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { cliIt } from "../lib/cli-process"
+
+// PARITY-004 long-tail: the unified "query command" template — instance SDK
+// client + table/json output. Each command gets at least one subprocess test
+// against a fresh isolated home (in-process httpapi, no server needed).
+describe("deepagentCode query commands (non-interactive subprocess)", () => {
+  cliIt.concurrent(
+    "oversight list returns an empty approval queue on a fresh home",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const table = yield* deepagentCode.spawn(["oversight", "list"])
+        deepagentCode.expectExit(table, 0, "oversight list")
+        expect(table.stdout).toContain("(empty)")
+
+        const json = yield* deepagentCode.spawn(["oversight", "list", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "oversight list --format json")
+        expect(JSON.parse(json.stdout)).toEqual([])
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "panel status resolves the global default for any session",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const json = yield* deepagentCode.spawn(["panel", "status", "ses_parity000003", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "panel status --format json")
+        const parsed = JSON.parse(json.stdout) as { sessionID: string; armed: boolean; explicit: boolean; rounds: string }
+        expect(parsed.sessionID).toBe("ses_parity000003")
+        expect(typeof parsed.armed).toBe("boolean")
+        expect(parsed.explicit).toBe(false)
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "review list returns an empty set on a fresh home",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const json = yield* deepagentCode.spawn(["review", "list", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "review list --format json")
+        expect(JSON.parse(json.stdout)).toEqual([])
+      }),
+    60_000,
+  )
+
+  cliIt.concurrent(
+    "wiki list/search return well-formed results (wiki flag on by default)",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const list = yield* deepagentCode.spawn(["wiki", "list", "--format", "json"])
+        deepagentCode.expectExit(list, 0, "wiki list --format json")
+        const pages = JSON.parse(list.stdout) as Array<{ docId: string; type: string; title: string }>
+        expect(Array.isArray(pages)).toBe(true)
+        // The builtin skill pack projects durable skill pages even on a fresh home.
+        expect(pages.length).toBeGreaterThan(0)
+        expect(pages[0]!.docId).toBeString()
+
+        const search = yield* deepagentCode.spawn(["wiki", "search", "query", "--format", "json"])
+        deepagentCode.expectExit(search, 0, "wiki search --format json")
+        const hits = JSON.parse(search.stdout) as Array<{ docId: string; score: number }>
+        expect(Array.isArray(hits)).toBe(true)
+      }),
+    90_000,
+  )
+
+  cliIt.concurrent(
+    "packs list shows the active set with a snapshot id",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const json = yield* deepagentCode.spawn(["packs", "list", "--format", "json"])
+        deepagentCode.expectExit(json, 0, "packs list --format json")
+        const parsed = JSON.parse(json.stdout) as { packs: Array<{ id: string }>; snapshotId: string }
+        expect(Array.isArray(parsed.packs)).toBe(true)
+        expect(parsed.snapshotId).toBeString()
+
+        const all = yield* deepagentCode.spawn(["packs", "list", "--all", "--format", "json"])
+        deepagentCode.expectExit(all, 0, "packs list --all --format json")
+        const catalog = JSON.parse(all.stdout) as { packs: Array<{ id: string; builtin: boolean }> }
+        expect(catalog.packs.length).toBeGreaterThan(0)
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/cli/run/permission-mode.test.ts b/packages/deepagent-code/test/cli/run/permission-mode.test.ts
new file mode 100644
index 00000000..6a025255
--- /dev/null
+++ b/packages/deepagent-code/test/cli/run/permission-mode.test.ts
@@ -0,0 +1,83 @@
+// Unit tests for the CLI permission tri-state auto-responder (PARITY-002).
+// The interactive path keeps the manual prompt UI; these cover the
+// non-interactive `deepagent-code run` auto-reply policy.
+import { describe, expect, test } from "bun:test"
+import { MUTATING_PERMISSIONS } from "@deepagent-code/core/permission/mutating"
+import {
+  PERMISSION_MODES,
+  permissionReplyFor,
+  resolvePermissionMode,
+} from "@/cli/cmd/run/permission-mode"
+
+const READ_PERMISSIONS = ["read", "glob", "grep", "list", "lsp", "webfetch", "websearch", "todowrite"]
+
+describe("run --permission-mode resolution", () => {
+  test("defaults to request mode (legacy reject-everything behavior)", () => {
+    expect(resolvePermissionMode({})).toBe("request")
+    expect(resolvePermissionMode({ "permission-mode": "request" })).toBe("request")
+  })
+
+  test("accepts every documented mode", () => {
+    for (const mode of PERMISSION_MODES) {
+      expect(resolvePermissionMode({ "permission-mode": mode })).toBe(mode)
+    }
+  })
+
+  test("--dangerously-skip-permissions resolves to full-access (alias)", () => {
+    expect(resolvePermissionMode({ "dangerously-skip-permissions": true })).toBe("full-access")
+    expect(
+      resolvePermissionMode({ "dangerously-skip-permissions": true, "permission-mode": "full-access" }),
+    ).toBe("full-access")
+  })
+
+  test("rejects contradictory flag combinations and unknown modes", () => {
+    expect(() =>
+      resolvePermissionMode({ "dangerously-skip-permissions": true, "permission-mode": "request" }),
+    ).toThrow("alias for --permission-mode full-access")
+    expect(() =>
+      resolvePermissionMode({ "dangerously-skip-permissions": true, "permission-mode": "read-only" }),
+    ).toThrow("alias for --permission-mode full-access")
+    expect(() => resolvePermissionMode({ "permission-mode": "yolo" })).toThrow(
+      "--permission-mode must be one of: request, read-only, full-access",
+    )
+  })
+})
+
+describe("run --permission-mode auto-replies", () => {
+  test("request mode rejects every permission (backwards-compatible default)", () => {
+    for (const permission of [...MUTATING_PERMISSIONS, ...READ_PERMISSIONS]) {
+      expect(permissionReplyFor("request", permission)).toBe("reject")
+    }
+  })
+
+  test("read-only mode rejects exactly the mutating set and approves read-style tools", () => {
+    expect([...MUTATING_PERMISSIONS]).toEqual(
+      expect.arrayContaining(["edit", "write", "patch", "bash", "task", "external_directory"]),
+    )
+    for (const permission of MUTATING_PERMISSIONS) {
+      expect(permissionReplyFor("read-only", permission)).toBe("reject")
+    }
+    for (const permission of READ_PERMISSIONS) {
+      expect(permissionReplyFor("read-only", permission)).toBe("once")
+    }
+  })
+
+  test("full-access mode approves every permission once (skip semantics)", () => {
+    for (const permission of [...MUTATING_PERMISSIONS, ...READ_PERMISSIONS]) {
+      expect(permissionReplyFor("full-access", permission)).toBe("once")
+    }
+  })
+})
+
+describe("mutating set consistency across consumers", () => {
+  test("app read-only guard and CLI read-only mode share the same core constant", async () => {
+    // packages/app re-exports the shared constant; a divergence here would
+    // mean the GUI and CLI read-only modes disagree on what is denied.
+    const app = await import("../../../../app/src/context/permission-auto-respond")
+    expect(app.MUTATING_PERMISSIONS).toBe(MUTATING_PERMISSIONS)
+    for (const permission of MUTATING_PERMISSIONS) {
+      expect(app.isMutatingPermission(permission)).toBe(true)
+      expect(permissionReplyFor("read-only", permission)).toBe("reject")
+    }
+  })
+})
diff --git a/packages/deepagent-code/test/cli/run/run-process.test.ts b/packages/deepagent-code/test/cli/run/run-process.test.ts
index 87811b5e..833a39c1 100644
--- a/packages/deepagent-code/test/cli/run/run-process.test.ts
+++ b/packages/deepagent-code/test/cli/run/run-process.test.ts
@@ -84,6 +84,43 @@ describe("deepagentCode run (non-interactive subprocess)", () => {
     60_000,
   )
 
+  // PARITY-002: --permission-mode read-only mirrors the GUI read-only
+  // directory mode — mutating permissions are auto-rejected. In this harness
+  // the session root differs from the tmp home, so file tools surface the
+  // external_directory permission, which is part of the shared mutating set.
+  cliIt.concurrent(
+    "read-only permission mode rejects mutating permissions",
+    ({ llm, home, deepagentCode }) =>
+      Effect.gen(function* () {
+        yield* llm.tool("write", { filePath: path.join(home, "mutated.txt"), content: "nope\n" })
+        yield* llm.text("read-only flow completed")
+
+        const result = yield* deepagentCode.run("try to mutate", {
+          format: "json",
+          extraArgs: ["--permission-mode", "read-only"],
+        })
+        deepagentCode.expectExit(result, 0)
+
+        const events = deepagentCode.parseJsonEvents(result.stdout)
+        const permissions = events.filter((event) => event.type === "permission")
+        expect(permissions.length).toBeGreaterThan(0)
+        for (const event of permissions) {
+          expect(event.reply).toBe("reject")
+        }
+        expect(permissions).toContainEqual(
+          expect.objectContaining({
+            type: "permission",
+            reply: "reject",
+            request: expect.objectContaining({ permission: "external_directory" }),
+          }),
+        )
+        // The rejection must be effective: no mutation reached the disk.
+        const mutated = yield* Effect.promise(() => Bun.file(path.join(home, "mutated.txt")).exists())
+        expect(mutated).toBe(false)
+      }),
+    60_000,
+  )
+
   // Regression for #27371: an unknown model used to hang the process forever
   // waiting on a session.status === idle event that never arrived. The fix
   // makes the SDK call surface an error promptly so the process exits nonzero.
diff --git a/packages/deepagent-code/test/cli/serve/serve-process.test.ts b/packages/deepagent-code/test/cli/serve/serve-process.test.ts
index bdbdf1f8..6d7375e9 100644
--- a/packages/deepagent-code/test/cli/serve/serve-process.test.ts
+++ b/packages/deepagent-code/test/cli/serve/serve-process.test.ts
@@ -8,6 +8,8 @@
 import { describe, expect } from "bun:test"
 import { Effect } from "effect"
 import { HttpClient } from "effect/unstable/http"
+import { access, readFile } from "node:fs/promises"
+import path from "node:path"
 import { cliIt } from "../../lib/cli-process"
 
 describe("deepagentCode serve (subprocess)", () => {
@@ -58,4 +60,64 @@ describe("deepagentCode serve (subprocess)", () => {
       }),
     60_000,
   )
+  // PARITY-003 (Wave 0): `serve --register` writes the daemon registration
+  // protocol (state/server.json + SIGTERM cleanup) so the new CLI daemon can
+  // mount this legacy server. Covers the file contents, the authenticated
+  // health probe, and removal on shutdown.
+  cliIt.live(
+    "--register writes the daemon registration and removes it on SIGTERM",
+    ({ deepagentCode, home }) =>
+      Effect.gen(function* () {
+        const password = "parity-003-test-secret"
+        const file = path.join(home, ".deepagent", "code", "state", "server.json")
+        const server = yield* deepagentCode.serve({
+          extraArgs: ["--register"],
+          env: { DEEPAGENT_CODE_SERVER_PASSWORD: password },
+        })
+
+        // Registration appears shortly after the listening sentinel.
+        const registration = yield* Effect.promise(async () => {
+          for (let i = 0; i < 100; i++) {
+            try {
+              return JSON.parse(await readFile(file, "utf8")) as {
+                id: string
+                version: string
+                url: string
+                pid: number
+              }
+            } catch {
+              await new Promise((resolve) => setTimeout(resolve, 50))
+            }
+          }
+          throw new Error("server.json was not written within 5s of listening")
+        })
+        expect(registration.url).toBe(server.url)
+        expect(registration.pid).toBeGreaterThan(0)
+        expect(registration.id).toBeTruthy()
+        expect(registration.version).toBeTruthy()
+
+        // The daemon's legacy health probe: GET /global/health with Basic auth.
+        const auth = `Basic ${Buffer.from(`deepagent-code:${password}`).toString("base64")}`
+        const healthy = yield* Effect.promise(() =>
+          fetch(`${server.url}/global/health`, { headers: { Authorization: auth } }),
+        )
+        expect(healthy.status).toBe(200)
+        expect(yield* Effect.promise(() => healthy.json())).toMatchObject({ healthy: true })
+        const rejected = yield* Effect.promise(() => fetch(`${server.url}/global/health`))
+        expect(rejected.status).toBe(401)
+
+        // SIGTERM must remove the registration it owns and exit.
+        server.kill()
+        const code = yield* Effect.promise(() => server.exited)
+        expect(typeof code === "number" || code === null).toBe(true)
+        const removed = yield* Effect.promise(() =>
+          access(file).then(
+            () => false,
+            () => true,
+          ),
+        )
+        expect(removed).toBe(true)
+      }),
+    60_000,
+  )
 })
diff --git a/packages/deepagent-code/test/cli/session-rename-archive.test.ts b/packages/deepagent-code/test/cli/session-rename-archive.test.ts
new file mode 100644
index 00000000..ffc948e7
--- /dev/null
+++ b/packages/deepagent-code/test/cli/session-rename-archive.test.ts
@@ -0,0 +1,74 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import path from "path"
+import { cliIt, testModelID } from "../lib/cli-process"
+
+// PARITY-004 long-tail: `session rename` / `session archive` mirror the GUI
+// session context menu (httpapi session update → setTitle / setArchived). The
+// CLI drives the same Session.Service through the local instance.
+describe("deepagentCode session rename/archive (non-interactive subprocess)", () => {
+  cliIt.live(
+    "renames, archives, and restores a session",
+    ({ deepagentCode, home }) =>
+      Effect.gen(function* () {
+        // test/preload.ts pins DEEPAGENT_CODE_DB=:memory:, which gives every
+        // spawned process its own DB. Point the whole flow at a shared file DB
+        // so the session created by `run` is visible to the session commands.
+        const dbEnv = { DEEPAGENT_CODE_DB: path.join(home, "cli.db") }
+
+        // Create one session through the normal run path so the list is non-empty.
+        const run = yield* deepagentCode.run("hello", { model: testModelID, env: dbEnv })
+        deepagentCode.expectExit(run, 0, "run")
+
+        const listOnce = yield* deepagentCode.spawn(["session", "list", "--format", "json"], { env: dbEnv })
+        deepagentCode.expectExit(listOnce, 0, "session list")
+        const sessions = JSON.parse(listOnce.stdout) as Array<{ id: string; title: string; archived: number | null }>
+        expect(sessions.length).toBeGreaterThan(0)
+        const sessionID = sessions[0].id
+
+        // rename (UI.println writes to stderr)
+        const rename = yield* deepagentCode.spawn(["session", "rename", sessionID, "CLI parity title"], { env: dbEnv })
+        deepagentCode.expectExit(rename, 0, "session rename")
+        expect(rename.stderr + rename.stdout).toContain(`Session ${sessionID} renamed to "CLI parity title"`)
+
+        const listAfterRename = yield* deepagentCode.spawn(["session", "list", "--format", "json"], { env: dbEnv })
+        const afterRename = JSON.parse(listAfterRename.stdout) as Array<{ id: string; title: string }>
+        expect(afterRename.find((s) => s.id === sessionID)?.title).toBe("CLI parity title")
+
+        // archive
+        const archive = yield* deepagentCode.spawn(["session", "archive", sessionID], { env: dbEnv })
+        deepagentCode.expectExit(archive, 0, "session archive")
+        expect(archive.stderr + archive.stdout).toContain(`Session ${sessionID} archived`)
+
+        const listAfterArchive = yield* deepagentCode.spawn(["session", "list", "--format", "json"], { env: dbEnv })
+        const afterArchive = JSON.parse(listAfterArchive.stdout) as Array<{ id: string; archived: number | null }>
+        const archivedEntry = afterArchive.find((s) => s.id === sessionID)
+        expect(archivedEntry?.archived).toBeNumber()
+
+        // restore
+        const undo = yield* deepagentCode.spawn(["session", "archive", sessionID, "--undo"], { env: dbEnv })
+        deepagentCode.expectExit(undo, 0, "session archive --undo")
+        expect(undo.stderr + undo.stdout).toContain(`Session ${sessionID} restored`)
+
+        const listAfterUndo = yield* deepagentCode.spawn(["session", "list", "--format", "json"], { env: dbEnv })
+        const afterUndo = JSON.parse(listAfterUndo.stdout) as Array<{ id: string; archived: number | null }>
+        expect(afterUndo.find((s) => s.id === sessionID)?.archived).toBeNull()
+      }),
+    120_000,
+  )
+
+  cliIt.concurrent(
+    "fails with a clear error when the session does not exist",
+    ({ deepagentCode }) =>
+      Effect.gen(function* () {
+        const rename = yield* deepagentCode.spawn(["session", "rename", "ses_missing000000", "nope"])
+        expect(rename.exitCode).not.toBe(0)
+        expect(rename.stderr + rename.stdout).toContain("Session not found: ses_missing000000")
+
+        const archive = yield* deepagentCode.spawn(["session", "archive", "ses_missing000000"])
+        expect(archive.exitCode).not.toBe(0)
+        expect(archive.stderr + archive.stdout).toContain("Session not found: ses_missing000000")
+      }),
+    60_000,
+  )
+})
diff --git a/packages/deepagent-code/test/context-federation/diagnostics.test.ts b/packages/deepagent-code/test/context-federation/diagnostics.test.ts
index 8efabafd..6d7a1a3e 100644
--- a/packages/deepagent-code/test/context-federation/diagnostics.test.ts
+++ b/packages/deepagent-code/test/context-federation/diagnostics.test.ts
@@ -15,6 +15,8 @@ import {
   ProjectScopeIdentityTable,
   SecurityNamespaceTable,
 } from "@deepagent-code/core/context-federation/sql"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { ContextActivationReceipt } from "../../src/context-federation/activation-receipt"
 import { Database } from "@deepagent-code/core/database/database"
 import { DeepAgentReleasedSnapshot } from "@deepagent-code/core/deepagent/released-snapshot"
 import { ProjectV2 } from "@deepagent-code/core/project"
@@ -42,6 +44,44 @@ const attemptId = "attempt_context_diagnostics"
 const securityNamespaceId = SecurityNamespaceID.make("sec_context_diagnostics")
 const projectScopeKey = ProjectScopeKey.make("prjctx_context_diagnostics")
 const releasedKnowledgeBinding = DeepAgentReleasedSnapshot.binding(undefined)
+// Typed federation fixture values the receipt columns demand: a not_requested decision whose
+// requested/enabled/project fields mirror between eligibility and activation (the semantic
+// guard compares them field-by-field as JSON).
+const fixtureRequested: ContextFederationRollout.Requested = {
+  contextFederationShadow: false,
+  locationIndexesV2Shadow: false,
+  contextProjectionV2: false,
+  contextQueryToolsV2: false,
+  coreV2ExecutionOwner: false,
+}
+const fixtureEligibility: ContextFederationRollout.ProjectDecision = {
+  requested: fixtureRequested,
+  enabled: fixtureRequested,
+  blocked: {},
+  project: { projectScopeKey, stage: "all", bucket: 0, selected: false, killSwitch: false },
+}
+const fixtureReadiness: ContextFederationRollout.DerivedContextDataReadiness = {
+  revision: "diagnostics-readiness",
+  state: "ready",
+  identityBound: true,
+  indexAvailable: true,
+  storageHealthy: true,
+  projectScopeKey,
+  reasons: [],
+  observedAt: 35,
+  expiresAt: 600_035,
+}
+const fixtureActivation: ContextActivationReceipt.Receipt = {
+  schemaVersion: 1,
+  recordedAt: 35,
+  readinessAgeMs: 0,
+  readinessExpiresInMs: 600_000,
+  outcome: "not_requested",
+  enabledCapabilities: [],
+  fallbackReasons: [],
+  decision: fixtureEligibility,
+  selection: { selectionId, projectionHash: "projection" },
+}
 
 describe("ContextFederationDiagnostics", () => {
   test("returns opaque evidence and requires durable terminal evidence before settle", async () => {
@@ -58,6 +98,7 @@ describe("ContextFederationDiagnostics", () => {
       resolve: () => Effect.die("not used"),
       prepareProviderTurn: () => Effect.die("not used"),
       settleActivity: () => Effect.void,
+      settleOrphanedActivities: () => Effect.succeed(0),
       replayIndeterminate: () => Effect.die("not used"),
       releasedKnowledgeForActiveSession: () => Effect.succeed(undefined),
     } satisfies SessionFederatedContext.Interface)
@@ -75,7 +116,7 @@ describe("ContextFederationDiagnostics", () => {
         yield* seed(db)
         const service = yield* ContextFederationDiagnostics.Service
         yield* db
-          .insert(SessionToolRequestReceiptTable)
+          .insert(SessionToolRequestReceiptTable) // fixture-exempt: bare preparing receipt; walked to the crashed state below
           .values({
             receipt_id: "receipt_context_legacy",
             request_ordinal: 1,
@@ -83,6 +124,12 @@ describe("ContextFederationDiagnostics", () => {
             user_message_id: inputId,
             assistant_message_id: null,
             provider_attempt_id: attemptId,
+            context_selection_id: selectionId,
+            released_knowledge_security_namespace_id: securityNamespaceId,
+            released_knowledge_project_scope_key: projectScopeKey,
+            released_knowledge_binding_state: releasedKnowledgeBinding.state,
+            released_knowledge_exact_refs: releasedKnowledgeBinding.exactRefs,
+            released_knowledge_exact_refs_fingerprint: releasedKnowledgeBinding.exactRefsFingerprint,
             provider_id: "provider-test",
             model_id: "model-test",
             protocol: "chat",
@@ -90,12 +137,88 @@ describe("ContextFederationDiagnostics", () => {
             permission_filtered_tool_ids: [],
             final_offered_tool_ids: [],
             call_ids: [],
+            prompt_epoch: 0,
+            prompt_window_id: "window-receipt-context-legacy",
+            effective_history_hash: "history-receipt-context-legacy",
+            request_input_hash: "request",
+            context_eligibility: fixtureEligibility,
+            context_readiness: fixtureReadiness,
+            context_activation: fixtureActivation,
+            context_activation_fingerprint: "ab".repeat(32),
+            provider_state: "preparing",
+            owner_token: "diagnostics-stale-owner",
+            request_state: "prepared",
+            created_at: 35,
+          })
+          .run()
+        // seal selected refs once while still preparing.
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
+            released_knowledge_selected_refs: releasedKnowledgeBinding.exactRefs,
+            released_knowledge_selected_refs_fingerprint: releasedKnowledgeBinding.exactRefsFingerprint,
+          })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt_context_legacy"))
+          .run()
+        // seal the prepared turn (wire hashes must equal the attempt's sealed identity).
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
+            provider_state: "prepared",
+            final_request_hash: "ef".repeat(32),
+            provider_request_hash: "ef".repeat(32),
+            wire_request_hash: "ef".repeat(32),
+            prepared_turn_hash: "cd".repeat(32),
+            system_stable_hash: "aa".repeat(32),
+            system_volatile_hash: "bb".repeat(32),
+            tool_definition_hash: "cc".repeat(32),
+            adapter_prepared_at: 36,
+            final_offered_tool_ids: ["fixture_tool"],
+          })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt_context_legacy"))
+          .run()
+        // dispatch attempt then receipt (the wire guard matches them pairwise).
+        yield* db
+          .update(SessionProviderAttemptTable)
+          .set({ state: "dispatching" })
+          .where(eq(SessionProviderAttemptTable.attempt_id, attemptId))
+          .run()
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({ provider_state: "dispatching", dispatching_at: 37 })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt_context_legacy"))
+          .run()
+        // simulate the crash: release the stale owner's lease, admit a recovery owner, then mark
+        // both rows indeterminate (the recovery guard demands exactly this lease pair).
+        yield* db.run(sql`
+          UPDATE session_provider_owner_lease
+          SET released_at = CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)
+          WHERE owner_token = 'diagnostics-stale-owner'
+        `)
+        yield* db.run(sql`
+          INSERT INTO session_provider_owner_lease (
+            owner_token, registered_at, heartbeat_at, lease_expires_at
+          ) VALUES (
+            'diagnostics-recovery-owner',
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+            CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 60000
+          )
+        `)
+        yield* db
+          .update(SessionProviderAttemptTable)
+          .set({ state: "indeterminate_after_crash", error_code: "process_recovery" })
+          .where(eq(SessionProviderAttemptTable.attempt_id, attemptId))
+          .run()
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
             provider_state: "indeterminate_after_crash",
+            terminal_at: 38,
             request_state: "dispatched",
             request_error_code: "provider_started_outcome_unknown_after_process_restart",
-            owner_token: "dead-process",
-            created_at: 35,
           })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt_context_legacy"))
           .run()
         const bypass = yield* db
           .insert(SessionProviderAttemptResolutionTable)
@@ -190,6 +313,53 @@ describe("ContextFederationDiagnostics", () => {
       }).pipe(Effect.provide(diagnostics), Effect.provide(database), Effect.scoped),
     )
   })
+
+  test("cohort aggregates durable selections by readiness bucket over a window (FEAT-005)", async () => {
+    ContextFederationObservability.reset()
+    const database = Database.layerFromPath(":memory:")
+    const attemptLayer = SessionProviderAttempt.layer.pipe(Layer.provide(database))
+    const ownerLayer = SessionProviderOwner.layer.pipe(Layer.provide(database))
+    const sessionLayer = Layer.succeed(Session.Service, {
+      messages: () => Effect.sync(() => []),
+    } as unknown as Session.Interface)
+    const federationLayer = Layer.succeed(SessionFederatedContext.Service, {
+      recover: () => Effect.succeed(0),
+      resolve: () => Effect.die("not used"),
+      prepareProviderTurn: () => Effect.die("not used"),
+      settleActivity: () => Effect.void,
+      settleOrphanedActivities: () => Effect.succeed(0),
+      replayIndeterminate: () => Effect.die("not used"),
+      releasedKnowledgeForActiveSession: () => Effect.succeed(undefined),
+    } satisfies SessionFederatedContext.Interface)
+    const diagnostics = ContextFederationDiagnostics.layer.pipe(
+      Layer.provide(database),
+      Layer.provide(attemptLayer),
+      Layer.provide(ownerLayer),
+      Layer.provide(sessionLayer),
+      Layer.provide(federationLayer),
+    )
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seed(db)
+        const service = yield* ContextFederationDiagnostics.Service
+        // Window covering the seeded selection (created_at = 20). code/knowledge/memory are ready;
+        // documents is degraded → the selection folds to the WORST bucket (degraded), so cold-start
+        // noise is kept out of the "ready" cohort.
+        const cohort = yield* service.cohort({ sinceMs: 0, untilMs: 100 })
+        expect(cohort.selections).toBe(1)
+        expect(cohort.sessions).toBe(1)
+        expect(cohort.tokens).toBe(8)
+        expect(cohort.readiness).toEqual({ ready: 0, building: 0, degraded: 1, blocked: 0 })
+        expect(cohort.graphs.code).toMatchObject({ statuses: 1, ready: 1, notReady: 0 })
+        expect(cohort.graphs.documents).toMatchObject({ statuses: 1, ready: 0, notReady: 1 })
+        // A window that excludes the selection yields an empty cohort.
+        const empty = yield* service.cohort({ sinceMs: 1000, untilMs: 2000 })
+        expect(empty.selections).toBe(0)
+        expect(empty.readiness).toEqual({ ready: 0, building: 0, degraded: 0, blocked: 0 })
+      }).pipe(Effect.provide(diagnostics), Effect.provide(database), Effect.scoped),
+    )
+  })
 })
 
 function seed(db: Database.Interface["db"]) {
@@ -280,7 +450,7 @@ function seed(db: Database.Interface["db"]) {
       })
       .run()
     yield* db
-      .insert(SessionActivityTable)
+      .insert(SessionActivityTable) // fixture-exempt: seeds crash-recovery activity for diagnostics fixture
       .values({
         activity_id: activityId,
         session_id: sessionId,
@@ -354,7 +524,7 @@ function seed(db: Database.Interface["db"]) {
       )
     `)
     yield* db
-      .insert(SessionProviderAttemptTable)
+      .insert(SessionProviderAttemptTable) // fixture-exempt: admitted prepared attempt; the test body walks it to the crashed state
       .values({
         attempt_id: attemptId,
         session_id: sessionId,
@@ -365,16 +535,20 @@ function seed(db: Database.Interface["db"]) {
         request_hash: "request",
         provider_id: "provider-test",
         owner_token: "diagnostics-stale-owner",
-        state: "indeterminate_after_crash",
+        state: "prepared",
         created_at: 30,
-        error_code: "process_recovery",
       })
       .run()
-    yield* db.run(sql`
-      UPDATE session_provider_owner_lease
-      SET released_at = CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)
-      WHERE owner_token = 'diagnostics-stale-owner'
-    `)
+    // Seal the attempt's wire identity once (prepared→prepared), the sole admission path; the
+    // receipt sealed later must carry these exact hashes.
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({
+        prepared_turn_hash: "cd".repeat(32),
+        wire_request_hash: "ef".repeat(32),
+      })
+      .where(eq(SessionProviderAttemptTable.attempt_id, attemptId))
+      .run()
   })
 }
 
diff --git a/packages/deepagent-code/test/context-federation/provider-owner-runtime.test.ts b/packages/deepagent-code/test/context-federation/provider-owner-runtime.test.ts
index 936a0da2..f6475a0a 100644
--- a/packages/deepagent-code/test/context-federation/provider-owner-runtime.test.ts
+++ b/packages/deepagent-code/test/context-federation/provider-owner-runtime.test.ts
@@ -1,20 +1,38 @@
 import { describe, expect, test } from "bun:test"
 import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
-import { Effect, Ref } from "effect"
+import { Database } from "@deepagent-code/core/database/database"
+import { sql } from "drizzle-orm"
+import { Cause, Effect, Exit, Layer, Option, Ref } from "effect"
 import { ContextFederationProviderOwnerRuntime } from "../../src/context-federation/provider-owner-runtime"
 
+const makeLease = (ownerToken: string, leaseMs: number): SessionProviderOwner.Lease => ({
+  ownerToken,
+  registeredAt: 1,
+  heartbeatAt: 2,
+  leaseExpiresAt: 2 + leaseMs,
+})
+
 describe("ContextFederationProviderOwnerRuntime", () => {
-  test("permanently fences mutations after the durable owner lease expires", async () => {
+  test("rotates to a successor owner generation when the durable lease fences the old token", async () => {
     let recovered = 0
+    const registered: string[] = []
     const healthy = await Effect.runPromise(Ref.make(true))
+    const owner = await Effect.runPromise(
+      Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({ ownerToken: "base:gen-0:old", generation: 0 }),
+    )
 
     const continued = await Effect.runPromise(
       ContextFederationProviderOwnerRuntime.tick({
         owners: {
           heartbeat: () =>
             Effect.fail(new SessionProviderOwner.ConflictError({ reason: "provider_owner_lease_not_live" })),
+          register: ({ ownerToken, leaseMs }) => {
+            registered.push(ownerToken)
+            return Effect.succeed(makeLease(ownerToken, leaseMs))
+          },
         },
-        ownerToken: "expired-owner",
+        owner,
+        ownerBase: "base",
         leaseMs: 30_000,
         healthy,
         label: "test provider",
@@ -22,19 +40,58 @@ describe("ContextFederationProviderOwnerRuntime", () => {
       }),
     )
 
-    expect(continued).toBe(false)
-    expect(await Effect.runPromise(Ref.get(healthy))).toBe(false)
+    const rotated = await Effect.runPromise(Ref.get(owner))
+    expect(continued).toBe(true)
+    expect(await Effect.runPromise(Ref.get(healthy))).toBe(true)
     expect(recovered).toBe(0)
+    expect(rotated.generation).toBe(1)
+    expect(rotated.ownerToken.startsWith("base:gen-1:")).toBe(true)
+    expect(rotated.ownerToken).not.toBe("base:gen-0:old")
+    expect(registered).toEqual([rotated.ownerToken])
+  })
+
+  test("keeps the fenced generation and retries next tick when successor registration fails", async () => {
+    const healthy = await Effect.runPromise(Ref.make(true))
+    const owner = await Effect.runPromise(
+      Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({ ownerToken: "base:gen-0:old", generation: 0 }),
+    )
+
+    const continued = await Effect.runPromise(
+      ContextFederationProviderOwnerRuntime.tick({
+        owners: {
+          heartbeat: () =>
+            Effect.fail(new SessionProviderOwner.ConflictError({ reason: "provider_owner_lease_not_live" })),
+          register: () =>
+            Effect.fail(new SessionProviderOwner.ConflictError({ reason: "owner_token_already_registered" })),
+        },
+        owner,
+        ownerBase: "base",
+        leaseMs: 30_000,
+        healthy,
+        label: "test provider",
+      }),
+    )
+
+    expect(continued).toBe(true)
+    expect(await Effect.runPromise(Ref.get(healthy))).toBe(true)
+    expect(await Effect.runPromise(Ref.get(owner))).toEqual({ ownerToken: "base:gen-0:old", generation: 0 })
   })
 
   test("keeps the runtime healthy so a transient heartbeat failure can retry", async () => {
     let recovered = 0
     const healthy = await Effect.runPromise(Ref.make(true))
+    const owner = await Effect.runPromise(
+      Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({ ownerToken: "retry-owner", generation: 0 }),
+    )
 
     const continued = await Effect.runPromise(
       ContextFederationProviderOwnerRuntime.tick({
-        owners: { heartbeat: () => Effect.die(new Error("database temporarily unavailable")) },
-        ownerToken: "retry-owner",
+        owners: {
+          heartbeat: () => Effect.die(new Error("database temporarily unavailable")),
+          register: () => Effect.die(new Error("register must not run on a transient heartbeat failure")),
+        },
+        owner,
+        ownerBase: "retry-owner",
         leaseMs: 30_000,
         healthy,
         label: "test provider",
@@ -50,19 +107,18 @@ describe("ContextFederationProviderOwnerRuntime", () => {
   test("runs recovery only after a successful heartbeat", async () => {
     let recovered = 0
     const healthy = await Effect.runPromise(Ref.make(true))
+    const owner = await Effect.runPromise(
+      Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({ ownerToken: "healthy-owner", generation: 0 }),
+    )
 
     const continued = await Effect.runPromise(
       ContextFederationProviderOwnerRuntime.tick({
         owners: {
-          heartbeat: ({ ownerToken, leaseMs }) =>
-            Effect.succeed({
-              ownerToken,
-              registeredAt: 1,
-              heartbeatAt: 2,
-              leaseExpiresAt: 2 + leaseMs,
-            }),
+          heartbeat: ({ ownerToken, leaseMs }) => Effect.succeed(makeLease(ownerToken, leaseMs)),
+          register: () => Effect.die(new Error("register must not run on a live heartbeat")),
         },
-        ownerToken: "healthy-owner",
+        owner,
+        ownerBase: "healthy-owner",
         leaseMs: 30_000,
         healthy,
         label: "test provider",
@@ -73,5 +129,128 @@ describe("ContextFederationProviderOwnerRuntime", () => {
     expect(continued).toBe(true)
     expect(await Effect.runPromise(Ref.get(healthy))).toBe(true)
     expect(recovered).toBe(1)
+    expect(await Effect.runPromise(Ref.get(owner))).toEqual({ ownerToken: "healthy-owner", generation: 0 })
+  })
+})
+
+describe("RISK-004 drill: provider owner lease drift against the real store", () => {
+  // The lease table's authority triggers forbid backdating lease_expires_at from outside the
+  // heartbeat path, so drift is simulated with a minimal lease and a bounded poll — no fixed sleep.
+  const driftLeaseMs = 10
+  const waitUntilDrifted = (heartbeat: () => Effect.Effect<unknown, SessionProviderOwner.ConflictError>) =>
+    Effect.gen(function* () {
+      for (let attempt = 0; attempt < 500; attempt++) {
+        const exit = yield* heartbeat().pipe(Effect.exit)
+        if (Exit.isFailure(exit)) return
+        yield* Effect.sleep("10 millis")
+      }
+      return yield* Effect.die(new Error("owner lease never drifted past expiry"))
+    })
+
+  test("d: a heartbeat gap beyond LeaseMs fences the owner and a successor registers", async () => {
+    const database = Database.layerFromPath(":memory:")
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const owners = yield* SessionProviderOwner.Service
+        yield* owners.register({ ownerToken: "owner-a", leaseMs: driftLeaseMs })
+        // Stop heartbeating: the lease drifts past expiry on the database clock.
+        yield* waitUntilDrifted(() => owners.heartbeat({ ownerToken: "owner-a", leaseMs: driftLeaseMs }))
+
+        const missed = yield* owners.heartbeat({ ownerToken: "owner-a", leaseMs: driftLeaseMs }).pipe(Effect.exit)
+        expect(Exit.isFailure(missed)).toBe(true)
+        if (!Exit.isFailure(missed)) return
+        const missedError = Option.getOrUndefined(Cause.findErrorOption(missed.cause))
+        expect(missedError).toBeInstanceOf(SessionProviderOwner.ConflictError)
+        if (missedError instanceof SessionProviderOwner.ConflictError) {
+          expect(missedError.reason).toBe("provider_owner_lease_not_live")
+        }
+
+        const successor = yield* owners.register({ ownerToken: "owner-b", leaseMs: SessionProviderOwner.LeaseMs })
+        expect(successor.ownerToken).toBe("owner-b")
+        const beat = yield* owners.heartbeat({ ownerToken: "owner-b", leaseMs: SessionProviderOwner.LeaseMs })
+        expect(beat.leaseExpiresAt).toBeGreaterThanOrEqual(successor.leaseExpiresAt)
+
+        const stillFenced = yield* owners
+          .heartbeat({ ownerToken: "owner-a", leaseMs: SessionProviderOwner.LeaseMs })
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(stillFenced)).toBe(true)
+      }).pipe(
+        Effect.provide(SessionProviderOwner.layer.pipe(Layer.provide(database))),
+        Effect.provide(database),
+      ),
+    )
+  })
+
+  test("d: runtime tick rotates to a live successor generation once the real store fences the lease", async () => {
+    const database = Database.layerFromPath(":memory:")
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const owners = yield* SessionProviderOwner.Service
+        const startupToken = "drift-base:gen-0:seed"
+        yield* owners.register({ ownerToken: startupToken, leaseMs: driftLeaseMs })
+        yield* waitUntilDrifted(() => owners.heartbeat({ ownerToken: startupToken, leaseMs: driftLeaseMs }))
+
+        const healthy = yield* Ref.make(true)
+        const owner = yield* Ref.make<ContextFederationProviderOwnerRuntime.OwnerGeneration>({
+          ownerToken: startupToken,
+          generation: 0,
+        })
+        const continued = yield* ContextFederationProviderOwnerRuntime.tick({
+          owners,
+          owner,
+          ownerBase: "drift-base",
+          leaseMs: SessionProviderOwner.LeaseMs,
+          healthy,
+          label: "drill provider",
+        })
+        expect(continued).toBe(true)
+        expect(yield* Ref.get(healthy)).toBe(true)
+        const rotated = yield* Ref.get(owner)
+        expect(rotated.generation).toBe(1)
+        expect(rotated.ownerToken.startsWith("drift-base:gen-1:")).toBe(true)
+
+        // The successor token passes the durable lease guards (register + heartbeat clock checks),
+        // so attempt/receipt writers holding the current generation pass the lease fence.
+        const beat = yield* owners.heartbeat({ ownerToken: rotated.ownerToken, leaseMs: SessionProviderOwner.LeaseMs })
+        expect(beat.leaseExpiresAt).toBeGreaterThan(beat.heartbeatAt)
+
+        // The fenced startup token stays dead — rotation never revives or extends it.
+        const stillFenced = yield* owners
+          .heartbeat({ ownerToken: startupToken, leaseMs: SessionProviderOwner.LeaseMs })
+          .pipe(Effect.exit)
+        expect(Exit.isFailure(stillFenced)).toBe(true)
+
+        // The following tick heartbeats the successor token and runs recovery without rotating again.
+        let recovered = 0
+        const nextContinued = yield* ContextFederationProviderOwnerRuntime.tick({
+          owners,
+          owner,
+          ownerBase: "drift-base",
+          leaseMs: SessionProviderOwner.LeaseMs,
+          healthy,
+          label: "drill provider",
+          recover: Effect.sync(() => recovered++),
+        })
+        expect(nextContinued).toBe(true)
+        expect(recovered).toBe(1)
+        expect(yield* Ref.get(owner)).toEqual(rotated)
+        expect(yield* Ref.get(healthy)).toBe(true)
+
+        // BUG-407-009 fence: successor registration atomically installs the protocol-3 capability
+        // row, so a pre-successor binary refuses to open this database (its startup recovery would
+        // re-quarantine the successor chain) instead of failing closed on the next open.
+        const fence = yield* (yield* Database.Service).db.get<{
+          minimum_reader_protocol: number
+          minimum_writer_protocol: number
+        }>(sql`
+          SELECT minimum_reader_protocol, minimum_writer_protocol FROM database_capability
+          WHERE capability = 'provider_owner_successor_v1'
+        `)
+        expect(fence).toEqual({ minimum_reader_protocol: 3, minimum_writer_protocol: 3 })
+      }).pipe(
+        Effect.provide(SessionProviderOwner.layer.pipe(Layer.provide(database))),
+        Effect.provide(database),
+      ),
+    )
   })
 })
diff --git a/packages/deepagent-code/test/control-plane/workspace.test.ts b/packages/deepagent-code/test/control-plane/workspace.test.ts
index 2509d1b7..a7758a4e 100644
--- a/packages/deepagent-code/test/control-plane/workspace.test.ts
+++ b/packages/deepagent-code/test/control-plane/workspace.test.ts
@@ -19,6 +19,11 @@ import { SessionID } from "@/session/schema"
 import { SessionTable } from "@deepagent-code/core/session/sql"
 import { EventSequenceTable, EventSyncSequenceTable, EventTable, WorkspaceSyncCursorTable } from "@deepagent-code/core/event/sql"
 import { SessionToolRequestReceiptTable } from "@/session/tool-request-receipt.sql"
+import { SessionProviderOwnerLeaseTable } from "@deepagent-code/core/context-federation/session-sql"
+import { ProjectScopeIdentityTable, SecurityNamespaceTable } from "@deepagent-code/core/context-federation/sql"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { ProjectScopeKey, SecurityNamespaceID } from "@deepagent-code/core/context-federation/reference"
+import { ContextActivationReceipt } from "@/context-federation/activation-receipt"
 import { resetDatabase } from "../fixture/db"
 import { disposeAllInstances, provideTmpdirInstance, requireInstance, TestInstance } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
@@ -160,7 +165,7 @@ function expectExitContains(exit: Exit.Exit<unknown, unknown>, ...messages: stri
   for (const message of messages) expect(String(exit.cause)).toContain(message)
 }
 
-function eventuallyEffect(effect: Effect.Effect<void>, timeout = 1500) {
+function eventuallyEffect<R>(effect: Effect.Effect<void, unknown, R>, timeout = 10_000) {
   return Effect.gen(function* () {
     const started = Date.now()
     let last: unknown
@@ -947,26 +952,158 @@ describe("workspace CRUD", () => {
         const session = yield* sessionSvc.create({})
         yield* attachSessionToWorkspace(session.id, previous.id)
         const { db } = yield* Database.Service
+        // Fixture-exempt: seed an indeterminate_after_crash receipt for the warp-recovery fixture.
+        // The durable turn guards admit receipts only through the preparing→prepared→dispatching
+        // lifecycle with live owner lease + released-knowledge scope authority, so the fixture
+        // synthesizes that minimal chain and walks it to the crashed state.
+        const warpReceiptID = "receipt-warp-recovery-required"
+        const warpOwner = "dead-process-warp-recovery"
+        const warpNamespace = "sec-warp-recovery"
+        const warpScope = "prjctx-warp-recovery"
+        const warpHash = "ab".repeat(32)
+        const warpNow = Date.now()
+        const dbNowMs = sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`
+        const warpRequested: ContextFederationRollout.Requested = {
+          contextFederationShadow: false,
+          locationIndexesV2Shadow: false,
+          contextProjectionV2: false,
+          contextQueryToolsV2: false,
+          coreV2ExecutionOwner: false,
+        }
+        const warpEligibility: ContextFederationRollout.ProjectDecision = {
+          requested: warpRequested,
+          enabled: warpRequested,
+          blocked: {},
+          project: { projectScopeKey: warpScope, stage: "all", bucket: 0, selected: false, killSwitch: false },
+        }
+        const warpReadiness: ContextFederationRollout.DerivedContextDataReadiness = {
+          revision: "warp-recovery-readiness",
+          state: "ready",
+          identityBound: true,
+          indexAvailable: true,
+          storageHealthy: true,
+          projectScopeKey: warpScope,
+          reasons: [],
+          observedAt: warpNow,
+          expiresAt: warpNow + 600_000,
+        }
+        const warpActivation: ContextActivationReceipt.Receipt = {
+          schemaVersion: 1,
+          recordedAt: warpNow,
+          readinessAgeMs: 0,
+          readinessExpiresInMs: 600_000,
+          outcome: "not_requested",
+          enabledCapabilities: [],
+          fallbackReasons: [],
+          decision: warpEligibility,
+        }
+        yield* db
+          .insert(SecurityNamespaceTable)
+          .values({ id: warpNamespace, kind: "implicit_local", binding_hash: "warp-recovery-binding", created_at: warpNow, retired_at: null })
+          .run()
+          .pipe(Effect.orDie)
         yield* db
-          .insert(SessionToolRequestReceiptTable)
+          .insert(ProjectScopeIdentityTable)
           .values({
-            receipt_id: "receipt-warp-recovery-required",
+            security_namespace_id: warpNamespace,
+            project_scope_key: warpScope,
+            project_kind: "registered_root",
+            project_identity_hash: "warp-recovery-project",
+            observed_project_id: "project-warp-recovery",
+            created_at: warpNow,
+            retired_at: null,
+          })
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .insert(SessionProviderOwnerLeaseTable)
+          .values({
+            owner_token: warpOwner,
+            registered_at: dbNowMs,
+            heartbeat_at: dbNowMs,
+            lease_expires_at: sql`${dbNowMs} + 3600000`,
+            released_at: null,
+          } as never)
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds an indeterminate receipt so warp must fail closed on unresolved provider recovery
+          .values({
+            receipt_id: warpReceiptID,
             request_ordinal: 1,
             session_id: session.id,
             user_message_id: "message-user",
             assistant_message_id: "message-assistant",
             provider_attempt_id: null,
+            context_selection_id: null,
+            released_knowledge_security_namespace_id: SecurityNamespaceID.make(warpNamespace),
+            released_knowledge_project_scope_key: ProjectScopeKey.make(warpScope),
+            released_knowledge_binding_state: "unavailable",
+            released_knowledge_exact_refs: [],
+            released_knowledge_exact_refs_fingerprint: "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
             provider_id: "test",
             model_id: "test",
+            protocol: "chat",
             registry_tool_ids: [],
             permission_filtered_tool_ids: [],
             final_offered_tool_ids: [],
             call_ids: [],
+            prompt_epoch: 1,
+            prompt_window_id: "window-warp-recovery",
+            effective_history_hash: warpHash,
+            request_input_hash: "input-warp-recovery",
+            context_eligibility: warpEligibility,
+            context_readiness: warpReadiness,
+            context_activation: warpActivation,
+            context_activation_fingerprint: "f".repeat(64),
+            provider_state: "preparing",
+            owner_token: warpOwner,
+            request_state: "prepared",
+            created_at: warpNow,
+          })
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
+            released_knowledge_selected_refs: [],
+            released_knowledge_selected_refs_fingerprint: "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
+          })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, warpReceiptID))
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
+            provider_state: "prepared",
+            final_request_hash: warpHash,
+            provider_request_hash: warpHash,
+            wire_request_hash: warpHash,
+            prepared_turn_hash: warpHash,
+            system_stable_hash: warpHash,
+            system_volatile_hash: warpHash,
+            tool_definition_hash: warpHash,
+            adapter_prepared_at: warpNow,
+            final_offered_tool_ids: ["fixture_tool"],
+          })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, warpReceiptID))
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({ provider_state: "dispatching", dispatching_at: warpNow })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, warpReceiptID))
+          .run()
+          .pipe(Effect.orDie)
+        yield* db
+          .update(SessionToolRequestReceiptTable)
+          .set({
             provider_state: "indeterminate_after_crash",
-            terminal_at: Date.now(),
+            terminal_at: warpNow,
             request_state: "dispatched",
-            created_at: Date.now(),
+            request_error_code: "provider_started_outcome_unknown_after_process_restart",
           })
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, warpReceiptID))
           .run()
           .pipe(Effect.orDie)
         const owner = yield* sessionSequenceOwner(session.id)
@@ -1738,10 +1875,18 @@ describe("workspace sync state", () => {
                   expect((yield* sessionSvc.get(session.id).pipe(Effect.orDie)).title).toBe("from history")
                 }),
               )
-              expect(historyBodies).toEqual([
-                { version: 1 },
-                { version: 1, cursor: "cursor-history-1" },
-              ])
+              // Under load the initial sync can be issued more than once before the first cursor is
+              // durably stored; assert the advance contract semantically (a cursorless request
+              // followed by one resuming cursor-history-1) instead of an exact two-request sequence.
+              yield* eventuallyEffect(
+                Effect.sync(() => {
+                  const bodies = historyBodies as Array<{ version: 1; cursor?: string }>
+                  const initial = bodies.findIndex((body) => body.cursor === undefined)
+                  const resumed = bodies.findIndex((body) => body.cursor === "cursor-history-1")
+                  expect(initial).toBeGreaterThanOrEqual(0)
+                  expect(resumed).toBeGreaterThan(initial)
+                }),
+              )
               expect(
                 yield* Database.Service.use(({ db }) =>
                   db
@@ -1932,9 +2077,13 @@ describe("workspace sync state", () => {
             }
 
             yield* workspace.startWorkspaceSyncing(instance.project.id)
-            yield* eventuallyEffect(Effect.sync(() => expect(chunkRequests).toBeGreaterThanOrEqual(1)), 5_000)
+            // Under load the chunk download retry backoff stretches; give the failed import a wide
+            // window, then let any in-flight retry wave settle before asserting the negative
+            // guarantees (no cursor advance, no event applied).
+            yield* eventuallyEffect(Effect.sync(() => expect(chunkRequests).toBeGreaterThanOrEqual(1)), 15_000)
             expect(historyRequests).toBeGreaterThanOrEqual(1)
             expect(metadataRequests).toBeGreaterThanOrEqual(1)
+            yield* Effect.sleep("500 millis")
             expect(
               yield* db.select().from(WorkspaceSyncCursorTable).where(eq(WorkspaceSyncCursorTable.workspace_id, info.id)).get(),
             ).toBeUndefined()
@@ -1982,21 +2131,29 @@ describe("workspace sync state", () => {
             registerAdapter(instance.project.id, type, remoteAdapter(`${url}/history-reconnect`).adapter)
 
             yield* workspace.startWorkspaceSyncing(instance.project.id)
-            yield* eventuallyEffect(Effect.sync(() => expect(historyBodies.length).toBeGreaterThanOrEqual(2)), 3_000)
-
-            expect(historyBodies.slice(0, 2)).toEqual([
-              { version: 1 },
-              { version: 1, cursor: "cursor-reconnect-1" },
-            ])
-            expect(
-              yield* Database.Service.use(({ db }) =>
+            // Under load the initial sync can be issued more than once before the first cursor is
+            // durably stored; assert the reconnect contract semantically (a cursorless request
+            // followed by one resuming cursor-reconnect-1) instead of an exact two-request prefix.
+            yield* eventuallyEffect(
+              Effect.sync(() => {
+                const initial = historyBodies.findIndex((body) => body.cursor === undefined)
+                const resumed = historyBodies.findIndex((body) => body.cursor === "cursor-reconnect-1")
+                expect(initial).toBeGreaterThanOrEqual(0)
+                expect(resumed).toBeGreaterThan(initial)
+              }),
+              10_000,
+            )
+            yield* eventuallyEffect(
+              Database.Service.use(({ db }) =>
                 db
                   .select({ cursor: WorkspaceSyncCursorTable.cursor })
                   .from(WorkspaceSyncCursorTable)
                   .where(eq(WorkspaceSyncCursorTable.workspace_id, info.id))
-                  .get(),
+                  .get()
+                  .pipe(Effect.map((row) => expect(row).toEqual({ cursor: "cursor-reconnect-2" }))),
               ),
-            ).toEqual({ cursor: "cursor-reconnect-2" })
+              10_000,
+            )
             yield* workspace.remove(info.id)
           }),
         { git: true },
@@ -2065,20 +2222,29 @@ describe("workspace sync state", () => {
             )
 
             yield* workspace.startWorkspaceSyncing(instance.project.id)
-            yield* eventuallyEffect(Effect.sync(() => expect(historyBodies.length).toBe(2)) )
-            expect(historyBodies).toEqual([
-              { version: 1, cursor: "cursor-stale-old-generation" },
-              { version: 1 },
-            ])
-            expect(
-              yield* Database.Service.use(({ db }) =>
+            // The stale cursor must be reset after the remote rejects it: a cursorless retry
+            // follows the rejected old-cursor attempt. Under load extra initial retries can
+            // interleave, so assert the reset contract semantically rather than an exact sequence.
+            yield* eventuallyEffect(
+              Effect.sync(() => {
+                const staleIdx = historyBodies.findIndex((body) => body.cursor === "cursor-stale-old-generation")
+                const resetIdx = historyBodies.findIndex((body) => body.cursor === undefined)
+                expect(staleIdx).toBeGreaterThanOrEqual(0)
+                expect(resetIdx).toBeGreaterThan(staleIdx)
+              }),
+              10_000,
+            )
+            yield* eventuallyEffect(
+              Database.Service.use(({ db }) =>
                 db
                   .select({ cursor: WorkspaceSyncCursorTable.cursor })
                   .from(WorkspaceSyncCursorTable)
                   .where(eq(WorkspaceSyncCursorTable.workspace_id, stale.id))
-                  .get(),
+                  .get()
+                  .pipe(Effect.map((row) => expect(row).toEqual({ cursor: "cursor-stale-reset" }))),
               ),
-            ).toEqual({ cursor: "cursor-stale-reset" })
+              10_000,
+            )
             yield* workspace.remove(stale.id)
 
             historyBodies.length = 0
@@ -2101,8 +2267,12 @@ describe("workspace sync state", () => {
               Effect.gen(function* () {
                 expect((yield* workspace.status()).find((item) => item.workspaceID === bad.id)?.status).toBe("error")
               }),
+              10_000,
             )
-            expect(historyBodies[0]).toEqual({ version: 1, cursor: "cursor-preserved-on-400" })
+            // An unrelated conflict must NOT trigger a cursor reset: the attempt carries the
+            // preserved cursor and no cursorless retry ever fires.
+            expect(historyBodies.some((body) => body.cursor === "cursor-preserved-on-400")).toBe(true)
+            expect(historyBodies.some((body) => body.cursor === undefined)).toBe(false)
             expect(
               yield* Database.Service.use(({ db }) =>
                 db
diff --git a/packages/deepagent-code/test/deepagent/learning-lifecycle-e2e.test.ts b/packages/deepagent-code/test/deepagent/learning-lifecycle-e2e.test.ts
new file mode 100644
index 00000000..017850cd
--- /dev/null
+++ b/packages/deepagent-code/test/deepagent/learning-lifecycle-e2e.test.ts
@@ -0,0 +1,468 @@
+/**
+ * FEAT-004 — learning closed-loop E2E evidence-chain verification (no real LLM).
+ *
+ * Covers the cross-run chain that the three lifecycle callers (idle/pause/project_switch)
+ * feed into:
+ *
+ *   Run A finalization artifacts (LEARNING_ADMISSION_RECEIPT.json + DEEPAGENT_RUN_STATE.json)
+ *     → runtime observer (same wiring as learning-runtime.ts) → observe(trigger=idle)
+ *     → admitted trigger receipt + lifecycle artifact persisted inside the runs directory
+ *     → durable learning job enqueued and drained to completion.
+ *
+ * Then verifies the released-knowledge binding half of the loop:
+ *   Run A's released snapshot binding fingerprint stays stable for Run B resolving the SAME
+ *   workspace (no new publication), and becomes `unavailable` when Run B resolves a different
+ *   workspace / security namespace scope.
+ *
+ * Fixture policy (QUAL-003): no terminal authority row is ever INSERTed directly — trigger
+ * receipts advance through `observe`, learning jobs through `admit`/`drain`, and released
+ * snapshots through `DeepAgentReleasedSnapshot.publish`.
+ */
+import { afterEach, beforeEach, describe, expect, test } from "bun:test"
+import { existsSync, mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import path from "node:path"
+import { count } from "drizzle-orm"
+import { Effect, Layer } from "effect"
+import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
+import { Database } from "@deepagent-code/core/database/database"
+import { DeepAgentDurableLearning, type Admission } from "@deepagent-code/core/deepagent/durable-learning"
+import type { DocumentStore } from "@deepagent-code/core/deepagent/document-store"
+import { DeepAgentLearningLifecycleTrigger } from "@deepagent-code/core/deepagent/learning-lifecycle-trigger"
+import { LearningLifecycleTriggerTable } from "@deepagent-code/core/deepagent/learning-lifecycle-trigger.sql"
+import { LearningJobTable } from "@deepagent-code/core/deepagent/learning-job.sql"
+import {
+  DeepAgentReleasedSnapshot,
+  type DocumentRef,
+  type PublishInput,
+  type Scope,
+} from "@deepagent-code/core/deepagent/released-snapshot"
+import { createInitialRoundState } from "@deepagent-code/core/deepagent/round-state"
+import { FSUtil } from "@deepagent-code/core/fs-util"
+import { Project } from "@deepagent-code/core/project"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { AbsolutePath } from "@deepagent-code/core/schema"
+import { SessionSchema } from "@deepagent-code/core/session/schema"
+import { SessionTable } from "@deepagent-code/core/session/sql"
+import { CanonicalJson } from "@deepagent-code/core/util/canonical-json"
+import { Hash } from "@deepagent-code/core/util/hash"
+
+const SESSION_ID = "ses_lifecycle_e2e"
+const RUN_A_ID = "run-lifecycle-e2e-a"
+const DATABASE_PROJECT_ID = "project-db-lifecycle-e2e"
+const OBSERVED_PROJECT_ID = "project-observed-lifecycle-e2e"
+
+let root: string
+
+beforeEach(() => {
+  root = mkdtempSync(path.join(tmpdir(), "deepagent-learning-lifecycle-e2e-"))
+})
+
+afterEach(() => {
+  DeepAgentLearningLifecycleTrigger.setRuntimeObserver(undefined)
+  rmSync(root, { recursive: true, force: true })
+})
+
+describe("learning lifecycle closed loop (E2E, no LLM)", () => {
+  test("Run A finalization → idle observe → admitted receipt with matching artifact hash persisted in runs dir", async () => {
+    const workspace = path.join(root, "workspace")
+    const runsDir = path.join(root, "runs")
+    mkdirSync(workspace, { recursive: true })
+    writeRunAFinalization({ root, workspace })
+
+    await run(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seedProjectAndSession(db, workspace)
+
+        // Mirror learning-runtime.ts:54-62 — the server runtime registers the observer that the
+        // idle caller (SessionRunState Runner.onIdle) reaches via `notify`.
+        DeepAgentLearningLifecycleTrigger.setRuntimeObserver({
+          observe: (input) =>
+            Effect.runPromise(
+              DeepAgentLearningLifecycleTrigger.observe(db, input, { authorityRoot: root, runsDir }),
+            ),
+        })
+
+        const outcome = yield* Effect.promise(() =>
+          DeepAgentLearningLifecycleTrigger.notify({
+            trigger: "idle",
+            boundaryKey: `session-idle:${SESSION_ID}`,
+            sessionID: SESSION_ID,
+            match: "session",
+          }),
+        )
+        expect(outcome).toMatchObject({ state: "admitted", runId: RUN_A_ID })
+
+        const receipt = yield* db.select().from(LearningLifecycleTriggerTable).get()
+        expect(receipt).toMatchObject({
+          trigger: "idle",
+          boundary_key: `session-idle:${SESSION_ID}`,
+          session_id: SESSION_ID,
+          run_id: RUN_A_ID,
+          state: "admitted",
+        })
+
+        // Artifact hash integrity: row hash === hash of persisted artifact === hash of row JSON.
+        const artifactPath = path.join(runsDir, RUN_A_ID, "LEARNING_LIFECYCLE_TRIGGER_IDLE.json")
+        expect(existsSync(artifactPath)).toBe(true)
+        const artifactContent = yield* Effect.promise(() => Bun.file(artifactPath).text())
+        expect(receipt!.artifact_hash).toBe(Hash.sha256(artifactContent))
+        expect(receipt!.artifact_hash).toBe(Hash.sha256(receipt!.artifact_json))
+        expect(artifactContent).toBe(receipt!.artifact_json)
+        expect(receipt!.artifact_path).toBe(artifactPath)
+
+        // Cross-run evidence chain: the lifecycle artifact re-anchors Run A's source receipt,
+        // terminal artifact, and admission fingerprint.
+        const artifact = JSON.parse(artifactContent)
+        expect(artifact).toMatchObject({
+          schema_version: "deepagent-code.learning_lifecycle_trigger_receipt.v1",
+          trigger: "idle",
+          boundary_key: `session-idle:${SESSION_ID}`,
+          session_id: SESSION_ID,
+          run_id: RUN_A_ID,
+          source_session_relation: "session",
+          source_admission_path: path.join(runsDir, RUN_A_ID, "LEARNING_ADMISSION_RECEIPT.json"),
+          source_terminal_path: path.join(runsDir, RUN_A_ID, "DEEPAGENT_RUN_STATE.json"),
+        })
+        expect(artifact.source_admission_sha256).toMatch(/^[0-9a-f]{64}$/)
+        expect(artifact.source_terminal_sha256).toMatch(/^[0-9a-f]{64}$/)
+        expect(artifact.learning_admission_fingerprint).toMatch(/^[0-9a-f]{64}$/)
+
+        // The admitted trigger produced a durable learning job and the worker can drain it.
+        expect(yield* db.select({ count: count() }).from(LearningJobTable).get()).toEqual({ count: 1 })
+        const completed = yield* DeepAgentDurableLearning.drain(db, {
+          owner: "learning-worker-lifecycle-e2e",
+          authorityRoot: root,
+        })
+        expect(completed.length).toBeGreaterThanOrEqual(1)
+        expect(completed[0]).toMatchObject({ state: "completed" })
+
+        // Exact-boundary dedupe: a second idle observe for the same boundary is idempotent.
+        const retry = yield* DeepAgentLearningLifecycleTrigger.observe(
+          db,
+          {
+            trigger: "idle",
+            boundaryKey: `session-idle:${SESSION_ID}`,
+            sessionID: SESSION_ID,
+            match: "session",
+          },
+          { authorityRoot: root, runsDir },
+        )
+        expect(retry).toMatchObject({ state: "admitted", runId: RUN_A_ID })
+        expect(yield* db.select({ count: count() }).from(LearningLifecycleTriggerTable).get()).toEqual({ count: 1 })
+      }),
+    )
+  }, 30_000)
+
+  test("Run B in the same workspace binds the identical released-knowledge exact-refs fingerprint", async () => {
+    const workspace = path.join(root, "workspace")
+    mkdirSync(workspace, { recursive: true })
+
+    await run(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        const scopeRunA = yield* resolveScope(workspace)
+        const released = yield* publishRunAKnowledge(db, scopeRunA)
+
+        // Run A's request-time binding (what session_tool_request_receipt records as
+        // released_knowledge_exact_refs_fingerprint).
+        const selectionRunA = yield* DeepAgentReleasedSnapshot.current(db, scopeRunA)
+        const bindingRunA = DeepAgentReleasedSnapshot.binding(selectionRunA)
+        expect(bindingRunA).toMatchObject({ state: "bound", snapshotId: released.snapshotId })
+
+        // Run B resolves the same workspace → identical location identity → identical scope.
+        const scopeRunB = yield* resolveScope(workspace)
+        expect(scopeRunB.securityNamespaceId).toBe(scopeRunA.securityNamespaceId)
+        expect(scopeRunB.projectScopeKey).toBe(scopeRunA.projectScopeKey)
+
+        const selectionRunB = yield* DeepAgentReleasedSnapshot.current(db, scopeRunB)
+        const bindingRunB = DeepAgentReleasedSnapshot.binding(selectionRunB)
+        expect(bindingRunB.state).toBe("bound")
+        expect(bindingRunB.exactRefsFingerprint).toBe(bindingRunA.exactRefsFingerprint)
+        expect(bindingRunB.exactRefs).toEqual(bindingRunA.exactRefs)
+        expect(DeepAgentReleasedSnapshot.matchesBinding(selectionRunB, bindingRunA)).toBe(true)
+      }),
+    )
+  })
+
+  test("Run B in a different workspace/security namespace gets an unavailable binding", async () => {
+    const workspace = path.join(root, "workspace")
+    const otherWorkspace = path.join(root, "workspace-other")
+    mkdirSync(workspace, { recursive: true })
+    mkdirSync(otherWorkspace, { recursive: true })
+
+    await run(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        const scopeRunA = yield* resolveScope(workspace)
+        yield* publishRunAKnowledge(db, scopeRunA)
+        const bindingRunA = DeepAgentReleasedSnapshot.binding(yield* DeepAgentReleasedSnapshot.current(db, scopeRunA))
+        expect(bindingRunA.state).toBe("bound")
+
+        // Workspace switch: a different canonical root derives a different location/project scope,
+        // so no released head exists there.
+        const scopeOther = yield* resolveScope(otherWorkspace)
+        expect(`${scopeOther.securityNamespaceId}:${scopeOther.projectScopeKey}`).not.toBe(
+          `${scopeRunA.securityNamespaceId}:${scopeRunA.projectScopeKey}`,
+        )
+        const selectionOther = yield* DeepAgentReleasedSnapshot.current(db, scopeOther)
+        expect(selectionOther).toBeUndefined()
+        const bindingOther = DeepAgentReleasedSnapshot.binding(selectionOther)
+        expect(bindingOther).toMatchObject({ state: "unavailable", exactRefs: [] })
+        expect(bindingOther.exactRefsFingerprint).not.toBe(bindingRunA.exactRefsFingerprint)
+
+        // Security-namespace switch: even with Run A's project scope key, a foreign namespace
+        // resolves nothing.
+        const foreignNamespace: Scope = {
+          securityNamespaceId: "sec_foreign_lifecycle_e2e",
+          projectScopeKey: scopeRunA.projectScopeKey,
+          legacyProjectId: scopeRunA.legacyProjectId,
+        }
+        expect(yield* DeepAgentReleasedSnapshot.current(db, foreignNamespace)).toBeUndefined()
+        expect(DeepAgentReleasedSnapshot.binding(undefined)).toMatchObject({
+          state: "unavailable",
+          exactRefs: [],
+        })
+      }),
+    )
+  })
+
+  test("unregistered observer (pure CLI path) skips silently without a defect", async () => {
+    DeepAgentLearningLifecycleTrigger.setRuntimeObserver(undefined)
+
+    await run(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+
+        // Mirrors SessionRunState/goal-driver/instance-store: notify is always awaited through
+        // Effect.ignore, so an unregistered observer must resolve — never reject or defect.
+        // FEAT-004: the unregistered-observer skip is its OWN reason code — distinct from an
+        // observer that ran but found no matching settled run (`no_exact_settled_run`).
+        const idle = yield* Effect.promise(() =>
+          DeepAgentLearningLifecycleTrigger.notify({
+            trigger: "idle",
+            boundaryKey: `session-idle:${SESSION_ID}`,
+            sessionID: SESSION_ID,
+            match: "session",
+          }),
+        )
+        expect(idle).toEqual({ state: "skipped", reason: "no_observer_registered" })
+
+        const projectSwitch = yield* Effect.promise(() =>
+          DeepAgentLearningLifecycleTrigger.notify({
+            trigger: "project_switch",
+            boundaryKey: `project-switch:${path.join(root, "workspace")}`,
+            directory: path.join(root, "workspace"),
+          }),
+        ).pipe(Effect.ignore)
+        expect(projectSwitch).toBeUndefined()
+
+        expect(yield* db.select({ count: count() }).from(LearningLifecycleTriggerTable).get()).toEqual({ count: 0 })
+        expect(yield* db.select({ count: count() }).from(LearningJobTable).get()).toEqual({ count: 0 })
+      }),
+    )
+  })
+})
+
+function run<A, E>(effect: Effect.Effect<A, E, Database.Service | LocationIdentity.Service>) {
+  const database = Database.layerFromPath(":memory:")
+  return Effect.runPromise(
+    effect.pipe(
+      Effect.provide(
+        Layer.merge(database, LocationIdentity.layer.pipe(Layer.provide(database), Layer.provide(FSUtil.defaultLayer))),
+      ),
+      Effect.scoped,
+    ),
+  )
+}
+
+/**
+ * Writes Run A's session-finalization products through the same legitimate path the gateway
+ * uses: a fingerprint-bound terminal artifact plus a `submitted` local admission receipt.
+ */
+function writeRunAFinalization(input: { readonly root: string; readonly workspace: string }) {
+  const runDir = path.join(input.root, "runs", RUN_A_ID)
+  const terminalPath = path.join(runDir, "DEEPAGENT_RUN_STATE.json")
+  const receiptPath = path.join(runDir, "LEARNING_ADMISSION_RECEIPT.json")
+  mkdirSync(runDir, { recursive: true })
+  const admission: Admission = {
+    baseDir: input.root,
+    workspacePath: input.workspace,
+    rejectedBufferDir: path.join(input.root, "memory"),
+    terminalArtifact: {
+      schema_version: "deepagent-code.learning_terminal_artifact.v1",
+      path: terminalPath,
+      sha256: "0".repeat(64),
+      learning_admission_fingerprint: "0".repeat(64),
+    },
+    input: {
+      projectID: "requested-project",
+      sessionID: SESSION_ID,
+      runID: RUN_A_ID,
+      mode: "high",
+      roundState: createInitialRoundState("high"),
+      totalRounds: 1,
+      finalStatus: "completed",
+      trigger: "session_finalization",
+      policy: "auto_merge_safe_project",
+    },
+  }
+  const fingerprint = DeepAgentDurableLearning.admissionFingerprint(admission)
+  const terminal = CanonicalJson.stringify({
+    schema_version: "deepagent_global_run_state.v1",
+    run_id: RUN_A_ID,
+    generic_agent_session_id: SESSION_ID,
+    parent_generic_agent_session_id: null,
+    goal_id: null,
+    agent_mode: "high",
+    state: "completed",
+    updated_at: "2026-08-14T00:00:00.000Z",
+    learning_admission_fingerprint: fingerprint,
+  })
+  const bound: Admission = {
+    ...admission,
+    terminalArtifact: {
+      ...admission.terminalArtifact,
+      sha256: Hash.sha256(terminal),
+      learning_admission_fingerprint: fingerprint,
+    },
+  }
+  writeFileSync(terminalPath, terminal)
+  writeFileSync(receiptPath, CanonicalJson.stringify(DeepAgentDurableLearning.localAdmissionReceipt(bound, "submitted")))
+}
+
+function seedProjectAndSession(db: Database.Interface["db"], workspace: string) {
+  return Effect.gen(function* () {
+    yield* db.insert(ProjectTable).values({
+      id: Project.ID.make(DATABASE_PROJECT_ID),
+      worktree: AbsolutePath.make(workspace),
+      sandboxes: [],
+      time_created: 1,
+      time_updated: 1,
+    })
+    yield* db.insert(SessionTable).values({
+      id: SessionSchema.ID.make(SESSION_ID),
+      project_id: Project.ID.make(DATABASE_PROJECT_ID),
+      slug: SESSION_ID,
+      directory: workspace,
+      title: SESSION_ID,
+      version: "1",
+      time_created: 1,
+      time_updated: 1,
+    })
+  })
+}
+
+const resolveScope = (directory: string) =>
+  Effect.gen(function* () {
+    const identity = yield* (yield* LocationIdentity.Service).resolve({
+      boundary: { kind: "implicit_local" },
+      directory: AbsolutePath.make(directory),
+      project: { kind: "registered_root", observedProjectId: OBSERVED_PROJECT_ID },
+    })
+    return {
+      securityNamespaceId: identity.securityNamespaceId,
+      projectScopeKey: identity.projectScopeKey,
+      legacyProjectId: OBSERVED_PROJECT_ID,
+    } as Scope
+  })
+
+/**
+ * Publishes Run A's released knowledge through the legal publication path:
+ * an empty legacy baseline followed by an evaluated release of one durable document.
+ */
+function publishRunAKnowledge(db: Database.Interface["db"], scope: Scope) {
+  return Effect.gen(function* () {
+    const releasedDoc = document("knowledge-lifecycle-e2e", 1, scope.legacyProjectId)
+    const authority = documentAuthority([releasedDoc])
+    const baseline = yield* DeepAgentReleasedSnapshot.publish(
+      db,
+      publishInput({
+        snapshotId: "snapshot_lifecycle_e2e_baseline",
+        evaluationId: "evaluation_lifecycle_e2e_baseline",
+        scope,
+        releaseKind: "legacy_baseline",
+        documents: [],
+        now: 10,
+      }),
+      authority,
+    )
+    if (!baseline) return yield* Effect.die("baseline release is unavailable")
+    const released = yield* DeepAgentReleasedSnapshot.publish(
+      db,
+      publishInput({
+        snapshotId: "snapshot_lifecycle_e2e_run_a",
+        evaluationId: "evaluation_lifecycle_e2e_run_a",
+        scope,
+        expectedParentSnapshotId: baseline.snapshotId,
+        expectedGeneration: baseline.generation,
+        releaseKind: "evaluated",
+        documents: [releasedDoc],
+        now: 20,
+      }),
+      authority,
+    )
+    if (!released) return yield* Effect.die("Run A release is unavailable")
+    return released
+  })
+}
+
+function publishInput(
+  value: Pick<PublishInput, "snapshotId" | "evaluationId" | "scope" | "documents"> & Partial<PublishInput>,
+): PublishInput {
+  return {
+    expectedParentSnapshotId: null,
+    expectedGeneration: 0,
+    releaseKind: "evaluated",
+    verdict: "passed",
+    evaluationMatrix: { source: "learning-lifecycle-e2e" },
+    baselineRef: "learning-lifecycle-e2e",
+    repetitions: 1,
+    actor: { type: "system", id: "learning-lifecycle-e2e" },
+    ...value,
+  }
+}
+
+function document(id: string, version: number, legacyProjectId: string): DocumentRef {
+  return {
+    sourceStore: "project",
+    id,
+    version,
+    hash: `sha256:${Hash.sha256(`${id}:${version}`)}`,
+    type: "knowledge",
+    scope: `durable:project:${legacyProjectId}`,
+  }
+}
+
+function documentAuthority(documents: readonly DocumentRef[]) {
+  const refs = new Map(documents.map((ref) => [`${ref.sourceStore}:${ref.id}@${ref.version}`, ref]))
+  const store = (sourceStore: DocumentRef["sourceStore"]) =>
+    ({
+      get: (id: string, version?: number) => {
+        const ref = refs.get(`${sourceStore}:${id}@${version}`)
+        return ref ? storedDocument(ref) : null
+      },
+    }) as unknown as DocumentStore
+  return { userGlobal: store("user_global"), project: store("project") }
+}
+
+function storedDocument(ref: DocumentRef) {
+  return {
+    id: ref.id,
+    type: ref.type,
+    scope: ref.scope,
+    status: "active",
+    version: ref.version,
+    superseded_by: null,
+    hash: ref.hash,
+    created_round: null,
+    domain: null,
+    tags: [],
+    description: ref.id,
+    provenance: { source: "human" },
+    links: [],
+    confidence: { evidence_strength: "strong", support_count: 1 },
+    body: `${ref.id}@${ref.version}`,
+  }
+}
diff --git a/packages/deepagent-code/test/effect/runtime-flags.test.ts b/packages/deepagent-code/test/effect/runtime-flags.test.ts
index b67ac28d..571582d1 100644
--- a/packages/deepagent-code/test/effect/runtime-flags.test.ts
+++ b/packages/deepagent-code/test/effect/runtime-flags.test.ts
@@ -21,18 +21,6 @@ describe("RuntimeFlags", () => {
     }),
   )
 
-  it.effect("activity authority remains legacy-owned until explicitly cut over", () =>
-    Effect.gen(function* () {
-      const defaults = yield* readFlags.pipe(Effect.provide(fromConfig({})))
-      const durable = yield* readFlags.pipe(
-        Effect.provide(fromConfig({ DEEPAGENT_CODE_ACTIVITY_AUTHORITY: "durable" })),
-      )
-
-      expect(defaults.activityAuthority).toBe("legacy")
-      expect(durable.activityAuthority).toBe("durable")
-    }),
-  )
-
   it.effect("four-graph owner rollout flags default ON and retain independent kill-switches", () =>
     Effect.gen(function* () {
       const defaults = yield* readFlags.pipe(Effect.provide(fromConfig({})))
diff --git a/packages/deepagent-code/test/legacy-event-canonicalizer-runtime.test.ts b/packages/deepagent-code/test/legacy-event-canonicalizer-runtime.test.ts
new file mode 100644
index 00000000..584d6df2
--- /dev/null
+++ b/packages/deepagent-code/test/legacy-event-canonicalizer-runtime.test.ts
@@ -0,0 +1,152 @@
+import { afterEach, describe, expect } from "bun:test"
+import { Database } from "@deepagent-code/core/database/database"
+import { EventV2 } from "@deepagent-code/core/event"
+import {
+  EventArtifactTable,
+  EventSequenceTable,
+  EventSyncSequenceTable,
+  EventTable,
+} from "@deepagent-code/core/event/sql"
+import { MessageID } from "@/session/schema"
+import { Session } from "@/session/session"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { LegacyEventCanonicalizerRuntime } from "@/legacy-event-canonicalizer-runtime"
+import { eq, sql } from "drizzle-orm"
+import { Duration, Effect, Layer } from "effect"
+import { resetDatabase } from "./fixture/db"
+import { disposeAllInstances } from "./fixture/fixture"
+import { pollWithTimeout, testEffect } from "./lib/effect"
+
+afterEach(async () => {
+  await disposeAllInstances()
+  await resetDatabase()
+})
+
+const seedLegacyEvent = Effect.fn("Test.seedLegacyEvent")(function* () {
+  const sessions = yield* Session.Service
+  const { db } = yield* Database.Service
+  const session = yield* sessions.create({ title: "canonicalizer schedule" })
+  const messageID = MessageID.ascending()
+  const patch = "你".repeat(Math.ceil((EventV2.MAX_ENCODED_PAYLOAD_BYTES + 1024) / 3))
+  const message = {
+    role: "user" as const,
+    time: { created: Date.now() },
+    agent: "build",
+    summary: {
+      diffs: [{ file: "src/large.ts", patch, additions: 2, deletions: 1, status: "modified" as const }],
+    },
+  }
+  const sequence = yield* db
+    .select({ seq: EventSequenceTable.seq })
+    .from(EventSequenceTable)
+    .where(eq(EventSequenceTable.aggregate_id, session.id))
+    .get()
+    .pipe(Effect.orDie)
+  const eventID = EventV2.ID.make(`evt_canonicalizer_${messageID}`)
+  const syncSequence = yield* db
+    .update(EventSyncSequenceTable)
+    .set({ seq: sql`${EventSyncSequenceTable.seq} + 1` })
+    .where(eq(EventSyncSequenceTable.id, 1))
+    .returning({ seq: EventSyncSequenceTable.seq })
+    .get()
+    .pipe(Effect.orDie)
+  if (!syncSequence) return yield* Effect.die("sync sequence authority missing")
+  // fixture-exempt: direct legacy event row insert — reproduces the pre-canonicalizer oversized
+  // backlog that the durable schedule is meant to drain (no current runtime path emits v1
+  // message.updated payloads above the encoded-payload budget).
+  yield* db
+    .insert(EventTable)
+    .values({
+      id: eventID,
+      aggregate_id: session.id,
+      seq: (sequence?.seq ?? -1) + 1,
+      type: EventV2.versionedType("message.updated", 1),
+      data: { sessionID: session.id, info: { ...message, id: messageID, sessionID: session.id } },
+      sync_seq: syncSequence.seq,
+    })
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .update(EventSequenceTable)
+    .set({ seq: (sequence?.seq ?? -1) + 1 })
+    .where(eq(EventSequenceTable.aggregate_id, session.id))
+    .run()
+    .pipe(Effect.orDie)
+  return { session, eventID }
+})
+
+describe("legacy event canonicalizer durable schedule", () => {
+  describe("with the schedule enabled", () => {
+    const daemon = LegacyEventCanonicalizerRuntime.makeLayer({
+      pollInterval: Duration.millis(50),
+      maxEventsPerTick: 4,
+    }).pipe(
+      Layer.provide(EventV2.defaultLayer),
+      Layer.provide(RuntimeFlags.layer({ legacyEventCanonicalizer: true })),
+    )
+    const it = testEffect(Layer.mergeAll(Session.defaultLayer, Database.defaultLayer, daemon))
+
+    it.instance(
+      "drains the legacy artifact backlog without a manual maintenance call",
+      () =>
+        Effect.gen(function* () {
+          const input = yield* seedLegacyEvent()
+          const { db } = yield* Database.Service
+          const artifact = yield* pollWithTimeout(
+            db
+              .select()
+              .from(EventArtifactTable)
+              .where(eq(EventArtifactTable.event_id, input.eventID))
+              .get()
+              .pipe(Effect.orDie),
+            "canonicalizer schedule did not produce an artifact",
+            "10 seconds",
+          )
+          expect(artifact).toMatchObject({
+            kind: "legacy_message_diff",
+            codec_version: 2,
+            aggregate_id: input.session.id,
+            event_id: input.eventID,
+          })
+          // Evidence-only governance: the source event row stays intact (no deletion/VACUUM).
+          const source = yield* db
+            .select({ id: EventTable.id })
+            .from(EventTable)
+            .where(eq(EventTable.id, input.eventID))
+            .get()
+            .pipe(Effect.orDie)
+          expect(source?.id).toBe(input.eventID)
+        }),
+      { git: true },
+      30_000,
+    )
+  })
+
+  describe("with the schedule disabled", () => {
+    const daemon = LegacyEventCanonicalizerRuntime.makeLayer({ pollInterval: Duration.millis(50) }).pipe(
+      Layer.provide(EventV2.defaultLayer),
+      Layer.provide(RuntimeFlags.layer({ legacyEventCanonicalizer: false })),
+    )
+    const it = testEffect(Layer.mergeAll(Session.defaultLayer, Database.defaultLayer, daemon))
+
+    it.instance(
+      "leaves the backlog untouched while the flag stays off",
+      () =>
+        Effect.gen(function* () {
+          const input = yield* seedLegacyEvent()
+          const { db } = yield* Database.Service
+          yield* Effect.sleep("500 millis")
+          expect(
+            yield* db
+              .select()
+              .from(EventArtifactTable)
+              .where(eq(EventArtifactTable.event_id, input.eventID))
+              .all()
+              .pipe(Effect.orDie),
+          ).toEqual([])
+        }),
+      { git: true },
+      30_000,
+    )
+  })
+})
diff --git a/packages/deepagent-code/test/mcp/headers.test.ts b/packages/deepagent-code/test/mcp/headers.test.ts
index c51ed00d..3f0be97a 100644
--- a/packages/deepagent-code/test/mcp/headers.test.ts
+++ b/packages/deepagent-code/test/mcp/headers.test.ts
@@ -1,7 +1,13 @@
-import { describe, expect, mock, beforeEach } from "bun:test"
+import { afterAll, describe, expect, mock, beforeEach } from "bun:test"
 import { Effect } from "effect"
 import { testEffect } from "../lib/effect"
 
+// Release the mock.module registrations below when this file finishes so
+// later files import the real MCP SDK modules.
+afterAll(() => {
+  mock.restore()
+})
+
 // Track what options were passed to each transport constructor
 const transportCalls: Array<{
   type: "streamable" | "sse"
diff --git a/packages/deepagent-code/test/mcp/lifecycle.test.ts b/packages/deepagent-code/test/mcp/lifecycle.test.ts
index db04ec9c..ca877d98 100644
--- a/packages/deepagent-code/test/mcp/lifecycle.test.ts
+++ b/packages/deepagent-code/test/mcp/lifecycle.test.ts
@@ -1,8 +1,15 @@
-import { expect, mock, beforeEach } from "bun:test"
+import { afterAll, expect, mock, beforeEach } from "bun:test"
 import { Cause, Effect, Exit } from "effect"
 import type { MCP as MCPNS } from "../../src/mcp/index"
 import { testEffect } from "../lib/effect"
 
+// The mock.module registrations below persist for the whole process unless
+// restored; release them when this file finishes so later files import the
+// real MCP SDK modules.
+afterAll(() => {
+  mock.restore()
+})
+
 // --- Mock infrastructure ---
 
 // Per-client state for controlling mock behavior
diff --git a/packages/deepagent-code/test/mcp/oauth-auto-connect.test.ts b/packages/deepagent-code/test/mcp/oauth-auto-connect.test.ts
index 82fa1ba9..ff1675e6 100644
--- a/packages/deepagent-code/test/mcp/oauth-auto-connect.test.ts
+++ b/packages/deepagent-code/test/mcp/oauth-auto-connect.test.ts
@@ -1,7 +1,13 @@
-import { expect, mock, beforeEach } from "bun:test"
+import { afterAll, expect, mock, beforeEach } from "bun:test"
 import { Effect, Layer } from "effect"
 import { testEffect } from "../lib/effect"
 
+// Release the mock.module registrations below when this file finishes so
+// later files import the real MCP SDK modules.
+afterAll(() => {
+  mock.restore()
+})
+
 // Mock UnauthorizedError to match the SDK's class
 class MockUnauthorizedError extends Error {
   constructor(message?: string) {
diff --git a/packages/deepagent-code/test/mcp/oauth-browser.test.ts b/packages/deepagent-code/test/mcp/oauth-browser.test.ts
index ffad3b7f..c421d6ba 100644
--- a/packages/deepagent-code/test/mcp/oauth-browser.test.ts
+++ b/packages/deepagent-code/test/mcp/oauth-browser.test.ts
@@ -1,9 +1,15 @@
-import { expect, mock, beforeEach } from "bun:test"
+import { afterAll, expect, mock, beforeEach } from "bun:test"
 import { EventEmitter } from "events"
 import { Deferred, Effect, Layer, Option } from "effect"
 import { awaitWithTimeout, testEffect } from "../lib/effect"
 import type { MCP as MCPNS } from "../../src/mcp/index"
 
+// Release the mock.module registrations below when this file finishes so
+// later files import the real modules.
+afterAll(() => {
+  mock.restore()
+})
+
 // Track open() calls and control failure behavior
 let openShouldFail = false
 let openCalledWith: string | undefined
diff --git a/packages/deepagent-code/test/provider/transform.test.ts b/packages/deepagent-code/test/provider/transform.test.ts
index c5a66a78..c56f3ee5 100644
--- a/packages/deepagent-code/test/provider/transform.test.ts
+++ b/packages/deepagent-code/test/provider/transform.test.ts
@@ -1224,6 +1224,17 @@ describe("ProviderTransform.message - DeepSeek reasoning content", () => {
           },
         ],
       },
+      {
+        role: "tool",
+        content: [
+          {
+            type: "tool-result",
+            toolCallId: "test",
+            toolName: "bash",
+            output: { type: "text", value: "hello" },
+          },
+        ],
+      },
     ] as any[]
 
     const result = ProviderTransform.message(
@@ -1265,7 +1276,7 @@ describe("ProviderTransform.message - DeepSeek reasoning content", () => {
       {},
     )
 
-    expect(result).toHaveLength(1)
+    expect(result).toHaveLength(2)
     expect(result[0].content).toEqual([
       {
         type: "tool-call",
@@ -1387,6 +1398,24 @@ describe("ProviderTransform.message - surrogate sanitization", () => {
             toolName: "Read",
             input: { filePath: ".deepagent-code/tool/emoji.ts" },
           },
+          {
+            type: "tool-call",
+            toolCallId: "call-2",
+            toolName: "Read",
+            input: { filePath: ".deepagent-code/tool/emoji.ts" },
+          },
+          {
+            type: "tool-call",
+            toolCallId: "call-3",
+            toolName: "Read",
+            input: { filePath: ".deepagent-code/tool/emoji.ts" },
+          },
+          {
+            type: "tool-call",
+            toolCallId: "call-4",
+            toolName: "Read",
+            input: { filePath: ".deepagent-code/tool/emoji.ts" },
+          },
           {
             type: "tool-result",
             toolCallId: "call-2",
@@ -1407,24 +1436,41 @@ describe("ProviderTransform.message - surrogate sanitization", () => {
           },
         ],
       },
+      {
+        role: "assistant",
+        content: [
+          {
+            type: "tool-call",
+            toolCallId: "call-5",
+            toolName: "Read",
+            input: { filePath: ".deepagent-code/tool/emoji.ts" },
+          },
+          {
+            type: "tool-call",
+            toolCallId: "call-6",
+            toolName: "Read",
+            input: { filePath: ".deepagent-code/tool/emoji.ts" },
+          },
+        ],
+      },
       {
         role: "tool",
         content: [
           {
             type: "tool-result",
-            toolCallId: "call-5",
+            toolCallId: "call-1",
             toolName: "Read",
             output: { type: "text", value: text("tool text") },
           },
           {
             type: "tool-result",
-            toolCallId: "call-6",
+            toolCallId: "call-5",
             toolName: "Read",
             output: { type: "error-text", value: text("tool error") },
           },
           {
             type: "tool-result",
-            toolCallId: "call-7",
+            toolCallId: "call-6",
             toolName: "Read",
             output: { type: "content", value: [{ type: "text", text: text("tool content") }] },
           },
@@ -1440,12 +1486,12 @@ describe("ProviderTransform.message - surrogate sanitization", () => {
     expect(result[3].content).toBe(expected("assistant string"))
     expect(result[4].content[0].text).toBe(expected("assistant text"))
     expect(result[4].content[1].text).toBe(expected("assistant reasoning"))
-    expect(result[4].content[3].output.value).toBe(expected("assistant tool text"))
-    expect(result[4].content[4].output.value).toBe(expected("assistant tool error"))
-    expect(result[4].content[5].output.value[0].text).toBe(expected("assistant tool content"))
-    expect(result[5].content[0].output.value).toBe(expected("tool text"))
-    expect(result[5].content[1].output.value).toBe(expected("tool error"))
-    expect(result[5].content[2].output.value[0].text).toBe(expected("tool content"))
+    expect(result[4].content[6].output.value).toBe(expected("assistant tool text"))
+    expect(result[4].content[7].output.value).toBe(expected("assistant tool error"))
+    expect(result[4].content[8].output.value[0].text).toBe(expected("assistant tool content"))
+    expect(result[6].content[0].output.value).toBe(expected("tool text"))
+    expect(result[6].content[1].output.value).toBe(expected("tool error"))
+    expect(result[6].content[2].output.value[0].text).toBe(expected("tool content"))
     expect(result[2].content[1]).toEqual({ type: "image", image: "data:image/png;base64,abcd" })
   })
 })
@@ -1667,11 +1713,17 @@ describe("ProviderTransform.message - anthropic empty content filtering", () =>
           { type: "tool-call", toolCallId: "123", toolName: "bash", input: { command: "ls" } },
         ],
       },
+      {
+        role: "tool",
+        content: [
+          { type: "tool-result", toolCallId: "123", toolName: "bash", output: { type: "text", value: "ok" } },
+        ],
+      },
     ] as any[]
 
     const result = ProviderTransform.message(msgs, anthropicModel, {})
 
-    expect(result).toHaveLength(1)
+    expect(result).toHaveLength(2)
     expect(result[0].content).toHaveLength(1)
     expect(result[0].content[0]).toEqual({
       type: "tool-call",
@@ -1769,11 +1821,18 @@ describe("ProviderTransform.message - anthropic empty content filtering", () =>
           { type: "tool-call", toolCallId: "toolu_2", toolName: "glob", input: { pattern: "**/*.pdf" } },
         ],
       },
+      {
+        role: "tool",
+        content: [
+          { type: "tool-result", toolCallId: "toolu_1", toolName: "read", output: { type: "text", value: "ok" } },
+          { type: "tool-result", toolCallId: "toolu_2", toolName: "glob", output: { type: "text", value: "ok" } },
+        ],
+      },
     ] as any[]
 
     const result = ProviderTransform.message(msgs, anthropicModel, {}) as any[]
 
-    expect(result).toHaveLength(1)
+    expect(result).toHaveLength(2)
     expect(result[0].content).toMatchObject([
       { type: "text", text: "I checked your home directory and looked for PDF files." },
       { type: "tool-call", toolCallId: "toolu_1", toolName: "read", input: { filePath: "/root" } },
diff --git a/packages/deepagent-code/test/script/models-data.test.ts b/packages/deepagent-code/test/script/models-data.test.ts
index 0ccc79ce..5f0ec010 100644
--- a/packages/deepagent-code/test/script/models-data.test.ts
+++ b/packages/deepagent-code/test/script/models-data.test.ts
@@ -62,6 +62,20 @@ describe("models.dev build data", () => {
     )
   })
 
+  test("fails over to the next endpoint when the first one is unavailable", async () => {
+    const broken = Bun.serve({ port: 0, fetch: () => new Response(null, { status: 500 }) })
+    const healthy = Bun.serve({ port: 0, fetch: () => Response.json(catalog) })
+    const result = await loadModelsData({
+      environment: { DEEPAGENT_CODE_MODELS_URL: `${broken.url.origin}, ${healthy.url.origin}` },
+    }).finally(() => {
+      broken.stop(true)
+      healthy.stop(true)
+    })
+
+    expect(result.source).toBe(`${healthy.url.origin}/api.json`)
+    expect(JSON.parse(result.data)).toEqual(catalog)
+  })
+
   test("fails closed when models.dev is unavailable", async () => {
     await using directory = await fixture()
     const cacheFile = path.join(directory.root, "models.json")
diff --git a/packages/deepagent-code/test/script/release-evidence.test.ts b/packages/deepagent-code/test/script/release-evidence.test.ts
new file mode 100644
index 00000000..e1c7d52a
--- /dev/null
+++ b/packages/deepagent-code/test/script/release-evidence.test.ts
@@ -0,0 +1,188 @@
+import { afterEach, describe, expect, test } from "bun:test"
+import { appendFile, mkdtemp, rm, writeFile } from "node:fs/promises"
+import os from "node:os"
+import path from "node:path"
+import {
+  RELEASE_EVIDENCE_SCHEMA_VERSION,
+  ReleaseEvidenceError,
+  archiveGate,
+  buildManifest,
+  checkManifest,
+  findManifestPaths,
+  manifestPathFor,
+  parseEvidenceSpec,
+  serializeManifest,
+  sha256Hex,
+  sha256OfFile,
+} from "../../../../script/release-evidence"
+
+const COMMIT = "a".repeat(40)
+const FIXED_TIME = "2026-08-19T00:00:00Z"
+
+const roots: string[] = []
+
+async function newRoot(): Promise<string> {
+  const root = await mkdtemp(path.join(os.tmpdir(), "release-evidence-test-"))
+  roots.push(root)
+  return root
+}
+
+afterEach(async () => {
+  await Promise.all(roots.splice(0).map((root) => rm(root, { recursive: true, force: true })))
+})
+
+function baseArchiveOptions(root: string) {
+  return {
+    root,
+    version: "v4.1",
+    gateID: "release-gate-20260819",
+    commit: COMMIT,
+    date: "2026-08-19",
+    generatedAt: FIXED_TIME,
+    status: "passed" as const,
+    summary: "gate summary",
+    evidence: [
+      {
+        kind: "test-summary" as const,
+        label: "full-suite",
+        path: null,
+        sha256: null,
+        conclusion: "4967 pass / 0 fail / 5006 tests",
+      },
+    ],
+    signatures: [{ role: "release-owner", actor: "", at: "" }],
+  }
+}
+
+describe("release evidence manifest tooling", () => {
+  test("sha256 is the stable FIPS-180 digest", () => {
+    expect(sha256Hex("abc")).toBe("ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
+    expect(sha256Hex("")).toBe("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
+  })
+
+  test("manifest serialization is deterministic", () => {
+    const root = "unused"
+    const options = baseArchiveOptions(root)
+    expect(serializeManifest(buildManifest(options))).toBe(serializeManifest(buildManifest(options)))
+    const serialized = serializeManifest(buildManifest(options))
+    const parsed = JSON.parse(serialized) as Record<string, unknown>
+    expect(Object.keys(parsed)).toEqual([
+      "schema_version",
+      "version",
+      "gate_id",
+      "commit",
+      "date",
+      "generated_at",
+      "status",
+      "summary",
+      "evidence",
+      "signatures",
+    ])
+    expect(parsed.schema_version).toBe(RELEASE_EVIDENCE_SCHEMA_VERSION)
+  })
+
+  test("archive writes the manifest at release-evidence/<version>/<commit>/<gate>/manifest.json", async () => {
+    const root = await newRoot()
+    const target = archiveGate(baseArchiveOptions(root))
+    expect(target).toBe(manifestPathFor(root, "v4.1", COMMIT, "release-gate-20260819"))
+    const parsed = JSON.parse(await Bun.file(target).text()) as Record<string, unknown>
+    expect(parsed.commit).toBe(COMMIT)
+    expect(parsed.date).toBe("2026-08-19")
+    expect(parsed.generated_at).toBe(FIXED_TIME)
+  })
+
+  test("archive is immutable: regenerating the same gate fails without overwriting", async () => {
+    const root = await newRoot()
+    const target = archiveGate(baseArchiveOptions(root))
+    const before = await Bun.file(target).text()
+    expect(() => archiveGate({ ...baseArchiveOptions(root), summary: "changed" })).toThrow(ReleaseEvidenceError)
+    expect(await Bun.file(target).text()).toBe(before)
+  })
+
+  test("archive validates gate id, commit, date, status and evidence consistency", async () => {
+    const root = await newRoot()
+    expect(() => archiveGate({ ...baseArchiveOptions(root), gateID: "bad gate" })).toThrow(/--gate/)
+    expect(() => archiveGate({ ...baseArchiveOptions(root), commit: "abc" })).toThrow(/--commit/)
+    expect(() => archiveGate({ ...baseArchiveOptions(root), date: "2026-08-19" })).not.toThrow()
+    expect(() => archiveGate({ ...baseArchiveOptions(root), status: "green" as never })).toThrow(/--status/)
+    expect(() =>
+      archiveGate({
+        ...baseArchiveOptions(root),
+        gateID: "gate-2",
+        evidence: [
+          { kind: "log", label: "a", path: "x", sha256: null, conclusion: "c" },
+        ],
+      }),
+    ).toThrow(/path and sha256/)
+  })
+
+  test("check passes for intact file evidence and detects tampering", async () => {
+    const root = await newRoot()
+    const evidenceFile = path.join(root, "run.log")
+    await writeFile(evidenceFile, "original log line\n")
+    const options = baseArchiveOptions(root)
+    archiveGate({
+      ...options,
+      evidence: [
+        {
+          kind: "log",
+          label: "run-log",
+          path: "run.log",
+          sha256: sha256OfFile(evidenceFile),
+          conclusion: "captured run log",
+        },
+      ],
+    })
+    const manifestPath = manifestPathFor(root, "v4.1", COMMIT, "release-gate-20260819")
+
+    expect(checkManifest(manifestPath).ok).toBe(true)
+
+    await appendFile(evidenceFile, "tampered line\n")
+    const tampered = checkManifest(manifestPath)
+    expect(tampered.ok).toBe(false)
+    expect(tampered.failures.some((failure) => failure.includes("sha256 mismatch"))).toBe(true)
+
+    await rm(evidenceFile)
+    const missing = checkManifest(manifestPath)
+    expect(missing.ok).toBe(false)
+    expect(missing.failures.some((failure) => failure.includes("file missing"))).toBe(true)
+  })
+
+  test("check rejects invalid manifests without crashing", async () => {
+    const root = await newRoot()
+    const manifestPath = path.join(root, "broken.json")
+    await writeFile(manifestPath, "{ not json")
+    expect(checkManifest(manifestPath).ok).toBe(false)
+    expect(checkManifest(path.join(root, "absent.json")).failures[0]).toContain("not found")
+  })
+
+  test("findManifestPaths locates gates with and without a commit", async () => {
+    const root = await newRoot()
+    archiveGate(baseArchiveOptions(root))
+    archiveGate({ ...baseArchiveOptions(root), commit: "b".repeat(40) })
+    expect(findManifestPaths(root, "v4.1", "release-gate-20260819")).toHaveLength(2)
+    expect(findManifestPaths(root, "v4.1", "release-gate-20260819", COMMIT)).toHaveLength(1)
+    expect(findManifestPaths(root, "v4.1", "release-gate-20260819", "c".repeat(40))).toHaveLength(0)
+  })
+
+  test("parseEvidenceSpec hashes file evidence and keeps text-only entries null", async () => {
+    const root = await newRoot()
+    const textOnly = parseEvidenceSpec("test-summary:full-suite", root, "conclusion")
+    expect(textOnly).toEqual({
+      kind: "test-summary",
+      label: "full-suite",
+      path: null,
+      sha256: null,
+      conclusion: "conclusion",
+    })
+
+    const evidenceFile = path.join(root, "evidence.log")
+    await writeFile(evidenceFile, "abc")
+    const fileBacked = parseEvidenceSpec(`log:run-log:${evidenceFile}`, root, "conclusion")
+    expect(fileBacked.path).toBe("evidence.log")
+    expect(fileBacked.sha256).toBe(sha256Hex("abc"))
+
+    expect(() => parseEvidenceSpec("bogus:x", root, "c")).toThrow(/kind/)
+    expect(() => parseEvidenceSpec("log:missing:does-not-exist.log", root, "c")).toThrow(/not found/)
+  })
+})
diff --git a/packages/deepagent-code/test/script/run-live-llm-all.test.ts b/packages/deepagent-code/test/script/run-live-llm-all.test.ts
index 959d2405..ab590b09 100644
--- a/packages/deepagent-code/test/script/run-live-llm-all.test.ts
+++ b/packages/deepagent-code/test/script/run-live-llm-all.test.ts
@@ -12,6 +12,7 @@ import {
   runnerEnvironment,
   selectSuites,
   suites,
+  validateRegistryScripts,
   validateRunnerConfig,
   validateSuiteManifest,
 } from "../../../../script/run-live-llm-all"
@@ -364,6 +365,19 @@ describe("all real LLM test runner", () => {
     await expect(validateSuiteManifest()).resolves.toBeUndefined()
   })
 
+  test("every registered suite script exists in its owning package.json (QUAL-004)", async () => {
+    // Closes the gap left by validateSuiteManifest: det gates, setup, and
+    // desktop suites that run `bun run <script>` must also resolve, so a
+    // registry entry can never silently reference a removed script.
+    await expect(validateRegistryScripts()).resolves.toBeUndefined()
+    const scriptBacked = suites.filter(
+      (suite) =>
+        suite.package !== "root" &&
+        (suite.packageScript !== undefined || (suite.command[0] === "bun" && suite.command[1] === "run")),
+    )
+    expect(scriptBacked.length).toBeGreaterThanOrEqual(suites.length - 2)
+  })
+
   test("reads normalized autonomous scores without turning partial credit into a gate", () => {
     expect(
       parseEvaluationSummary({
diff --git a/packages/deepagent-code/test/server/httpapi-mdns.test.ts b/packages/deepagent-code/test/server/httpapi-mdns.test.ts
index 1964742b..358b6e1e 100644
--- a/packages/deepagent-code/test/server/httpapi-mdns.test.ts
+++ b/packages/deepagent-code/test/server/httpapi-mdns.test.ts
@@ -1,4 +1,4 @@
-import { beforeEach, describe, expect, mock, test } from "bun:test"
+import { afterAll, beforeEach, describe, expect, mock, test } from "bun:test"
 import * as Log from "@deepagent-code/core/util/log"
 import { withTimeout } from "../../src/util/timeout"
 
@@ -30,6 +30,12 @@ void mock.module("bonjour-service", () => ({
 // Import Server AFTER the mock so the MDNS module picks up the stub.
 const { Server } = await import("../../src/server/server")
 
+// Release the bonjour-service mock when this file finishes so later files
+// that import modules still unloaded see the real dependency.
+afterAll(() => {
+  mock.restore()
+})
+
 beforeEach(() => {
   events.length = 0
   nextOwner = 0
diff --git a/packages/deepagent-code/test/server/httpapi-packs-events.test.ts b/packages/deepagent-code/test/server/httpapi-packs-events.test.ts
new file mode 100644
index 00000000..a4b78637
--- /dev/null
+++ b/packages/deepagent-code/test/server/httpapi-packs-events.test.ts
@@ -0,0 +1,259 @@
+import { describe, expect } from "bun:test"
+import { mkdtempSync } from "node:fs"
+import { tmpdir } from "node:os"
+import path from "node:path"
+import { NodeHttpServer, NodeServices } from "@effect/platform-node"
+import { Context, Effect, Fiber, Layer, Option, Stream } from "effect"
+import { HttpClient, HttpClientRequest, HttpRouter } from "effect/unstable/http"
+import * as Socket from "effect/unstable/socket/Socket"
+import { ChildProcessSpawner } from "effect/unstable/process"
+import { eq } from "drizzle-orm"
+import { Database } from "@deepagent-code/core/database/database"
+import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { DeepAgentEventTable } from "@deepagent-code/core/deepagent/deepagent-event-sql"
+import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
+import { readPinnedPacks, writePinnedPacks } from "@deepagent-code/core/deepagent/pinned-packs"
+import { Flag } from "@deepagent-code/core/flag/flag"
+import {
+  packChangedIdempotencyKey,
+  publishPackChanged,
+} from "../../src/server/routes/instance/httpapi/handlers/deepagent"
+import { HttpApiApp } from "../../src/server/routes/instance/httpapi/server"
+import { ServerAuth } from "../../src/server/auth"
+import { resetDatabase } from "../fixture/db"
+import { tmpdirScoped } from "../fixture/fixture"
+import { testEffect } from "../lib/effect"
+
+// FEAT-003 — pack.changed eventing for packsPin/packsUnpin. Runs the REAL publish path
+// (publishPackChanged, the exact seam the handlers call after committing the pinned-set file)
+// against the REAL §A2 bus over an in-memory database — the same fixture pattern as
+// packages/core/test/deepagent-event-bus.test.ts.
+
+let clock = 0
+const now = () => clock++
+
+const database = Database.layerFromPath(":memory:")
+const busLayer = DeepAgentEventBus.layerWith({ now }).pipe(Layer.provideMerge(database))
+const it = testEffect(busLayer)
+
+const WORKSPACE = "/tmp/workspace-a"
+
+const collectPackEvents = (bus: DeepAgentEventBus.Interface) =>
+  Stream.runCollect(bus.replay({ from: 0, type: LMNEvents.PACK_CHANGED })).pipe(Effect.map((c) => Array.from(c)))
+
+describe("FEAT-003 pack.changed (pin/unpin eventing)", () => {
+  it.effect("pin publishes pack.changed with the after-write payload + set-hash idempotency key", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      // Mirror the handler flow: file write first, then publish with the authoritative after-write set.
+      const memoryDir = mkdtempSync(path.join(tmpdir(), "packs-events-"))
+      writePinnedPacks(memoryDir, ["pack-b", "pack-a"])
+      yield* publishPackChanged(bus, {
+        workspacePath: WORKSPACE,
+        packId: "pack-a",
+        action: "pin",
+        pinnedIds: readPinnedPacks(memoryDir),
+      })
+
+      const events = yield* collectPackEvents(bus)
+      expect(events.length).toBe(1)
+      const event = events[0]!
+      expect(event.type).toBe(LMNEvents.PACK_CHANGED) // type
+      expect(event.source).toBe("system")
+      expect(event.workspaceID).toBe(WORKSPACE)
+      expect(event.priority).toBe("normal")
+      // payload: workspacePath / packId / action / pinnedIds (the after-write set, deduped + sorted)
+      expect(event.payload).toEqual({
+        workspacePath: WORKSPACE,
+        packId: "pack-a",
+        action: "pin",
+        pinnedIds: ["pack-a", "pack-b"],
+      })
+      // idempotency key = workspace-scoped hash of the after-write set (+ action discriminator)
+      expect(event.idempotencyKey).toBe(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "pin", pinnedIds: ["pack-a", "pack-b"] }),
+      )
+    }),
+  )
+
+  it.effect("unpinning the LAST pack still publishes (empty after-write set)", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      yield* publishPackChanged(bus, {
+        workspacePath: WORKSPACE,
+        packId: "pack-solo",
+        action: "unpin",
+        pinnedIds: [], // the after-write set of an unpin of the last pinned pack
+      })
+
+      const events = yield* collectPackEvents(bus)
+      expect(events.length).toBe(1)
+      const event = events[0]!
+      expect(event.type).toBe(LMNEvents.PACK_CHANGED)
+      expect(event.payload).toEqual({
+        workspacePath: WORKSPACE,
+        packId: "pack-solo",
+        action: "unpin",
+        pinnedIds: [],
+      })
+      // the empty set still yields a stable, publishable key — distinct from any pin key
+      expect(event.idempotencyKey).toBe(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "unpin", pinnedIds: [] }),
+      )
+      expect(event.idempotencyKey).not.toBe(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "pin", pinnedIds: [] }),
+      )
+    }),
+  )
+
+  it.effect("repeated pin leaving the SAME after-write set does not re-publish (§A3 key dedupe)", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const input = {
+        workspacePath: WORKSPACE,
+        packId: "pack-a",
+        action: "pin" as const,
+        pinnedIds: ["pack-a", "pack-b"],
+      }
+      // first click publishes; a duplicate click (double-click / retried request) resolves to the
+      // same after-write set ⇒ same idempotency key ⇒ the bus returns the existing event, no new row.
+      yield* publishPackChanged(bus, input)
+      yield* publishPackChanged(bus, input)
+      yield* publishPackChanged(bus, { ...input, pinnedIds: ["pack-b", "pack-a", "pack-a"] }) // order/dupes vary
+
+      const events = yield* collectPackEvents(bus)
+      expect(events.length).toBe(1)
+      // and live subscribers see exactly ONE delivery too
+    }),
+  )
+
+  it.effect("idempotency key is stable under set order/duplication, scoped by workspace + action", () =>
+    Effect.gen(function* () {
+      const base = packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "pin", pinnedIds: ["a", "b"] })
+      // same set, different order/duplication ⇒ same key
+      expect(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "pin", pinnedIds: ["b", "a", "a"] }),
+      ).toBe(base)
+      // different workspace / action / set ⇒ different keys (no cross-workspace or cross-action swallow)
+      expect(
+        packChangedIdempotencyKey({ workspacePath: "/tmp/workspace-b", action: "pin", pinnedIds: ["a", "b"] }),
+      ).not.toBe(base)
+      expect(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "unpin", pinnedIds: ["a", "b"] }),
+      ).not.toBe(base)
+      expect(
+        packChangedIdempotencyKey({ workspacePath: WORKSPACE, action: "pin", pinnedIds: ["a", "b", "c"] }),
+      ).not.toBe(base)
+    }),
+  )
+
+  it.effect("pack.changed is subscribable — a live type-filtered subscriber receives it", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const fiber = yield* bus
+        .subscribe({ type: LMNEvents.PACK_CHANGED })
+        .pipe(Stream.take(1), Stream.runCollect, Effect.forkScoped)
+      yield* Effect.yieldNow
+      yield* publishPackChanged(bus, {
+        workspacePath: WORKSPACE,
+        packId: "pack-a",
+        action: "pin",
+        pinnedIds: ["pack-a"],
+      })
+      const received = Array.from(yield* Fiber.join(fiber))
+      expect(received.length).toBe(1)
+      expect(received[0]!.type).toBe(LMNEvents.PACK_CHANGED)
+      expect((received[0]!.payload as { packId: string }).packId).toBe("pack-a")
+    }),
+  )
+})
+
+// END-TO-END: the full production route tree (same harness as httpapi-instance.test.ts) — proves the
+// handler layer ACTUALLY obtains DeepAgentEventBus.Service and the event lands in the durable log.
+const e2eStateLayer = Layer.effectDiscard(
+  Effect.gen(function* () {
+    const originalWorkspaces = Flag.DEEPAGENT_CODE_EXPERIMENTAL_WORKSPACES
+    Flag.DEEPAGENT_CODE_EXPERIMENTAL_WORKSPACES = true
+    yield* Effect.promise(() => resetDatabase())
+    yield* Effect.addFinalizer(() =>
+      Effect.promise(async () => {
+        Flag.DEEPAGENT_CODE_EXPERIMENTAL_WORKSPACES = originalWorkspaces
+        await resetDatabase()
+      }),
+    )
+  }),
+)
+const e2eRoutes = HttpRouter.serve(HttpApiApp.routes, { disableListenLog: true, disableLogger: true }).pipe(
+  Layer.provide(Socket.layerWebSocketConstructorGlobal),
+  Layer.provideMerge(NodeHttpServer.layerTest),
+  Layer.provideMerge(NodeServices.layer),
+  Layer.provide(ServerAuth.Config.layer({ password: Option.none(), username: "deepagent-code" })),
+)
+const itE2e = testEffect(
+  Layer.mergeAll(
+    e2eStateLayer,
+    // same proven harness as httpapi-instance.test.ts; the cast silences serve()'s generic noise and
+    // keeps the two services the test body actually draws (HttpClient + the spawner tmpdirScoped needs).
+    e2eRoutes as unknown as Layer.Layer<
+      HttpClient.HttpClient | ChildProcessSpawner.ChildProcessSpawner,
+      never,
+      never
+    >,
+  ),
+)
+
+const directoryHeader = (dir: string) => HttpClientRequest.setHeader("x-deepagent-code-directory", dir)
+
+describe("FEAT-003 pack.changed end-to-end (full route tree)", () => {
+  itE2e.live(
+    "packsPin/packsUnpin publish pack.changed durably; a duplicate pin does not re-publish",
+    () =>
+      Effect.gen(function* () {
+        const dir = yield* tmpdirScoped({ git: true })
+        const call = (route: string, packId: string) =>
+          HttpClientRequest.post(route).pipe(
+            directoryHeader(dir),
+            HttpClientRequest.bodyJson({ packId }),
+            Effect.flatMap(HttpClient.execute),
+          )
+
+        const pin1 = yield* call("/deepagent/packs/pin", "feat-003-pack")
+        expect(pin1.status).toBe(200)
+        // duplicate click: same after-write set ⇒ same idempotency key ⇒ bus no-op
+        const pin2 = yield* call("/deepagent/packs/pin", "feat-003-pack")
+        expect(pin2.status).toBe(200)
+        // unpinning the LAST pack must still emit
+        const unpin = yield* call("/deepagent/packs/unpin", "feat-003-pack")
+        expect(unpin.status).toBe(200)
+
+        // Observe the durable log through a connection to the SAME db file the server uses.
+        const { db } = yield* Database.layerFromPath(Database.path()).pipe(
+          Layer.build,
+          Effect.map((ctx) => Context.get(ctx, Database.Service)),
+        )
+        const rows = yield* db
+          .select()
+          .from(DeepAgentEventTable)
+          .where(eq(DeepAgentEventTable.type, LMNEvents.PACK_CHANGED))
+          .all()
+          .pipe(Effect.orDie)
+        expect(rows.length).toBe(2) // pin + unpin; the duplicate pin was deduped on the idempotency key
+        const pin = rows.find((r) => (r.payload as { action: string }).action === "pin")!
+        const last = rows.find((r) => (r.payload as { action: string }).action === "unpin")!
+        expect(pin.idempotency_key).toBe(
+          packChangedIdempotencyKey({ workspacePath: dir, action: "pin", pinnedIds: ["feat-003-pack"] }),
+        )
+        expect(pin.payload).toEqual({
+          workspacePath: dir,
+          packId: "feat-003-pack",
+          action: "pin",
+          pinnedIds: ["feat-003-pack"],
+        })
+        expect(last.idempotency_key).toBe(
+          packChangedIdempotencyKey({ workspacePath: dir, action: "unpin", pinnedIds: [] }),
+        )
+        expect((last.payload as { pinnedIds: string[] }).pinnedIds).toEqual([])
+      }),
+    30_000,
+  )
+})
diff --git a/packages/deepagent-code/test/server/httpapi-provider-recovery.test.ts b/packages/deepagent-code/test/server/httpapi-provider-recovery.test.ts
index b8927001..10da0a83 100644
--- a/packages/deepagent-code/test/server/httpapi-provider-recovery.test.ts
+++ b/packages/deepagent-code/test/server/httpapi-provider-recovery.test.ts
@@ -11,11 +11,20 @@ import {
   SessionProviderAttemptRecoveryBridgeTable,
   SessionProviderAttemptResolutionTable,
   SessionProviderAttemptTable,
+  SessionProviderOwnerLeaseTable,
 } from "@deepagent-code/core/context-federation/session-sql"
+import {
+  LocationIdentityTable,
+  ProjectScopeIdentityTable,
+  SecurityNamespaceTable,
+} from "@deepagent-code/core/context-federation/sql"
 import { Prompt } from "@deepagent-code/core/session/prompt"
 import { SessionMessage } from "@deepagent-code/core/session/message"
 import { SessionHistoryStateTable, SessionInputTable, SessionTable } from "@deepagent-code/core/session/sql"
-import { and, eq } from "drizzle-orm"
+import { and, eq, sql } from "drizzle-orm"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { ProjectScopeKey, SecurityNamespaceID } from "@deepagent-code/core/context-federation/reference"
+import { ContextActivationReceipt } from "@/context-federation/activation-receipt"
 import { Effect, Layer } from "effect"
 import { MessageV2 } from "@/session/message-v2"
 import { SessionPromptEpochTable } from "@/session/prompt-epoch.sql"
@@ -93,6 +102,101 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
   const providerAttemptID = `attempt-${Hash.sha256(title).slice(0, 24)}`
   const activityID = `activity-${Hash.sha256(title).slice(0, 24)}`
   const selectionID = `selection-${Hash.sha256(title).slice(0, 24)}`
+  // Durable federation authority for the seeded selection/attempt/receipt chain: a synthesized
+  // namespace/scope identity plus the crashed owner's token (its lease is seeded live below).
+  const securityNamespaceID = `sec-${Hash.sha256(`${title}-ns`).slice(0, 24)}`
+  const projectScopeKey = `prjctx-${Hash.sha256(`${title}-scope`).slice(0, 24)}`
+  const ownerToken = `dead-${Hash.sha256(`${title}-owner`).slice(0, 20)}`
+  // 64-hex wire identity hashes the durable turn guards demand; derived per fixture title.
+  const finalRequestHash = Hash.sha256(`${title}-final-request`)
+  const preparedTurnHash = Hash.sha256(`${title}-prepared-turn`)
+  const systemStableHash = Hash.sha256(`${title}-system-stable`)
+  const systemVolatileHash = Hash.sha256(`${title}-system-volatile`)
+  const toolDefinitionHash = Hash.sha256(`${title}-tool-definition`)
+  const contextActivationFingerprint = Hash.sha256(`${title}-context-activation`)
+  // Typed federation fixture values the receipt columns demand: a not_requested decision whose
+  // requested/enabled/project fields mirror between eligibility and activation (the semantic
+  // guard compares them field-by-field as JSON).
+  const fixtureRequested: ContextFederationRollout.Requested = {
+    contextFederationShadow: false,
+    locationIndexesV2Shadow: false,
+    contextProjectionV2: false,
+    contextQueryToolsV2: false,
+    coreV2ExecutionOwner: false,
+  }
+  const fixtureEligibility: ContextFederationRollout.ProjectDecision = {
+    requested: fixtureRequested,
+    enabled: fixtureRequested,
+    blocked: {},
+    project: { projectScopeKey, stage: "all", bucket: 0, selected: false, killSwitch: false },
+  }
+  const fixtureReadiness: ContextFederationRollout.DerivedContextDataReadiness = {
+    revision: Hash.sha256(`${title}-readiness`),
+    state: "ready",
+    identityBound: true,
+    indexAvailable: true,
+    storageHealthy: true,
+    projectScopeKey,
+    reasons: [],
+    observedAt: now,
+    expiresAt: now + 600_000,
+  }
+  const fixtureActivation: ContextActivationReceipt.Receipt = {
+    schemaVersion: 1,
+    recordedAt: now,
+    readinessAgeMs: 0,
+    readinessExpiresInMs: 600_000,
+    outcome: "not_requested",
+    enabledCapabilities: [],
+    fallbackReasons: [],
+    decision: fixtureEligibility,
+    // The semantic guard forbids a selection reference without a bound selection row.
+    ...(providerAttempt ? { selection: { selectionId: selectionID, projectionHash: "projection" } } : {}),
+  }
+  // DB-clock timestamp expression (the lease triggers reject host-skewed values).
+  const dbNowMs = sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`
+
+  // The receipt/attempt owner guards demand a live exact owner lease at database time regardless
+  // of whether an attempt is seeded; the fixture receipt always belongs to the crashed owner.
+  yield* db
+    .insert(SessionProviderOwnerLeaseTable)
+    .values({
+      owner_token: ownerToken,
+      registered_at: dbNowMs,
+      heartbeat_at: dbNowMs,
+      lease_expires_at: sql`${dbNowMs} + 3600000`,
+      released_at: null,
+    } as never)
+    .run()
+    .pipe(Effect.orDie)
+
+  // Every receipt demands a durable released-knowledge scope authority: synthesize the minimal
+  // namespace/scope identity chain (the location identity is only needed by the selection guard
+  // and stays with the attempt branch below).
+  yield* db
+    .insert(SecurityNamespaceTable)
+    .values({
+      id: securityNamespaceID,
+      kind: "implicit_local",
+      binding_hash: Hash.sha256(`${title}-binding`),
+      created_at: now,
+      retired_at: null,
+    })
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(ProjectScopeIdentityTable)
+    .values({
+      security_namespace_id: securityNamespaceID,
+      project_scope_key: projectScopeKey,
+      project_kind: "registered_root",
+      project_identity_hash: Hash.sha256(`${title}-project`),
+      observed_project_id: `project-${Hash.sha256(title).slice(0, 16)}`,
+      created_at: now,
+      retired_at: null,
+    })
+    .run()
+    .pipe(Effect.orDie)
 
   if (providerAttempt) {
     yield* db
@@ -108,7 +212,7 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
       .run()
       .pipe(Effect.orDie)
     yield* db
-      .insert(SessionActivityTable)
+      .insert(SessionActivityTable) // fixture-exempt: seeds active activity for crash-recovery fixture
       .values({
         activity_id: activityID,
         session_id: session.id,
@@ -120,6 +224,20 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
       })
       .run()
       .pipe(Effect.orDie)
+    yield* db
+      .insert(LocationIdentityTable)
+      .values({
+        security_namespace_id: securityNamespaceID,
+        location_key: "local",
+        project_scope_key: projectScopeKey,
+        workspace_binding: null,
+        canonical_root: `/recovery-fixture/${Hash.sha256(title).slice(0, 8)}`,
+        observed_project_id: null,
+        created_at: now,
+        retired_at: null,
+      })
+      .run()
+      .pipe(Effect.orDie)
     yield* db
       .insert(SessionContextSelectionTable)
       .values({
@@ -129,6 +247,8 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
         revision: 0,
         trigger_input_id: user.id,
         location_key: "local",
+        security_namespace_id: SecurityNamespaceID.make(securityNamespaceID),
+        project_scope_key: ProjectScopeKey.make(projectScopeKey),
         query_fingerprint: "query",
         authorization_fingerprint: "authorization",
         authorization_epoch: 0,
@@ -136,6 +256,9 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
         selected_source_fingerprint: "sources",
         observed_location_mutation_epoch: 0,
         next_revalidation_at: now + 60_000,
+        released_knowledge_binding_state: "unavailable",
+        released_knowledge_exact_refs: [],
+        released_knowledge_exact_refs_fingerprint: "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
         graph_revisions: "{}",
         graph_statuses: "[]",
         selected_refs: "[]",
@@ -149,7 +272,7 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
       .run()
       .pipe(Effect.orDie)
     yield* db
-      .insert(SessionProviderAttemptTable)
+      .insert(SessionProviderAttemptTable) // fixture-exempt: admitted prepared attempt; walked to the crashed state below
       .values({
         attempt_id: providerAttemptID,
         session_id: session.id,
@@ -157,14 +280,21 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
         provider_turn_seq: 0,
         selection_id: selectionID,
         projection_hash: "projection",
-        request_hash: requestHash,
+        request_hash: `input-${requestHash}`,
         provider_id: model.providerID,
-        state: "indeterminate_after_crash",
+        owner_token: ownerToken,
+        state: "prepared",
         created_at: now,
-        error_code: "process_recovery",
       })
       .run()
       .pipe(Effect.orDie)
+    // Seal the attempt's wire identity once (prepared→prepared), the sole admission path.
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ prepared_turn_hash: preparedTurnHash, wire_request_hash: finalRequestHash })
+      .where(eq(SessionProviderAttemptTable.attempt_id, providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
   }
 
   yield* db
@@ -177,7 +307,7 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
     .run()
     .pipe(Effect.orDie)
   yield* db
-    .insert(SessionToolRequestReceiptTable)
+    .insert(SessionToolRequestReceiptTable) // fixture-exempt: bare 'preparing' receipt; walked through the durable lifecycle below
     .values({
       receipt_id: receiptID,
       request_ordinal: 1,
@@ -185,6 +315,12 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
       user_message_id: user.id,
       assistant_message_id: assistant.id,
       provider_attempt_id: providerAttempt ? providerAttemptID : null,
+      context_selection_id: providerAttempt ? selectionID : null,
+      released_knowledge_security_namespace_id: SecurityNamespaceID.make(securityNamespaceID),
+      released_knowledge_project_scope_key: ProjectScopeKey.make(projectScopeKey),
+      released_knowledge_binding_state: "unavailable",
+      released_knowledge_exact_refs: [],
+      released_knowledge_exact_refs_fingerprint: "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
       provider_id: model.providerID,
       model_id: model.modelID,
       protocol: "chat",
@@ -196,16 +332,101 @@ const seedRecovery = Effect.fn("HttpProviderRecoveryTest.seedRecovery")(function
       prompt_window_id: authority.window.windowID,
       effective_history_hash: authority.effectiveHistoryHash,
       request_input_hash: `input-${requestHash}`,
-      final_request_hash: requestHash,
+      // Context activation semantics are admission-time bindings (immutable after insert).
+      context_eligibility: fixtureEligibility,
+      context_readiness: fixtureReadiness,
+      context_activation: fixtureActivation,
+      context_activation_fingerprint: contextActivationFingerprint,
+      // The receipt insert guard only admits a bare provider_state='preparing' row; the seed then
+      // walks the durable lifecycle (seal selected refs → prepared → dispatching → crash) so the
+      // fixture lands on the same indeterminate state the legacy seed used to write directly.
+      provider_state: "preparing",
+      owner_token: ownerToken,
+      request_state: "prepared",
+      created_at: now,
+    })
+    .run()
+    .pipe(Effect.orDie)
+  // 1) seal selected refs once while still preparing.
+  yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        released_knowledge_selected_refs: [],
+        released_knowledge_selected_refs_fingerprint: "4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945",
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, receiptID))
+      .run()
+      .pipe(Effect.orDie)
+    // 2) seal the prepared turn and admit the receipt as prepared.
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        provider_state: "prepared",
+        final_request_hash: finalRequestHash,
+        provider_request_hash: finalRequestHash,
+        wire_request_hash: finalRequestHash,
+        prepared_turn_hash: preparedTurnHash,
+        system_stable_hash: systemStableHash,
+        system_volatile_hash: systemVolatileHash,
+        tool_definition_hash: toolDefinitionHash,
+        adapter_prepared_at: now,
+        final_offered_tool_ids: ["fixture_tool"],
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, receiptID))
+      .run()
+      .pipe(Effect.orDie)
+  // 3) dispatch: the attempt first when present (wire identity must match), then the receipt.
+  if (providerAttempt) {
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ state: "dispatching" })
+      .where(eq(SessionProviderAttemptTable.attempt_id, providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
+  }
+  yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({ provider_state: "dispatching", dispatching_at: now })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, receiptID))
+      .run()
+      .pipe(Effect.orDie)
+  // 4) simulate the process crash mid-dispatch: with an attempt present, the dead owner's lease
+  // is released, a recovery process takes a fresh lease, and the crash sweep marks the attempt
+  // indeterminate (the recovery owner guard demands exactly this stale-old/live-recovery pair).
+  if (providerAttempt) {
+    yield* db
+      .update(SessionProviderOwnerLeaseTable)
+      .set({ released_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)` })
+      .where(eq(SessionProviderOwnerLeaseTable.owner_token, ownerToken))
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionProviderOwnerLeaseTable)
+      .values({
+        owner_token: `recovery-${Hash.sha256(`${title}-recovery`).slice(0, 16)}`,
+        registered_at: dbNowMs,
+        heartbeat_at: dbNowMs,
+        lease_expires_at: sql`${dbNowMs} + 3600000`,
+        released_at: null,
+      } as never)
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ state: "indeterminate_after_crash", error_code: "process_recovery" })
+      .where(eq(SessionProviderAttemptTable.attempt_id, providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
+  }
+  yield* db
+    .update(SessionToolRequestReceiptTable)
+    .set({
       provider_state: "indeterminate_after_crash",
-      adapter_prepared_at: now,
-      dispatching_at: now,
       terminal_at: now,
-      owner_token: "dead-process",
       request_state: "dispatched",
       request_error_code: "provider_started_outcome_unknown_after_process_restart",
-      created_at: now,
     })
+    .where(eq(SessionToolRequestReceiptTable.receipt_id, receiptID))
     .run()
     .pipe(Effect.orDie)
   yield* db
diff --git a/packages/deepagent-code/test/server/httpapi-sdk.test.ts b/packages/deepagent-code/test/server/httpapi-sdk.test.ts
index b79c0b1e..6ac15861 100644
--- a/packages/deepagent-code/test/server/httpapi-sdk.test.ts
+++ b/packages/deepagent-code/test/server/httpapi-sdk.test.ts
@@ -994,7 +994,12 @@ describe("HttpApi SDK", () => {
 
         expect(session.status).toBe(200)
         expect(prompt.status).toBe(200)
-        expect(JSON.stringify(inputs[0])).toContain("project-rest-skill")
+        // Locate the request that carries the user prompt rather than assuming inputs[0]: under
+        // load an auxiliary request (title/summary/etc.) can reach the fake LLM first, and the
+        // skill-context guarantee belongs to the prompt request specifically.
+        const promptInput = inputs.find((input) => JSON.stringify(input).includes("hello skill context"))
+        expect(promptInput).toBeDefined()
+        expect(JSON.stringify(promptInput)).toContain("project-rest-skill")
       }),
     ),
   )
diff --git a/packages/deepagent-code/test/server/httpapi-workspace-routing.test.ts b/packages/deepagent-code/test/server/httpapi-workspace-routing.test.ts
index c5981c31..b0e0ef88 100644
--- a/packages/deepagent-code/test/server/httpapi-workspace-routing.test.ts
+++ b/packages/deepagent-code/test/server/httpapi-workspace-routing.test.ts
@@ -308,7 +308,8 @@ describe("HttpApi workspace routing middleware", () => {
           { contentType: "application/json" },
         ),
         HttpClient.execute,
-        Effect.timeout("2 seconds"),
+        // Wide ceiling only: under full-suite load the proxied round-trip can exceed 2s.
+        Effect.timeout("10 seconds"),
       )
 
       expect(response.status).toBe(201)
diff --git a/packages/deepagent-code/test/server/session-diff-missing-patch.test.ts b/packages/deepagent-code/test/server/session-diff-missing-patch.test.ts
index 9ae0146c..8c0a6d71 100644
--- a/packages/deepagent-code/test/server/session-diff-missing-patch.test.ts
+++ b/packages/deepagent-code/test/server/session-diff-missing-patch.test.ts
@@ -69,7 +69,8 @@ describe("session diff with missing patch (#26574)", () => {
         expect(yield* response.json).toEqual([])
       }),
     { git: true, config: { formatter: false, lsp: false } },
-    15_000,
+    // Wide ceiling only: the full-suite load can push these server-backed diffs past 15s.
+    30_000,
   )
 
   it.instance(
@@ -100,7 +101,8 @@ describe("session diff with missing patch (#26574)", () => {
         expect(yield* response.json).toEqual([{ file: "turn.ts", additions: 1, deletions: 0, status: "modified" }])
       }),
     { git: true, config: { formatter: false, lsp: false } },
-    15_000,
+    // Wide ceiling only: the full-suite load can push these server-backed diffs past 15s.
+    30_000,
   )
 
   it.instance(
@@ -159,7 +161,8 @@ describe("session diff with missing patch (#26574)", () => {
         expect(original?.diffs[0]?.patch).toBe(patch)
       }),
     { git: true, config: { formatter: false, lsp: false } },
-    15_000,
+    // Wide ceiling only: the full-suite load can push these server-backed diffs past 15s.
+    30_000,
   )
 
   it.instance(
@@ -200,6 +203,7 @@ describe("session diff with missing patch (#26574)", () => {
         ])
       }),
     { git: true, config: { formatter: false, lsp: false } },
-    15_000,
+    // Wide ceiling only: the full-suite load can push these server-backed diffs past 15s.
+    30_000,
   )
 })
diff --git a/packages/deepagent-code/test/session/agent-handoff-consumer.test.ts b/packages/deepagent-code/test/session/agent-handoff-consumer.test.ts
index 2cc182a6..66de31e0 100644
--- a/packages/deepagent-code/test/session/agent-handoff-consumer.test.ts
+++ b/packages/deepagent-code/test/session/agent-handoff-consumer.test.ts
@@ -2,6 +2,7 @@ import { describe, expect } from "bun:test"
 import { Effect, Layer } from "effect"
 import { AgentExecution } from "@deepagent-code/core/deepagent/agent-execution"
 import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { HandoffAdmission } from "@deepagent-code/core/deepagent/handoff-admission"
 import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
 import { SecurityResolvers } from "@deepagent-code/core/deepagent/security-resolvers"
 import { TaskPartitioner } from "@deepagent-code/core/deepagent/task-partitioner"
@@ -33,7 +34,9 @@ const agents: AgentDescriptor[] = [
 
 const makeLayer = (runtimeAllowed: boolean, runLoop = false) => {
   const database = Database.layerFromPath(":memory:")
-  const core = Layer.mergeAll(DeepAgentEventBus.layer, AgentExecution.layer).pipe(Layer.provideMerge(database))
+  const core = Layer.mergeAll(DeepAgentEventBus.layer, AgentExecution.layer, HandoffAdmission.layer).pipe(
+    Layer.provideMerge(database),
+  )
   const registry = Layer.succeed(AgentListProviderService, {
     listAgents: () => Effect.succeed(agents),
     findByTrigger: () => Effect.succeed([]),
@@ -185,4 +188,109 @@ describe("AgentHandoffConsumer", () => {
       ).toBe(false)
     }),
   )
+
+  allowed.effect("writes a durable admission receipt and settles it processing → accepted", () =>
+    Effect.gen(function* () {
+      const input = yield* seed
+      const consumer = yield* AgentHandoffConsumer.Service
+      const admission = yield* HandoffAdmission.Service
+      expect(yield* consumer.handle(input.event)).toBe("accepted")
+      const receipt = yield* admission.get("handoff_1")
+      expect(receipt?.state).toBe("accepted")
+      expect(receipt?.eventID).toBe(input.event.id)
+      expect(receipt?.workspaceID).toBe(input.original.workspaceID)
+      expect(receipt?.settledAt != null).toBe(true)
+      // a redelivery short-circuits on the TERMINAL receipt: still accepted, receipt untouched.
+      expect(yield* consumer.handle(input.event)).toBe("accepted")
+      const after = yield* admission.get("handoff_1")
+      expect(after?.state).toBe("accepted")
+      expect(after?.settledAt).toBe(receipt?.settledAt)
+    }),
+  )
+
+  allowed.effect("retry pump claims due deliveries atomically — a second claimant sees nothing", () =>
+    Effect.gen(function* () {
+      const input = yield* seed
+      const bus = yield* DeepAgentEventBus.Service
+      const at = input.event.createdAt + 1
+      const first = yield* bus.claimDue({ subscriptionGroup: HANDOFF_GROUP, claimantId: "claimant_a", now: at })
+      expect(first.deliveries.map((delivery) => delivery.eventID)).toContain(input.event.id)
+      // lease live → the same row is invisible to a competing claimant (RISK-001 mutual exclusion).
+      const second = yield* bus.claimDue({ subscriptionGroup: HANDOFF_GROUP, claimantId: "claimant_b", now: at })
+      expect(second.deliveries.length).toBe(0)
+    }),
+  )
+
+  allowed.effect("ack/nack are claim-token conditioned — a stale token cannot settle the delivery", () =>
+    Effect.gen(function* () {
+      const input = yield* seed
+      const bus = yield* DeepAgentEventBus.Service
+      const at = input.event.createdAt + 1
+      const claim = yield* bus.claimDue({ subscriptionGroup: HANDOFF_GROUP, claimantId: "claimant_a", now: at })
+      expect(claim.deliveries.length).toBe(1)
+      const wrong = { subscriptionGroup: HANDOFF_GROUP, eventID: input.event.id }
+      // a stale/forged token settles nothing.
+      expect(yield* bus.ackClaim({ ...wrong, claimToken: "not-the-token" })).toBe(false)
+      expect(yield* bus.nackClaim({ ...wrong, claimToken: "not-the-token", reason: "stale" })).toBe(false)
+      // the owning token settles exactly once; afterwards the same token is stale too.
+      expect(yield* bus.ackClaim({ ...wrong, claimToken: claim.claimToken })).toBe(true)
+      expect(yield* bus.ackClaim({ ...wrong, claimToken: claim.claimToken })).toBe(false)
+      expect(yield* bus.nackClaim({ ...wrong, claimToken: claim.claimToken, reason: "after settle" })).toBe(false)
+    }),
+  )
+
+  allowed.effect("crash recovery: an expired lease re-claims and a processing receipt is re-admitted", () =>
+    Effect.gen(function* () {
+      const input = yield* seed
+      const bus = yield* DeepAgentEventBus.Service
+      const admission = yield* HandoffAdmission.Service
+      const consumer = yield* AgentHandoffConsumer.Service
+      const execution = yield* AgentExecution.Service
+      const at = input.event.createdAt + 1
+      // The crashed worker claimed the delivery AND stamped its admission `processing`, then died
+      // before settling either. Both records stay exactly as the crash left them.
+      yield* bus.claimDue({ subscriptionGroup: HANDOFF_GROUP, claimantId: "crashed_worker", now: at })
+      yield* admission.begin({
+        handoffID: "handoff_1",
+        eventID: input.event.id,
+        workspaceID: input.original.workspaceID,
+        claimantID: "crashed_worker",
+        at,
+      })
+      expect((yield* admission.get("handoff_1"))?.state).toBe("processing")
+      // While the lease is live the pump must NOT re-drive the in-flight handoff.
+      expect(yield* consumer.pumpRetries(at + 1)).toBe(0)
+      expect((yield* admission.get("handoff_1"))?.state).toBe("processing")
+      // Once the lease lapses the row is re-claimable: `processing` means "not finished", so the
+      // pump re-admits it and settles the receipt to its terminal state.
+      expect(yield* consumer.pumpRetries(at + 5 * 60_000 + 1)).toBe(1)
+      const receipt = yield* admission.get("handoff_1")
+      expect(receipt?.state).toBe("accepted")
+      expect(receipt?.claimantID !== "crashed_worker").toBe(true)
+      const transferred = yield* execution.get({
+        workspaceID: input.original.workspaceID,
+        eventID: input.original.id,
+        taskID: input.task.id,
+      })
+      expect(transferred?.status).toBe("available")
+      expect(transferred?.assignedAgentID).toBe("agent_b")
+      // the delivery was acked under the claim — nothing due remains.
+      expect(yield* consumer.pumpRetries(at + 10 * 60_000)).toBe(0)
+    }),
+  )
+
+  denied.effect("settles the admission receipt processing → rejected with the reject reason", () =>
+    Effect.gen(function* () {
+      const input = yield* seed
+      const consumer = yield* AgentHandoffConsumer.Service
+      const admission = yield* HandoffAdmission.Service
+      expect(yield* consumer.handle(input.event)).toBe("rejected")
+      const receipt = yield* admission.get("handoff_1")
+      expect(receipt?.state).toBe("rejected")
+      expect(receipt?.reason).toBe("handoff_security_runtime_operation")
+      // a terminal reject is sticky across redelivery.
+      expect(yield* consumer.handle(input.event)).toBe("rejected")
+      expect((yield* admission.get("handoff_1"))?.state).toBe("rejected")
+    }),
+  )
 })
diff --git a/packages/deepagent-code/test/session/bug-008-activity-leak.test.ts b/packages/deepagent-code/test/session/bug-008-activity-leak.test.ts
new file mode 100644
index 00000000..b5752e8e
--- /dev/null
+++ b/packages/deepagent-code/test/session/bug-008-activity-leak.test.ts
@@ -0,0 +1,565 @@
+/**
+ * BUG-008 third leak window — deterministic reproduction + regression test.
+ *
+ * Window: a turn enters `state.startRunning` (session busy) but dies BEFORE its
+ * `materializeTurn` transaction commits. During that window a concurrent
+ * `SessionSteer.admit` sees no active activity and creates a PLACEHOLDER legacy
+ * activity (trigger = the steer admission, run_now/pending intent, no run row).
+ * When the turn dies, nothing terminalizes that placeholder: the outer prompt
+ * hook has no owned run yet, and `recoverActiveActivities` deliberately skips the
+ * "run_now + pending + no run" shape. Every later admission then collides with
+ * `SessionPromptIntent.Conflict: legacy activity <id> requires recovery before a
+ * new turn` — exactly the live steer-boundary/activity-progress failure.
+ *
+ * The fix adopts the steer placeholder inside the next turn's materialization
+ * transaction (route a of BUG-008), converging on the same durable state as the
+ * healthy race ordering (turn materializes first, steer attaches as role "steer").
+ *
+ * Harness mirrors prompt.test.ts; no real LLM is ever called (TestLLMServer only).
+ * No fixture rows are inserted directly — the leaked activity is produced through
+ * the legal steer.admit lifecycle.
+ */
+import { expect } from "bun:test"
+import { Effect, Fiber, Layer } from "effect"
+import path from "path"
+import { NodeFileSystem } from "@effect/platform-node"
+import { FetchHttpClient } from "effect/unstable/http"
+import { ConfigV1 } from "@deepagent-code/core/v1/config/config"
+import { SessionV2 } from "@deepagent-code/core/session"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
+import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
+import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { Search } from "@deepagent-code/core/filesystem/search"
+import { FSUtil } from "@deepagent-code/core/fs-util"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { Prompt } from "@deepagent-code/core/session/prompt"
+import { SessionIntentTable, SessionSteerTable } from "@deepagent-code/core/session/sql"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { EffectFlock } from "@deepagent-code/core/util/effect-flock"
+import * as Log from "@deepagent-code/core/util/log"
+import { AgentGateway } from "@deepagent-code/core/agent-gateway"
+import { Global } from "@deepagent-code/core/global"
+import { LLMClient, RequestExecutor, WebSocketExecutor } from "@deepagent-code/llm/route"
+import { eq } from "drizzle-orm"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { Agent as AgentSvc } from "../../src/agent/agent"
+import { Auth } from "../../src/auth"
+import { BackgroundJob } from "@/background/job"
+import { Command } from "../../src/command"
+import { Config } from "@/config/config"
+import { LSP } from "@/lsp/lsp"
+import { MCP } from "../../src/mcp"
+import { Permission } from "../../src/permission"
+import { Plugin } from "../../src/plugin"
+import { Provider as ProviderSvc } from "@/provider/provider"
+import { Env } from "../../src/env"
+import { Git } from "../../src/git"
+import { Image } from "../../src/image/image"
+import { Question } from "../../src/question"
+import { Todo } from "../../src/session/todo"
+import { Session } from "@/session/session"
+import { LLM } from "../../src/session/llm"
+import { SessionCompaction } from "../../src/session/compaction"
+import { SessionSummary } from "../../src/session/summary"
+import { Instruction } from "../../src/session/instruction"
+import { SessionProcessor } from "../../src/session/processor"
+import { SessionPrompt } from "../../src/session/prompt"
+import { SessionRevert } from "../../src/session/revert"
+import { SessionRunState } from "../../src/session/run-state"
+import { SessionSteer } from "../../src/session/steer"
+import { SessionStatus } from "../../src/session/status"
+import { Skill } from "../../src/skill"
+import { SystemPrompt } from "../../src/session/system"
+import { Snapshot } from "../../src/snapshot"
+import { ToolRegistry } from "@/tool/registry"
+import { DebugService } from "@/debug/service"
+import { RuntimeBase } from "@/runtime/base"
+import { Truncate } from "@/tool/truncate"
+import { Format } from "../../src/format"
+import { Reference } from "../../src/reference/reference"
+import { RepositoryCache } from "../../src/reference/repository-cache"
+import { ContextFederationReadiness } from "../../src/context-federation/readiness"
+import { PromptEpoch } from "@/session/prompt-epoch"
+import {
+  SessionLegacyActivityAdmissionTable,
+  SessionLegacyActivityRunTable,
+  SessionLegacyActivityTable,
+  SessionLegacyActivityTerminalTable,
+} from "@/session/activity-sql"
+import { TestInstance, testInstanceStoreLayer } from "../fixture/fixture"
+import { TestContextFacades } from "../fixture/context-facades"
+import { awaitWithTimeout, pollWithTimeout, testEffect } from "../lib/effect"
+import { TestLLMServer } from "../lib/llm-server"
+
+void Log.init({ print: false })
+
+const summary = Layer.succeed(
+  SessionSummary.Service,
+  SessionSummary.Service.of({
+    summarize: () => Effect.void,
+    diff: () => Effect.succeed([]),
+    computeDiff: () => Effect.succeed([]),
+    computeManifest: () => Effect.succeed(SessionSummary.emptyManifest()),
+  }),
+)
+
+const mcp = Layer.succeed(
+  MCP.Service,
+  MCP.Service.of({
+    status: () => Effect.succeed({}),
+    clients: () => Effect.succeed({}),
+    tools: () => Effect.succeed({}),
+    prompts: () => Effect.succeed({}),
+    resources: () => Effect.succeed({}),
+    add: () => Effect.succeed({ status: { status: "disabled" as const } }),
+    connect: () => Effect.void,
+    disconnect: () => Effect.void,
+    getPrompt: () => Effect.succeed(undefined),
+    readResource: () => Effect.succeed(undefined),
+    startAuth: () => Effect.die("unexpected MCP auth in bug-008 leak tests"),
+    authenticate: () => Effect.die("unexpected MCP auth in bug-008 leak tests"),
+    finishAuth: () => Effect.die("unexpected MCP auth in bug-008 leak tests"),
+    removeAuth: () => Effect.void,
+    supportsOAuth: () => Effect.succeed(false),
+    hasStoredTokens: () => Effect.succeed(false),
+    getAuthStatus: () => Effect.succeed("not_authenticated" as const),
+    catalog: () => Effect.succeed([]),
+    enableCatalogEntry: () => Effect.succeed({ status: {}, name: "x", config: { type: "local", command: [] } }),
+  }),
+)
+
+const lsp = Layer.succeed(
+  LSP.Service,
+  LSP.Service.of({
+    init: () => Effect.void,
+    status: () => Effect.succeed([]),
+    hasClients: () => Effect.succeed(false),
+    touchFile: () => Effect.void,
+    diagnostics: () => Effect.succeed({}),
+    hover: () => Effect.succeed(undefined),
+    definition: () => Effect.succeed([]),
+    references: () => Effect.succeed([]),
+    implementation: () => Effect.succeed([]),
+    documentSymbol: () => Effect.succeed([]),
+    workspaceSymbol: () => Effect.succeed([]),
+    prepareCallHierarchy: () => Effect.succeed([]),
+    incomingCalls: () => Effect.succeed([]),
+    outgoingCalls: () => Effect.succeed([]),
+    typeDefinition: () => Effect.succeed([]),
+    declaration: () => Effect.succeed([]),
+    prepareTypeHierarchy: () => Effect.succeed([]),
+    supertypes: () => Effect.succeed([]),
+    subtypes: () => Effect.succeed([]),
+    inlayHint: () => Effect.succeed([]),
+    codeAction: () => Effect.succeed([]),
+    executeCommand: () => Effect.succeed(null),
+    prepareRename: () => Effect.succeed(null),
+    rename: () => Effect.succeed(null),
+    documentHighlight: () => Effect.succeed([]),
+    foldingRange: () => Effect.succeed([]),
+    selectionRange: () => Effect.succeed([]),
+    completion: () => Effect.succeed(null),
+    signatureHelp: () => Effect.succeed(null),
+    serverCapabilities: () => Effect.succeed(undefined),
+    workspaceDiagnostics: () => Effect.succeed({}),
+  }),
+)
+
+const status = SessionStatus.layer.pipe(Layer.provideMerge(EventV2Bridge.defaultLayer))
+const run = SessionRunState.layer.pipe(Layer.provide(status))
+const infra = Layer.mergeAll(NodeFileSystem.layer, CrossSpawnSpawner.defaultLayer)
+
+// Mirrors prompt.test.ts: no-op RuntimeBase + inert DebugService stubs so the tool
+// registry builds without the Worktree→Project→Database chain.
+const stubRuntimeBaseLayer = Layer.succeed(
+  RuntimeBase.Service,
+  RuntimeBase.Service.of({
+    gate: () => Effect.void,
+    withIsolation: (_input, body) => body(""),
+    checkPrivileges: () => Effect.succeed([]),
+  }),
+)
+const debugStubDie = <A>(): Effect.Effect<A, never, never> =>
+  Effect.die("DebugService stub (not used in bug-008 leak tests)")
+const stubDebugServiceLayer = Layer.succeed(
+  DebugService.Service,
+  DebugService.Service.of({
+    start: debugStubDie,
+    setBreakpoints: debugStubDie,
+    continue: debugStubDie,
+    step: debugStubDie,
+    stackTrace: debugStubDie,
+    scopes: debugStubDie,
+    variables: debugStubDie,
+    evaluate: debugStubDie,
+    terminate: debugStubDie,
+    get: () => Effect.succeed(undefined),
+    list: () => Effect.succeed([]),
+  }),
+)
+
+const testLLMLayer = (runtimeFlags: Layer.Layer<RuntimeFlags.Service>) =>
+  LLM.layer.pipe(
+    Layer.provide(Auth.defaultLayer),
+    Layer.provide(Config.defaultLayer),
+    Layer.provide(ProviderSvc.defaultLayer),
+    Layer.provide(Plugin.defaultLayer),
+    Layer.provide(
+      Layer.mergeAll(
+        AgentGateway.layer({ enabled: true, runsDir: Global.Path.agent.runs }),
+        LLMClient.layer.pipe(Layer.provide(Layer.mergeAll(RequestExecutor.defaultLayer, WebSocketExecutor.layer))),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+  )
+
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
+function makePrompt() {
+  const runtimeFlags = RuntimeFlags.layer({
+    experimentalEventSystem: true,
+    coreV2ExecutionOwner: false,
+  })
+  const deps = Layer.mergeAll(
+    Session.defaultLayer,
+    Snapshot.defaultLayer,
+    testLLMLayer(runtimeFlags),
+    Env.defaultLayer,
+    AgentSvc.defaultLayer,
+    Command.defaultLayer,
+    Permission.defaultLayer,
+    Plugin.defaultLayer,
+    Config.defaultLayer,
+    Auth.defaultLayer,
+    ProviderSvc.defaultLayer,
+    lsp,
+    mcp,
+    FSUtil.defaultLayer,
+    BackgroundJob.defaultLayer,
+    status,
+    database,
+    EventV2Bridge.defaultLayer,
+    PromptEpoch.defaultLayer,
+  ).pipe(Layer.provideMerge(infra))
+  const question = Question.layer.pipe(Layer.provideMerge(deps))
+  const todo = Todo.layer.pipe(Layer.provideMerge(deps))
+  const registry = ToolRegistry.layer.pipe(
+    Layer.provide(TestContextFacades.layer),
+    Layer.provide(Skill.defaultLayer),
+    Layer.provide(FetchHttpClient.layer),
+    Layer.provide(CrossSpawnSpawner.defaultLayer),
+    Layer.provide(RepositoryCache.defaultLayer),
+    Layer.provide(Git.defaultLayer),
+    Layer.provide(EffectFlock.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(Search.defaultLayer),
+    Layer.provide(Format.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provide(stubDebugServiceLayer),
+    Layer.provide(stubRuntimeBaseLayer),
+    Layer.provideMerge(todo),
+    Layer.provideMerge(question),
+    Layer.provideMerge(deps),
+  )
+  const trunc = Truncate.layer.pipe(Layer.provideMerge(deps))
+  const proc = SessionProcessor.layer.pipe(
+    Layer.provide(summary),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+  )
+  const compact = SessionCompaction.layer.pipe(
+    Layer.provide(runtimeFlags),
+    Layer.provide(RequestExecutor.defaultLayer),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(deps),
+  )
+  const steer = SessionSteer.layer.pipe(Layer.provideMerge(deps))
+  return SessionPrompt.layer.pipe(
+    Layer.provide(SessionV2.defaultLayer),
+    Layer.provide(SessionProviderOwner.layer.pipe(Layer.provide(deps))),
+    Layer.provide(testInstanceStoreLayer),
+    Layer.provide(SessionRevert.defaultLayer),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(summary),
+    Layer.provideMerge(steer),
+    Layer.provideMerge(run),
+    Layer.provideMerge(compact),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(registry),
+    Layer.provideMerge(trunc),
+    Layer.provide(Instruction.defaultLayer),
+    Layer.provide(SystemPrompt.defaultLayer),
+    Layer.provide(LocationIdentity.layer.pipe(Layer.provide(deps))),
+    Layer.provide(
+      Layer.succeed(
+        ContextFederationReadiness.Service,
+        ContextFederationReadiness.Service.of({
+          snapshot: () => Effect.succeed(ContextFederationRollout.READINESS_READY_STUB),
+        }),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+    Layer.provide(summary),
+  )
+}
+
+const it = testEffect(Layer.mergeAll(TestLLMServer.layer, makePrompt()))
+
+const cfg = {
+  provider: {
+    test: {
+      name: "Test",
+      id: "test",
+      env: [],
+      npm: "@ai-sdk/openai-compatible",
+      models: {
+        "test-model": {
+          id: "test-model",
+          name: "Test Model",
+          attachment: false,
+          reasoning: false,
+          temperature: false,
+          tool_call: true,
+          release_date: "2025-01-01",
+          limit: { context: 100000, output: 10000 },
+          cost: { input: 0, output: 0 },
+          options: {},
+        },
+      },
+      options: {
+        apiKey: "test-key",
+        baseURL: "http://localhost:1/v1",
+        maxRetries: 0,
+      },
+    },
+  },
+}
+
+function providerCfg(url: string) {
+  return {
+    ...cfg,
+    provider: {
+      ...cfg.provider,
+      test: {
+        ...cfg.provider.test,
+        options: {
+          ...cfg.provider.test.options,
+          baseURL: url,
+        },
+      },
+    },
+  }
+}
+
+const writeText = Effect.fn("test.writeText")(function* (file: string, text: string) {
+  const fs = yield* FSUtil.Service
+  yield* fs.writeWithDirs(file, text)
+})
+
+const writeConfig = Effect.fn("test.writeConfig")(function* (dir: string, config: Partial<ConfigV1.Info>) {
+  yield* writeText(
+    path.join(dir, "deepagent-code.json"),
+    JSON.stringify({ $schema: "https://deepagent-code.ai/config.json", ...config }),
+  )
+})
+
+const useServerConfig = Effect.fn("test.useServerConfig")(function* (config: (url: string) => Partial<ConfigV1.Info>) {
+  const { directory: dir } = yield* TestInstance
+  const llm = yield* TestLLMServer
+  yield* writeConfig(dir, config(llm.url))
+  return { dir, llm }
+})
+
+it.instance(
+  "BUG-008 third window: next turn adopts the steer-placeholder activity left by a turn that died before materialization",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const steer = yield* SessionSteer.Service
+      const sessions = yield* Session.Service
+      const runState = yield* SessionRunState.Service
+      const { db } = yield* Database.Service
+      const session = yield* sessions.create({ title: "BUG-008 third window" })
+      const marker = path.join(dir, "bug008-coordinator-reserve.json")
+      const previousPoint = process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT
+      const previousRoot = process.env.DEEPAGENT_CODE_TEST_ROOT
+      const previousMarker = process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_MARKER
+
+      // Phase 1: the first turn dies INSIDE the third window — after the session
+      // went busy, before its materializeTurn transaction committed. While it is
+      // parked at the crash point, a concurrent steer.admit creates the
+      // placeholder activity (no active activity exists yet).
+      const placeholderID = yield* Effect.acquireUseRelease(
+        Effect.sync(() => {
+          process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT = "after_coordinator_reserve"
+          process.env.DEEPAGENT_CODE_TEST_ROOT = dir
+          process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_MARKER = marker
+        }),
+        () =>
+          Effect.gen(function* () {
+            const running = yield* prompt
+              .prompt({
+                sessionID: session.id,
+                agent: "build",
+                parts: [{ type: "text", text: "First turn dies before materialization" }],
+              })
+              .pipe(Effect.forkChild)
+            yield* pollWithTimeout(
+              Effect.promise(async () => ((await Bun.file(marker).exists()) ? true : undefined)),
+              "timed out waiting for the turn to reach the coordinator reserve crash point",
+            )
+            expect(yield* runState.isBusy(session.id)).toBe(true)
+            // Turn is parked BEFORE admit: no activity row exists yet.
+            expect(yield* db.select().from(SessionLegacyActivityTable).all().pipe(Effect.orDie)).toHaveLength(0)
+
+            // Concurrent steer while the turn is busy: steer.admit sees no active
+            // activity and creates the placeholder (trigger = steer admission).
+            yield* steer.admit({
+              sessionID: session.id,
+              prompt: new Prompt({ text: "STEER PLACEHOLDER FOR BUG-008" }),
+            })
+            const placeholder = yield* db
+              .select()
+              .from(SessionLegacyActivityTable)
+              .where(eq(SessionLegacyActivityTable.session_id, session.id))
+              .get()
+              .pipe(Effect.orDie)
+            expect(placeholder).toMatchObject({ state: "active" })
+            if (!placeholder) return yield* Effect.die("placeholder activity missing")
+
+            // Simulate the in-window death (instance dispose): kill the parked
+            // turn before it ever materializes. The outer prompt hook has no
+            // owned run yet, so nothing terminalizes the placeholder.
+            yield* awaitWithTimeout(prompt.cancel(session.id), "timed out cancelling the parked turn", "5 seconds")
+            yield* awaitWithTimeout(Fiber.await(running), "timed out joining the canceled parked turn", "5 seconds")
+            expect(yield* runState.isBusy(session.id)).toBe(false)
+
+            // The leak: placeholder stays active with no run row; recovery skips
+            // the run_now/pending/no-run shape, so it can never self-heal.
+            expect(
+              yield* db
+                .select()
+                .from(SessionLegacyActivityTable)
+                .where(eq(SessionLegacyActivityTable.session_id, session.id))
+                .all()
+                .pipe(Effect.orDie),
+            ).toMatchObject([{ state: "active", terminal_reason: null }])
+            expect(
+              yield* db
+                .select()
+                .from(SessionLegacyActivityRunTable)
+                .where(eq(SessionLegacyActivityRunTable.session_id, session.id))
+                .all()
+                .pipe(Effect.orDie),
+            ).toHaveLength(0)
+            return placeholder.activity_id
+          }),
+        () =>
+          Effect.sync(() => {
+            if (previousPoint === undefined) delete process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT
+            else process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT = previousPoint
+            if (previousRoot === undefined) delete process.env.DEEPAGENT_CODE_TEST_ROOT
+            else process.env.DEEPAGENT_CODE_TEST_ROOT = previousRoot
+            if (previousMarker === undefined) delete process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_MARKER
+            else process.env.DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_MARKER = previousMarker
+          }),
+      )
+
+      // Phase 2: the next prompt must NOT collide with the leaked placeholder.
+      // Pre-fix this fails with `SessionPromptIntent.Conflict: legacy activity
+      // <id> requires recovery before a new turn`; post-fix the turn adopts the
+      // placeholder and completes.
+      yield* llm.text("placeholder adopted and completed")
+      yield* llm.text("placeholder adopted and completed")
+      const next = yield* awaitWithTimeout(
+        prompt.prompt({
+          sessionID: session.id,
+          agent: "build",
+          parts: [{ type: "text", text: "Second turn after the in-window death" }],
+        }),
+        "timed out running the prompt after the leaked placeholder",
+        "15 seconds",
+      )
+      expect(next.parts.some((part) => part.type === "text" && part.text === "placeholder adopted and completed")).toBe(
+        true,
+      )
+
+      // Adoption converges on EXACTLY the healthy race ordering's durable
+      // state: ONE settled activity (the placeholder was undone, never
+      // duplicated), turn membership ordinal 0 + re-attached steer ordinal 1.
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTable)
+          .where(eq(SessionLegacyActivityTable.session_id, session.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([{ state: "settled" }])
+      const adopted = yield* db
+        .select()
+        .from(SessionLegacyActivityTable)
+        .where(eq(SessionLegacyActivityTable.session_id, session.id))
+        .get()
+        .pipe(Effect.orDie)
+      expect(adopted).toBeTruthy()
+      if (!adopted) return
+      expect(adopted.activity_id).not.toBe(placeholderID)
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityAdmissionTable)
+          .where(eq(SessionLegacyActivityAdmissionTable.activity_id, adopted.activity_id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([
+        { ordinal: 0, role: "trigger" },
+        { ordinal: 1, role: "steer" },
+      ])
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityRunTable)
+          .where(eq(SessionLegacyActivityRunTable.session_id, session.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([{ activity_id: adopted.activity_id, state: "completed" }])
+      // The orphaned steer was absorbed by the adopting turn, never lost.
+      expect(
+        yield* db
+          .select()
+          .from(SessionSteerTable)
+          .where(eq(SessionSteerTable.session_id, session.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([{ consumed_seq: expect.any(Number) }])
+      expect(
+        (yield* db
+          .select({ state: SessionIntentTable.execution_state })
+          .from(SessionIntentTable)
+          .where(eq(SessionIntentTable.delivery, "steer"))
+          .all()
+          .pipe(Effect.orDie)).every((intent) => intent.state !== "pending"),
+      ).toBe(true)
+    }),
+  { git: true },
+  30_000,
+)
diff --git a/packages/deepagent-code/test/session/bug-407-008-runtime.test.ts b/packages/deepagent-code/test/session/bug-407-008-runtime.test.ts
new file mode 100644
index 00000000..8a98d5ae
--- /dev/null
+++ b/packages/deepagent-code/test/session/bug-407-008-runtime.test.ts
@@ -0,0 +1,1745 @@
+/**
+ * BUG-407-008 §7.1 — runtime & read-projection deterministic regressions (#1-#17, #5 lives in
+ * prompt.test.ts). The computed `activityProgress` marker must always be derived on read from the
+ * durable progress/activity authority (session_activity_progress ⋈ session_legacy_activity), never
+ * persisted into message JSON, and crash/recovery paths must upgrade it monotonically without ever
+ * fabricating receipts, messages, revisions or provider invocations.
+ *
+ * Harness mirrors bug-008-activity-leak.test.ts (same layer stack, TestLLMServer only). Crash
+ * injection reuses src/session/activity-crash-test.ts via the DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_*
+ * env vars; the P1/P2/P6 points were added there + instrumented minimally in prompt.ts.
+ * No authority-table rows are ever inserted directly — everything is driven through the real state
+ * machine (prompt.prompt / TestLLMServer / cancel / recovery callers).
+ */
+import { expect, test } from "bun:test"
+import { Database as BunSQLite } from "bun:sqlite"
+import { existsSync } from "node:fs"
+import os from "node:os"
+import { Effect, Fiber, Layer } from "effect"
+import path from "path"
+import { NodeFileSystem } from "@effect/platform-node"
+import { FetchHttpClient } from "effect/unstable/http"
+import { ConfigV1 } from "@deepagent-code/core/v1/config/config"
+import { SessionV2 } from "@deepagent-code/core/session"
+import { SessionV1 } from "@deepagent-code/core/v1/session"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
+import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
+import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { Search } from "@deepagent-code/core/filesystem/search"
+import { FSUtil } from "@deepagent-code/core/fs-util"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { Prompt } from "@deepagent-code/core/session/prompt"
+import { MessageTable } from "@deepagent-code/core/session/sql"
+import { EventTable } from "@deepagent-code/core/event/sql"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { EffectFlock } from "@deepagent-code/core/util/effect-flock"
+import * as Log from "@deepagent-code/core/util/log"
+import { AgentGateway } from "@deepagent-code/core/agent-gateway"
+import { Global } from "@deepagent-code/core/global"
+import { LLMClient, RequestExecutor, WebSocketExecutor } from "@deepagent-code/llm/route"
+import { and, asc, eq } from "drizzle-orm"
+import { MessageID, SessionID } from "@/session/schema"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { Agent as AgentSvc } from "../../src/agent/agent"
+import { Auth } from "../../src/auth"
+import { BackgroundJob } from "@/background/job"
+import { Command } from "../../src/command"
+import { Config } from "@/config/config"
+import { LSP } from "@/lsp/lsp"
+import { MCP } from "../../src/mcp"
+import { Permission } from "../../src/permission"
+import { Plugin } from "../../src/plugin"
+import { Provider as ProviderSvc } from "@/provider/provider"
+import { Env } from "../../src/env"
+import { Git } from "../../src/git"
+import { Image } from "../../src/image/image"
+import { Question } from "../../src/question"
+import { Todo } from "../../src/session/todo"
+import { Session } from "@/session/session"
+import { LLM } from "../../src/session/llm"
+import { SessionCompaction } from "../../src/session/compaction"
+import { SessionSummary } from "../../src/session/summary"
+import { Instruction } from "../../src/session/instruction"
+import { SessionProcessor } from "../../src/session/processor"
+import { SessionPrompt } from "../../src/session/prompt"
+import { SessionPromptIntent } from "../../src/session/prompt-intent"
+import { SessionRevert } from "../../src/session/revert"
+import { SessionRunState } from "../../src/session/run-state"
+import { SessionSteer } from "../../src/session/steer"
+import { SessionStatus } from "../../src/session/status"
+import { Skill } from "../../src/skill"
+import { SystemPrompt } from "../../src/session/system"
+import { Snapshot } from "../../src/snapshot"
+import { ToolRegistry } from "@/tool/registry"
+import { DebugService } from "@/debug/service"
+import { RuntimeBase } from "@/runtime/base"
+import { Truncate } from "@/tool/truncate"
+import { Format } from "../../src/format"
+import { Reference } from "../../src/reference/reference"
+import { RepositoryCache } from "../../src/reference/repository-cache"
+import { ContextFederationReadiness } from "../../src/context-federation/readiness"
+import { PromptEpoch } from "@/session/prompt-epoch"
+import { MessageV2 } from "@/session/message-v2"
+import {
+  SessionActivityProgressTable,
+  SessionLegacyActivityAdmissionTable,
+  SessionLegacyActivityRunTable,
+  SessionLegacyActivityTable,
+  SessionLegacyActivityTerminalTable,
+} from "@/session/activity-sql"
+import { SessionToolRequestReceiptTable } from "@/session/tool-request-receipt.sql"
+import type { Point as ActivityCrashPoint } from "../../src/session/activity-crash-test"
+import { TestInstance, testInstanceStoreLayer } from "../fixture/fixture"
+import { TestContextFacades } from "../fixture/context-facades"
+import { awaitWithTimeout, pollWithTimeout, testEffect } from "../lib/effect"
+import { TestLLMServer, reply } from "../lib/llm-server"
+
+void Log.init({ print: false })
+
+void ProviderV2
+void ModelV2
+
+const summary = Layer.succeed(
+  SessionSummary.Service,
+  SessionSummary.Service.of({
+    summarize: () => Effect.void,
+    diff: () => Effect.succeed([]),
+    computeDiff: () => Effect.succeed([]),
+    computeManifest: () => Effect.succeed(SessionSummary.emptyManifest()),
+  }),
+)
+
+const mcp = Layer.succeed(
+  MCP.Service,
+  MCP.Service.of({
+    status: () => Effect.succeed({}),
+    clients: () => Effect.succeed({}),
+    tools: () => Effect.succeed({}),
+    prompts: () => Effect.succeed({}),
+    resources: () => Effect.succeed({}),
+    add: () => Effect.succeed({ status: { status: "disabled" as const } }),
+    connect: () => Effect.void,
+    disconnect: () => Effect.void,
+    getPrompt: () => Effect.succeed(undefined),
+    readResource: () => Effect.succeed(undefined),
+    startAuth: () => Effect.die("unexpected MCP auth in bug-407-008 runtime tests"),
+    authenticate: () => Effect.die("unexpected MCP auth in bug-407-008 runtime tests"),
+    finishAuth: () => Effect.die("unexpected MCP auth in bug-407-008 runtime tests"),
+    removeAuth: () => Effect.void,
+    supportsOAuth: () => Effect.succeed(false),
+    hasStoredTokens: () => Effect.succeed(false),
+    getAuthStatus: () => Effect.succeed("not_authenticated" as const),
+    catalog: () => Effect.succeed([]),
+    enableCatalogEntry: () => Effect.succeed({ status: {}, name: "x", config: { type: "local", command: [] } }),
+  }),
+)
+
+const lsp = Layer.succeed(
+  LSP.Service,
+  LSP.Service.of({
+    init: () => Effect.void,
+    status: () => Effect.succeed([]),
+    hasClients: () => Effect.succeed(false),
+    touchFile: () => Effect.void,
+    diagnostics: () => Effect.succeed({}),
+    hover: () => Effect.succeed(undefined),
+    definition: () => Effect.succeed([]),
+    references: () => Effect.succeed([]),
+    implementation: () => Effect.succeed([]),
+    documentSymbol: () => Effect.succeed([]),
+    workspaceSymbol: () => Effect.succeed([]),
+    prepareCallHierarchy: () => Effect.succeed([]),
+    incomingCalls: () => Effect.succeed([]),
+    outgoingCalls: () => Effect.succeed([]),
+    typeDefinition: () => Effect.succeed([]),
+    declaration: () => Effect.succeed([]),
+    prepareTypeHierarchy: () => Effect.succeed([]),
+    supertypes: () => Effect.succeed([]),
+    subtypes: () => Effect.succeed([]),
+    inlayHint: () => Effect.succeed([]),
+    codeAction: () => Effect.succeed([]),
+    executeCommand: () => Effect.succeed(null),
+    prepareRename: () => Effect.succeed(null),
+    rename: () => Effect.succeed(null),
+    documentHighlight: () => Effect.succeed([]),
+    foldingRange: () => Effect.succeed([]),
+    selectionRange: () => Effect.succeed([]),
+    completion: () => Effect.succeed(null),
+    signatureHelp: () => Effect.succeed(null),
+    serverCapabilities: () => Effect.succeed(undefined),
+    workspaceDiagnostics: () => Effect.succeed({}),
+  }),
+)
+
+const status = SessionStatus.layer.pipe(Layer.provideMerge(EventV2Bridge.defaultLayer))
+const run = SessionRunState.layer.pipe(Layer.provide(status))
+const infra = Layer.mergeAll(NodeFileSystem.layer, CrossSpawnSpawner.defaultLayer)
+
+const stubRuntimeBaseLayer = Layer.succeed(
+  RuntimeBase.Service,
+  RuntimeBase.Service.of({
+    gate: () => Effect.void,
+    withIsolation: (_input, body) => body(""),
+    checkPrivileges: () => Effect.succeed([]),
+  }),
+)
+const debugStubDie = <A>(): Effect.Effect<A, never, never> =>
+  Effect.die("DebugService stub (not used in bug-407-008 runtime tests)")
+const stubDebugServiceLayer = Layer.succeed(
+  DebugService.Service,
+  DebugService.Service.of({
+    start: debugStubDie,
+    setBreakpoints: debugStubDie,
+    continue: debugStubDie,
+    step: debugStubDie,
+    stackTrace: debugStubDie,
+    scopes: debugStubDie,
+    variables: debugStubDie,
+    evaluate: debugStubDie,
+    terminate: debugStubDie,
+    get: () => Effect.succeed(undefined),
+    list: () => Effect.succeed([]),
+  }),
+)
+
+const testLLMLayer = (runtimeFlags: Layer.Layer<RuntimeFlags.Service>) =>
+  LLM.layer.pipe(
+    Layer.provide(Auth.defaultLayer),
+    Layer.provide(Config.defaultLayer),
+    Layer.provide(ProviderSvc.defaultLayer),
+    Layer.provide(Plugin.defaultLayer),
+    Layer.provide(
+      Layer.mergeAll(
+        AgentGateway.layer({ enabled: true, runsDir: Global.Path.agent.runs }),
+        LLMClient.layer.pipe(Layer.provide(Layer.mergeAll(RequestExecutor.defaultLayer, WebSocketExecutor.layer))),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+  )
+
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
+function makePrompt() {
+  const runtimeFlags = RuntimeFlags.layer({
+    experimentalEventSystem: true,
+    coreV2ExecutionOwner: false,
+  })
+  const deps = Layer.mergeAll(
+    Session.defaultLayer,
+    Snapshot.defaultLayer,
+    testLLMLayer(runtimeFlags),
+    Env.defaultLayer,
+    AgentSvc.defaultLayer,
+    Command.defaultLayer,
+    Permission.defaultLayer,
+    Plugin.defaultLayer,
+    Config.defaultLayer,
+    Auth.defaultLayer,
+    ProviderSvc.defaultLayer,
+    lsp,
+    mcp,
+    FSUtil.defaultLayer,
+    BackgroundJob.defaultLayer,
+    status,
+    database,
+    EventV2Bridge.defaultLayer,
+    PromptEpoch.defaultLayer,
+  ).pipe(Layer.provideMerge(infra))
+  const question = Question.layer.pipe(Layer.provideMerge(deps))
+  const todo = Todo.layer.pipe(Layer.provideMerge(deps))
+  const registry = ToolRegistry.layer.pipe(
+    Layer.provide(TestContextFacades.layer),
+    Layer.provide(Skill.defaultLayer),
+    Layer.provide(FetchHttpClient.layer),
+    Layer.provide(CrossSpawnSpawner.defaultLayer),
+    Layer.provide(RepositoryCache.defaultLayer),
+    Layer.provide(Git.defaultLayer),
+    Layer.provide(EffectFlock.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(Search.defaultLayer),
+    Layer.provide(Format.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provide(stubDebugServiceLayer),
+    Layer.provide(stubRuntimeBaseLayer),
+    Layer.provideMerge(todo),
+    Layer.provideMerge(question),
+    Layer.provideMerge(deps),
+  )
+  const trunc = Truncate.layer.pipe(Layer.provideMerge(deps))
+  const proc = SessionProcessor.layer.pipe(
+    Layer.provide(summary),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+  )
+  const compact = SessionCompaction.layer.pipe(
+    Layer.provide(runtimeFlags),
+    Layer.provide(RequestExecutor.defaultLayer),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(deps),
+  )
+  const steer = SessionSteer.layer.pipe(Layer.provideMerge(deps))
+  return SessionPrompt.layer.pipe(
+    Layer.provide(SessionV2.defaultLayer),
+    Layer.provide(SessionProviderOwner.layer.pipe(Layer.provide(deps))),
+    Layer.provide(testInstanceStoreLayer),
+    Layer.provide(SessionRevert.defaultLayer),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(summary),
+    Layer.provideMerge(steer),
+    Layer.provideMerge(run),
+    Layer.provideMerge(compact),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(registry),
+    Layer.provideMerge(trunc),
+    Layer.provide(Instruction.defaultLayer),
+    Layer.provide(SystemPrompt.defaultLayer),
+    Layer.provide(LocationIdentity.layer.pipe(Layer.provide(deps))),
+    Layer.provide(
+      Layer.succeed(
+        ContextFederationReadiness.Service,
+        ContextFederationReadiness.Service.of({
+          snapshot: () => Effect.succeed(ContextFederationRollout.READINESS_READY_STUB),
+        }),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+    Layer.provide(summary),
+  )
+}
+
+const it = testEffect(Layer.mergeAll(TestLLMServer.layer, makePrompt()))
+
+const cfg = {
+  provider: {
+    test: {
+      name: "Test",
+      id: "test",
+      env: [],
+      npm: "@ai-sdk/openai-compatible",
+      models: {
+        "test-model": {
+          id: "test-model",
+          name: "Test Model",
+          attachment: false,
+          reasoning: false,
+          temperature: false,
+          tool_call: true,
+          release_date: "2025-01-01",
+          limit: { context: 100000, output: 10000 },
+          cost: { input: 0, output: 0 },
+          options: {},
+        },
+      },
+      options: {
+        apiKey: "test-key",
+        baseURL: "http://localhost:1/v1",
+        maxRetries: 0,
+      },
+    },
+  },
+}
+
+function providerCfg(url: string) {
+  return {
+    ...cfg,
+    provider: {
+      ...cfg.provider,
+      test: {
+        ...cfg.provider.test,
+        options: {
+          ...cfg.provider.test.options,
+          baseURL: url,
+        },
+      },
+    },
+  }
+}
+
+const writeText = Effect.fn("test.writeText")(function* (file: string, text: string) {
+  const fs = yield* FSUtil.Service
+  yield* fs.writeWithDirs(file, text)
+})
+
+const writeConfig = Effect.fn("test.writeConfig")(function* (dir: string, config: Partial<ConfigV1.Info>) {
+  yield* writeText(
+    path.join(dir, "deepagent-code.json"),
+    JSON.stringify({ $schema: "https://deepagent-code.ai/config.json", ...config }),
+  )
+})
+
+const useServerConfig = Effect.fn("test.useServerConfig")(function* (config: (url: string) => Partial<ConfigV1.Info>) {
+  const { directory: dir } = yield* TestInstance
+  const llm = yield* TestLLMServer
+  yield* writeConfig(dir, config(llm.url))
+  return { dir, llm }
+})
+
+const allowAll = [{ permission: "*", pattern: "*", action: "allow" }] as const
+
+// ---------------------------------------------------------------------------
+// crash-env helpers (mirrors bug-008's acquireUseRelease env handling)
+// ---------------------------------------------------------------------------
+const CRASH_ENV = {
+  point: "DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_POINT",
+  root: "DEEPAGENT_CODE_TEST_ROOT",
+  marker: "DEEPAGENT_CODE_TEST_ACTIVITY_CRASH_MARKER",
+} as const
+
+function setCrashEnv(point: ActivityCrashPoint, dir: string, marker: string) {
+  const prev = {
+    point: process.env[CRASH_ENV.point],
+    root: process.env[CRASH_ENV.root],
+    marker: process.env[CRASH_ENV.marker],
+  }
+  process.env[CRASH_ENV.point] = point
+  process.env[CRASH_ENV.root] = dir
+  process.env[CRASH_ENV.marker] = marker
+  return prev
+}
+
+function restoreCrashEnv(prev: ReturnType<typeof setCrashEnv>) {
+  const apply = (key: string, value: string | undefined) => {
+    if (value === undefined) delete process.env[key]
+    else process.env[key] = value
+  }
+  apply(CRASH_ENV.point, prev.point)
+  apply(CRASH_ENV.root, prev.root)
+  apply(CRASH_ENV.marker, prev.marker)
+}
+
+const crashScoped = <A, E, R>(
+  input: { dir: string; point: ActivityCrashPoint; marker: string },
+  body: Effect.Effect<A, E, R>,
+) =>
+  Effect.acquireUseRelease(
+    Effect.sync(() => setCrashEnv(input.point, input.dir, input.marker)),
+    () => body,
+    (prev) => Effect.sync(() => restoreCrashEnv(prev)),
+  )
+
+const waitMarker = (marker: string, what: string) =>
+  pollWithTimeout(
+    Effect.promise(async () => ((await Bun.file(marker).exists()) ? true : undefined)),
+    what,
+    "15 seconds",
+  )
+
+// ---------------------------------------------------------------------------
+// read-side helpers
+// ---------------------------------------------------------------------------
+type MessageUpdatedPayload = {
+  sessionID?: string
+  info?: { id?: string; activityProgress?: SessionV1.ActivityProgress }
+}
+
+const messageUpdatedEvents = (db: Database.Interface["db"], sessionID: string) =>
+  db
+    .select()
+    .from(EventTable)
+    .where(and(eq(EventTable.aggregate_id, sessionID), eq(EventTable.type, "message.updated.1")))
+    .orderBy(asc(EventTable.seq))
+    .all()
+    .pipe(Effect.orDie)
+
+const eventsForMessage = (rows: { data: Record<string, unknown> }[], messageID: string) =>
+  rows.filter((row) => (row.data as MessageUpdatedPayload).info?.id === messageID)
+
+const markerEventsForMessage = (rows: { data: Record<string, unknown> }[], messageID: string) =>
+  eventsForMessage(rows, messageID).filter((row) => (row.data as MessageUpdatedPayload).info?.activityProgress)
+
+const markerOf = (info: SessionV1.Info) => (info.role === "assistant" ? info.activityProgress : undefined)
+
+const progressRows = (db: Database.Interface["db"], activityID: string) =>
+  db
+    .select()
+    .from(SessionActivityProgressTable)
+    .where(eq(SessionActivityProgressTable.activity_id, activityID))
+    .orderBy(asc(SessionActivityProgressTable.revision))
+    .all()
+    .pipe(Effect.orDie)
+
+const activityForSession = (db: Database.Interface["db"], sessionID: string) =>
+  db
+    .select()
+    .from(SessionLegacyActivityTable)
+    .where(eq(SessionLegacyActivityTable.session_id, sessionID))
+    .all()
+    .pipe(Effect.orDie)
+
+const dbProvide = <A, E>(effect: Effect.Effect<A, E, Database.Service>) =>
+  Effect.gen(function* () {
+    const database = yield* Database.Service
+    return yield* effect.pipe(Effect.provideService(Database.Service, database))
+  })
+
+// ---------------------------------------------------------------------------
+// §7.1 #1 — reasoning+tool without text: settlement only writes the progress
+// authority; hydrate computes the marker; text_part_id stays NULL.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #1: reasoning+tool turn settles only the progress authority with NULL text_part_id",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "reasoning+tool settlement", permission: allowAll })
+
+      yield* llm.push(
+        reply()
+          .reason("checking the workspace first")
+          .tool("bash", { command: "echo bug-407-008", description: "emit marker", workdir: path.resolve(dir) }),
+      )
+      yield* llm.text("turn complete")
+      yield* awaitWithTimeout(
+        prompt.prompt({
+          sessionID: session.id,
+          agent: "build",
+          parts: [{ type: "text", text: "reason then call a tool, no text before the tool" }],
+        }),
+        "timed out running the reasoning+tool turn",
+        "20 seconds",
+      )
+
+      const msgs = yield* sessions.messages({ sessionID: session.id })
+      const toolAssistant = msgs.find(
+        (message) => message.info.role === "assistant" && message.parts.some((part) => part.type === "tool"),
+      )
+      expect(toolAssistant).toBeDefined()
+      if (!toolAssistant) return
+      // The reasoning+tool assistant message carries NO text part of its own.
+      expect(toolAssistant.parts.some((part) => part.type === "text")).toBe(false)
+
+      const activities = yield* activityForSession(db, session.id)
+      expect(activities).toHaveLength(1)
+      const activity = activities[0]!
+      const rows = yield* progressRows(db, activity.activity_id)
+      // Settlement only wrote the progress authority: rev 0 (reason+tool) has text_part_id NULL,
+      // rev 1 (closing text) carries the text part.
+      expect(rows).toHaveLength(2)
+      expect(rows[0]).toMatchObject({
+        assistant_message_id: toolAssistant.info.id,
+        revision: 0,
+        state: "progress",
+        text_part_id: null,
+      })
+      expect(rows[1]).toMatchObject({ revision: 1, state: "final" })
+      expect(rows[1]!.text_part_id).not.toBeNull()
+
+      // The marker was never persisted into message JSON ...
+      const stored = yield* db
+        .select({ id: MessageTable.id, data: MessageTable.data })
+        .from(MessageTable)
+        .where(eq(MessageTable.session_id, session.id))
+        .all()
+        .pipe(Effect.orDie)
+      for (const row of stored) expect(row.data).not.toHaveProperty("activityProgress")
+
+      // ... yet hydrate returns the computed projection.
+      const hydrated = yield* MessageV2.get({ sessionID: session.id, messageID: toolAssistant.info.id }).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(markerOf(hydrated.info)).toMatchObject({ activityID: activity.activity_id, revision: 0, state: "progress" })
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #2 — beginProgress committed, provider not dispatched yet: the owning
+// message projects `provisional` immediately (no wait for the first
+// text/reasoning part) and supersedes the activity's older progress revision.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #2: provisional projection appears before provider dispatch without waiting for parts",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "provisional before dispatch", permission: allowAll })
+      const marker = path.join(dir, "bug407008-p2-dispatch.json")
+
+      yield* llm.push(
+        reply()
+          .reason("step one")
+          .tool("bash", { command: "sleep 1; echo step-one", description: "slow tool", workdir: path.resolve(dir) }),
+      )
+      yield* llm.text("second response must never be dispatched")
+      const baselineCalls = yield* llm.calls
+      const running = yield* prompt
+        .prompt({
+          sessionID: session.id,
+          agent: "build",
+          parts: [{ type: "text", text: "two provider requests in one activity" }],
+        })
+        .pipe(Effect.forkChild)
+
+      // Arm P2 only AFTER revision 0 settled to "progress": the second request's beginProgress
+      // happens strictly after the bash tool finishes, so the env flip cannot be missed and the
+      // first request's dispatch already happened.
+      yield* Effect.acquireUseRelease(
+        pollWithTimeout(
+          Effect.gen(function* () {
+            const activities = yield* activityForSession(db, session.id)
+            if (activities.length !== 1) return
+            const rows = yield* progressRows(db, activities[0]!.activity_id)
+            if (rows.length === 1 && rows[0]!.state === "progress") return true
+          }),
+          "timed out waiting for revision 0 to settle to progress",
+        ).pipe(Effect.flatMap(() => Effect.sync(() => setCrashEnv("after_provisional_event_before_provider_dispatch", dir, marker)))),
+        () =>
+          Effect.gen(function* () {
+            yield* waitMarker(marker, "timed out waiting for the second beginProgress crash point")
+            // Exactly ONE provider invocation so far: the second request never dispatched.
+            expect(yield* llm.calls).toBe(baselineCalls + 1)
+
+            const msgs = yield* sessions.messages({ sessionID: session.id })
+            const assistants = msgs.filter((message) => message.info.role === "assistant")
+            expect(assistants).toHaveLength(2)
+            const [first, second] = assistants as [typeof assistants[number], typeof assistants[number]]
+            // The new owning message has no text/reasoning/tool part yet — the projection did NOT
+            // wait for the first part.
+            expect(second.parts.some((part) => ["text", "reasoning", "tool"].includes(part.type))).toBe(false)
+            expect(markerOf(second.info)).toMatchObject({ revision: 1, state: "provisional" })
+            // The older progress revision is superseded: it stays "progress" but is no longer the
+            // activity's latest/effective revision.
+            expect(markerOf(first.info)).toMatchObject({ revision: 0, state: "progress" })
+            const activity = (yield* activityForSession(db, session.id))[0]!
+            expect(markerOf(second.info)?.activityID).toBe(activity.activity_id)
+
+            const rows = yield* progressRows(db, activity.activity_id)
+            expect(rows).toMatchObject([
+              { revision: 0, state: "progress" },
+              { revision: 1, state: "provisional", text_part_id: null },
+            ])
+
+            yield* prompt.cancel(session.id)
+            yield* awaitWithTimeout(Fiber.await(running), "timed out joining the crashed turn", "10 seconds")
+          }),
+        (prev) => Effect.sync(() => restoreCrashEnv(prev)),
+      )
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #3 — P1 crash (after beginProgress commit, before provisional event):
+// hydrate reads provisional, no marker event was published, 0 provider calls.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #3: crash between beginProgress commit and provisional event still hydrates provisional",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "P1 crash", permission: allowAll })
+      const marker = path.join(dir, "bug407008-p1.json")
+      yield* llm.text("must never be dispatched")
+      const baselineCalls = yield* llm.calls
+
+      yield* crashScoped({ dir, point: "after_begin_progress_commit_before_provisional_event", marker },
+        Effect.gen(function* () {
+          const running = yield* prompt
+            .prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "crash at P1" }] })
+            .pipe(Effect.forkChild)
+          yield* waitMarker(marker, "timed out waiting for the P1 crash point")
+
+          // Progress authority committed: provisional row, NULL text_part_id.
+          const activity = (yield* activityForSession(db, session.id))[0]!
+          expect(yield* progressRows(db, activity.activity_id)).toMatchObject([
+            { revision: 0, state: "provisional", text_part_id: null },
+          ])
+
+          // HTTP/hydrate reads the provisional projection straight from the authority.
+          const msgs = yield* sessions.messages({ sessionID: session.id })
+          const assistant = msgs.findLast((message) => message.info.role === "assistant")
+          expect(assistant).toBeDefined()
+          const hydrated = yield* MessageV2.get({ sessionID: session.id, messageID: assistant!.info.id }).pipe(
+            Effect.provideService(Database.Service, database),
+          )
+          expect(markerOf(hydrated.info)).toMatchObject({ revision: 0, state: "provisional" })
+
+          // The provisional message.updated event was NOT published yet.
+          const events = yield* messageUpdatedEvents(db, session.id)
+          expect(markerEventsForMessage(events, assistant!.info.id)).toHaveLength(0)
+
+          // Provider invocation count is still zero.
+          expect(yield* llm.calls).toBe(baselineCalls)
+
+          yield* prompt.cancel(session.id)
+          yield* awaitWithTimeout(Fiber.await(running), "timed out joining the P1-crashed turn", "10 seconds")
+        }),
+      )
+
+      // Cancel terminalized the activity through the regular path; the provisional row was never
+      // mutated by the crash or the cancel.
+      expect((yield* activityForSession(db, session.id))[0]).toMatchObject({ state: "interrupted" })
+      const activity = (yield* activityForSession(db, session.id))[0]!
+      expect(yield* progressRows(db, activity.activity_id)).toMatchObject([{ revision: 0, state: "provisional" }])
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #4 — P2 crash (after provisional event, before dispatch): recovery
+// monotonically upgrades the SAME revision to recovery_required, still 0 calls.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #4: recovery monotonically upgrades the provisional revision after a P2 crash",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "P2 crash", permission: allowAll })
+      const marker = path.join(dir, "bug407008-p2.json")
+      yield* llm.text("must never be dispatched")
+      const baselineCalls = yield* llm.calls
+
+      yield* crashScoped({ dir, point: "after_provisional_event_before_provider_dispatch", marker },
+        Effect.gen(function* () {
+          const running = yield* prompt
+            .prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "crash at P2" }] })
+            .pipe(Effect.forkChild)
+          yield* waitMarker(marker, "timed out waiting for the P2 crash point")
+
+          const msgs = yield* sessions.messages({ sessionID: session.id })
+          const assistant = msgs.findLast((message) => message.info.role === "assistant")!
+          const activity = (yield* activityForSession(db, session.id))[0]!
+
+          // The provisional marker event WAS published before the crash.
+          const eventsBefore = yield* messageUpdatedEvents(db, session.id)
+          const provisional = markerEventsForMessage(eventsBefore, assistant.info.id)
+          expect(provisional).toHaveLength(1)
+          expect((provisional[0]!.data as MessageUpdatedPayload).info?.activityProgress).toMatchObject({
+            revision: 0,
+            state: "provisional",
+          })
+          expect(yield* llm.calls).toBe(baselineCalls)
+
+          // Simulated restart recovery (same authority order as the prompt layer: receipt
+          // transitions happen inside recoverActiveActivities for pre-dispatch receipts).
+          const recovered = yield* SessionPromptIntent.recoverActiveActivities("bug407008-recovery-owner", {
+            includeCurrentOwner: true,
+            sessionID: session.id,
+            source: "same_process_recovery",
+          }).pipe(Effect.provideService(Database.Service, database))
+          expect(recovered).toHaveLength(1)
+          expect(recovered[0]).toMatchObject({ activityID: activity.activity_id, assistantMessageID: assistant.info.id })
+
+          // Same revision, monotonically upgraded provisional -> recovery_required.
+          expect(yield* progressRows(db, activity.activity_id)).toMatchObject([
+            { revision: 0, state: "recovery_required" },
+          ])
+          // The pre-dispatch receipt was terminalized without any provider involvement.
+          const receipt = yield* db
+            .select()
+            .from(SessionToolRequestReceiptTable)
+            .where(eq(SessionToolRequestReceiptTable.assistant_message_id, assistant.info.id))
+            .get()
+            .pipe(Effect.orDie)
+          expect(receipt).toMatchObject({ provider_state: "failed", request_error_code: "pre_dispatch_owner_lost" })
+          expect((yield* activityForSession(db, session.id))[0]).toMatchObject({
+            state: "failed",
+            terminal_reason: "pre_dispatch_owner_lost",
+          })
+          expect(
+            yield* db
+              .select()
+              .from(SessionLegacyActivityTerminalTable)
+              .where(eq(SessionLegacyActivityTerminalTable.activity_id, activity.activity_id))
+              .all()
+              .pipe(Effect.orDie),
+          ).toMatchObject([{ state: "failed", progress_revision: 0, assistant_message_id: assistant.info.id }])
+          expect(yield* llm.calls).toBe(baselineCalls)
+
+          yield* prompt.cancel(session.id)
+          // The parked fiber's terminal replay legitimately diverges from the recovery-committed
+          // terminal (the real process was dead); the exit status is intentionally not asserted.
+          yield* awaitWithTimeout(Fiber.await(running), "timed out joining the P2-crashed turn", "10 seconds")
+        }),
+      )
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #6 — provider-backed interrupted assistant with ZERO parts: the
+// physical terminal authority projects over (replaces) the older progress.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #6: zero-part interrupted assistant projects the terminal state over old progress",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "zero-part terminal", permission: allowAll })
+      const marker = path.join(dir, "bug407008-zero-part.json")
+
+      yield* llm.push(
+        reply()
+          .reason("first request reasoning")
+          .tool("bash", { command: "sleep 1; echo ok", description: "slow tool", workdir: path.resolve(dir) }),
+      )
+      yield* llm.text("never dispatched")
+      const running = yield* prompt
+        .prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "abort mid activity" }] })
+        .pipe(Effect.forkChild)
+
+      yield* Effect.acquireUseRelease(
+        pollWithTimeout(
+          Effect.gen(function* () {
+            const activities = yield* activityForSession(db, session.id)
+            if (activities.length !== 1) return
+            const rows = yield* progressRows(db, activities[0]!.activity_id)
+            if (rows.length === 1 && rows[0]!.state === "progress") return true
+          }),
+          "timed out waiting for revision 0 to settle to progress",
+        ).pipe(Effect.flatMap(() => Effect.sync(() => setCrashEnv("after_provisional_event_before_provider_dispatch", dir, marker)))),
+        () =>
+          Effect.gen(function* () {
+            yield* waitMarker(marker, "timed out waiting for the second beginProgress crash point")
+            // Abort the parked turn: the provider-backed second assistant message has zero parts.
+            yield* prompt.cancel(session.id)
+            yield* awaitWithTimeout(Fiber.await(running), "timed out joining the aborted turn", "10 seconds")
+          }),
+        (prev) => Effect.sync(() => restoreCrashEnv(prev)),
+      )
+
+      const activity = (yield* activityForSession(db, session.id))[0]!
+      expect(activity).toMatchObject({ state: "interrupted", terminal_reason: "user_cancelled" })
+
+      const msgs = yield* sessions.messages({ sessionID: session.id })
+      const assistants = msgs.filter((message) => message.info.role === "assistant")
+      expect(assistants).toHaveLength(2)
+      const [older, terminal] = assistants as [typeof assistants[number], typeof assistants[number]]
+
+      // The interrupted assistant is provider-backed (receipt bound) but produced zero parts.
+      expect(terminal.parts.some((part) => ["text", "reasoning", "tool"].includes(part.type))).toBe(false)
+      expect(
+        yield* db
+          .select({ receiptID: SessionToolRequestReceiptTable.receipt_id })
+          .from(SessionToolRequestReceiptTable)
+          .where(eq(SessionToolRequestReceiptTable.assistant_message_id, terminal.info.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(1)
+
+      // Physical rows were NOT tampered with: rev 0 settled "progress", rev 1 stays provisional.
+      expect(yield* progressRows(db, activity.activity_id)).toMatchObject([
+        { revision: 0, state: "progress" },
+        { revision: 1, state: "provisional" },
+      ])
+      // The terminal authority row was written revisionless: it references NO assistant message
+      // and NO progress revision (the crash happened before the finalizer bound them), so nothing
+      // was fabricated — the read projection derives the terminal state purely from the existing
+      // progress rows + activity state.
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTerminalTable)
+          .where(eq(SessionLegacyActivityTerminalTable.activity_id, activity.activity_id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([
+        { state: "interrupted", source: "cancel", assistant_message_id: null, progress_revision: null },
+      ])
+
+      // The zero-part owning message projects the effective terminal state, replacing the older
+      // progress as the activity's effective marker; the older revision keeps its own state.
+      expect(markerOf(terminal.info)).toMatchObject({
+        revision: 1,
+        state: "interrupted",
+        terminalReason: "user_cancelled",
+      })
+      expect(markerOf(older.info)).toMatchObject({ revision: 0, state: "progress" })
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// shared helper: create a steer-placeholder activity through the legal
+// steer.admit lifecycle while a turn is parked before materialization
+// (same recipe as bug-008). Used by #9 and #17 C/D.
+// ---------------------------------------------------------------------------
+const makeSteerPlaceholder = Effect.fn("test.makeSteerPlaceholder")(function* (
+  sessionID: SessionID,
+  dir: string,
+) {
+  const prompt = yield* SessionPrompt.Service
+  const steer = yield* SessionSteer.Service
+  const marker = path.join(dir, `bug407008-placeholder-${Math.random().toString(36).slice(2)}.json`)
+  return yield* crashScoped(
+    { dir, point: "after_coordinator_reserve", marker },
+    Effect.gen(function* () {
+      const running = yield* prompt
+        .prompt({ sessionID, agent: "build", parts: [{ type: "text", text: "turn dies before materialization" }] })
+        .pipe(Effect.forkChild)
+      yield* waitMarker(marker, "timed out waiting for the coordinator reserve crash point")
+      yield* steer.admit({ sessionID, prompt: new Prompt({ text: "bug-407-008 steer placeholder" }) })
+      yield* prompt.cancel(sessionID)
+      // Exit status intentionally not asserted: the parked turn dies inside the window.
+      yield* awaitWithTimeout(Fiber.await(running), "timed out joining the parked placeholder turn", "10 seconds")
+      const database = yield* Database.Service
+      const placeholder = yield* database.db
+        .select()
+        .from(SessionLegacyActivityTable)
+        .where(eq(SessionLegacyActivityTable.session_id, sessionID))
+        .get()
+        .pipe(Effect.orDie)
+      if (!placeholder || placeholder.state !== "active")
+        return yield* Effect.die("steer placeholder activity was not created")
+      return placeholder.activity_id
+    }),
+  )
+})
+
+// ---------------------------------------------------------------------------
+// §7.1 #7 — latest physical progress row stays "progress" but the Activity is
+// recovery_required: reads derive the effective terminal state; recovery adds
+// NO receipt, message or progress revision.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #7: recovery_required projects over the settled progress row without fabricating authority rows",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "recovery over settled progress", permission: allowAll })
+      const marker = path.join(dir, "bug407008-p7.json")
+
+      yield* llm.push(
+        reply()
+          .reason("settle once then park")
+          .tool("bash", { command: "echo p7", description: "settle tool", workdir: path.resolve(dir) }),
+      )
+      // No second reply queued: after the crash point the loop cannot dispatch anything.
+      const running = yield* crashScoped({ dir, point: "after_progress_settle_before_next_admission", marker },
+        Effect.gen(function* () {
+          const fiber = yield* prompt
+            .prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "settle then crash" }] })
+            .pipe(Effect.forkChild)
+          yield* waitMarker(marker, "timed out waiting for the post-settlement crash point")
+
+          const activity = (yield* activityForSession(db, session.id))[0]!
+          const assistant = (yield* sessions.messages({ sessionID: session.id }))
+            .findLast((message) => message.info.role === "assistant")!
+          // The settled progress row exists and the receipt is terminal ("settled").
+          expect(yield* progressRows(db, activity.activity_id)).toMatchObject([{ revision: 0, state: "progress" }])
+          const receiptsBefore = yield* db
+            .select()
+            .from(SessionToolRequestReceiptTable)
+            .all()
+            .pipe(Effect.orDie)
+          const messagesBefore = yield* db
+            .select({ id: MessageTable.id })
+            .from(MessageTable)
+            .where(eq(MessageTable.session_id, session.id))
+            .all()
+            .pipe(Effect.orDie)
+
+          // Simulated restart recovery: the receipt already terminalized, so recovery only
+          // terminalizes the ACTIVITY; the progress row is left untouched (no-op settle).
+          const recovered = yield* SessionPromptIntent.recoverActiveActivities("bug407008-p7-owner", {
+            includeCurrentOwner: true,
+            sessionID: session.id,
+            source: "same_process_recovery",
+          }).pipe(Effect.provideService(Database.Service, database))
+          expect(recovered).toHaveLength(1)
+          expect(recovered[0]).toMatchObject({ activityID: activity.activity_id, assistantMessageID: assistant.info.id })
+
+          // Authority bookkeeping: nothing new was fabricated.
+          expect(yield* progressRows(db, activity.activity_id)).toMatchObject([{ revision: 0, state: "progress" }])
+          expect((yield* db.select().from(SessionToolRequestReceiptTable).all().pipe(Effect.orDie)).length).toBe(
+            receiptsBefore.length,
+          )
+          expect(
+            (
+              yield* db
+                .select({ id: MessageTable.id })
+                .from(MessageTable)
+                .where(eq(MessageTable.session_id, session.id))
+                .all()
+                .pipe(Effect.orDie)
+            ).length,
+          ).toBe(messagesBefore.length)
+
+          expect((yield* activityForSession(db, session.id))[0]).toMatchObject({
+            state: "recovery_required",
+            terminal_reason: "host_terminal_decision_missing",
+          })
+          expect(
+            yield* db
+              .select()
+              .from(SessionLegacyActivityTerminalTable)
+              .where(eq(SessionLegacyActivityTerminalTable.activity_id, activity.activity_id))
+              .all()
+              .pipe(Effect.orDie),
+          ).toMatchObject([{ state: "recovery_required", progress_revision: 0 }])
+
+          // The canonical marker event is published exactly once by the dedicated publisher,
+          // re-deriving the effective state from the untouched progress row.
+          const before = markerEventsForMessage(yield* messageUpdatedEvents(db, session.id), assistant.info.id).length
+          yield* sessions.publishMessageProjection({ sessionID: session.id, messageID: assistant.info.id })
+          const projected = markerEventsForMessage(yield* messageUpdatedEvents(db, session.id), assistant.info.id)
+          expect(projected.length).toBe(before + 1)
+          expect((projected.at(-1)!.data as MessageUpdatedPayload).info?.activityProgress).toMatchObject({
+            revision: 0,
+            state: "recovery_required",
+            terminalReason: "host_terminal_decision_missing",
+          })
+          // The read projection agrees with the event.
+          expect(
+            markerOf((yield* sessions.getMessage({ sessionID: session.id, messageID: assistant.info.id })).info),
+          ).toMatchObject({ revision: 0, state: "recovery_required" })
+
+          yield* prompt.cancel(session.id)
+          // The parked fiber's terminal replay legitimately diverges from the recovery-committed
+          // terminal (the real process was dead); the exit status is intentionally not asserted.
+          yield* awaitWithTimeout(Fiber.await(fiber), "timed out joining the crashed turn", "10 seconds")
+        }),
+      )
+      void running
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #8 — Abort after a settled progress, before the next admission: the
+// terminal authority reuses the OLD row's revision and the Activity terminal
+// state; the physical progress row is never tampered with.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #8: abort after settlement terminalizes with the old revision without touching the progress row",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "abort after settlement", permission: allowAll })
+      const marker = path.join(dir, "bug407008-p8.json")
+
+      yield* llm.push(
+        reply()
+          .reason("settle then wait for abort")
+          .tool("bash", { command: "echo p8", description: "settle tool", workdir: path.resolve(dir) }),
+      )
+      yield* crashScoped({ dir, point: "after_progress_settle_before_next_admission", marker },
+        Effect.gen(function* () {
+          const running = yield* prompt
+            .prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "settle then abort" }] })
+            .pipe(Effect.forkChild)
+          yield* waitMarker(marker, "timed out waiting for the post-settlement crash point")
+          yield* prompt.cancel(session.id)
+          yield* awaitWithTimeout(Fiber.await(running), "timed out joining the aborted turn", "10 seconds")
+        }),
+      )
+
+      const activity = (yield* activityForSession(db, session.id))[0]!
+      expect(activity).toMatchObject({ state: "interrupted", terminal_reason: "user_cancelled" })
+      // The settled progress row is physically untouched (no rewrite, no extra revision).
+      expect(yield* progressRows(db, activity.activity_id)).toMatchObject([{ revision: 0, state: "progress" }])
+      // The terminal authority references the OLD revision.
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTerminalTable)
+          .where(eq(SessionLegacyActivityTerminalTable.activity_id, activity.activity_id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toMatchObject([{ state: "interrupted", progress_revision: 0 }])
+
+      // Nothing was fabricated: exactly user + assistant messages and one receipt.
+      const msgs = yield* sessions.messages({ sessionID: session.id })
+      expect(msgs.filter((message) => message.info.role === "assistant")).toHaveLength(1)
+      expect(
+        yield* db
+          .select()
+          .from(SessionToolRequestReceiptTable)
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(1)
+
+      // The read projection derives the terminal state from authority only.
+      const assistant = msgs.findLast((message) => message.info.role === "assistant")!
+      expect(markerOf(assistant.info)).toMatchObject({
+        revision: 0,
+        state: "interrupted",
+        terminalReason: "user_cancelled",
+      })
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #9 — Activity terminal BEFORE its first progress admission (steer
+// placeholder): nothing is fabricated — no projection, message or revision.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #9: terminalizing a pre-admission activity fabricates no projection, message or revision",
+  () =>
+    Effect.gen(function* () {
+      const { dir } = yield* useServerConfig(providerCfg)
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "terminal before first admission" })
+
+      const placeholderID = yield* makeSteerPlaceholder(session.id, dir)
+      const eventsBefore = (yield* messageUpdatedEvents(db, session.id)).length
+
+      // Recovery deliberately skips the run_now/pending/no-run placeholder shape ...
+      expect(
+        yield* SessionPromptIntent.recoverActiveActivities("bug407008-p9-owner", {
+          includeCurrentOwner: true,
+          sessionID: session.id,
+          source: "same_process_recovery",
+        }).pipe(Effect.provideService(Database.Service, database)),
+      ).toHaveLength(0)
+
+      // ... so the dedicated retiral caller terminalizes it instead.
+      const retired = yield* SessionPromptIntent.retireDisabledSteerActivity(session.id).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(retired).toMatchObject({ activityID: placeholderID, sessionID: session.id })
+      // No latest progress exists: the DTO carries NO assistant message ID.
+      expect(retired && "assistantMessageID" in retired).toBe(false)
+
+      expect((yield* activityForSession(db, session.id))[0]).toMatchObject({
+        state: "interrupted",
+        terminal_reason: "steering_disabled_before_absorption",
+      })
+      // Nothing was fabricated anywhere.
+      expect(
+        yield* db
+          .select()
+          .from(SessionActivityProgressTable)
+          .where(eq(SessionActivityProgressTable.activity_id, placeholderID))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(0)
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTerminalTable)
+          .where(eq(SessionLegacyActivityTerminalTable.activity_id, placeholderID))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(0)
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityRunTable)
+          .where(eq(SessionLegacyActivityRunTable.session_id, session.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(0)
+      // Only the triggering steer admission exists — no fabricated extra admission.
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityAdmissionTable)
+          .where(eq(SessionLegacyActivityAdmissionTable.activity_id, placeholderID))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(1)
+      expect(
+        (yield* sessions.messages({ sessionID: session.id })).some((message) => message.info.role === "assistant"),
+      ).toBe(false)
+      expect((yield* messageUpdatedEvents(db, session.id)).length).toBe(eventsBefore)
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #10 — generic Session.updateMessage receiving an assistant object with
+// a stale computed marker must strip it before publishing.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #10: updateMessage strips a stale computed activityProgress marker before publishing",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "stale marker strip", permission: allowAll })
+
+      yield* llm.text("settled response")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "settle" }] }),
+        "timed out running the settle turn",
+        "20 seconds",
+      )
+      const assistant = (yield* sessions.messages({ sessionID: session.id })).findLast(
+        (message) => message.info.role === "assistant",
+      )!
+      const hydrated = yield* MessageV2.get({ sessionID: session.id, messageID: assistant.info.id }).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(markerOf(hydrated.info)).toBeDefined()
+
+      // A caller re-submits the assistant object carrying a fabricated/stale marker.
+      const staleInfo = {
+        ...hydrated.info,
+        activityProgress: { activityID: "act_stale_fake", revision: 42, state: "final" } as SessionV1.ActivityProgress,
+      }
+      yield* sessions.updateMessage(staleInfo)
+
+      const events = yield* messageUpdatedEvents(db, session.id)
+      const own = eventsForMessage(events, assistant.info.id)
+      expect(own.length).toBeGreaterThan(0)
+      // The latest published projection carries NO stale computed marker ...
+      expect((own.at(-1)!.data as MessageUpdatedPayload).info?.activityProgress).toBeUndefined()
+      // ... while the earlier canonical marker event remains intact.
+      const markerEvents = markerEventsForMessage(events, assistant.info.id)
+      expect(markerEvents.length).toBeGreaterThan(0)
+      expect((markerEvents.at(-1)!.data as MessageUpdatedPayload).info?.activityProgress).toMatchObject({
+        revision: 0,
+        state: "final",
+      })
+      // NOTE: updateMessage's commit callback persists the caller object verbatim (QUAL-007
+      // upsert); the §7.1 #10 invariant is about the PUBLISHED projection, asserted above. The
+      // read side never trusts stored markers — hydrate derives them from the authority.
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #11 — the core projector consuming the dedicated publisher's
+// computed-marker events persists message JSON without the marker.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #11: projector persists message JSON without the computed marker emitted by the publisher",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "projector strip", permission: allowAll })
+
+      yield* llm.text("marker-bearing projection")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "publish markers" }] }),
+        "timed out running the turn",
+        "20 seconds",
+      )
+
+      // The dedicated publisher DID emit computed-marker events ...
+      const events = yield* messageUpdatedEvents(db, session.id)
+      const withMarker = events.filter((row) => (row.data as MessageUpdatedPayload).info?.activityProgress)
+      expect(withMarker.length).toBeGreaterThan(0)
+
+      // ... yet every persisted message row stays marker-free.
+      const stored = yield* db
+        .select({ id: MessageTable.id, data: MessageTable.data })
+        .from(MessageTable)
+        .where(eq(MessageTable.session_id, session.id))
+        .all()
+        .pipe(Effect.orDie)
+      expect(stored.length).toBeGreaterThan(0)
+      for (const row of stored) expect(row.data).not.toHaveProperty("activityProgress")
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #12 — fork delivery publishing MessageUpdated directly: caller
+// snapshots cannot forge markers; only helper re-derived canonical state
+// propagates (here: nothing, since fork copies no activity authority).
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #12: fork delivery propagates only the stripped canonical projection, never caller markers",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+      const session = yield* sessions.create({ title: "fork marker strip", permission: allowAll })
+
+      yield* llm.text("settled before fork")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "settle before fork" }] }),
+        "timed out running the settle turn",
+        "20 seconds",
+      )
+      const sourceMarker = markerOf(
+        (yield* sessions.messages({ sessionID: session.id })).findLast(
+          (message) => message.info.role === "assistant",
+        )!.info,
+      )
+      expect(sourceMarker).toBeDefined()
+
+      const target = yield* sessions.fork({ sessionID: session.id, intentID: "fork-bug407008-marker-strip" })
+
+      // Every message.updated event published for the target carries no marker ...
+      const targetEvents = yield* messageUpdatedEvents(db, target.id)
+      expect(targetEvents.length).toBeGreaterThan(0)
+      for (const row of targetEvents)
+        expect((row.data as MessageUpdatedPayload).info?.activityProgress).toBeUndefined()
+
+      // ... and the target read paths agree: no fabricated marker survives the fork.
+      const targetPage = yield* sessions.messagesPage({ sessionID: target.id, limit: 100 })
+      expect(targetPage.items.length).toBeGreaterThan(0)
+      for (const item of targetPage.items) expect(markerOf(item.info)).toBeUndefined()
+      for (const item of yield* sessions.messages({ sessionID: target.id }))
+        expect(markerOf(item.info)).toBeUndefined()
+
+      // The source session still projects its canonical marker.
+      expect(
+        markerOf(
+          (yield* sessions.messages({ sessionID: session.id })).findLast(
+            (message) => message.info.role === "assistant",
+          )!.info,
+        ),
+      ).toEqual(sourceMarker)
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #13 — a late plain message update cannot regress the App marker, and
+// subsequent hydrates keep the canonical marker.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #13: late marker-less updates never regress the canonical computed marker",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const session = yield* sessions.create({ title: "late update", permission: allowAll })
+
+      yield* llm.text("settled")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "settle" }] }),
+        "timed out running the settle turn",
+        "20 seconds",
+      )
+      const hydrated = yield* MessageV2.get({
+        sessionID: session.id,
+        messageID: (yield* sessions.messages({ sessionID: session.id })).findLast(
+          (message) => message.info.role === "assistant",
+        )!.info.id,
+      }).pipe(Effect.provideService(Database.Service, database))
+      const canonical = markerOf(hydrated.info)
+      expect(canonical).toMatchObject({ state: "final" })
+      if (hydrated.info.role !== "assistant") return yield* Effect.die("expected an assistant message")
+
+      // A late update arrives WITHOUT any marker (old client snapshot).
+      const { activityProgress: _, ...plain } = hydrated.info
+      void _
+      yield* sessions.updateMessage({ ...plain, time: { ...plain.time, updated: Date.now() } })
+
+      // Single-message reads keep the canonical marker ...
+      expect(
+        markerOf((yield* sessions.getMessage({ sessionID: session.id, messageID: hydrated.info.id })).info),
+      ).toEqual(canonical)
+      expect(
+        markerOf((yield* sessions.getClientMessage({ sessionID: session.id, messageID: hydrated.info.id })).info),
+      ).toEqual(canonical)
+
+      // ... as do page/full reads.
+      const page = yield* sessions.messagesPage({ sessionID: session.id, limit: 100 })
+      expect(markerOf(page.items.find((item) => item.info.id === hydrated.info.id)!.info)).toEqual(canonical)
+      expect(
+        markerOf(
+          (yield* sessions.messages({ sessionID: session.id })).find((item) => item.info.id === hydrated.info.id)!
+            .info,
+        ),
+      ).toEqual(canonical)
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #14 — page batch queries are N+1-free; empty pages, mixed user/assistant
+// pages and cross-activity pages all come back correct.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #14: message pages are batch-hydrated (no N+1) and correct across empty/mixed/cross-activity pages",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+
+      // Empty page on a fresh session.
+      const emptySession = yield* sessions.create({ title: "empty page" })
+      const emptyPage = yield* sessions.messagesPage({ sessionID: emptySession.id, limit: 10 })
+      expect(emptyPage).toMatchObject({ items: [], more: false })
+      expect(emptyPage.cursor).toBeUndefined()
+
+      // Two sequential turns -> two distinct activities: cross-activity page.
+      const session = yield* sessions.create({ title: "cross-activity pages", permission: allowAll })
+      yield* llm.text("activity one answer")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "first turn" }] }),
+        "timed out running turn one",
+        "20 seconds",
+      )
+      yield* llm.text("activity two answer")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "second turn" }] }),
+        "timed out running turn two",
+        "20 seconds",
+      )
+      expect(yield* activityForSession(db, session.id)).toHaveLength(2)
+
+      const full = yield* sessions.messages({ sessionID: session.id })
+      expect(full).toHaveLength(4)
+      // Mixed user/assistant page: every assistant carries its own activity's marker.
+      const assistants = full.filter((message) => message.info.role === "assistant")
+      expect(assistants).toHaveLength(2)
+      const activityIDs = new Set(assistants.map((message) => markerOf(message.info)?.activityID))
+      expect(activityIDs.size).toBe(2)
+      for (const message of assistants) expect(markerOf(message.info)).toMatchObject({ state: "final" })
+
+      // N+1 guard: a full page hydrate touches the progress authority through exactly one
+      // batched query, regardless of how many assistant messages it contains.
+      const dbAny = db as unknown as { session: { prepareQuery: (...args: never[]) => unknown } }
+      const sessionAny = dbAny.session
+      const original = sessionAny.prepareQuery
+      let progressQueryCount = 0
+      sessionAny.prepareQuery = function (this: unknown, query: { sql: string }, ...rest: never[]) {
+        if (query.sql.includes("session_activity_progress")) progressQueryCount += 1
+        return original.apply(this, [query, ...rest] as never[])
+      } as typeof original
+      try {
+        const page = yield* sessions.messagesPage({ sessionID: session.id, limit: 100 })
+        // sessions.messages walks pages newest-first, so the full list is already desc-ordered.
+        expect(page.items.map((item) => item.info.id)).toEqual(full.map((message) => message.info.id))
+        expect(page.more).toBe(false)
+        for (const item of page.items)
+          if (item.info.role === "assistant") expect(markerOf(item.info)).toBeDefined()
+      } finally {
+        sessionAny.prepareQuery = original
+      }
+      expect(progressQueryCount).toBeLessThanOrEqual(1)
+      expect(progressQueryCount).toBeGreaterThanOrEqual(1)
+
+      // Cursor walk with limit 2 reassembles the full history exactly.
+      const walked: string[] = []
+      let cursor: string | undefined
+      do {
+        const page = yield* sessions.messagesPage({ sessionID: session.id, limit: 2, before: cursor })
+        walked.push(...page.items.map((item) => item.info.id))
+        cursor = page.more ? page.cursor : undefined
+      } while (cursor)
+      // The backward walk reassembles the exact same message set (page order is newest-first).
+      expect([...walked].sort()).toEqual([...full.map((message) => message.info.id)].sort())
+    }),
+  { git: true },
+  90_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #15 — MessageV2.get and every single-message/page/full HTTP read return
+// the exact same computed projection.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #15: get and all single-message read paths agree on the computed projection",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const session = yield* sessions.create({ title: "read-path agreement", permission: allowAll })
+
+      yield* llm.push(
+        reply()
+          .reason("tool turn")
+          .tool("bash", { command: "echo agreement", description: "tool", workdir: path.resolve(dir) }),
+      )
+      yield* llm.text("closing answer")
+      yield* awaitWithTimeout(
+        prompt.prompt({ sessionID: session.id, agent: "build", parts: [{ type: "text", text: "agree" }] }),
+        "timed out running the turn",
+        "20 seconds",
+      )
+
+      const msgs = yield* sessions.messages({ sessionID: session.id })
+      const toolAssistant = msgs.find(
+        (message) => message.info.role === "assistant" && message.parts.some((part) => part.type === "tool"),
+      )!
+      const messageID = toolAssistant.info.id
+
+      const viaGet = markerOf(
+        (yield* MessageV2.get({ sessionID: session.id, messageID }).pipe(
+          Effect.provideService(Database.Service, database),
+        )).info,
+      )
+      expect(viaGet).toBeDefined()
+      expect(markerOf((yield* sessions.getMessage({ sessionID: session.id, messageID })).info)).toEqual(viaGet)
+      expect(markerOf((yield* sessions.getClientMessage({ sessionID: session.id, messageID })).info)).toEqual(viaGet)
+      const page = yield* MessageV2.page({ sessionID: session.id, limit: 100 }).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(markerOf(page.items.find((item) => item.info.id === messageID)!.info)).toEqual(viaGet)
+      const clientPage = yield* sessions.messagesPage({ sessionID: session.id, limit: 100 })
+      expect(markerOf(clientPage.items.find((item) => item.info.id === messageID)!.info)).toEqual(viaGet)
+      expect(markerOf(msgs.find((message) => message.info.id === messageID)!.info)).toEqual(viaGet)
+    }),
+  { git: true },
+  60_000,
+)
+
+// ---------------------------------------------------------------------------
+// §7.1 #16 — incident-fixture read-only projection (revision 8/9/10).
+// The incident activity a6d06b2a… (session ses_0149b8…, revisions 0-10, terminal
+// state=interrupted/AbortError) lives in a 1.4.6 production DB COPY. Resolve it via
+// DEEPAGENT_CODE_INCIDENT_DB_PATH or the known snapshot path; SKIP when absent (the 4.8GB
+// production snapshot is never committed). Opened READ-ONLY with NO migration applied, verifying the
+// computed projection + integrity + ownership directly on the production schema.
+// ---------------------------------------------------------------------------
+const INCIDENT_ACTIVITY_ID = "a6d06b2a82ef234ab9dc71e3fd940292a21b34f4732f28aa19ba8416c4c5e5a9"
+const incidentDbPath = () =>
+  process.env.DEEPAGENT_CODE_INCIDENT_DB_PATH ??
+  path.join(os.homedir(), ".deepagent", "code", "deepagent-code-production-snapshot-20260814-162627.db")
+
+test("BUG-407-008 #16: incident DB copy opens read-only without migration and yields revision 8/9/10 projections", () => {
+  const dbPath = incidentDbPath()
+  if (!existsSync(dbPath)) return // no production DB copy here — skip rather than fabricate
+  const db = new BunSQLite(dbPath, { readonly: true })
+  try {
+    // 1. Computed projection (latestRevision ⋈ activity state) derives effective states on the
+    //    production schema WITHOUT any migration applied. rev 8/9 stay `progress`; the terminal
+    //    rev 10 projects `interrupted` from the activity state.
+    const rows = db
+      .query(
+        `SELECT p.revision,
+                p.assistant_message_id,
+                p.state AS progress_state,
+                p.text_part_id AS text_part_id,
+                a.state AS activity_state,
+                CASE WHEN p.revision <> (SELECT max(revision) FROM session_activity_progress WHERE activity_id = p.activity_id)
+                          OR a.state = 'active' THEN p.state
+                     WHEN a.state = 'settled' THEN 'final'
+                     ELSE a.state END AS effective_state
+             FROM session_activity_progress p
+             JOIN session_legacy_activity a ON a.activity_id = p.activity_id
+            WHERE p.activity_id = ?
+         ORDER BY p.revision`,
+      )
+      .all(INCIDENT_ACTIVITY_ID) as Array<{
+      revision: number
+      assistant_message_id: string
+      progress_state: string
+      text_part_id: string | null
+      activity_state: string
+      effective_state: string
+    }>
+    expect(rows.length).toBe(11)
+    const byRevision = new Map(rows.map((row) => [row.revision, row]))
+    expect(byRevision.get(8)?.effective_state).toBe("progress")
+    expect(byRevision.get(9)?.effective_state).toBe("progress")
+    expect(byRevision.get(10)?.effective_state).toBe("interrupted")
+    expect(byRevision.get(10)?.activity_state).toBe("interrupted")
+    // reasoning-only revisions keep text_part_id NULL (projection never fabricates a text part).
+    expect(byRevision.get(8)?.text_part_id).toBeNull()
+    expect(byRevision.get(9)?.text_part_id).toBeNull()
+    // 2. Integrity check passes on the read-only copy (quick_check = the fast integrity scan).
+    const integrity = db.query("PRAGMA quick_check").get() as Record<string, unknown>
+    expect(Object.values(integrity ?? {})[0]).toBe("ok")
+    // 3. Ownership consistency: every progress row's assistant message lives in the activity's session.
+    const ownership = db
+      .query(
+        `SELECT count(*) AS n
+           FROM session_activity_progress p
+           JOIN message m ON m.id = p.assistant_message_id
+           JOIN session_legacy_activity a ON a.activity_id = p.activity_id
+          WHERE p.activity_id = ? AND m.session_id <> a.session_id`,
+      )
+      .get(INCIDENT_ACTIVITY_ID) as { n: number }
+    expect(ownership.n).toBe(0)
+  } finally {
+    db.close()
+  }
+})
+
+// ---------------------------------------------------------------------------
+// §7.1 #17 — per-caller validation: settleProgress terminal / interruptActivity
+// / recoverActiveActivities / retireDisabledSteerActivity return the message ID
+// and publish exactly once when progress exists, and never publish without it.
+// ---------------------------------------------------------------------------
+it.instance(
+  "BUG-407-008 #17: settlement/interrupt/recovery/retiral callers publish once with progress, never without",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const database = yield* Database.Service
+      const { db } = database
+
+      // (A) settleProgress terminal: a healthy turn settles and the terminal marker
+      // is published exactly once for the owning message.
+      const settledSession = yield* sessions.create({ title: "caller: settleProgress", permission: allowAll })
+      yield* llm.text("settled once")
+      yield* awaitWithTimeout(
+        prompt.prompt({
+          sessionID: settledSession.id,
+          agent: "build",
+          parts: [{ type: "text", text: "settle terminal" }],
+        }),
+        "timed out running the settle turn",
+        "20 seconds",
+      )
+      const settledAssistant = (yield* sessions.messages({ sessionID: settledSession.id })).findLast(
+        (message) => message.info.role === "assistant",
+      )!
+      const finals = markerEventsForMessage(
+        yield* messageUpdatedEvents(db, settledSession.id),
+        settledAssistant.info.id,
+      ).filter(
+        (row) => ((row.data as MessageUpdatedPayload).info?.activityProgress?.state ?? "") === "final",
+      )
+      expect(finals).toHaveLength(1)
+
+      // (B) interruptActivity WITH latest progress: returns the owning message ID,
+      // and the dedicated publisher emits exactly one more canonical marker.
+      const interruptSession = yield* sessions.create({ title: "caller: interruptActivity", permission: allowAll })
+      const interruptMarker = path.join(dir, "bug407008-p17-interrupt.json")
+      yield* llm.push(
+        reply()
+          .reason("settle then park")
+          .tool("bash", { command: "echo p17", description: "settle tool", workdir: path.resolve(dir) }),
+      )
+      const parked = yield* crashScoped(
+        { dir, point: "after_progress_settle_before_next_admission", marker: interruptMarker },
+        Effect.gen(function* () {
+          const fiber = yield* prompt
+            .prompt({
+              sessionID: interruptSession.id,
+              agent: "build",
+              parts: [{ type: "text", text: "settle then interrupt" }],
+            })
+            .pipe(Effect.forkChild)
+          yield* waitMarker(interruptMarker, "timed out waiting for the post-settlement crash point")
+
+          const activityID = (yield* activityForSession(db, interruptSession.id))[0]!.activity_id
+          const assistantID = MessageID.make((yield* progressRows(db, activityID))[0]!.assistant_message_id)
+          const before = markerEventsForMessage(
+            yield* messageUpdatedEvents(db, interruptSession.id),
+            assistantID,
+          ).length
+
+          const invalidation = yield* SessionPromptIntent.interruptActivity(activityID).pipe(
+            Effect.provideService(Database.Service, database),
+          )
+          expect(invalidation).toMatchObject({ activityID, assistantMessageID: assistantID })
+
+          yield* sessions.publishMessageProjection({ sessionID: interruptSession.id, messageID: assistantID })
+          const after = markerEventsForMessage(
+            yield* messageUpdatedEvents(db, interruptSession.id),
+            assistantID,
+          )
+          expect(after.length).toBe(before + 1)
+          expect((after.at(-1)!.data as MessageUpdatedPayload).info?.activityProgress).toMatchObject({
+            revision: 0,
+            state: "interrupted",
+            terminalReason: "aborted_before_provider_settlement",
+          })
+
+          // The physical settled row is untouched.
+          expect(yield* progressRows(db, activityID)).toMatchObject([{ revision: 0, state: "progress" }])
+
+          yield* prompt.cancel(interruptSession.id)
+          // Exit status intentionally not asserted (terminal replay divergence, see #4/#7).
+          yield* awaitWithTimeout(Fiber.await(fiber), "timed out joining the parked turn", "10 seconds")
+        }),
+      )
+      void parked
+
+      // (C) retireDisabledSteerActivity WITHOUT progress: no message ID, no publish.
+      const retireSession = yield* sessions.create({ title: "caller: retireDisabledSteerActivity" })
+      const placeholderID = yield* makeSteerPlaceholder(retireSession.id, dir)
+      const retireBefore = (yield* messageUpdatedEvents(db, retireSession.id)).length
+      const retired = yield* SessionPromptIntent.retireDisabledSteerActivity(retireSession.id).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(retired).toMatchObject({ activityID: placeholderID })
+      expect(retired && "assistantMessageID" in retired).toBe(false)
+      expect((yield* messageUpdatedEvents(db, retireSession.id)).length).toBe(retireBefore)
+
+      // (D) interruptActivity WITHOUT progress: no message ID, no publish.
+      const bareSession = yield* sessions.create({ title: "caller: interruptActivity (no progress)" })
+      const barePlaceholderID = yield* makeSteerPlaceholder(bareSession.id, dir)
+      const bareBefore = (yield* messageUpdatedEvents(db, bareSession.id)).length
+      const bare = yield* SessionPromptIntent.interruptActivity(barePlaceholderID).pipe(
+        Effect.provideService(Database.Service, database),
+      )
+      expect(bare).toMatchObject({ activityID: barePlaceholderID })
+      expect(bare && "assistantMessageID" in bare).toBe(false)
+      expect((yield* messageUpdatedEvents(db, bareSession.id)).length).toBe(bareBefore)
+
+      // (E) recoverActiveActivities WITHOUT progress (placeholder shape): skipped by
+      // design, returns [] and publishes nothing.
+      expect(
+        yield* SessionPromptIntent.recoverActiveActivities("bug407008-p17-owner", {
+          includeCurrentOwner: true,
+          sessionID: bareSession.id,
+          source: "same_process_recovery",
+        }).pipe(Effect.provideService(Database.Service, database)),
+      ).toHaveLength(0)
+      expect((yield* messageUpdatedEvents(db, bareSession.id)).length).toBe(bareBefore)
+    }),
+  { git: true },
+  120_000,
+)
diff --git a/packages/deepagent-code/test/session/compacted-fork.test.ts b/packages/deepagent-code/test/session/compacted-fork.test.ts
index 12c5e49b..73001f78 100644
--- a/packages/deepagent-code/test/session/compacted-fork.test.ts
+++ b/packages/deepagent-code/test/session/compacted-fork.test.ts
@@ -15,10 +15,15 @@ import { eq, sql } from "drizzle-orm"
 import { MessageV2 } from "@/session/message-v2"
 import { contextStoreRoot, loadForkOrigin } from "@/session/context-ledger"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { MessageID, PartID, type SessionID } from "@/session/schema"
 import { testEffect } from "../lib/effect"
 
-const it = testEffect(Layer.mergeAll(Session.defaultLayer, Database.defaultLayer))
+// QUAL-007: the core SessionProjector is the canonical V1-event projection path (session/message/part
+// rows); without it the minimal layer never materializes sessions created through events.
+const it = testEffect(
+  Layer.mergeAll(Session.defaultLayer.pipe(Layer.provide(SessionProjector.defaultLayer)), Database.defaultLayer),
+)
 
 const addUser = Effect.fn("CompactedForkTest.addUser")(function* (sessionID: SessionID, text?: string) {
   const sessions = yield* Session.Service
diff --git a/packages/deepagent-code/test/session/compaction.test.ts b/packages/deepagent-code/test/session/compaction.test.ts
index 852eaf91..7af08fba 100644
--- a/packages/deepagent-code/test/session/compaction.test.ts
+++ b/packages/deepagent-code/test/session/compaction.test.ts
@@ -7,6 +7,7 @@ import { PartTable, SessionHistoryStateTable, SessionWorldStateBaselineTable } f
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { APICallError } from "ai"
 import { Cause, Deferred, Effect, Exit, Fiber, Layer, Schema } from "effect"
+import { HttpClientResponse } from "effect/unstable/http"
 import * as Stream from "effect/Stream"
 import { and, eq, inArray } from "drizzle-orm"
 import { Config } from "@/config/config"
@@ -27,6 +28,7 @@ import { SessionStatus } from "../../src/session/status"
 import { SessionSummary } from "../../src/session/summary"
 import { SessionV2 } from "@deepagent-code/core/session"
 import { SessionExecution } from "@deepagent-code/core/session/execution"
+import { Hash } from "@deepagent-code/core/util/hash"
 
 import type { Provider } from "@/provider/provider"
 import * as SessionProcessorModule from "../../src/session/processor"
@@ -37,11 +39,16 @@ import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
 import { TestConfig } from "../fixture/config"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { PromptEpoch } from "@/session/prompt-epoch"
-import { CompactionArtifactTable, CompactionRunTable, CompactionSummaryAttemptTable } from "@/session/compaction-sql"
+import { CompactionArtifactTable, CompactionRunTable, CompactionSummaryAttemptTable, SessionCompactionEncryptedContentTable } from "@/session/compaction-sql"
 import { SessionPromptEpochTable } from "@/session/prompt-epoch.sql"
 import { LLMEvent, Usage } from "@deepagent-code/llm"
+import { RequestExecutor } from "@deepagent-code/llm/route"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
+import { EncryptedContentStore } from "@/session/remote-compact"
 import { ProviderV2 } from "@deepagent-code/core/provider"
 import { ModelV2 } from "@deepagent-code/core/model"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 
 void Log.init({ print: false })
 
@@ -238,6 +245,7 @@ function fake(
     get message() {
       return msg
     },
+    snapshotOutcome: {} satisfies Snapshot.TrackOutcome,
     updateToolCall: Effect.fn("TestSessionProcessor.updateToolCall")(() => Effect.succeed(undefined)),
     completeToolCall: Effect.fn("TestSessionProcessor.completeToolCall")(() => Effect.void),
     process: Effect.fn("TestSessionProcessor.process")(() => Effect.succeed(decision)),
@@ -265,6 +273,19 @@ function cfg(compaction?: ConfigV1.Info["compaction"]) {
   })
 }
 
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Layer it over the tracked
+// history so compaction_run carries the mode columns the drizzle schema
+// already declares. applyOnly is tracked, hence idempotent.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
 const deps = Layer.mergeAll(
   wide().layer,
   layer("continue"),
@@ -273,25 +294,33 @@ const deps = Layer.mergeAll(
   EventV2Bridge.defaultLayer,
   Config.defaultLayer,
   RuntimeFlags.layer({ experimentalEventSystem: true }),
-  Database.defaultLayer,
+  database,
   EventV2Bridge.defaultLayer,
   PromptEpoch.defaultLayer,
 )
 
 const env = Layer.mergeAll(
   SessionNs.defaultLayer,
-  Database.defaultLayer,
+  // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+  // writes hit the session FK.
+  SessionProjector.defaultLayer,
+  database,
   EventV2Bridge.defaultLayer,
   CrossSpawnSpawner.defaultLayer,
   PromptEpoch.defaultLayer,
-  SessionCompaction.layer.pipe(Layer.provide(SessionNs.defaultLayer), Layer.provideMerge(deps)),
+  SessionCompaction.layer.pipe(
+    Layer.provide(SessionNs.defaultLayer),
+    Layer.provide(RequestExecutor.defaultLayer),
+    Layer.provideMerge(deps),
+  ),
 )
 
 const it = testEffect(env)
 
 const compactionEnv = Layer.mergeAll(
   SessionNs.defaultLayer,
-  Database.defaultLayer,
+  SessionProjector.defaultLayer,
+  database,
   EventV2Bridge.defaultLayer,
   CrossSpawnSpawner.defaultLayer,
   PromptEpoch.defaultLayer,
@@ -304,6 +333,8 @@ type CompactionProcessOptions = {
   plugin?: Layer.Layer<Plugin.Service>
   provider?: ReturnType<typeof ProviderTest.fake>
   config?: Layer.Layer<Config.Service>
+  flags?: Partial<RuntimeFlags.Info>
+  executor?: Layer.Layer<RequestExecutor.Service>
 }
 
 function withCompaction(options?: CompactionProcessOptions) {
@@ -317,11 +348,19 @@ function compactionProcessLayer(options?: CompactionProcessOptions) {
     ? SessionProcessorModule.SessionProcessor.layer.pipe(
         Layer.provide(summary),
         Layer.provide(Image.defaultLayer),
-        Layer.provide(RuntimeFlags.layer({ experimentalEventSystem: true })),
+        Layer.provide(RuntimeFlags.layer({ experimentalEventSystem: true, ...options?.flags })),
         Layer.provide(status),
       )
     : layer(options?.result ?? "continue")
-  return Layer.mergeAll(SessionCompaction.layer.pipe(Layer.provide(processor)), processor, events, status).pipe(
+  return Layer.mergeAll(
+    SessionCompaction.layer.pipe(
+      Layer.provide(processor),
+      Layer.provide(options?.executor ?? RequestExecutor.defaultLayer),
+    ),
+    processor,
+    events,
+    status,
+  ).pipe(
     Layer.provide(SessionNs.defaultLayer),
     Layer.provide((options?.provider ?? wide()).layer),
     Layer.provide(Snapshot.defaultLayer),
@@ -332,9 +371,9 @@ function compactionProcessLayer(options?: CompactionProcessOptions) {
     Layer.provide(status),
     Layer.provide(events),
     Layer.provide(options?.config ?? Config.defaultLayer),
-    Layer.provide(RuntimeFlags.layer({ experimentalEventSystem: true })),
+    Layer.provide(RuntimeFlags.layer({ experimentalEventSystem: true, ...options?.flags })),
     Layer.provide(EventV2Bridge.defaultLayer),
-    Layer.provide(Database.defaultLayer),
+    Layer.provide(database),
     Layer.provide(PromptEpoch.defaultLayer),
   )
 }
@@ -891,6 +930,161 @@ describe("session.compaction.prune", () => {
       }),
     ),
   )
+
+  // UPD-005 — seeds a session whose history carries one completed non-protected tool result per
+  // user/assistant turn, followed by two trailing user messages so the prune scan's turns >= 2
+  // gate admits them.
+  const seedToolOutputs = (dir: string, outputs: string[]) =>
+    Effect.gen(function* () {
+      const ssn = yield* SessionNs.Service
+      const info = yield* ssn.create({})
+      const mkUser = () =>
+        ssn.updateMessage({
+          id: MessageID.ascending(),
+          role: "user",
+          sessionID: info.id,
+          agent: "build",
+          model: ref,
+          time: { created: Date.now() },
+        })
+      for (const output of outputs) {
+        const user = yield* mkUser()
+        const assistant: SessionV1.Assistant = {
+          id: MessageID.ascending(),
+          role: "assistant",
+          sessionID: info.id,
+          mode: "build",
+          agent: "build",
+          path: { cwd: dir, root: dir },
+          cost: 0,
+          tokens: { output: 0, input: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+          modelID: ref.modelID,
+          providerID: ref.providerID,
+          parentID: user.id,
+          time: { created: Date.now() },
+          finish: "end_turn",
+        }
+        yield* ssn.updateMessage(assistant)
+        yield* ssn.updatePart({
+          id: PartID.ascending(),
+          messageID: assistant.id,
+          sessionID: info.id,
+          type: "tool",
+          callID: crypto.randomUUID(),
+          tool: "bash",
+          state: {
+            status: "completed",
+            input: {},
+            output,
+            title: "done",
+            metadata: {},
+            time: { start: Date.now(), end: Date.now() },
+          },
+        })
+      }
+      yield* mkUser()
+      yield* mkUser()
+      return info.id
+    })
+
+  const toolCompactionStamps = (msgs: SessionV1.WithParts[]) =>
+    msgs
+      .flatMap((msg) => msg.parts)
+      .filter((part): part is SessionV1.ToolPart => part.type === "tool")
+      .map((part) => (part.state.status === "completed" ? (part.state.time.compacted ?? null) : null))
+
+  it.live(
+    "protect is parameterized: a smaller protect window truncates more older tool results",
+    provideTmpdirInstance(
+      (dir) =>
+        Effect.gen(function* () {
+          const compact = yield* SessionCompaction.Service
+          const ssn = yield* SessionNs.Service
+          // 3 × 100_000 chars = 25k tokens each (Token.estimate = chars/4). Backwards scan with
+          // the DEFAULT protect (40k) keeps the newest (cumulative 25k ≤ 40k) and truncates the
+          // two older ones; the MICRO protect (10k) keeps none and truncates all three.
+          const output = "x".repeat(100_000)
+
+          const defaultID = yield* seedToolOutputs(dir, [output, output, output])
+          yield* compact.prune({ sessionID: defaultID })
+          const defaultStamps = toolCompactionStamps(yield* ssn.messages({ sessionID: defaultID }))
+          expect(defaultStamps.filter((stamp) => stamp !== null)).toHaveLength(2)
+          expect(defaultStamps).toEqual([expect.any(Number), expect.any(Number), null])
+
+          const microID = yield* seedToolOutputs(dir, [output, output, output])
+          yield* compact.prune({ sessionID: microID, protect: SessionCompaction.MICRO_COMPACT_PROTECT })
+          const microStamps = toolCompactionStamps(yield* ssn.messages({ sessionID: microID }))
+          expect(microStamps.filter((stamp) => stamp !== null)).toHaveLength(3)
+        }),
+      {
+        config: {
+          compaction: { prune: true },
+        },
+      },
+    ),
+  )
+
+  it.live(
+    "repeated prune is idempotent: the time.compacted guard prevents double truncation",
+    provideTmpdirInstance(
+      (dir) =>
+        Effect.gen(function* () {
+          const compact = yield* SessionCompaction.Service
+          const ssn = yield* SessionNs.Service
+          const output = "x".repeat(100_000)
+          const sessionID = yield* seedToolOutputs(dir, [output, output, output])
+
+          yield* compact.prune({ sessionID, protect: SessionCompaction.MICRO_COMPACT_PROTECT })
+          const firstStamps = toolCompactionStamps(yield* ssn.messages({ sessionID }))
+          expect(firstStamps.filter((stamp) => stamp !== null)).toHaveLength(3)
+
+          // Re-trigger with the SAME micro protect (repeated fallback entry) and then with the
+          // DEFAULT protect (hard-phase / turn-end prune): neither may re-truncate — the stamps
+          // must be byte-identical, proving the time.compacted guard short-circuits the scan.
+          yield* compact.prune({ sessionID, protect: SessionCompaction.MICRO_COMPACT_PROTECT })
+          yield* compact.prune({ sessionID })
+          const secondStamps = toolCompactionStamps(yield* ssn.messages({ sessionID }))
+          expect(secondStamps).toEqual(firstStamps)
+        }),
+      {
+        config: {
+          compaction: { prune: true },
+        },
+      },
+    ),
+  )
+
+  it.live(
+    "prune is deterministic: same messages + same protect ⇒ same truncated set",
+    provideTmpdirInstance(
+      (dir) =>
+        Effect.gen(function* () {
+          const compact = yield* SessionCompaction.Service
+          const ssn = yield* SessionNs.Service
+          // Heterogeneous sizes so the truncation set is non-trivial: newest (22.5k) stays under
+          // the 40k protect window, the two older ones (35k + 15k cumulative beyond it) are cut.
+          const outputs = ["a".repeat(60_000), "b".repeat(140_000), "c".repeat(90_000)]
+
+          const firstID = yield* seedToolOutputs(dir, outputs)
+          const secondID = yield* seedToolOutputs(dir, outputs)
+          yield* compact.prune({ sessionID: firstID })
+          yield* compact.prune({ sessionID: secondID })
+
+          const mask = (stamps: (number | null)[]) => stamps.map((stamp) => stamp !== null)
+          const firstMask = mask(toolCompactionStamps(yield* ssn.messages({ sessionID: firstID })))
+          const secondMask = mask(toolCompactionStamps(yield* ssn.messages({ sessionID: secondID })))
+          // The compaction summary-attempt requestHash is computed over the compacted projection;
+          // a divergent truncated set between replays would desync the durable attempt record.
+          expect(firstMask).toEqual(secondMask)
+          expect(firstMask).toEqual([true, true, false])
+        }),
+      {
+        config: {
+          compaction: { prune: true },
+        },
+      },
+    ),
+  )
 })
 
 describe("session.compaction.process", () => {
@@ -2072,9 +2266,11 @@ describe("session.compaction.process", () => {
         expect(captured).toContain("<previous-summary>")
         expect(captured).toContain("summary one")
         expect(captured.match(/summary one/g)?.length).toBe(1)
-        expect(captured).toContain("## Constraints & Preferences")
-        expect(captured).toContain("## Progress")
-      }).pipe(withCompaction({ llm: stub.layer }))
+        // UPD-005: the legacy worldStateReinjection=false path renders the structured nine-section
+        // template (replaces the pre-UPD-005 "## Constraints & Preferences" / "## Progress" markers).
+        expect(captured).toContain("1. Primary Request and Intent")
+        expect(captured).toContain("9. Next Steps")
+      }).pipe(withCompaction({ llm: stub.layer, flags: { worldStateReinjection: false } }))
     },
     { git: true },
   )
@@ -2177,6 +2373,227 @@ describe("session.compaction.process", () => {
       expect(part?.tail_start_id).toBeUndefined()
     }).pipe(withCompaction({ llm: stub.layer, config: cfg({ tail_turns: 2, preserve_recent_tokens: 500 }) }))
   })
+
+  itCompaction.instance(
+    "renders the structured nine-section summary prompt on the legacy path",
+    () => {
+      const stub = llm()
+      let captured = ""
+      stub.push(reply("summary", (input) => (captured = JSON.stringify(input.messages))))
+      return Effect.gen(function* () {
+        const ssn = yield* SessionNs.Service
+        const session = yield* ssn.create({})
+        yield* createUserMessage(session.id, "older context")
+        yield* createSummaryCompaction(session.id)
+
+        const msgs = yield* ssn.messages({ sessionID: session.id })
+        const parent = msgs.at(-1)?.info.id
+        expect(parent).toBeTruthy()
+        yield* SessionCompaction.use.process({ parentID: parent!, messages: msgs, sessionID: session.id, auto: false })
+
+        expect(captured).toContain("1. Primary Request and Intent")
+        expect(captured).toContain("9. Next Steps")
+        expect(captured).toContain("<analysis>")
+        expect(captured).toContain("Respond with TEXT ONLY")
+        // Determinism: the template is a module-level constant, never the legacy free-form markers.
+        expect(SessionCompaction.STRUCTURED_SUMMARY_TEMPLATE).toContain("6. All User Messages")
+        expect(captured).not.toContain("## Goal")
+      }).pipe(withCompaction({ llm: stub.layer, flags: { worldStateReinjection: false } }))
+    },
+    { git: true },
+  )
+
+  itCompaction.instance(
+    "strips the analysis scratchpad before committing the summary",
+    () => {
+      const stub = llm()
+      stub.push(
+        reply(
+          "<analysis>scratch notes that must not survive</analysis>\n\n<summary>\n1. Primary Request and Intent:\n   - fix login\n</summary>",
+        ),
+      )
+      return Effect.gen(function* () {
+        const ssn = yield* SessionNs.Service
+        const session = yield* ssn.create({})
+        yield* createUserMessage(session.id, "older context")
+        yield* createSummaryCompaction(session.id)
+
+        const msgs = yield* ssn.messages({ sessionID: session.id })
+        const parent = msgs.at(-1)?.info.id
+        expect(parent).toBeTruthy()
+        const result = yield* SessionCompaction.use.process({
+          parentID: parent!,
+          messages: msgs,
+          sessionID: session.id,
+          auto: false,
+        })
+        expect(result).toBe("continue")
+
+        const summaryMessage = (yield* ssn.messages({ sessionID: session.id })).find(
+          (message) => message.info.role === "assistant" && message.info.summary,
+        )
+        const text = summaryMessage?.parts
+          .filter((part): part is SessionV1.TextPart => part.type === "text")
+          .map((part) => part.text)
+          .join("\n")
+        expect(text).toBeDefined()
+        expect(text).not.toContain("<analysis>")
+        expect(text).not.toContain("scratch notes")
+        expect(text).toContain("Summary:")
+        expect(text).toContain("fix login")
+
+        const { db } = yield* Database.Service
+        const run = yield* db
+          .select({ summary: CompactionRunTable.summary_text, state: CompactionRunTable.state })
+          .from(CompactionRunTable)
+          .where(eq(CompactionRunTable.session_id, session.id))
+          .get()
+          .pipe(Effect.orDie)
+        expect(run?.state).toBe("committed")
+        expect(run?.summary).not.toContain("scratch notes")
+        expect(run?.summary).toContain("fix login")
+      }).pipe(withCompaction({ llm: stub.layer }))
+    },
+    { git: true },
+  )
+})
+
+describe("session.compaction.stripSummaryAnalysis", () => {
+  test("strips the analysis scratchpad and unwraps the summary envelope", () => {
+    const out = SessionCompaction.stripSummaryAnalysis(
+      "<analysis>draft thoughts</analysis>\n\n<summary>\n1. Primary Request and Intent:\n   - fix login\n</summary>",
+    )
+    expect(out).not.toContain("draft thoughts")
+    expect(out).not.toContain("<summary>")
+    expect(out.startsWith("Summary:")).toBe(true)
+    expect(out).toContain("1. Primary Request and Intent:")
+  })
+
+  test("strips every analysis block when multiple are present", () => {
+    const out = SessionCompaction.stripSummaryAnalysis(
+      "<analysis>one</analysis>\n<summary>body</summary>\n<analysis>two</analysis>",
+    )
+    expect(out).not.toContain("one")
+    expect(out).not.toContain("two")
+    expect(out).toContain("body")
+  })
+
+  test("returns untagged text byte-for-byte unchanged", () => {
+    const text = "## Goal\n- legacy summary text"
+    expect(SessionCompaction.stripSummaryAnalysis(text)).toBe(text)
+  })
+
+  test("collapses blank lines left behind by stripping", () => {
+    const out = SessionCompaction.stripSummaryAnalysis(
+      "intro\n\n\n<analysis>x</analysis>\n\n\n<summary>kept</summary>",
+    )
+    expect(out).not.toMatch(/\n{3,}/)
+    expect(out).toContain("kept")
+  })
+})
+
+describe("session.compaction.selectPostCompactFileCandidates", () => {
+  const sessionID = SessionID.make("ses_post_compact_candidates")
+
+  const userMessage = (messageID: MessageID): SessionV1.WithParts => ({
+    info: {
+      id: messageID,
+      role: "user",
+      sessionID,
+      agent: "build",
+      model: ref,
+      time: { created: 0 },
+    },
+    parts: [],
+  })
+
+  const readMessage = (
+    messageID: MessageID,
+    reads: readonly { filePath: string; tool?: string; completed?: boolean }[],
+  ): SessionV1.WithParts => ({
+    info: userMessage(messageID).info,
+    parts: reads.map(
+      (read): SessionV1.ToolPart => ({
+        id: PartID.make(`prt_${Hash.sha256(`candidate-test:${messageID}:${read.filePath}`)}`),
+        messageID,
+        sessionID,
+        type: "tool",
+        callID: `call_${read.filePath}`,
+        tool: read.tool ?? "read",
+        state:
+          read.completed === false
+            ? {
+                status: "error",
+                input: { filePath: read.filePath },
+                error: "boom",
+                time: { start: 0, end: 0 },
+              }
+            : {
+                status: "completed",
+                input: { filePath: read.filePath },
+                output: "content",
+                title: "",
+                metadata: {},
+                time: { start: 0, end: 0 },
+              },
+      }),
+    ),
+  })
+
+  test("caps at POST_COMPACT_MAX_FILES_TO_RESTORE with most recent read first", () => {
+    const messages = [
+      readMessage(MessageID.make("msg_c1"), [{ filePath: "/repo/a.ts" }, { filePath: "/repo/b.ts" }]),
+      readMessage(MessageID.make("msg_c2"), [{ filePath: "/repo/c.ts" }, { filePath: "/repo/d.ts" }]),
+      readMessage(MessageID.make("msg_c3"), [
+        { filePath: "/repo/e.ts" },
+        { filePath: "/repo/f.ts" },
+        { filePath: "/repo/g.ts" },
+      ]),
+    ]
+    const candidates = SessionCompaction.selectPostCompactFileCandidates(messages)
+    expect(SessionCompaction.POST_COMPACT_MAX_FILES_TO_RESTORE).toBe(5)
+    expect(candidates.map((candidate) => candidate.filePath)).toEqual([
+      "/repo/g.ts",
+      "/repo/f.ts",
+      "/repo/e.ts",
+      "/repo/d.ts",
+      "/repo/c.ts",
+    ])
+  })
+
+  test("deduplicates by path keeping the most recent read", () => {
+    const messages = [
+      readMessage(MessageID.make("msg_d1"), [{ filePath: "/repo/old.ts" }]),
+      readMessage(MessageID.make("msg_d2"), [{ filePath: "/repo/new.ts" }]),
+      readMessage(MessageID.make("msg_d3"), [{ filePath: "/repo/old.ts" }]),
+    ]
+    const candidates = SessionCompaction.selectPostCompactFileCandidates(messages)
+    expect(candidates.map((candidate) => candidate.filePath)).toEqual(["/repo/old.ts", "/repo/new.ts"])
+    expect(candidates[0]?.messageID).toBe(MessageID.make("msg_d3"))
+  })
+
+  test("skips incomplete reads and non-read tools", () => {
+    const messages = [
+      readMessage(MessageID.make("msg_s1"), [
+        { filePath: "/repo/failed.ts", completed: false },
+        { filePath: "/repo/grep.ts", tool: "grep" },
+        { filePath: "/repo/kept.ts" },
+      ]),
+    ]
+    const candidates = SessionCompaction.selectPostCompactFileCandidates(messages)
+    expect(candidates.map((candidate) => candidate.filePath)).toEqual(["/repo/kept.ts"])
+  })
+
+  test("is a pure function (same input yields same output)", () => {
+    const messages = [
+      readMessage(MessageID.make("msg_p1"), [{ filePath: "/repo/a.ts" }]),
+      userMessage(MessageID.make("msg_p2")),
+    ]
+    expect(SessionCompaction.selectPostCompactFileCandidates(messages)).toEqual(
+      SessionCompaction.selectPostCompactFileCandidates(messages),
+    )
+    expect(SessionCompaction.selectPostCompactFileCandidates([])).toEqual([])
+  })
 })
 
 describe("util.token.estimate", () => {
@@ -2474,3 +2891,153 @@ describe("SessionNs.getUsage", () => {
     expect(result.tokens.cache.write).toBe(300)
   })
 })
+
+// =============================================================================
+// UPD-005 Gap 2 (§4.2/§5): the remote compaction commit path.
+// =============================================================================
+describe("session.compaction.process remote mode (UPD-005 Gap 2)", () => {
+  const remoteModel = ProviderTest.model({
+    id: ModelV2.ID.make("gpt-5-mini"),
+    limit: { context: 100_000, output: 32_000 },
+  })
+  const remoteProvider = ProviderTest.fake({
+    model: remoteModel,
+    info: ProviderTest.info({ options: { apiKey: "test-openai-key" } }, remoteModel),
+  })
+  const remoteRef = {
+    providerID: ProviderV2.ID.make("openai"),
+    modelID: ModelV2.ID.make("gpt-5-mini"),
+  }
+
+  // Mock /responses/compact executor: a direct service stub (no HttpClient in
+  // the loop) answering every request with a compaction item.
+  const compactExecutor = (encryptedContent: string): Layer.Layer<RequestExecutor.Service> =>
+    Layer.succeed(
+      RequestExecutor.Service,
+      RequestExecutor.Service.of({
+        execute: (request) =>
+          Effect.succeed(
+            HttpClientResponse.fromWeb(
+              request,
+              new Response(
+                JSON.stringify({ output: [{ type: "compaction", id: "cmp_1", encrypted_content: encryptedContent }] }),
+                { headers: { "content-type": "application/json" } },
+              ),
+            ),
+          ),
+      }),
+    )
+
+  function createRemoteUserMessage(sessionID: SessionID, text: string) {
+    return Effect.gen(function* () {
+      const ssn = yield* SessionNs.Service
+      const msg = yield* ssn.updateMessage({
+        id: MessageID.ascending(),
+        role: "user",
+        sessionID,
+        agent: "build",
+        model: remoteRef,
+        time: { created: Date.now() },
+      })
+      yield* ssn.updatePart({
+        id: PartID.ascending(),
+        messageID: msg.id,
+        sessionID,
+        type: "text",
+        text,
+      })
+      return msg
+    })
+  }
+
+  itCompaction.instance(
+    "commits remote compaction: mode columns, durable blob, no summary and no marker part",
+    Effect.gen(function* () {
+      const db = (yield* Database.Service).db
+      // The migration is not registered in migration.gen.ts yet (mainline does
+      // that), so apply it explicitly — tracked, hence idempotent.
+      yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistenceMigration])
+      const ssn = yield* SessionNs.Service
+      const session = yield* ssn.create({})
+      const msg = yield* createRemoteUserMessage(session.id, "compact me")
+      const msgs = yield* ssn.messages({ sessionID: session.id })
+
+      const result = yield* SessionCompaction.use.process({
+        parentID: msg.id,
+        messages: msgs,
+        sessionID: session.id,
+        auto: false,
+      }).pipe(withCompaction({ provider: remoteProvider, executor: compactExecutor("enc-remote-commit") }))
+      expect(result).toBe("stop")
+
+      // Run columns (§4.2): committed remote mode, blob pointer, no summary text.
+      const runs = yield* db.select().from(CompactionRunTable).all()
+      expect(runs).toHaveLength(1)
+      const run = runs[0]!
+      expect(run.state).toBe("committed")
+      expect(run.compaction_mode).toBe("remote_compact")
+      expect(run.encrypted_content_session).toBe(session.id)
+      expect(run.summary_text).toBeNull()
+      expect(run.completion_reason).toBe("manual")
+
+      // Store persistence (Gap 1): the blob is durably attributed.
+      const blob = yield* db
+        .select()
+        .from(SessionCompactionEncryptedContentTable)
+        .where(eq(SessionCompactionEncryptedContentTable.session_id, session.id))
+        .get()
+      expect(blob?.encrypted_content).toBe("enc-remote-commit")
+      expect(blob?.provider_id).toBe("openai")
+      expect(blob?.model_id).toBe("gpt-5-mini")
+      expect(blob?.source_run_id).toBe(run.run_id)
+      // A freshly bound store (i.e. after a restart) reads the blob back from the
+      // table — the compaction layer above has already finalized and unbound.
+      EncryptedContentStore.bind(db)
+      expect(EncryptedContentStore.get(session.id)).toBe("enc-remote-commit")
+      EncryptedContentStore.bind(undefined)
+
+      // No TEXT summary, no marker part: remote mode commits invisibly.
+      const after = yield* ssn.messages({ sessionID: session.id })
+      expect(after.some((message) => message.parts.some((part) => part.type === "compaction"))).toBe(false)
+      expect(after.some((message) => message.info.role === "assistant")).toBe(false)
+    }),
+  )
+})
+
+describe("remote compaction information-hole exemption", () => {
+  test("exempts committed remote runs that carry a blob pointer", () => {
+    expect(
+      SessionCompaction.remoteCompactionInformationHoleExempt({
+        compaction_mode: "remote_compact",
+        encrypted_content_session: "ses_remote",
+      }),
+    ).toBe(true)
+  })
+
+  test("keeps every other shape subject to the information-hole check", () => {
+    expect(
+      SessionCompaction.remoteCompactionInformationHoleExempt({
+        compaction_mode: "local_summary",
+        encrypted_content_session: "ses_remote",
+      }),
+    ).toBe(false)
+    expect(
+      SessionCompaction.remoteCompactionInformationHoleExempt({
+        compaction_mode: "remote_compact",
+        encrypted_content_session: null,
+      }),
+    ).toBe(false)
+    expect(
+      SessionCompaction.remoteCompactionInformationHoleExempt({
+        compaction_mode: "remote_compact",
+        encrypted_content_session: "",
+      }),
+    ).toBe(false)
+    expect(
+      SessionCompaction.remoteCompactionInformationHoleExempt({
+        compaction_mode: null,
+        encrypted_content_session: null,
+      }),
+    ).toBe(false)
+  })
+})
diff --git a/packages/deepagent-code/test/session/context-window.test.ts b/packages/deepagent-code/test/session/context-window.test.ts
index 10dee3d2..999aa1a5 100644
--- a/packages/deepagent-code/test/session/context-window.test.ts
+++ b/packages/deepagent-code/test/session/context-window.test.ts
@@ -16,10 +16,13 @@ import { and, eq } from "drizzle-orm"
 import { MessageV2 } from "@/session/message-v2"
 import { SessionPromptEpochTable } from "@/session/prompt-epoch.sql"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { MessageID, PartID, type SessionID } from "@/session/schema"
 import { testEffect } from "../lib/effect"
 
-const it = testEffect(Layer.mergeAll(Session.defaultLayer, Database.defaultLayer))
+// QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+// writes hit the session FK.
+const it = testEffect(Layer.mergeAll(Session.defaultLayer, SessionProjector.defaultLayer, Database.defaultLayer))
 
 const addUser = Effect.fn("ContextWindowTest.addUser")(function* (sessionID: SessionID, text: string) {
   const sessions = yield* Session.Service
diff --git a/packages/deepagent-code/test/session/diff-artifact.test.ts b/packages/deepagent-code/test/session/diff-artifact.test.ts
index 81b8fc90..f427b92e 100644
--- a/packages/deepagent-code/test/session/diff-artifact.test.ts
+++ b/packages/deepagent-code/test/session/diff-artifact.test.ts
@@ -18,7 +18,11 @@ import { MessageV2 } from "@/session/message-v2"
 import { MessageID } from "@/session/schema"
 import { Session } from "@/session/session"
 import { SessionDiffArtifact } from "@/session/diff-artifact"
-import { SessionDiffArtifactFileChunkTable, SessionDiffMigrationReceiptTable } from "@/session/diff-artifact.sql"
+import {
+  SessionDiffArtifactFileChunkTable,
+  SessionDiffArtifactFileTable,
+  SessionDiffMigrationReceiptTable,
+} from "@/session/diff-artifact.sql"
 import { SessionPromptEpochTable } from "@/session/prompt-epoch.sql"
 import { SessionPaths } from "@/server/routes/instance/httpapi/groups/session"
 import { and, asc, eq, sql } from "drizzle-orm"
@@ -632,3 +636,186 @@ describe("Session legacy diff physical migration", () => {
     30_000,
   )
 })
+
+describe("Session runtime diff artifact capture", () => {
+  it.instance(
+    "capture converges a runtime user summary diff onto session_diff_artifact (direct invocation; updateMessage wiring is staged behind DEEPAGENT_CODE_SESSION_DIFF_ARTIFACT_CAPTURE)",
+    () =>
+      Effect.gen(function* () {
+        const sessions = yield* Session.Service
+        const { db } = yield* Database.Service
+        const session = yield* sessions.create({ title: "runtime capture" })
+        const patch = "@@ -1 +1 @@\n-legacy\n+canonical"
+        const info = {
+          id: MessageID.ascending(),
+          sessionID: session.id,
+          role: "user" as const,
+          agent: "build",
+          model: { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("model") },
+          time: { created: Date.now() },
+          summary: {
+            diffs: [{ file: "src/runtime.ts", patch, additions: 1, deletions: 1, status: "modified" as const }],
+          },
+        } as unknown as SessionV1.User
+        const before = HistoryAuthority.hash([{ info, parts: [] }])
+
+        yield* sessions.updateMessage(info)
+
+        // The updateMessage wiring is staged behind DEEPAGENT_CODE_SESSION_DIFF_ARTIFACT_CAPTURE
+        // (default OFF: the bug-407-010 hotfix contract holds until the §14 evidence chain lands),
+        // so invoke capture directly against the committed message.updated event to lock the
+        // converged path itself.
+        const sourceEvent = yield* db
+          .select({ id: EventTable.id })
+          .from(EventTable)
+          .where(and(eq(EventTable.aggregate_id, session.id), sql`${EventTable.type} LIKE 'message.updated.%'`))
+          .orderBy(sql`${EventTable.seq} DESC`)
+          .get()
+          .pipe(Effect.orDie)
+        if (!sourceEvent) return yield* Effect.die(new Error("expected a message.updated event for capture"))
+        yield* SessionDiffArtifact.capture({
+          sessionID: session.id,
+          messageID: info.id,
+          sourceEventID: sourceEvent.id,
+        }).pipe(Effect.orDie)
+
+        const raw = yield* db.get<{ data: string }>(
+          sql`SELECT CAST(data AS TEXT) AS data FROM message WHERE id = ${info.id}`,
+        )
+        expect(raw?.data).not.toContain('"patch"')
+        expect(raw?.data).not.toContain('"diffs"')
+        const stored = yield* MessageV2.get({ sessionID: session.id, messageID: info.id })
+        expect(stored.info.role === "user" ? stored.info.summary?.diffs : undefined).toEqual([])
+        const artifactID = stored.info.role === "user" ? stored.info.summary?.diffArtifact?.id : undefined
+        expect(artifactID).toBeDefined()
+        expect(stored.info.role === "user" ? stored.info.summary?.diffArtifact?.hash : undefined).toBe(
+          Hash.sha256(Buffer.from(JSON.stringify({ diffs: [{ file: "src/runtime.ts", patch, additions: 1, deletions: 1, status: "modified" }] }))),
+        )
+        expect(HistoryAuthority.hash([stored])).toBe(before)
+        const receipt = yield* db
+          .select()
+          .from(SessionDiffMigrationReceiptTable)
+          .where(eq(SessionDiffMigrationReceiptTable.message_id, info.id))
+          .get()
+          .pipe(Effect.orDie)
+        expect(receipt).toMatchObject({
+          state: "committed",
+          artifact_id: artifactID,
+          canonicalizer_version: 2,
+        })
+        expect(receipt?.committed_session_summary_hash).toBe(Hash.sha256("null"))
+        const eventArtifact = yield* db
+          .select()
+          .from(EventArtifactTable)
+          .where(eq(EventArtifactTable.artifact_id, receipt!.artifact_id))
+          .get()
+          .pipe(Effect.orDie)
+        expect(eventArtifact).toMatchObject({
+          kind: "legacy_message_diff",
+          codec_version: 2,
+          aggregate_id: session.id,
+          event_id: receipt!.source_event_id,
+        })
+        const files = yield* db
+          .select()
+          .from(SessionDiffArtifactFileTable)
+          .where(eq(SessionDiffArtifactFileTable.artifact_id, receipt!.artifact_id))
+          .all()
+          .pipe(Effect.orDie)
+        expect(files).toHaveLength(1)
+        expect(files[0]).toMatchObject({
+          path: "src/runtime.ts",
+          additions: 1,
+          deletions: 1,
+          status: "modified",
+          patch_hash: Hash.sha256(Buffer.from(patch)),
+        })
+        const chunks = yield* db
+          .select()
+          .from(SessionDiffArtifactFileChunkTable)
+          .where(eq(SessionDiffArtifactFileChunkTable.artifact_id, receipt!.artifact_id))
+          .orderBy(asc(SessionDiffArtifactFileChunkTable.chunk_index))
+          .all()
+          .pipe(Effect.orDie)
+        expect(Buffer.concat(chunks.map((chunk) => chunk.data)).toString()).toBe(patch)
+        // exact-retry parity: a second capture observes the committed receipt and skips.
+        expect(
+          yield* SessionDiffArtifact.capture({
+            sessionID: session.id,
+            messageID: info.id,
+            sourceEventID: receipt!.source_event_id as EventV2.ID,
+            now: 500,
+          }),
+        ).toEqual({ state: "skipped" })
+        const manifestResponse = yield* request(
+          `${pathFor(SessionPaths.diffArtifactManifest, session.id)}?${new URLSearchParams({
+            messageID: info.id,
+            artifactID: artifactID!,
+          })}`,
+        )
+        expect(manifestResponse.status).toBe(200)
+        const manifest = yield* json<typeof SessionDiffArtifact.Manifest.Type>(manifestResponse)
+        expect(manifest.files).toEqual([
+          expect.objectContaining({ file: "src/runtime.ts", patchBytes: Buffer.byteLength(patch) }),
+        ])
+        const fileResponse = yield* request(
+          `${pathFor(SessionPaths.diffArtifactFile, session.id)}?${new URLSearchParams({
+            messageID: info.id,
+            artifactID: artifactID!,
+            path: "src/runtime.ts",
+          })}`,
+        )
+        expect(fileResponse.status).toBe(200)
+        expect(yield* json<typeof SessionDiffArtifact.File.Type>(fileResponse)).toMatchObject({
+          patch,
+          truncated: false,
+        })
+      }),
+    { git: true },
+    30_000,
+  )
+
+  it.instance(
+    "leaves a runtime message that already carries a diffArtifact descriptor uncaptured",
+    () =>
+      Effect.gen(function* () {
+        const sessions = yield* Session.Service
+        const { db } = yield* Database.Service
+        const session = yield* sessions.create({ title: "runtime captured upstream" })
+        const info = {
+          id: MessageID.ascending(),
+          sessionID: session.id,
+          role: "user" as const,
+          agent: "build",
+          model: { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("model") },
+          time: { created: Date.now() },
+          summary: {
+            diffs: [],
+            diffArtifact: {
+              id: "evtart_upstream_descriptor",
+              hash: Hash.sha256("upstream"),
+              codec: "legacy-message-diff.v2",
+              fileCount: 1,
+              previewFileCount: 1,
+              previewTruncated: false,
+            },
+          },
+        } as unknown as SessionV1.User
+        yield* sessions.updateMessage(info)
+        expect(
+          yield* db
+            .select()
+            .from(SessionDiffMigrationReceiptTable)
+            .where(eq(SessionDiffMigrationReceiptTable.message_id, info.id))
+            .all()
+            .pipe(Effect.orDie),
+        ).toEqual([])
+        const stored = yield* MessageV2.get({ sessionID: session.id, messageID: info.id })
+        expect(stored.info.role === "user" ? stored.info.summary?.diffArtifact?.id : undefined).toBe(
+          "evtart_upstream_descriptor",
+        )
+      }),
+    { git: true },
+    30_000,
+  )
+})
diff --git a/packages/deepagent-code/test/session/facade-activity.test.ts b/packages/deepagent-code/test/session/facade-activity.test.ts
new file mode 100644
index 00000000..040eb21d
--- /dev/null
+++ b/packages/deepagent-code/test/session/facade-activity.test.ts
@@ -0,0 +1,491 @@
+/**
+ * FEAT-011 T3/T6 — FacadeActivity dispatcher tests.
+ *
+ * Covers: budget min-clamping + result bound (pure), goal delegation lifecycle (start/status/
+ * result/control + lazy convergence settle), the partial-unique-index fail-closed admission
+ * fence, delegation-failure settlement (active rows never linger without a runner), task/panel
+ * runner-unavailable honesty (no fabricated control), panel stop + convergence via a fake
+ * background-job surface, and the status list bound.
+ */
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { eq } from "drizzle-orm"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { Database } from "@deepagent-code/core/database/database"
+import { SessionFacadeActivityTable } from "@deepagent-code/core/deepagent/activity-authority.sql"
+import { ProjectV2 } from "@deepagent-code/core/project"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { AbsolutePath } from "@deepagent-code/core/schema"
+import { SessionTable } from "@deepagent-code/core/session/sql"
+import { BackgroundJob } from "@/background/job"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { GoalManager } from "@/session/goal-manager"
+import { SessionID } from "@/session/schema"
+import {
+  applyResultBound,
+  clampFacadeBudget,
+  FACADE_POLICY_LIMITS,
+  FacadeActivity,
+  FacadeActivityConflict,
+  FacadeActivityInvalidInput,
+  FacadeActivityNotFound,
+  FacadeActivityRunnerUnavailable,
+  FacadeActivityUnsupportedControl,
+} from "@/session/facade-activity"
+import { testEffect } from "../lib/effect"
+
+const database = Layer.mergeAll(Database.layerFromPath(":memory:"), CrossSpawnSpawner.defaultLayer)
+const facadeLayer = Layer.effect(FacadeActivity.Service, FacadeActivity.build)
+
+const parentSessionID = SessionID.make("ses_facade_parent")
+const otherSessionID = SessionID.make("ses_facade_other")
+
+// Seed the FK parents (session_facade_activity.parent_session_id references session.id).
+const setup = Effect.gen(function* () {
+  const { db } = yield* Database.Service
+  yield* db
+    .insert(ProjectTable)
+    .values({ id: ProjectV2.ID.global, worktree: AbsolutePath.make("/project"), sandboxes: [] })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  for (const id of [parentSessionID, otherSessionID]) {
+    yield* db
+      .insert(SessionTable)
+      .values({
+        id,
+        project_id: ProjectV2.ID.global,
+        slug: `facade-${id}`,
+        directory: "/project",
+        title: "facade parent",
+        version: "test",
+      })
+      .onConflictDoNothing()
+      .run()
+      .pipe(Effect.orDie)
+  }
+})
+
+const latestRow = (sessionID: SessionID, subkind: "task" | "goal" | "panel") =>
+  Effect.gen(function* () {
+    const { db } = yield* Database.Service
+    return yield* db
+      .select()
+      .from(SessionFacadeActivityTable)
+      .where(eq(SessionFacadeActivityTable.parent_session_id, sessionID))
+      .all()
+      .pipe(
+        Effect.orDie,
+        Effect.map((rows) => rows.filter((row) => row.subkind === subkind).at(-1)),
+      )
+  })
+
+// ── fake GoalManager (records calls; phase is steerable per test) ─────────────────────────────
+
+const goalFakeState: {
+  phase: string
+  started: Array<{ objective?: string; limits?: { maxTicks?: number; maxTokens?: number; maxWallclockMs?: number } }>
+} = { phase: "running", started: [] }
+
+const fakeGoals = {
+  start: (input: { objective?: string; limits?: { maxTicks?: number; maxTokens?: number; maxWallclockMs?: number } }) =>
+    Effect.sync(() => {
+      goalFakeState.started.push(input)
+      return { goalId: "goal_1", planDocId: "plan_1", phase: "running", running: true } as const
+    }),
+  pause: () => Effect.succeed(true),
+  resume: () => Effect.succeed(true),
+  stop: () => Effect.succeed(true),
+  status: () =>
+    Effect.succeed({ goalId: "goal_1", planDocId: "plan_1", phase: goalFakeState.phase, running: goalFakeState.phase === "running" }),
+  startable: () => Effect.succeed({ startable: true, source: "plan" as const }),
+  editPlan: () => Effect.die("unused in facade tests"),
+} as unknown as GoalManager.Interface
+
+const resetGoalFake = () => {
+  goalFakeState.phase = "running"
+  goalFakeState.started = []
+}
+
+// ── fake BackgroundJob (only the surface the panel branch touches) ─────────────────────────────
+
+const panelJobs = new Map<string, { status: string }>()
+
+const fakeBackground = {
+  get: (id: string) => Effect.succeed(panelJobs.has(id) ? ({ id, status: panelJobs.get(id)!.status } as any) : undefined),
+  cancel: (id: string) =>
+    Effect.sync(() => {
+      const job = panelJobs.get(id)
+      if (!job || job.status !== "running") return undefined
+      job.status = "cancelled"
+      return { id, status: "cancelled" } as any
+    }),
+} as unknown as BackgroundJob.Interface
+
+// ── layer variants ─────────────────────────────────────────────────────────────────────────────
+
+const it = testEffect(facadeLayer.pipe(Layer.provideMerge(Layer.mergeAll(database, RuntimeFlags.layer({})))))
+const itGoal = testEffect(
+  facadeLayer.pipe(
+    Layer.provideMerge(Layer.mergeAll(database, RuntimeFlags.layer({}), Layer.succeed(GoalManager.Service, fakeGoals))),
+  ),
+)
+const itPanel = testEffect(
+  facadeLayer.pipe(
+    Layer.provideMerge(
+      Layer.mergeAll(database, RuntimeFlags.layer({}), Layer.succeed(BackgroundJob.Service, fakeBackground)),
+    ),
+  ),
+)
+const itDurable = testEffect(
+  facadeLayer.pipe(
+    Layer.provideMerge(Layer.mergeAll(database, RuntimeFlags.layer({ subagentControlPlane: "durable" }))),
+  ),
+)
+
+describe("facade-activity.budget", () => {
+  it.effect("clamps model limits with min against the policy ceiling", () =>
+    Effect.gen(function* () {
+      // No request ⇒ the ceiling itself (never looser, never invented tighter).
+      expect(clampFacadeBudget()).toEqual(FACADE_POLICY_LIMITS)
+      // Oversized request ⇒ clamped down to the ceiling.
+      expect(
+        clampFacadeBudget({ maxTicks: 999_999, maxTokens: 999_999_999, maxWallclockMs: Number.MAX_SAFE_INTEGER }),
+      ).toEqual(FACADE_POLICY_LIMITS)
+      // Tighter request ⇒ kept verbatim (floor semantics).
+      expect(clampFacadeBudget({ maxTicks: 3, maxTokens: 1000, maxWallclockMs: 5000 })).toEqual({
+        maxTicks: 3,
+        maxTokens: 1000,
+        maxWallclockMs: 5000,
+      })
+      // Invalid fields (0/negative/NaN/non-integral) fall back to the ceiling per field.
+      expect(clampFacadeBudget({ maxTicks: 0, maxTokens: -5, maxWallclockMs: Number.NaN })).toEqual(
+        FACADE_POLICY_LIMITS,
+      )
+      expect(clampFacadeBudget({ maxTicks: 7.9 }).maxTicks).toBe(7)
+    }),
+  )
+
+  it.effect("applyResultBound truncates code-point-safely with a marker", () =>
+    Effect.gen(function* () {
+      expect(applyResultBound("short", 10)).toEqual({ text: "short", truncated: false })
+      const bounded = applyResultBound("a".repeat(50), 10)
+      expect(bounded.truncated).toBe(true)
+      expect(bounded.text.endsWith("…[truncated]")).toBe(true)
+      expect(Array.from(bounded.text.replace("…[truncated]", "")).length).toBe(10)
+      // Never splits a surrogate pair: bound between the two units of one code point.
+      const emoji = "😀".repeat(5) // 5 astral chars = 10 utf16 units
+      const pair = applyResultBound(emoji, 3)
+      expect(pair.truncated).toBe(true)
+      expect(pair.text.startsWith("😀😀😀")).toBe(true)
+    }),
+  )
+})
+
+describe("facade-activity.goal delegation", () => {
+  itGoal.instance("start writes the active row, min-clamps the budget, and returns the goal ref", () =>
+    Effect.gen(function* () {
+      resetGoalFake()
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const started = yield* facade.start({
+        sessionID: parentSessionID,
+        subkind: "goal",
+        objective: "make the widget green",
+        budget: { maxTicks: 999_999, maxTokens: 42 },
+      })
+      expect(started.subkind).toBe("goal")
+      expect(started.ref.goalID).toBe("goal_1")
+      expect(started.budget).toEqual({
+        maxTicks: FACADE_POLICY_LIMITS.maxTicks,
+        maxTokens: 42,
+        maxWallclockMs: FACADE_POLICY_LIMITS.maxWallclockMs,
+      })
+      // The delegated GoalManager.start received the CLAMPED limits (min semantics).
+      expect(goalFakeState.started).toHaveLength(1)
+      expect(goalFakeState.started[0]!.limits).toEqual(started.budget)
+
+      const row = yield* latestRow(parentSessionID, "goal")
+      expect(row?.state).toBe("active")
+      expect(row?.objective_text).toBe("make the widget green")
+      expect(row?.source).toBe("activity_facade")
+    }),
+  )
+
+  itGoal.instance("fail-closed: a second active goal facade for the same session is refused", () =>
+    Effect.gen(function* () {
+      resetGoalFake()
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "first" })
+      const second = yield* facade
+        .start({ sessionID: parentSessionID, subkind: "goal", objective: "second" })
+        .pipe(Effect.flip)
+      expect(second).toBeInstanceOf(FacadeActivityConflict)
+      // A DIFFERENT session is unaffected by the per-session fence.
+      yield* facade.start({ sessionID: otherSessionID, subkind: "goal", objective: "other session" })
+    }),
+  )
+
+  itGoal.instance("status/result stay bounded while active; terminal phase converges via settle", () =>
+    Effect.gen(function* () {
+      resetGoalFake()
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const started = yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "long goal" })
+
+      // While running: status is active with the goal ref; result refuses the terminal projection.
+      const active = yield* facade.status({ sessionID: parentSessionID })
+      expect(active).toHaveLength(1)
+      expect(active[0]!.state).toBe("active")
+      expect(active[0]!.ref.goalID).toBe("goal_1")
+      const pending = yield* facade.result({ sessionID: parentSessionID, subkind: "goal" })
+      expect(pending.terminal).toBe(false)
+      expect(pending.state).toBe("active")
+
+      // control delegates pause/resume/stop to GoalManager.
+      expect((yield* facade.control({ sessionID: parentSessionID, subkind: "goal", action: "pause" })).applied).toBe(true)
+      expect((yield* facade.control({ sessionID: parentSessionID, subkind: "goal", action: "resume" })).applied).toBe(true)
+
+      // steer without a message fails closed (and no steer buffer exists in this graph).
+      const noMessage = yield* facade
+        .control({ sessionID: parentSessionID, subkind: "goal", action: "steer" })
+        .pipe(Effect.flip)
+      expect(noMessage).toBeInstanceOf(FacadeActivityInvalidInput)
+      const steer = yield* facade
+        .control({ sessionID: parentSessionID, subkind: "goal", action: "steer", message: "go left" })
+        .pipe(Effect.flip)
+      expect(steer).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+
+      // The domain reaches a terminal phase → the next touch settles the facade row (authority).
+      goalFakeState.phase = "done"
+      expect((yield* facade.control({ sessionID: parentSessionID, subkind: "goal", action: "stop" })).applied).toBe(true)
+      const settled = yield* facade.status({ sessionID: parentSessionID })
+      expect(settled[0]!.state).toBe("settled")
+      expect(settled[0]!.reason).toBe("goal_done")
+
+      // T6: the result now projects ONLY the terminal view.
+      const projection = yield* facade.result({ sessionID: parentSessionID, subkind: "goal" })
+      expect(projection.terminal).toBe(true)
+      expect(projection.state).toBe("settled")
+      expect(projection.phase).toBe("done")
+      expect(projection.activityID).toBe(started.activityID)
+
+      // A settled facade frees the unique index: a new goal start is admitted again.
+      const restarted = yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "next" })
+      expect(restarted.activityID).not.toBe(started.activityID)
+    }),
+  )
+
+  itGoal.instance("result for a session without a facade activity fails NotFound", () =>
+    Effect.gen(function* () {
+      resetGoalFake()
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.result({ sessionID: otherSessionID, subkind: "task" }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityNotFound)
+      const controlError = yield* facade
+        .control({ sessionID: otherSessionID, subkind: "goal", action: "stop" })
+        .pipe(Effect.flip)
+      expect(controlError).toBeInstanceOf(FacadeActivityNotFound)
+    }),
+  )
+})
+
+describe("facade-activity.runner honesty (no fabricated runners)", () => {
+  it.instance("goal start without GoalManager settles the admitted row as failed (no lingering active)", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "x" }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+      // Delegation failure must settle the freshly-admitted row — an orphan active row would
+      // block the unique index forever.
+      const row = yield* latestRow(parentSessionID, "goal")
+      expect(row?.state).toBe("failed")
+      expect(row?.reason_code?.startsWith("start_failed:")).toBe(true)
+      // …and the failed row must NOT block a retry (fail-closed applies to ACTIVE rows only).
+      const retry = yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "y" }).pipe(Effect.flip)
+      expect(retry).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+    }),
+  )
+
+  it.instance("empty objective is rejected before any row is written", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.start({ sessionID: parentSessionID, subkind: "goal", objective: "   " }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityInvalidInput)
+      expect(yield* latestRow(parentSessionID, "goal")).toBeUndefined()
+    }),
+  )
+
+  it.instance("task start refuses unless the durable control plane is enabled", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.start({ sessionID: parentSessionID, subkind: "task", objective: "x" }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+      expect((error as FacadeActivityRunnerUnavailable).reason).toContain("durable")
+    }),
+  )
+
+  itDurable.instance("task start under durable still refuses without session/agent/provider services", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.start({ sessionID: parentSessionID, subkind: "task", objective: "x" }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+      const row = yield* latestRow(parentSessionID, "task")
+      expect(row?.state).toBe("failed")
+    }),
+  )
+
+  it.instance("panel start refuses without its runner dependencies", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const facade = yield* FacadeActivity.Service
+      const error = yield* facade.start({ sessionID: parentSessionID, subkind: "panel", objective: "x" }).pipe(Effect.flip)
+      expect(error).toBeInstanceOf(FacadeActivityRunnerUnavailable)
+    }),
+  )
+
+  it.instance("task/panel pause+resume are NOT fabricated — only stop is delegated", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      // Seed settled rows so control() finds a latest facade per subkind.
+      const now = Date.now()
+      for (const [index, subkind] of ["task", "panel"].entries()) {
+        yield* db
+          .insert(SessionFacadeActivityTable)
+          .values({
+            activity_id: `job_seed_${subkind}`,
+            subkind: subkind as "task" | "panel",
+            parent_session_id: parentSessionID,
+            objective_text: `seed ${subkind}`,
+            budget_json: clampFacadeBudget(),
+            state: "active",
+            source: "test",
+            created_at: now + index,
+            mutation_epoch: 0,
+          })
+          .run()
+          .pipe(Effect.orDie)
+      }
+      const facade = yield* FacadeActivity.Service
+      for (const subkind of ["task", "panel"] as const) {
+        for (const action of ["pause", "resume", "steer"] as const) {
+          const error = yield* facade.control({ sessionID: parentSessionID, subkind, action }).pipe(Effect.flip)
+          expect(error).toBeInstanceOf(FacadeActivityUnsupportedControl)
+        }
+      }
+    }),
+  )
+})
+
+describe("facade-activity.panel stop + convergence", () => {
+  itPanel.instance("panel stop cancels the job and converges the facade row to interrupted", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      const activityID = "job_panel_test"
+      yield* db
+        .insert(SessionFacadeActivityTable)
+        .values({
+          activity_id: activityID,
+          subkind: "panel",
+          parent_session_id: parentSessionID,
+          objective_text: "which design should we take?",
+          budget_json: clampFacadeBudget(),
+          state: "active",
+          source: "activity_facade",
+          created_at: Date.now(),
+          mutation_epoch: 0,
+        })
+        .run()
+        .pipe(Effect.orDie)
+      panelJobs.set(activityID, { status: "running" })
+
+      const facade = yield* FacadeActivity.Service
+      const outcome = yield* facade.control({ sessionID: parentSessionID, subkind: "panel", action: "stop" })
+      expect(outcome.applied).toBe(true)
+
+      const rows = yield* facade.status({ sessionID: parentSessionID, subkind: "panel" })
+      expect(rows).toHaveLength(1)
+      expect(rows[0]!.state).toBe("interrupted")
+      expect(rows[0]!.reason).toBe("panel_cancelled")
+
+      const projection = yield* facade.result({ sessionID: parentSessionID, subkind: "panel" })
+      expect(projection.terminal).toBe(true)
+      expect(projection.state).toBe("interrupted")
+      panelJobs.clear()
+    }),
+  )
+
+  itPanel.instance("panel stop without a running job reports applied=false but still converges if terminal", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      const activityID = "job_panel_idle"
+      yield* db
+        .insert(SessionFacadeActivityTable)
+        .values({
+          activity_id: activityID,
+          subkind: "panel",
+          parent_session_id: parentSessionID,
+          objective_text: "idle panel",
+          budget_json: clampFacadeBudget(),
+          state: "active",
+          source: "activity_facade",
+          created_at: Date.now(),
+          mutation_epoch: 0,
+        })
+        .run()
+        .pipe(Effect.orDie)
+      // No job registered at all: cancel is a no-op, convergence keeps the row active.
+      panelJobs.clear()
+      const facade = yield* FacadeActivity.Service
+      const outcome = yield* facade.control({ sessionID: parentSessionID, subkind: "panel", action: "stop" })
+      expect(outcome.applied).toBe(false)
+      const rows = yield* facade.status({ sessionID: parentSessionID, subkind: "panel" })
+      expect(rows[0]!.state).toBe("active")
+    }),
+  )
+})
+
+describe("facade-activity.status bound", () => {
+  it.instance("status never returns more than the ceiling and honors the requested limit", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      const now = Date.now()
+      for (let index = 0; index < 25; index++) {
+        yield* db
+          .insert(SessionFacadeActivityTable)
+          .values({
+            activity_id: `job_bound_${index}`,
+            subkind: "goal",
+            parent_session_id: parentSessionID,
+            objective_text: `objective ${index}`,
+            budget_json: clampFacadeBudget(),
+            state: "failed",
+            reason_code: "start_failed:test",
+            source: "test",
+            created_at: now + index,
+            settled_at: now + index,
+            mutation_epoch: 1,
+          })
+          .run()
+          .pipe(Effect.orDie)
+      }
+      const facade = yield* FacadeActivity.Service
+      const capped = yield* facade.status({ sessionID: parentSessionID, limit: 99 })
+      expect(capped).toHaveLength(20)
+      const bounded = yield* facade.status({ sessionID: parentSessionID, limit: 3 })
+      expect(bounded).toHaveLength(3)
+      // Newest first.
+      expect(bounded[0]!.activityID).toBe("job_bound_24")
+    }),
+  )
+})
diff --git a/packages/deepagent-code/test/session/goal-driver.test.ts b/packages/deepagent-code/test/session/goal-driver.test.ts
index d63d6d2b..a330f70c 100644
--- a/packages/deepagent-code/test/session/goal-driver.test.ts
+++ b/packages/deepagent-code/test/session/goal-driver.test.ts
@@ -192,6 +192,34 @@ describe("startGoal + runToCompletion", () => {
     expect(outcome).toBe("needs_human")
   })
 
+  test("BUG-004 lock: budget exhaustion halts the driver (never loops past maxTicks)", async () => {
+    // An executor that never completes the plan and never makes progress: the ONLY thing allowed to
+    // stop the drive is the budget ceiling (maxTicks). stallThreshold is set high so stall cannot fire
+    // first — this pins that the loop's hard budget is what halts the driver, and that it runs at most
+    // maxTicks executor turns (the pre-execution ceiling), never an unbounded continuation.
+    const planDocId = materializePlanDoc({ store, sessionId: SESSION, plan: plan([step("a", "pending")]) })
+    let execCount = 0
+    const deps = controllerDeps({
+      executor: () =>
+        Effect.sync(() => {
+          execCount += 1
+          return { tokensUsed: 10 }
+        }),
+    })
+    const { handle } = await Effect.runPromise(
+      startGoal({
+        deps,
+        planDocId,
+        criteria: [{ kind: "plan_complete" }],
+        limits: { maxTicks: 2, maxTokens: 10_000, maxWallclockMs: 10_000 },
+        stallThreshold: 99,
+      }),
+    )
+    const outcome = await Effect.runPromise(runToCompletion({ deps, handle }))
+    expect(outcome).toBe("needs_human")
+    expect(execCount).toBeLessThanOrEqual(2)
+  })
+
   test("shouldPause suspends without a terminal outcome (resumes on next run)", async () => {
     const planDocId = materializePlanDoc({ store, sessionId: SESSION, plan: plan([step("a", "pending")]) })
     const deps = controllerDeps()
diff --git a/packages/deepagent-code/test/session/goal-tick-consumer.test.ts b/packages/deepagent-code/test/session/goal-tick-consumer.test.ts
index ddf169c0..fbdfc6a9 100644
--- a/packages/deepagent-code/test/session/goal-tick-consumer.test.ts
+++ b/packages/deepagent-code/test/session/goal-tick-consumer.test.ts
@@ -34,7 +34,9 @@ const makeLayer = (opts: {
   return Layer.mergeAll(consumer, busLayer, flagLayer, database)
 }
 
-const seq0Command = (over?: Partial<{ sessionID: string; goalId: string; planDocId: string; seq: number }>) => ({
+const seq0Command = (
+  over?: Partial<{ sessionID: string; goalId: string; planDocId: string; seq: number; workspaceID: string }>,
+) => ({
   sessionID: "s1",
   goalId: "g1",
   planDocId: "plan-1",
@@ -77,6 +79,23 @@ describe("GoalTickConsumer — command identity", () => {
     })
     expect(recoverGoalTickRequest(request, { seq: 3, planVersion: 1, phase: "running" })).toBe("invalid")
   })
+
+  // FEATURE-003-407 residual: the durable event row's workspace_id drives groupsFor's workspace-scoped
+  // routing, so tickCommand must stamp the REAL workspace id there — never the sessionID.
+  test("tickCommand stamps the real workspaceID onto the event row (not the sessionID)", () => {
+    const cmd = GoalTickConsumer.tickCommand({ ...seq0Command(), workspaceID: "wrk_a" })
+    expect(cmd.workspaceID).toBe("wrk_a")
+    expect(cmd.workspaceID).not.toBe(cmd.payload && (cmd.payload as Record<string, unknown>).sessionID)
+    expect(cmd.payload).toMatchObject({ sessionID: "s1", workspaceID: "wrk_a" })
+    expect(cmd.actorID).toBe("s1") // the actor stays the session; only the routing column changes
+  })
+
+  test("tickCommand without a known workspace falls back to the bus global semantics (\"\")", () => {
+    const cmd = GoalTickConsumer.tickCommand(seq0Command())
+    expect(cmd.workspaceID).toBe("")
+    const resumed = GoalTickConsumer.resumeTickCommand(seq0Command())
+    expect(resumed.workspaceID).toBe("")
+  })
 })
 
 describe("GoalTickConsumer — command handling", () => {
@@ -105,6 +124,47 @@ describe("GoalTickConsumer — command handling", () => {
   )
 })
 
+describe("GoalTickConsumer — event row workspace routing (FEATURE-003-407)", () => {
+  const it = testEffect(
+    makeLayer({
+      runTick: () => Effect.succeed({ progress: "continue", nextSeq: 1, nextExpectedPlanVersion: 1 } as StubResult),
+    }),
+  )
+
+  it.effect("publish persists the real workspaceID on the event row and the chain propagates it", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const consumer = yield* GoalTickConsumer.Service
+      const cmd = yield* publishTick(seq0Command({ goalId: "gwrk", workspaceID: "wrk_a" }))
+      // the durable row carries the REAL workspace — pre-fix it was the sessionID.
+      expect(cmd.workspaceID).toBe("wrk_a")
+      yield* consumer.handle(cmd)
+      // the re-emitted successor (seq=1) keeps the same real workspace; the dedup probe returns the
+      // winner row the consumer already persisted, so its workspaceID proves chain propagation.
+      const next = yield* bus.publish(
+        GoalTickConsumer.tickCommand(seq0Command({ goalId: "gwrk", seq: 1, workspaceID: "wrk_a" })),
+      )
+      expect(next.idempotencyKey).toBe("goal:tick:gwrk:1")
+      expect(next.workspaceID).toBe("wrk_a")
+    }),
+  )
+
+  it.effect("a workspace-bound consumer group is owed only its own workspace's tick events", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      // groupsFor routes workspace-bound groups (workspace_id != "") by the event row's workspace_id.
+      yield* bus.registerConsumerGroup("scoped-grp", LMNEvents.GOAL_TICK_REQUESTED, "wrk_a")
+      const scoped = yield* publishTick(seq0Command({ goalId: "gscoped", workspaceID: "wrk_a" }))
+      const global = yield* publishTick(seq0Command({ goalId: "gglobal" })) // legacy command ⇒ "" row
+      expect(scoped.workspaceID).toBe("wrk_a")
+      expect(global.workspaceID).toBe("")
+      const due = yield* bus.dueRetries(2_000)
+      const ours = due.filter((d) => d.subscriptionGroup === "scoped-grp")
+      expect(ours.map((d) => d.eventID)).toEqual([scoped.id])
+    }),
+  )
+})
+
 describe("GoalTickConsumer — terminal stops the chain", () => {
   let calls = 0
   const it = testEffect(
diff --git a/packages/deepagent-code/test/session/incident-regression.test.ts b/packages/deepagent-code/test/session/incident-regression.test.ts
new file mode 100644
index 00000000..c7b9ebce
--- /dev/null
+++ b/packages/deepagent-code/test/session/incident-regression.test.ts
@@ -0,0 +1,1607 @@
+/**
+ * QUAL-002 incident regression suite for the BUG-407 family.
+ *
+ * BUG-407-010 (receipt startup recovery shape): a provider turn that reached
+ * dispatching/streaming before a process crash must be classified
+ * `indeterminate_after_crash` by recoverProviderReceiptsOnStartup, already
+ * settled turns must be untouched, and repeated startup recovery must be
+ * idempotent.
+ *
+ * BUG-407-011 (activity terminal authority shape): rejecting the pending
+ * question request terminalizes the legacy activity (terminal authority row),
+ * and the next prompt in the same session is admitted without being blocked
+ * by recovery_required. The Question service exposes a single `reject`
+ * dismissal path ("The user dismissed this question"); no separate dismiss
+ * API exists, so reject covers the dismissal shape.
+ *
+ * BUG-407-009 (abandoned resolution shape): an indeterminate receipt resolved
+ * as abandoned unblocks the session for newly admitted messages, keeps
+ * forking possible before the crashed turn cutoff, and repeated resolutions
+ * are idempotent.
+ *
+ * Fixtures follow the legal-lifecycle seeding pattern of
+ * provider-receipt-recovery.test.ts / legacy-provider-resolution.test.ts:
+ * authority rows are inserted in their initial non-terminal state and then
+ * advanced through trigger-legal transitions; `// fixture-exempt:` markers
+ * satisfy the QUAL-003 gate for the unavoidable authority inserts.
+ */
+import { describe, expect, test } from "bun:test"
+import { Effect, Fiber, Layer } from "effect"
+import { and, eq, sql } from "drizzle-orm"
+import path from "path"
+import { NodeFileSystem } from "@effect/platform-node"
+import { FetchHttpClient } from "effect/unstable/http"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
+import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
+import {
+  LocationIdentityTable,
+  ProjectScopeIdentityTable,
+  SecurityNamespaceTable,
+} from "@deepagent-code/core/context-federation/sql"
+import { LocationKey, ProjectScopeKey, SecurityNamespaceID } from "@deepagent-code/core/context-federation/reference"
+import {
+  SessionActivityTable,
+  SessionContextSelectionTable,
+  SessionProviderAttemptResolutionTable,
+  SessionProviderAttemptTable,
+  SessionProviderOwnerLeaseTable,
+} from "@deepagent-code/core/context-federation/session-sql"
+import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { DeepAgentReleasedSnapshot } from "@deepagent-code/core/deepagent/released-snapshot"
+import { ProjectV2 } from "@deepagent-code/core/project"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { AbsolutePath } from "@deepagent-code/core/schema"
+import { SessionMessage } from "@deepagent-code/core/session/message"
+import { Prompt } from "@deepagent-code/core/session/prompt"
+import { SessionSchema } from "@deepagent-code/core/session/schema"
+import { SessionHistoryStateTable, SessionInputTable, SessionIntentTable, SessionTable } from "@deepagent-code/core/session/sql"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
+import { SessionV2 } from "@deepagent-code/core/session"
+import { Hash } from "@deepagent-code/core/util/hash"
+import { EffectFlock } from "@deepagent-code/core/util/effect-flock"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { Search } from "@deepagent-code/core/filesystem/search"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import * as Log from "@deepagent-code/core/util/log"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { Agent as AgentSvc } from "../../src/agent/agent"
+import { Auth } from "../../src/auth"
+import { BackgroundJob } from "@/background/job"
+import { Command } from "../../src/command"
+import { Config } from "@/config/config"
+import { LSP } from "@/lsp/lsp"
+import { MCP } from "../../src/mcp"
+import { Permission } from "../../src/permission"
+import { Plugin } from "../../src/plugin"
+import { Provider as ProviderSvc } from "@/provider/provider"
+import { Env } from "../../src/env"
+import { Git } from "../../src/git"
+import { Image } from "../../src/image/image"
+import { Question } from "../../src/question"
+import { Todo } from "../../src/session/todo"
+import { Session } from "@/session/session"
+import { LLM } from "../../src/session/llm"
+import { MessageV2 } from "../../src/session/message-v2"
+import { FSUtil } from "@deepagent-code/core/fs-util"
+import { SessionCompaction } from "../../src/session/compaction"
+import { RequestExecutor } from "@deepagent-code/llm/route"
+import { SessionSummary } from "../../src/session/summary"
+import { Instruction } from "../../src/session/instruction"
+import { SessionProcessor } from "../../src/session/processor"
+import { recoverProviderReceiptsOnStartup, SessionPrompt } from "../../src/session/prompt"
+import { SessionRevert } from "../../src/session/revert"
+import { SessionRunState } from "../../src/session/run-state"
+import { SessionSteer } from "../../src/session/steer"
+import { SessionStatus } from "../../src/session/status"
+import { MessageID, PartID } from "../../src/session/schema"
+import { Skill } from "../../src/skill"
+import { SystemPrompt } from "../../src/session/system"
+import { Snapshot } from "../../src/snapshot"
+import { ToolRegistry } from "@/tool/registry"
+import { DebugService } from "@/debug/service"
+import { RuntimeBase } from "@/runtime/base"
+import { Truncate } from "@/tool/truncate"
+import { Format } from "../../src/format"
+import { Reference } from "../../src/reference/reference"
+import { RepositoryCache } from "../../src/reference/repository-cache"
+import { PromptEpoch } from "@/session/prompt-epoch"
+import { SessionPromptEpochTable } from "@/session/prompt-epoch.sql"
+import { SessionToolRequestReceiptTable } from "@/session/tool-request-receipt.sql"
+import { SessionLegacyProviderResolution } from "@/session/legacy-provider-resolution"
+import { ContextActivationReceipt } from "@/context-federation/activation-receipt"
+import { ContextFederationReadiness } from "../../src/context-federation/readiness"
+import {
+  SessionActivityAdmissionTable,
+  SessionLegacyActivityRunTable,
+  SessionLegacyActivityTable,
+  SessionLegacyActivityTerminalTable,
+} from "@/session/activity-sql"
+import { TestInstance, testInstanceStoreLayer } from "../fixture/fixture"
+import { TestContextFacades } from "../fixture/context-facades"
+import { pollWithTimeout, testEffect } from "../lib/effect"
+import { TestLLMServer } from "../lib/llm-server"
+
+void Log.init({ print: false })
+
+// ---------------------------------------------------------------------------
+// BUG-407-010 shape: receipt startup recovery (crash after dispatch/stream)
+// ---------------------------------------------------------------------------
+
+const crashProjectId = ProjectV2.ID.make("project-incident-recovery")
+const crashSessionId = SessionSchema.ID.make("ses_incident_recovery")
+const crashInputId = SessionMessage.ID.make("msg_incident_recovery")
+const crashActivityId = "activity-incident-recovery"
+const crashSelectionId = "selection-incident-recovery"
+const crashNamespace = SecurityNamespaceID.make("sec_incident_recovery")
+const crashProjectScope = ProjectScopeKey.make("prjctx_incident_recovery")
+const crashLocation = LocationKey.make("loc_incident_recovery")
+const crashBinding = DeepAgentReleasedSnapshot.binding(undefined)
+const crashRecoveryOwner = "incident-recovery-owner"
+
+const crashSessionLayer = Layer.succeed(
+  Session.Service,
+  {
+    messages: () => Effect.succeed([]),
+    updateMessage: () => Effect.die("incident recovery fixture has no assistant message"),
+  } as unknown as Session.Interface,
+)
+
+function crashAttempt(providerTurnSeq: number) {
+  return {
+    attempt_id: `attempt-incident-${providerTurnSeq}`,
+    session_id: crashSessionId,
+    activity_id: crashActivityId,
+    provider_turn_seq: providerTurnSeq,
+    selection_id: crashSelectionId,
+    projection_hash: "projection",
+    request_hash: crashRequestHash(providerTurnSeq),
+    provider_id: "provider-test",
+    owner_token: "stale-owner",
+    state: "prepared" as const,
+    created_at: 100 + providerTurnSeq,
+  }
+}
+
+function crashRequestHash(providerTurnSeq: number) {
+  return Hash.sha256(`incident-request-${providerTurnSeq}`)
+}
+
+function crashPreparedTurnFields(providerTurnSeq: number) {
+  return {
+    final_request_hash: crashRequestHash(providerTurnSeq),
+    provider_request_hash: crashRequestHash(providerTurnSeq),
+    prepared_turn_hash: Hash.sha256(`incident-prepared-${providerTurnSeq}`),
+    system_stable_hash: Hash.sha256(`incident-stable-${providerTurnSeq}`),
+    system_volatile_hash: Hash.sha256(`incident-volatile-${providerTurnSeq}`),
+    wire_request_hash: crashRequestHash(providerTurnSeq),
+    tool_definition_hash: Hash.sha256("[]"),
+    tool_result_reference_ids: [],
+    tool_result_reference_count: 0,
+  }
+}
+
+function crashReceipt(requestOrdinal: number) {
+  return {
+    receipt_id: `receipt-incident-${requestOrdinal}`,
+    request_ordinal: requestOrdinal + 1,
+    session_id: crashSessionId,
+    user_message_id: crashInputId,
+    provider_attempt_id: `attempt-incident-${requestOrdinal}`,
+    context_selection_id: crashSelectionId,
+    context_eligibility: crashContextEligibility,
+    context_readiness: crashContextReadiness,
+    context_activation: crashContextActivation,
+    context_activation_fingerprint: crashContextActivationFingerprint,
+    released_knowledge_security_namespace_id: crashNamespace,
+    released_knowledge_project_scope_key: crashProjectScope,
+    released_knowledge_binding_state: crashBinding.state,
+    released_knowledge_exact_refs: crashBinding.exactRefs,
+    released_knowledge_exact_refs_fingerprint: crashBinding.exactRefsFingerprint,
+    provider_id: "provider-test",
+    model_id: "model-test",
+    registry_tool_ids: [],
+    permission_filtered_tool_ids: [],
+    final_offered_tool_ids: [],
+    call_ids: [],
+    final_request_hash: null,
+    provider_state: "preparing" as const,
+    adapter_prepared_at: null,
+    prompt_epoch: 0,
+    prompt_window_id: "window-incident-recovery",
+    effective_history_hash: "history-incident-recovery",
+    request_input_hash: crashRequestHash(requestOrdinal),
+    dispatching_at: null,
+    streaming_at: null,
+    owner_token: "stale-owner",
+    request_state: "prepared" as const,
+    created_at: 100,
+  }
+}
+
+const crashContextEligibility = ContextFederationRollout.resolveProject(
+  ContextFederationRollout.resolve(
+    {
+      contextFederationShadow: true,
+      locationIndexesV2Shadow: true,
+      contextProjectionV2: true,
+      contextQueryToolsV2: true,
+      coreV2ExecutionOwner: false,
+    },
+    { coreV2ParityVerified: false },
+  ),
+  "project_scope_incident_recovery",
+  { stage: "all", percentage: 100, internalProjectScopeKeys: [], killSwitch: false },
+)
+const crashContextReadiness = {
+  ...ContextFederationRollout.READINESS_READY_STUB,
+  revision: "readiness-incident-recovery",
+  observedAt: 50,
+  expiresAt: Number.MAX_SAFE_INTEGER,
+}
+const crashContextActivation = ContextActivationReceipt.make({
+  readiness: crashContextReadiness,
+  decision: ContextFederationRollout.activate(crashContextEligibility, crashContextReadiness),
+  recordedAt: 100,
+  projectionEnabled: true,
+  toolsEnabled: true,
+  selection: { selectionId: crashSelectionId, projectionHash: "projection" },
+})
+const crashContextActivationFingerprint = ContextActivationReceipt.fingerprint({
+  eligibility: crashContextEligibility,
+  readiness: crashContextReadiness,
+  activation: crashContextActivation,
+})
+
+/**
+ * Seeds a legal lifecycle (preparing -> prepared -> dispatching -> streaming)
+ * for two provider turns: turn 0 crashes while streaming (stale owner lease),
+ * turn 1 settles legally. Only trigger-legal UPDATE transitions are used to
+ * advance state after the initial non-terminal inserts.
+ */
+function seedCrashFixture(db: Database.Interface["db"]) {
+  return Effect.gen(function* () {
+    yield* db.run(sql`
+      INSERT INTO session_provider_owner_lease (
+        owner_token, registered_at, heartbeat_at, lease_expires_at
+      ) VALUES
+        (
+          ${crashRecoveryOwner},
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 60000
+        ),
+        (
+          'stale-owner',
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER),
+          CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 60000
+        )
+    `)
+    yield* db
+      .insert(SecurityNamespaceTable)
+      .values({ id: crashNamespace, kind: "implicit_local", binding_hash: "namespace-binding", created_at: 1 })
+      .run()
+    yield* db
+      .insert(ProjectScopeIdentityTable)
+      .values({
+        security_namespace_id: crashNamespace,
+        project_scope_key: crashProjectScope,
+        project_kind: "registered_root",
+        project_identity_hash: "project-identity",
+        observed_project_id: crashProjectId,
+        created_at: 1,
+      })
+      .run()
+    yield* db
+      .insert(LocationIdentityTable)
+      .values({
+        security_namespace_id: crashNamespace,
+        location_key: crashLocation,
+        project_scope_key: crashProjectScope,
+        canonical_root: "/tmp/incident-recovery",
+        observed_project_id: crashProjectId,
+        created_at: 1,
+      })
+      .run()
+    yield* db
+      .insert(ProjectTable)
+      .values({ id: crashProjectId, worktree: AbsolutePath.make("/tmp/incident-recovery"), sandboxes: [] })
+      .run()
+    yield* db
+      .insert(SessionTable)
+      .values({
+        id: crashSessionId,
+        project_id: crashProjectId,
+        slug: "incident-recovery",
+        directory: "/tmp/incident-recovery",
+        title: "Incident recovery",
+        version: "test",
+      })
+      .run()
+    yield* db
+      .insert(SessionInputTable)
+      .values({
+        id: crashInputId,
+        session_id: crashSessionId,
+        prompt: new Prompt({ text: "dispatch then crash" }),
+        delivery: "steer",
+        admitted_seq: 0,
+        promoted_seq: 0,
+      })
+      .run()
+    yield* db
+      .insert(SessionActivityTable) // fixture-exempt: seeds active activity for BUG-407-010 crash fixture
+      .values({
+        activity_id: crashActivityId,
+        session_id: crashSessionId,
+        ordinal: 0,
+        trigger_input_id: crashInputId,
+        delivery: "steer",
+        state: "active",
+        created_at: 100,
+      })
+      .run()
+    yield* db
+      .insert(SessionContextSelectionTable)
+      .values({
+        selection_id: crashSelectionId,
+        session_id: crashSessionId,
+        activity_id: crashActivityId,
+        revision: 0,
+        trigger_input_id: crashInputId,
+        location_key: crashLocation,
+        security_namespace_id: crashNamespace,
+        project_scope_key: crashProjectScope,
+        query_fingerprint: "query",
+        authorization_fingerprint: "authorization",
+        authorization_epoch: 1,
+        execution_fingerprint: "execution",
+        selected_source_fingerprint: "sources",
+        observed_location_mutation_epoch: 1,
+        next_revalidation_at: 100_000,
+        released_knowledge_binding_state: crashBinding.state,
+        released_knowledge_exact_refs: crashBinding.exactRefs,
+        released_knowledge_exact_refs_fingerprint: crashBinding.exactRefsFingerprint,
+        graph_revisions: "{}",
+        graph_statuses: "[]",
+        selected_refs: "[]",
+        projection: "",
+        projection_hash: "projection",
+        token_count: 0,
+        artifact_write_status: "degraded_unavailable",
+        inline_audit: "{}",
+        created_at: 100,
+      })
+      .run()
+    yield* db
+      .insert(SessionProviderAttemptTable) // fixture-exempt: seeds prepared attempts, advanced via legal transitions below
+      .values([crashAttempt(0), crashAttempt(1)])
+      .run()
+    for (const providerTurnSeq of [0, 1]) {
+      yield* db
+        .update(SessionProviderAttemptTable)
+        .set({
+          prepared_turn_hash: crashPreparedTurnFields(providerTurnSeq).prepared_turn_hash,
+          wire_request_hash: crashPreparedTurnFields(providerTurnSeq).wire_request_hash,
+        })
+        .where(eq(SessionProviderAttemptTable.attempt_id, `attempt-incident-${providerTurnSeq}`))
+        .run()
+    }
+    yield* db
+      .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds preparing receipts, advanced via legal transitions below
+      .values([crashReceipt(0), crashReceipt(1)])
+      .run()
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        released_knowledge_selected_refs: [],
+        released_knowledge_selected_refs_fingerprint: crashBinding.exactRefsFingerprint,
+      })
+      .run()
+    for (const providerTurnSeq of [0, 1]) {
+      // Legal receipt lifecycle: preparing -> prepared.
+      yield* db
+        .update(SessionToolRequestReceiptTable)
+        .set({ provider_state: "prepared", ...crashPreparedTurnFields(providerTurnSeq), adapter_prepared_at: 100 })
+        .where(eq(SessionToolRequestReceiptTable.receipt_id, `receipt-incident-${providerTurnSeq}`))
+        .run()
+      // Legal attempt/receipt lifecycle: prepared -> dispatching -> streaming.
+      yield* db
+        .update(SessionProviderAttemptTable)
+        .set({ state: "dispatching" })
+        .where(eq(SessionProviderAttemptTable.attempt_id, `attempt-incident-${providerTurnSeq}`))
+        .run()
+      yield* db
+        .update(SessionToolRequestReceiptTable)
+        .set({ provider_state: "dispatching", request_state: "dispatched", dispatching_at: 101 })
+        .where(eq(SessionToolRequestReceiptTable.receipt_id, `receipt-incident-${providerTurnSeq}`))
+        .run()
+      yield* db
+        .update(SessionProviderAttemptTable)
+        .set({ state: "streaming", first_event_at: 102 })
+        .where(eq(SessionProviderAttemptTable.attempt_id, `attempt-incident-${providerTurnSeq}`))
+        .run()
+      yield* db
+        .update(SessionToolRequestReceiptTable)
+        .set({ provider_state: "streaming", streaming_at: 102 })
+        .where(eq(SessionToolRequestReceiptTable.receipt_id, `receipt-incident-${providerTurnSeq}`))
+        .run()
+    }
+    // Turn 1 settles legally before the crash: streaming -> settled.
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ state: "settled", settled_at: 110 })
+      .where(eq(SessionProviderAttemptTable.attempt_id, "attempt-incident-1"))
+      .run()
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        provider_state: "settled",
+        terminal_at: 110,
+        response_fingerprint: Hash.sha256("incident-settled-response"),
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt-incident-1"))
+      .run()
+    // Simulate the crash: the owner lease of the in-flight turn is lost.
+    yield* db.run(sql`
+      UPDATE session_provider_owner_lease
+      SET released_at = CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)
+      WHERE owner_token = 'stale-owner'
+    `)
+  })
+}
+
+describe("BUG-407-010 incident regression: provider receipt startup recovery", () => {
+  test("classifies a crashed streaming turn indeterminate_after_crash without touching settled turns", async () => {
+    const database = Database.layerFromPath(":memory:")
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seedCrashFixture(db)
+        const settledAttemptBefore = yield* db
+          .select()
+          .from(SessionProviderAttemptTable)
+          .where(eq(SessionProviderAttemptTable.attempt_id, "attempt-incident-1"))
+          .get()
+        const settledReceiptBefore = yield* db
+          .select()
+          .from(SessionToolRequestReceiptTable)
+          .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt-incident-1"))
+          .get()
+
+        yield* recoverProviderReceiptsOnStartup({ ownerToken: crashRecoveryOwner, now: 1_500 })
+
+        expect(
+          yield* db
+            .select({
+              state: SessionProviderAttemptTable.state,
+              errorCode: SessionProviderAttemptTable.error_code,
+            })
+            .from(SessionProviderAttemptTable)
+            .where(eq(SessionProviderAttemptTable.attempt_id, "attempt-incident-0"))
+            .get(),
+        ).toEqual({ state: "indeterminate_after_crash", errorCode: "process_recovery" })
+        expect(
+          yield* db
+            .select({
+              state: SessionToolRequestReceiptTable.provider_state,
+              terminalAt: SessionToolRequestReceiptTable.terminal_at,
+              errorCode: SessionToolRequestReceiptTable.request_error_code,
+            })
+            .from(SessionToolRequestReceiptTable)
+            .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt-incident-0"))
+            .get(),
+        ).toEqual({
+          state: "indeterminate_after_crash",
+          terminalAt: 1_500,
+          errorCode: "provider_started_outcome_unknown_after_process_restart",
+        })
+        // Settled turn must be untouched by the crash sweep.
+        expect(
+          yield* db
+            .select()
+            .from(SessionProviderAttemptTable)
+            .where(eq(SessionProviderAttemptTable.attempt_id, "attempt-incident-1"))
+            .get(),
+        ).toEqual(settledAttemptBefore)
+        expect(
+          yield* db
+            .select()
+            .from(SessionToolRequestReceiptTable)
+            .where(eq(SessionToolRequestReceiptTable.receipt_id, "receipt-incident-1"))
+            .get(),
+        ).toEqual(settledReceiptBefore)
+        expect(
+          yield* db
+            .select({ state: SessionHistoryStateTable.state })
+            .from(SessionHistoryStateTable)
+            .where(eq(SessionHistoryStateTable.session_id, crashSessionId))
+            .get(),
+        ).toEqual({ state: "recovery_required" })
+      }).pipe(Effect.provide(Layer.merge(database, crashSessionLayer))),
+    )
+  })
+
+  test("repeated startup recovery is idempotent", async () => {
+    const database = Database.layerFromPath(":memory:")
+    await Effect.runPromise(
+      Effect.gen(function* () {
+        const db = (yield* Database.Service).db
+        yield* seedCrashFixture(db)
+        yield* recoverProviderReceiptsOnStartup({ ownerToken: crashRecoveryOwner, now: 1_500 })
+        const attemptsAfterFirst = yield* db
+          .select()
+          .from(SessionProviderAttemptTable)
+          .orderBy(SessionProviderAttemptTable.provider_turn_seq)
+          .all()
+        const receiptsAfterFirst = yield* db
+          .select()
+          .from(SessionToolRequestReceiptTable)
+          .orderBy(SessionToolRequestReceiptTable.request_ordinal)
+          .all()
+        const historyAfterFirst = yield* db.select().from(SessionHistoryStateTable).all()
+
+        // Second restart with a different clock must not mutate any row.
+        yield* recoverProviderReceiptsOnStartup({ ownerToken: crashRecoveryOwner, now: 2_500 })
+
+        expect(
+          yield* db
+            .select()
+            .from(SessionProviderAttemptTable)
+            .orderBy(SessionProviderAttemptTable.provider_turn_seq)
+            .all(),
+        ).toEqual(attemptsAfterFirst)
+        expect(
+          yield* db
+            .select()
+            .from(SessionToolRequestReceiptTable)
+            .orderBy(SessionToolRequestReceiptTable.request_ordinal)
+            .all(),
+        ).toEqual(receiptsAfterFirst)
+        expect(yield* db.select().from(SessionHistoryStateTable).all()).toEqual(historyAfterFirst)
+        const leasesAfterSecond = yield* db
+          .select()
+          .from(SessionProviderOwnerLeaseTable)
+          .orderBy(SessionProviderOwnerLeaseTable.owner_token)
+          .all()
+        yield* recoverProviderReceiptsOnStartup({ ownerToken: crashRecoveryOwner, now: 3_500 })
+        expect(
+          yield* db
+            .select()
+            .from(SessionProviderOwnerLeaseTable)
+            .orderBy(SessionProviderOwnerLeaseTable.owner_token)
+            .all(),
+        ).toEqual(leasesAfterSecond)
+      }).pipe(Effect.provide(Layer.merge(database, crashSessionLayer))),
+    )
+  })
+})
+
+// ---------------------------------------------------------------------------
+// BUG-407-011 shape: question rejection terminalizes the legacy activity and
+// the next prompt admission is not blocked by recovery_required.
+// ---------------------------------------------------------------------------
+
+const summary = Layer.succeed(
+  SessionSummary.Service,
+  SessionSummary.Service.of({
+    summarize: () => Effect.void,
+    diff: () => Effect.succeed([]),
+    computeDiff: () => Effect.succeed([]),
+    computeManifest: () => Effect.succeed(SessionSummary.emptyManifest()),
+  }),
+)
+
+const mcp = Layer.succeed(
+  MCP.Service,
+  MCP.Service.of({
+    status: () => Effect.succeed({}),
+    clients: () => Effect.succeed({}),
+    tools: () => Effect.succeed({}),
+    prompts: () => Effect.succeed({}),
+    resources: () => Effect.succeed({}),
+    add: () => Effect.succeed({ status: { status: "disabled" as const } }),
+    connect: () => Effect.void,
+    disconnect: () => Effect.void,
+    getPrompt: () => Effect.succeed(undefined),
+    readResource: () => Effect.succeed(undefined),
+    startAuth: () => Effect.die("unexpected MCP auth in incident regression tests"),
+    authenticate: () => Effect.die("unexpected MCP auth in incident regression tests"),
+    finishAuth: () => Effect.die("unexpected MCP auth in incident regression tests"),
+    removeAuth: () => Effect.void,
+    supportsOAuth: () => Effect.succeed(false),
+    hasStoredTokens: () => Effect.succeed(false),
+    getAuthStatus: () => Effect.succeed("not_authenticated" as const),
+    catalog: () => Effect.succeed([]),
+    enableCatalogEntry: () => Effect.succeed({ status: {}, name: "x", config: { type: "local", command: [] } }),
+  }),
+)
+
+const lsp = Layer.succeed(
+  LSP.Service,
+  LSP.Service.of({
+    init: () => Effect.void,
+    status: () => Effect.succeed([]),
+    hasClients: () => Effect.succeed(false),
+    touchFile: () => Effect.void,
+    diagnostics: () => Effect.succeed({}),
+    hover: () => Effect.succeed(undefined),
+    definition: () => Effect.succeed([]),
+    references: () => Effect.succeed([]),
+    implementation: () => Effect.succeed([]),
+    documentSymbol: () => Effect.succeed([]),
+    workspaceSymbol: () => Effect.succeed([]),
+    prepareCallHierarchy: () => Effect.succeed([]),
+    incomingCalls: () => Effect.succeed([]),
+    outgoingCalls: () => Effect.succeed([]),
+    typeDefinition: () => Effect.succeed([]),
+    declaration: () => Effect.succeed([]),
+    prepareTypeHierarchy: () => Effect.succeed([]),
+    supertypes: () => Effect.succeed([]),
+    subtypes: () => Effect.succeed([]),
+    inlayHint: () => Effect.succeed([]),
+    codeAction: () => Effect.succeed([]),
+    executeCommand: () => Effect.succeed(null),
+    prepareRename: () => Effect.succeed(null),
+    rename: () => Effect.succeed(null),
+    documentHighlight: () => Effect.succeed([]),
+    foldingRange: () => Effect.succeed([]),
+    selectionRange: () => Effect.succeed([]),
+    completion: () => Effect.succeed(null),
+    signatureHelp: () => Effect.succeed(null),
+    serverCapabilities: () => Effect.succeed(undefined),
+    workspaceDiagnostics: () => Effect.succeed({}),
+  }),
+)
+
+const status = SessionStatus.layer.pipe(Layer.provideMerge(EventV2Bridge.defaultLayer))
+const run = SessionRunState.layer.pipe(Layer.provide(status))
+const infra = Layer.mergeAll(NodeFileSystem.layer, CrossSpawnSpawner.defaultLayer)
+
+// No-op RuntimeBase stub (debug/profile tools are never invoked here).
+const stubRuntimeBaseLayer = Layer.succeed(
+  RuntimeBase.Service,
+  RuntimeBase.Service.of({
+    gate: () => Effect.void,
+    withIsolation: (_input, body) => body(""),
+    checkPrivileges: () => Effect.succeed([]),
+  }),
+)
+
+const debugStubDie = <A>(): Effect.Effect<A, never> =>
+  Effect.die("DebugService stub (not used in incident regression tests)")
+const stubDebugServiceLayer = Layer.succeed(
+  DebugService.Service,
+  DebugService.Service.of({
+    start: debugStubDie,
+    setBreakpoints: debugStubDie,
+    continue: debugStubDie,
+    step: debugStubDie,
+    stackTrace: debugStubDie,
+    scopes: debugStubDie,
+    variables: debugStubDie,
+    evaluate: debugStubDie,
+    terminate: debugStubDie,
+    get: () => Effect.succeed(undefined),
+    list: () => Effect.succeed([]),
+  }),
+)
+
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
+function makeIncidentPromptLayer() {
+  const runtimeFlags = RuntimeFlags.layer({
+    experimentalEventSystem: true,
+    coreV2ExecutionOwner: false,
+  })
+  const deps = Layer.mergeAll(
+    Session.defaultLayer,
+    Snapshot.defaultLayer,
+    LLM.defaultLayer,
+    Env.defaultLayer,
+    AgentSvc.defaultLayer,
+    Command.defaultLayer,
+    Permission.defaultLayer,
+    Plugin.defaultLayer,
+    Config.defaultLayer,
+    Auth.defaultLayer,
+    ProviderSvc.defaultLayer,
+    lsp,
+    mcp,
+    FSUtil.defaultLayer,
+    BackgroundJob.defaultLayer,
+    status,
+    database,
+    EventV2Bridge.defaultLayer,
+    PromptEpoch.defaultLayer,
+  ).pipe(Layer.provideMerge(infra))
+  const question = Question.layer.pipe(Layer.provideMerge(deps))
+  const todo = Todo.layer.pipe(Layer.provideMerge(deps))
+  const registry = ToolRegistry.layer.pipe(
+    Layer.provide(TestContextFacades.layer),
+    Layer.provide(Skill.defaultLayer),
+    Layer.provide(FetchHttpClient.layer),
+    Layer.provide(CrossSpawnSpawner.defaultLayer),
+    Layer.provide(RepositoryCache.defaultLayer),
+    Layer.provide(Git.defaultLayer),
+    Layer.provide(EffectFlock.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(Search.defaultLayer),
+    Layer.provide(Format.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provide(stubDebugServiceLayer),
+    Layer.provide(stubRuntimeBaseLayer),
+    Layer.provideMerge(todo),
+    Layer.provideMerge(question),
+    Layer.provideMerge(deps),
+  )
+  const trunc = Truncate.layer.pipe(Layer.provideMerge(deps))
+  const proc = SessionProcessor.layer.pipe(
+    Layer.provide(summary),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+  )
+  const compact = SessionCompaction.layer.pipe(
+    Layer.provide(runtimeFlags),
+    Layer.provide(RequestExecutor.defaultLayer),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(deps),
+  )
+  const steer = SessionSteer.layer.pipe(Layer.provideMerge(deps))
+  return SessionPrompt.layer.pipe(
+    Layer.provide(SessionV2.defaultLayer),
+    Layer.provide(SessionProviderOwner.layer.pipe(Layer.provide(deps))),
+    Layer.provide(testInstanceStoreLayer),
+    Layer.provide(SessionRevert.defaultLayer),
+    Layer.provide(Image.defaultLayer),
+    Layer.provide(Reference.defaultLayer),
+    Layer.provide(summary),
+    Layer.provideMerge(steer),
+    Layer.provideMerge(run),
+    Layer.provideMerge(compact),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(registry),
+    Layer.provideMerge(trunc),
+    Layer.provide(Instruction.defaultLayer),
+    Layer.provide(SystemPrompt.defaultLayer),
+    Layer.provide(LocationIdentity.layer.pipe(Layer.provide(deps))),
+    Layer.provide(
+      Layer.succeed(
+        ContextFederationReadiness.Service,
+        ContextFederationReadiness.Service.of({
+          snapshot: () => Effect.succeed(ContextFederationRollout.READINESS_READY_STUB),
+        }),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+    Layer.provideMerge(deps),
+    Layer.provide(summary),
+  )
+}
+
+const incidentPrompt = testEffect(Layer.mergeAll(TestLLMServer.layer, makeIncidentPromptLayer()))
+
+const incidentCfg = {
+  provider: {
+    test: {
+      name: "Test",
+      id: "test",
+      env: [],
+      npm: "@ai-sdk/openai-compatible",
+      models: {
+        "test-model": {
+          id: "test-model",
+          name: "Test Model",
+          attachment: false,
+          reasoning: false,
+          temperature: false,
+          tool_call: true,
+          release_date: "2025-01-01",
+          limit: { context: 100000, output: 10000 },
+          cost: { input: 0, output: 0 },
+          options: {},
+        },
+      },
+      options: {
+        apiKey: "test-key",
+        baseURL: "http://localhost:1/v1",
+        maxRetries: 0,
+      },
+    },
+  },
+}
+
+function incidentProviderCfg(url: string) {
+  return {
+    ...incidentCfg,
+    provider: {
+      ...incidentCfg.provider,
+      test: {
+        ...incidentCfg.provider.test,
+        options: { ...incidentCfg.provider.test.options, baseURL: url },
+      },
+    },
+  }
+}
+
+const writeIncidentConfig = Effect.fn("IncidentRegression.writeConfig")(function* (
+  dir: string,
+  config: Record<string, unknown>,
+) {
+  const fs = yield* FSUtil.Service
+  yield* fs.writeWithDirs(
+    path.join(dir, "deepagent-code.json"),
+    JSON.stringify({ $schema: "https://deepagent-code.ai/config.json", ...config }),
+  )
+})
+
+const useIncidentServerConfig = Effect.fn("IncidentRegression.useServerConfig")(
+  function* (config: (url: string) => Record<string, unknown>) {
+    const { directory: dir } = yield* TestInstance
+    const llm = yield* TestLLMServer
+    yield* writeIncidentConfig(dir, config(llm.url))
+    return { dir, llm }
+  },
+)
+
+incidentPrompt.instance(
+  "BUG-407-011: question dismissal terminalizes the activity authority and unblocks the next prompt admission",
+  () =>
+    Effect.gen(function* () {
+      const { llm } = yield* useIncidentServerConfig(incidentProviderCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const question = yield* Question.Service
+      const { db } = yield* Database.Service
+      const chat = yield* sessions.create({
+        title: "BUG-407-011 question dismissal",
+        permission: [{ permission: "*", pattern: "*", action: "allow" }],
+      })
+      yield* llm.tool("question", {
+        questions: [
+          {
+            question: "Continue with this approach?",
+            header: "Continue",
+            options: [{ label: "Yes", description: "Continue" }],
+          },
+        ],
+      })
+      yield* llm.text("post dismissal admission works")
+
+      const first = yield* prompt
+        .prompt({
+          sessionID: chat.id,
+          agent: "build",
+          parts: [{ type: "text", text: "ask before proceeding" }],
+        })
+        .pipe(Effect.forkChild)
+      const request = yield* pollWithTimeout(
+        Effect.gen(function* () {
+          const pending = yield* question.list()
+          return pending.find((item) => item.sessionID === chat.id)
+        }),
+        "timed out waiting for question request",
+      )
+      yield* question.reject(request.id)
+      const firstResult = yield* Fiber.join(first)
+      expect(firstResult.info.role).toBe("assistant")
+
+      // Terminal authority shape: the rejected run must leave terminal rows.
+      expect(yield* db.select().from(SessionLegacyActivityTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "interrupted", terminal_reason: "user_rejected_question" },
+      ])
+      expect(yield* db.select().from(SessionLegacyActivityRunTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "interrupted", terminal_reason: "user_rejected_question" },
+      ])
+      expect(yield* db.select().from(SessionLegacyActivityTerminalTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "interrupted", reason_code: "user_rejected_question", source: "host_stop" },
+      ])
+      // No recovery_required quarantine may linger after a clean dismissal.
+      expect(
+        yield* db
+          .select()
+          .from(SessionHistoryStateTable)
+          .where(
+            and(
+              eq(SessionHistoryStateTable.session_id, chat.id),
+              eq(SessionHistoryStateTable.state, "recovery_required"),
+            ),
+          )
+          .all()
+          .pipe(Effect.orDie),
+      ).toEqual([])
+      expect(
+        yield* db
+          .select()
+          .from(SessionPromptEpochTable)
+          .where(
+            and(
+              eq(SessionPromptEpochTable.session_id, chat.id),
+              eq(SessionPromptEpochTable.authority_state, "recovery_required"),
+            ),
+          )
+          .all()
+          .pipe(Effect.orDie),
+      ).toEqual([])
+
+      // The next prompt in the same session must be admitted and run.
+      const next = yield* prompt.prompt({
+        sessionID: chat.id,
+        agent: "build",
+        parts: [{ type: "text", text: "continue after dismissal" }],
+      })
+      expect(next.parts.some((part) => part.type === "text" && part.text === "post dismissal admission works")).toBeTrue()
+      expect(yield* llm.hits).toHaveLength(2)
+      expect(
+        yield* db
+          .select()
+          .from(SessionActivityAdmissionTable)
+          .where(eq(SessionActivityAdmissionTable.session_id, chat.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(2)
+      expect(yield* db.select().from(SessionLegacyActivityTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "interrupted", terminal_reason: "user_rejected_question" },
+        { state: "settled", terminal_reason: "assistant_completed" },
+      ])
+      expect(yield* db.select().from(SessionLegacyActivityTerminalTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "interrupted", reason_code: "user_rejected_question", source: "host_stop" },
+        { state: "settled", reason_code: "assistant_completed", source: "provider_final" },
+      ])
+    }),
+  15_000,
+)
+
+incidentPrompt.instance(
+  "BUG-407-011 residual: continue_loop_on_deny keeps the run alive after dismissal and still terminalizes the activity",
+  () =>
+    Effect.gen(function* () {
+      const { llm } = yield* useIncidentServerConfig((url) => ({
+        ...incidentProviderCfg(url),
+        experimental: { continue_loop_on_deny: true },
+      }))
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const question = yield* Question.Service
+      const { db } = yield* Database.Service
+      const chat = yield* sessions.create({
+        title: "BUG-407-011 continue_loop_on_deny",
+        permission: [{ permission: "*", pattern: "*", action: "allow" }],
+      })
+      yield* llm.tool("question", {
+        questions: [
+          {
+            question: "Continue with this approach?",
+            header: "Continue",
+            options: [{ label: "Yes", description: "Continue" }],
+          },
+        ],
+      })
+      yield* llm.text("loop continued after deny")
+      yield* llm.text("next prompt admitted after continue-on-deny")
+
+      const first = yield* prompt
+        .prompt({
+          sessionID: chat.id,
+          agent: "build",
+          parts: [{ type: "text", text: "ask before proceeding" }],
+        })
+        .pipe(Effect.forkChild)
+      const request = yield* pollWithTimeout(
+        Effect.gen(function* () {
+          const pending = yield* question.list()
+          return pending.find((item) => item.sessionID === chat.id)
+        }),
+        "timed out waiting for question request",
+      )
+      yield* question.reject(request.id)
+      const firstResult = yield* Fiber.join(first)
+      expect(firstResult.info.role).toBe("assistant")
+      // The loop must NOT stop at the dismissal: the SAME run completes with the continuation text
+      // (the rejection is a tool failure, not a typed stop reason, under continue_loop_on_deny).
+      expect(
+        firstResult.parts.some((part) => part.type === "text" && part.text === "loop continued after deny"),
+      ).toBeTrue()
+      // The rejection surfaced as a tool FAILURE carrying the failureCode, not a turn abort.
+      const msgs = yield* sessions.messages({ sessionID: chat.id })
+      const questionPart = msgs
+        .flatMap((m) => m.parts)
+        .find((p) => p.type === "tool") as
+        | { state: { status: string; metadata?: Record<string, unknown> } }
+        | undefined
+      expect(questionPart?.state.status).toBe("error")
+      expect(questionPart?.state.metadata?.failureCode).toBe("user_rejected_question")
+
+      // The SAME activity terminalizes at run end — settled, never interrupted, never left active.
+      // (The run row uses its own terminal vocabulary: "completed" for a settled outcome.)
+      expect(yield* db.select().from(SessionLegacyActivityTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "settled", terminal_reason: "assistant_completed" },
+      ])
+      expect(yield* db.select().from(SessionLegacyActivityRunTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "completed", terminal_reason: "assistant_completed" },
+      ])
+      expect(yield* db.select().from(SessionLegacyActivityTerminalTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "settled", reason_code: "assistant_completed", source: "provider_final" },
+      ])
+      // No recovery_required quarantine may linger after a continue-on-deny completion.
+      expect(
+        yield* db
+          .select()
+          .from(SessionHistoryStateTable)
+          .where(
+            and(
+              eq(SessionHistoryStateTable.session_id, chat.id),
+              eq(SessionHistoryStateTable.state, "recovery_required"),
+            ),
+          )
+          .all()
+          .pipe(Effect.orDie),
+      ).toEqual([])
+      expect(
+        yield* db
+          .select()
+          .from(SessionPromptEpochTable)
+          .where(
+            and(
+              eq(SessionPromptEpochTable.session_id, chat.id),
+              eq(SessionPromptEpochTable.authority_state, "recovery_required"),
+            ),
+          )
+          .all()
+          .pipe(Effect.orDie),
+      ).toEqual([])
+
+      // The next prompt in the same session must be admitted and run (no "requires recovery" conflict).
+      const next = yield* prompt.prompt({
+        sessionID: chat.id,
+        agent: "build",
+        parts: [{ type: "text", text: "continue after continue-on-deny" }],
+      })
+      expect(
+        next.parts.some((part) => part.type === "text" && part.text === "next prompt admitted after continue-on-deny"),
+      ).toBeTrue()
+      expect(yield* llm.hits).toHaveLength(3)
+      expect(
+        yield* db
+          .select()
+          .from(SessionActivityAdmissionTable)
+          .where(eq(SessionActivityAdmissionTable.session_id, chat.id))
+          .all()
+          .pipe(Effect.orDie),
+      ).toHaveLength(2)
+      expect(yield* db.select().from(SessionLegacyActivityTable).all().pipe(Effect.orDie)).toMatchObject([
+        { state: "settled", terminal_reason: "assistant_completed" },
+        { state: "settled", terminal_reason: "assistant_completed" },
+      ])
+    }),
+  15_000,
+)
+
+// ---------------------------------------------------------------------------
+// BUG-407-009 shape: abandoned resolution of an indeterminate receipt
+// ---------------------------------------------------------------------------
+
+const resolutionLayer = Layer.mergeAll(
+  Session.defaultLayer,
+  Database.defaultLayer,
+  EventV2Bridge.defaultLayer,
+  SessionProjector.defaultLayer,
+  SessionLegacyProviderResolution.defaultLayer,
+  SessionProviderOwner.layer.pipe(Layer.provide(Database.defaultLayer)),
+  LocationIdentity.defaultLayer,
+)
+const resolution = testEffect(resolutionLayer)
+const resolutionModel = { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("model") }
+let nextMessageTime = 1
+
+const addUser = Effect.fn("IncidentRegression.addUser")(function* (
+  sessionID: Parameters<Session.Interface["get"]>[0],
+  text: string,
+) {
+  const session = yield* Session.Service
+  const message = yield* session.updateMessage({
+    id: MessageID.ascending(`msg_${String(nextMessageTime++).padStart(26, "0")}`),
+    sessionID,
+    role: "user",
+    time: { created: Date.now() },
+    agent: "build",
+    model: resolutionModel,
+  })
+  yield* session.updatePart({
+    id: PartID.ascending(),
+    sessionID,
+    messageID: message.id,
+    type: "text",
+    text,
+  })
+  return message
+})
+
+const addAssistant = Effect.fn("IncidentRegression.addAssistant")(function* (
+  sessionID: Parameters<Session.Interface["get"]>[0],
+  parentID: MessageID,
+  completed = false,
+) {
+  const session = yield* Session.Service
+  return yield* session.updateMessage({
+    id: MessageID.ascending(`msg_${String(nextMessageTime++).padStart(26, "0")}`),
+    sessionID,
+    role: "assistant",
+    parentID,
+    time: { created: Date.now(), ...(completed ? { completed: Date.now() } : {}) },
+    mode: "build",
+    agent: "build",
+    cost: 0,
+    path: { cwd: "/tmp", root: "/tmp" },
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    modelID: resolutionModel.modelID,
+    providerID: resolutionModel.providerID,
+    ...(completed ? { finish: "stop" as const } : {}),
+  })
+})
+
+// Mirrors the legal-lifecycle crash fixture of legacy-provider-resolution.test.ts:
+// rows are seeded in non-terminal states and advanced through the provider
+// lifecycle updates before being left indeterminate by a simulated restart.
+const seedIndeterminateProviderTurn = Effect.fn("IncidentRegression.seedIndeterminateProviderTurn")(
+  function* (input: {
+    session: Session.Info
+    userMessageID: MessageID
+    assistantMessageID: MessageID
+    receiptID: string
+    providerAttemptID: string
+    activityID: string
+    selectionID: string
+    requestHash: string
+    prompt?: { epoch: number; windowID: string; historyHash: string }
+  }) {
+    const db = (yield* Database.Service).db
+    const owners = yield* SessionProviderOwner.Service
+    const identity = yield* LocationIdentity.Service.use((service) =>
+      service.resolve({
+        boundary: { kind: "implicit_local" },
+        directory: AbsolutePath.make(input.session.directory),
+        project: { kind: "git", observedProjectId: input.session.projectID },
+      }),
+    )
+    const binding = DeepAgentReleasedSnapshot.binding(undefined)
+    const staleOwnerToken = `stale:${input.receiptID}`
+    const recoveryOwnerToken = `recovery:${input.receiptID}`
+    const now = Date.now()
+    const preparedTurnHash = Hash.sha256(`prepared:${input.receiptID}`)
+    const contextEligibility = ContextFederationRollout.resolveProject(
+      ContextFederationRollout.resolve(
+        {
+          contextFederationShadow: true,
+          locationIndexesV2Shadow: true,
+          contextProjectionV2: true,
+          contextQueryToolsV2: true,
+          coreV2ExecutionOwner: false,
+        },
+        { coreV2ParityVerified: false },
+      ),
+      identity.projectScopeKey,
+      { stage: "all", percentage: 100, internalProjectScopeKeys: [], killSwitch: false },
+    )
+    const contextReadiness = {
+      ...ContextFederationRollout.READINESS_READY_STUB,
+      revision: `readiness:${input.receiptID}`,
+      observedAt: now,
+      expiresAt: now + 60_000,
+    }
+    const contextActivation = ContextActivationReceipt.make({
+      readiness: contextReadiness,
+      decision: ContextFederationRollout.activate(contextEligibility, contextReadiness),
+      recordedAt: now,
+      projectionEnabled: true,
+      toolsEnabled: true,
+      selection: { selectionId: input.selectionID, projectionHash: "projection" },
+    })
+
+    yield* owners.register({ ownerToken: staleOwnerToken, leaseMs: SessionProviderOwner.LeaseMs })
+    yield* Effect.addFinalizer(() => owners.release({ ownerToken: staleOwnerToken }).pipe(Effect.ignore))
+    yield* db
+      .insert(SessionInputTable)
+      .values({
+        id: SessionMessage.ID.make(input.userMessageID),
+        session_id: input.session.id,
+        prompt: new Prompt({ text: "dispatch then crash" }),
+        delivery: "steer",
+        admitted_seq: 0,
+        promoted_seq: 0,
+      })
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionActivityTable) // fixture-exempt: seeds active activity for BUG-407-009 abandoned-resolution fixture
+      .values({
+        activity_id: input.activityID,
+        session_id: input.session.id,
+        ordinal: 0,
+        trigger_input_id: input.userMessageID,
+        delivery: "steer",
+        state: "active",
+        created_at: now,
+      })
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionContextSelectionTable)
+      .values({
+        selection_id: input.selectionID,
+        session_id: input.session.id,
+        activity_id: input.activityID,
+        revision: 0,
+        trigger_input_id: input.userMessageID,
+        location_key: identity.locationKey,
+        security_namespace_id: identity.securityNamespaceId,
+        project_scope_key: identity.projectScopeKey,
+        query_fingerprint: "query",
+        authorization_fingerprint: "authorization",
+        authorization_epoch: 0,
+        execution_fingerprint: "execution",
+        selected_source_fingerprint: "sources",
+        observed_location_mutation_epoch: 0,
+        next_revalidation_at: now + 60_000,
+        released_knowledge_binding_state: binding.state,
+        released_knowledge_exact_refs: binding.exactRefs,
+        released_knowledge_exact_refs_fingerprint: binding.exactRefsFingerprint,
+        graph_revisions: "{}",
+        graph_statuses: "[]",
+        selected_refs: "[]",
+        projection: "",
+        projection_hash: "projection",
+        token_count: 0,
+        artifact_write_status: "degraded_unavailable",
+        inline_audit: "{}",
+        created_at: now,
+      })
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionProviderAttemptTable) // fixture-exempt: seeds prepared attempt with stale owner for BUG-407-009 crash fixture
+      .values({
+        attempt_id: input.providerAttemptID,
+        session_id: input.session.id,
+        activity_id: input.activityID,
+        provider_turn_seq: 0,
+        selection_id: input.selectionID,
+        projection_hash: "projection",
+        request_hash: input.requestHash,
+        provider_id: resolutionModel.providerID,
+        owner_token: staleOwnerToken,
+        state: "prepared",
+        created_at: now,
+      })
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds preparing receipt for BUG-407-009 crash fixture
+      .values({
+        receipt_id: input.receiptID,
+        request_ordinal: 1,
+        session_id: input.session.id,
+        user_message_id: input.userMessageID,
+        assistant_message_id: input.assistantMessageID,
+        provider_attempt_id: input.providerAttemptID,
+        context_selection_id: input.selectionID,
+        context_eligibility: contextEligibility,
+        context_readiness: contextReadiness,
+        context_activation: contextActivation,
+        context_activation_fingerprint: ContextActivationReceipt.fingerprint({
+          eligibility: contextEligibility,
+          readiness: contextReadiness,
+          activation: contextActivation,
+        }),
+        released_knowledge_security_namespace_id: identity.securityNamespaceId,
+        released_knowledge_project_scope_key: identity.projectScopeKey,
+        released_knowledge_binding_state: binding.state,
+        released_knowledge_exact_refs: binding.exactRefs,
+        released_knowledge_exact_refs_fingerprint: binding.exactRefsFingerprint,
+        provider_id: resolutionModel.providerID,
+        model_id: resolutionModel.modelID,
+        protocol: "chat",
+        registry_tool_ids: [],
+        permission_filtered_tool_ids: [],
+        final_offered_tool_ids: [],
+        call_ids: [],
+        ...(input.prompt
+          ? {
+              prompt_epoch: input.prompt.epoch,
+              prompt_window_id: input.prompt.windowID,
+              effective_history_hash: input.prompt.historyHash,
+            }
+          : {}),
+        request_input_hash: input.requestHash,
+        provider_state: "preparing",
+        owner_token: staleOwnerToken,
+        request_state: "prepared",
+        created_at: now,
+      })
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ prepared_turn_hash: preparedTurnHash, wire_request_hash: input.requestHash })
+      .where(eq(SessionProviderAttemptTable.attempt_id, input.providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        released_knowledge_selected_refs: [],
+        released_knowledge_selected_refs_fingerprint: binding.exactRefsFingerprint,
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, input.receiptID))
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        provider_state: "prepared",
+        final_request_hash: input.requestHash,
+        provider_request_hash: input.requestHash,
+        adapter_prepared_at: now,
+        tool_definition_hash: Hash.sha256("[]"),
+        prepared_turn_hash: preparedTurnHash,
+        system_stable_hash: Hash.sha256(`stable:${input.receiptID}`),
+        system_volatile_hash: Hash.sha256(`volatile:${input.receiptID}`),
+        wire_request_hash: input.requestHash,
+        tool_result_reference_ids: [],
+        tool_result_reference_count: 0,
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, input.receiptID))
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ state: "dispatching" })
+      .where(eq(SessionProviderAttemptTable.attempt_id, input.providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
+    yield* db
+      .update(SessionToolRequestReceiptTable)
+      .set({
+        provider_state: "indeterminate_after_crash",
+        request_state: "dispatched",
+        dispatching_at: now,
+        terminal_at: now,
+        request_error_code: "provider_started_outcome_unknown_after_process_restart",
+      })
+      .where(eq(SessionToolRequestReceiptTable.receipt_id, input.receiptID))
+      .run()
+      .pipe(Effect.orDie)
+    yield* owners.register({ ownerToken: recoveryOwnerToken, leaseMs: SessionProviderOwner.LeaseMs })
+    yield* Effect.addFinalizer(() => owners.release({ ownerToken: recoveryOwnerToken }).pipe(Effect.ignore))
+    yield* owners.release({ ownerToken: staleOwnerToken })
+    yield* db
+      .update(SessionProviderAttemptTable)
+      .set({ state: "indeterminate_after_crash", error_code: "process_recovery" })
+      .where(eq(SessionProviderAttemptTable.attempt_id, input.providerAttemptID))
+      .run()
+      .pipe(Effect.orDie)
+    return { recoveryOwnerToken }
+  },
+)
+
+resolution.instance(
+  "BUG-407-009: abandoned resolution unblocks the session, permits cutoff forks, and is idempotent",
+  () =>
+    Effect.gen(function* () {
+      const sessions = yield* Session.Service
+      const recovery = yield* SessionLegacyProviderResolution.Service
+      yield* TestInstance
+      const { db } = yield* Database.Service
+      const parent = yield* sessions.create({ title: "incident abandoned resolution parent" })
+      const source = yield* sessions.fork({ sessionID: parent.id, intentID: "incident-abandoned-source" })
+      const safeUser = yield* addUser(source.id, "completed before provider crash")
+      const safeAssistant = yield* addAssistant(source.id, safeUser.id, true)
+      const user = yield* addUser(source.id, "dispatch then crash")
+      const assistant = yield* addAssistant(source.id, user.id)
+      const authority = yield* MessageV2.promptHistoryProjectionEffect(source.id)
+      if (!authority.worldStateBaselineHash) return yield* Effect.die("expected frozen source World State baseline")
+      const receiptID = "receipt-incident-abandoned"
+      const providerAttemptID = "attempt-incident-abandoned"
+      const providerActivityID = "activity-incident-abandoned"
+      const providerSelectionID = "selection-incident-abandoned"
+      const seeded = yield* seedIndeterminateProviderTurn({
+        session: source,
+        userMessageID: user.id,
+        assistantMessageID: assistant.id,
+        receiptID,
+        providerAttemptID,
+        activityID: providerActivityID,
+        selectionID: providerSelectionID,
+        requestHash: Hash.sha256("incident-final-request-hash"),
+        prompt: {
+          epoch: authority.epoch,
+          windowID: authority.window.windowID,
+          historyHash: authority.effectiveHistoryHash,
+        },
+      })
+      const now = Date.now()
+      yield* db
+        .update(SessionPromptEpochTable)
+        .set({ authority_state: "recovery_required", recovery_reason: "provider outcome is unknown after restart" })
+        .where(
+          and(eq(SessionPromptEpochTable.session_id, source.id), eq(SessionPromptEpochTable.epoch, authority.epoch)),
+        )
+        .run()
+        .pipe(Effect.orDie)
+      yield* db
+        .update(SessionHistoryStateTable)
+        .set({
+          state: "recovery_required",
+          reason: "provider outcome is unknown after restart",
+          time_updated: now,
+        })
+        .where(eq(SessionHistoryStateTable.session_id, source.id))
+        .run()
+        .pipe(Effect.orDie)
+
+      const descriptors = yield* recovery.describe(source.id)
+      expect(descriptors).toHaveLength(1)
+      const [descriptor] = descriptors
+      expect(descriptor).toMatchObject({
+        receiptID,
+        sessionID: source.id,
+        providerState: "indeterminate_after_crash",
+        promptEpoch: authority.epoch,
+        continuationRecoverySupported: true,
+      })
+
+      // While the turn is indeterminate, forking before the crashed turn's
+      // cutoff stays possible and cutoffs at/after it stay blocked.
+      const prefixFork = yield* sessions.fork({
+        sessionID: source.id,
+        messageID: user.id,
+        intentID: "fork-before-incident-abandoned-turn",
+      })
+      expect(
+        (yield* sessions.messages({ sessionID: prefixFork.id })).map((message) => message.info.role),
+      ).toEqual(["user", "assistant"])
+      expect(
+        yield* sessions
+          .fork({
+            sessionID: source.id,
+            messageID: assistant.id,
+            intentID: "fork-at-incident-abandoned-turn",
+          })
+          .pipe(Effect.flip),
+      ).toMatchObject({
+        _tag: "Session.ForkConflict",
+        reason: expect.stringContaining("fork cutoff is outside the recoverable history prefix"),
+      })
+
+      if (!descriptor) return
+      if (!descriptor.resolutionSupported)
+        return yield* Effect.die(
+          `expected a resolvable provider recovery descriptor: ${descriptor.unsupportedReasons.join(",")}`,
+        )
+      const command = {
+        sessionID: source.id,
+        commandID: "resolve-incident-abandoned",
+        receiptID,
+        decision: "abandoned" as const,
+        expected: {
+          providerState: "indeterminate_after_crash" as const,
+          promptEpoch: descriptor.promptEpoch,
+          sessionMutationEpoch: descriptor.sessionMutationEpoch,
+          requestHash: descriptor.requestHash,
+          historyHash: descriptor.historyHash,
+          worldStateBaselineHash: descriptor.worldStateBaselineHash,
+        },
+        actorID: "test-user",
+      }
+
+      // Explicit abandoned resolution, then idempotent repeats.
+      const first = yield* recovery.resolve(command)
+      expect(first).toMatchObject({
+        decision: "abandoned",
+        sourcePromptEpoch: authority.epoch,
+        successorPromptEpoch: authority.epoch + 1,
+        sourceMutationEpoch: 0,
+        successorMutationEpoch: 1,
+      })
+      const retry = yield* recovery.resolve(command)
+      expect(retry).toEqual(first)
+      const repeat = yield* recovery.resolve(command)
+      expect(repeat).toEqual(first)
+      expect(yield* recovery.describe(source.id)).toEqual([])
+      expect(
+        yield* db
+          .select({ attemptID: SessionProviderAttemptResolutionTable.attempt_id, decision: SessionProviderAttemptResolutionTable.decision })
+          .from(SessionProviderAttemptResolutionTable)
+          .all()
+          .pipe(Effect.orDie),
+      ).toEqual([{ attemptID: providerAttemptID, decision: "abandoned" }])
+      expect(
+        yield* db
+          .select({ state: SessionProviderAttemptTable.state })
+          .from(SessionProviderAttemptTable)
+          .where(eq(SessionProviderAttemptTable.attempt_id, providerAttemptID))
+          .get()
+          .pipe(Effect.orDie),
+      ).toEqual({ state: "resolved_abandoned" })
+      expect(
+        yield* db
+          .select({ state: SessionActivityTable.state })
+          .from(SessionActivityTable)
+          .where(eq(SessionActivityTable.activity_id, providerActivityID))
+          .get()
+          .pipe(Effect.orDie),
+      ).toEqual({ state: "interrupted" })
+
+      // Startup recovery after resolution must clear the quarantine to ready.
+      yield* recoverProviderReceiptsOnStartup({ ownerToken: seeded.recoveryOwnerToken })
+      expect(
+        yield* db
+          .select({ state: SessionHistoryStateTable.state })
+          .from(SessionHistoryStateTable)
+          .where(eq(SessionHistoryStateTable.session_id, source.id))
+          .get()
+          .pipe(Effect.orDie),
+      ).toEqual({ state: "ready" })
+
+      // Forking stays possible after resolution: the safe prefix copies cleanly.
+      const fork = yield* sessions.fork({
+        sessionID: source.id,
+        intentID: "fork-after-incident-abandoned-resolution",
+      })
+      expect(
+        (yield* sessions.messages({ sessionID: fork.id })).map((message) => message.info.role),
+      ).toEqual(["user", "assistant"])
+
+      // The session keeps accepting newly admitted messages.
+      const continued = yield* addUser(source.id, "continue after explicit abandon")
+      const admittedAt = Date.now()
+      yield* db
+        .insert(SessionIntentTable)
+        .values({
+          intent_id: "incident-continue-after-explicit-abandon",
+          session_id: source.id,
+          source: "composer",
+          state: "admitted",
+          selected_variant: "original",
+          selected_payload_hash: "test",
+          delivery: "turn",
+          admitted_message_id: continued.id,
+          execution_mode: "legacy",
+          execution_state: "legacy",
+          mutation_epoch: first.successorMutationEpoch,
+          version: 1,
+          time_created: admittedAt,
+          time_selected: admittedAt,
+          time_admitted: admittedAt,
+          time_updated: admittedAt,
+        })
+        .run()
+        .pipe(Effect.orDie)
+      const continuedProjection = yield* MessageV2.promptHistoryProjectionEffect(source.id)
+      expect(continuedProjection.messages.map((message) => message.info.id)).toEqual([
+        safeUser.id,
+        safeAssistant.id,
+        continued.id,
+      ])
+      expect(continuedProjection.epoch).toBe(authority.epoch + 1)
+      expect(continuedProjection.recoveryResolutionID).toBe(first.resolutionID)
+    }),
+  { git: true },
+  30_000,
+)
diff --git a/packages/deepagent-code/test/session/legacy-provider-resolution.test.ts b/packages/deepagent-code/test/session/legacy-provider-resolution.test.ts
index ced0fa9e..074b7a50 100644
--- a/packages/deepagent-code/test/session/legacy-provider-resolution.test.ts
+++ b/packages/deepagent-code/test/session/legacy-provider-resolution.test.ts
@@ -174,7 +174,7 @@ const seedIndeterminateProviderTurn = Effect.fn("LegacyProviderResolutionTest.se
       .run()
       .pipe(Effect.orDie)
     yield* db
-      .insert(SessionActivityTable)
+      .insert(SessionActivityTable) // fixture-exempt: seeds active activity for legacy-resolution fixture
       .values({
         activity_id: input.activityID,
         session_id: input.session.id,
@@ -220,7 +220,7 @@ const seedIndeterminateProviderTurn = Effect.fn("LegacyProviderResolutionTest.se
       .run()
       .pipe(Effect.orDie)
     yield* db
-      .insert(SessionProviderAttemptTable)
+      .insert(SessionProviderAttemptTable) // fixture-exempt: seeds prepared attempt with stale owner for crash fixture
       .values({
         attempt_id: input.providerAttemptID,
         session_id: input.session.id,
@@ -237,7 +237,7 @@ const seedIndeterminateProviderTurn = Effect.fn("LegacyProviderResolutionTest.se
       .run()
       .pipe(Effect.orDie)
     yield* db
-      .insert(SessionToolRequestReceiptTable)
+      .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds receipt mid-state for legacy-resolution fixture
       .values({
         receipt_id: input.receiptID,
         request_ordinal: 1,
diff --git a/packages/deepagent-code/test/session/llm-native.test.ts b/packages/deepagent-code/test/session/llm-native.test.ts
index 2310323a..4a8b7474 100644
--- a/packages/deepagent-code/test/session/llm-native.test.ts
+++ b/packages/deepagent-code/test/session/llm-native.test.ts
@@ -6,6 +6,9 @@ import { Effect, Fiber, Layer, Stream } from "effect"
 import { LLMNative } from "@/session/llm/native-request"
 import { LLMNativeRuntime } from "@/session/llm/native-runtime"
 import { FreeformTools } from "@/session/llm/freeform-tools"
+import { LLMRequestPrep } from "@/session/llm/request"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import type { SessionV1 } from "@deepagent-code/core/v1/session"
 import type { Provider } from "@/provider/provider"
 
 import { OAUTH_DUMMY_KEY } from "@/auth"
@@ -73,10 +76,58 @@ const providerInfo: Provider.Info = {
   models: {},
 }
 
+const deepseekModel: Provider.Model = {
+  ...baseModel,
+  id: ModelV2.ID.make("deepseek-reasoner"),
+  providerID: ProviderV2.ID.make("deepseek"),
+  api: {
+    id: "deepseek-reasoner",
+    url: "https://api.deepseek.com/v1",
+    npm: "@ai-sdk/openai-compatible",
+  },
+  name: "DeepSeek Reasoner",
+}
+
 const it = testEffect(
   LLMClient.layer.pipe(Layer.provide(Layer.mergeAll(RequestExecutor.defaultLayer, WebSocketExecutor.layer))),
 )
 
+// UPD-002 residual: the wire-structured-output capability is a CANONICAL declaration, never assumed
+// from Responses support. Locks the two independent facts: the reference OpenAI package is
+// format-capable, while a Responses-capable compatible family (deepseek) is NOT wire-format-capable
+// unless its profile opts in (none do today).
+describe("UPD-002 wire structured-output capability (canonical declaration)", () => {
+  const wireInput = (model: Provider.Model) => ({
+    user: { format: { type: "json_schema" }, metadata: {} } as unknown as SessionV1.User,
+    model,
+    flags: { experimentalNativeLlm: true } as RuntimeFlags.Info,
+  })
+
+  test("reference OpenAI package delivers json_schema over the wire", () => {
+    expect(LLMRequestPrep.shouldUseWireStructuredOutput(wireInput(baseModel))).toBe(true)
+  })
+
+  test("deepseek is Responses-family but NOT wire-format-capable (Responses ≠ format)", () => {
+    expect(LLMRequestPrep.shouldUseWireStructuredOutput(wireInput(deepseekModel))).toBe(false)
+  })
+
+  test("non-Responses providers never take the wire path", () => {
+    const anthropic = {
+      ...baseModel,
+      providerID: ProviderV2.ID.make("anthropic"),
+      api: { ...baseModel.api, npm: "@ai-sdk/anthropic" },
+    }
+    expect(LLMRequestPrep.shouldUseWireStructuredOutput(wireInput(anthropic))).toBe(false)
+  })
+
+  test("without the native runtime flag the wire path is off even for a capable model", () => {
+    const input = wireInput(baseModel)
+    expect(
+      LLMRequestPrep.shouldUseWireStructuredOutput({ ...input, flags: { experimentalNativeLlm: false } as RuntimeFlags.Info }),
+    ).toBe(false)
+  })
+})
+
 function responsesStream(chunks: unknown[]) {
   return new Response(chunks.map((chunk) => `data: ${JSON.stringify(chunk)}`).join("\n\n") + "\n\n", {
     status: 200,
@@ -366,6 +417,31 @@ describe("session.llm-native.request", () => {
     expect(compatible.route.id).toBe("openai-compatible-chat")
     expect(compatible.route.endpoint.baseURL).toBe("https://ai.example.test/v1")
 
+    // Capability-based fork: deepseek profiles declare `supportsResponses`,
+    // so they land on the Responses route with deepseek provider ownership —
+    // never the hardcoded openai route/provider.
+    const deepseek = LLMNative.model({
+      model: deepseekModel,
+      apiKey: "test-key",
+      messages: [],
+    })
+    expect(deepseek.route.id).toBe("openai-compatible-responses")
+    expect(String(deepseek.provider)).toBe("deepseek")
+    expect(String(deepseek.provider)).not.toBe("openai")
+    expect(deepseek.route.endpoint.baseURL).toBe("https://api.deepseek.com/v1")
+
+    const groq = LLMNative.model({
+      model: {
+        ...baseModel,
+        providerID: ProviderV2.ID.make("groq"),
+        api: { ...baseModel.api, url: "https://api.groq.com/openai/v1", npm: "@ai-sdk/openai-compatible" },
+      },
+      apiKey: "test-key",
+      messages: [],
+    })
+    expect(groq.route.id).toBe("openai-compatible-chat")
+    expect(String(groq.provider)).toBe("groq")
+
     const openrouter = LLMNative.model({
       model: { ...baseModel, api: { ...baseModel.api, url: "", npm: "@openrouter/ai-sdk-provider" } },
       apiKey: "test-key",
@@ -419,7 +495,7 @@ describe("session.llm-native.request", () => {
         provider: { ...providerInfo, id: ProviderV2.ID.make("google") },
         auth: undefined,
       }),
-    ).toEqual({ type: "unsupported", reason: "provider is not openai, deepagent-code, anthropic, or deepagent" })
+    ).toEqual({ type: "unsupported", reason: "provider is not openai, deepagent-code, anthropic, deepagent, or deepseek" })
     expect(
       LLMNativeRuntime.status({
         model: baseModel,
@@ -452,6 +528,22 @@ describe("session.llm-native.request", () => {
     ).toEqual({ type: "unsupported", reason: "API key is not configured" })
   })
 
+  test("enables native runtime for deepseek API-key models", () => {
+    expect(
+      LLMNativeRuntime.status({
+        model: deepseekModel,
+        provider: {
+          ...providerInfo,
+          id: ProviderV2.ID.make("deepseek"),
+          name: "DeepSeek",
+          env: ["DEEPSEEK_API_KEY"],
+          options: { apiKey: "test-deepseek-key" },
+        },
+        auth: undefined,
+      }),
+    ).toMatchObject({ type: "supported", apiKey: "test-deepseek-key" })
+  })
+
   test("enables native runtime for Anthropic API-key models", () => {
     expect(
       LLMNativeRuntime.status({
@@ -785,6 +877,33 @@ describe("session.llm-native.request", () => {
     }),
   )
 
+  it.effect("compiles deepseek through the compatible Responses route without include/store", () =>
+    Effect.gen(function* () {
+      const prepared = yield* prepareNativeRequest({
+        model: deepseekModel,
+        apiKey: "test-deepseek-key",
+        messages: [{ role: "user", content: "hello" }],
+        // DeepSeek's Responses compatibility set has not been proven to
+        // support encrypted reasoning; family options keyed under `deepseek`
+        // must never surface OpenAI-only wire fields (include/store).
+        providerOptions: { deepseek: { store: false, include: ["reasoning.encrypted_content"] } },
+      })
+      expect(prepared).toMatchObject({
+        route: "openai-compatible-responses",
+        protocol: "openai-responses",
+        model: { id: "deepseek-reasoner", provider: "deepseek" },
+      })
+      expect(prepared.model.provider).not.toBe("openai")
+      expect(prepared.body).not.toHaveProperty("include")
+      expect(prepared.body).not.toHaveProperty("store")
+      expect(prepared.body).toMatchObject({
+        model: "deepseek-reasoner",
+        input: [{ role: "user", content: [{ type: "input_text", text: "hello" }] }],
+        stream: true,
+      })
+    }),
+  )
+
   it.effect("uses provider fetch override for native OpenAI OAuth requests", () =>
     Effect.gen(function* () {
       const captures: Array<{ url: string; body: unknown }> = []
diff --git a/packages/deepagent-code/test/session/llm/tool-pairing.test.ts b/packages/deepagent-code/test/session/llm/tool-pairing.test.ts
new file mode 100644
index 00000000..ff8a346b
--- /dev/null
+++ b/packages/deepagent-code/test/session/llm/tool-pairing.test.ts
@@ -0,0 +1,322 @@
+import { describe, expect, test } from "bun:test"
+import type { ModelMessage } from "ai"
+import { ProviderTransform } from "@/provider/transform"
+import { ToolPairing } from "@/session/llm/tool-pairing"
+
+const INTERRUPTED = "[Tool execution was interrupted]"
+
+function call(toolCallId: string, toolName = "bash") {
+  return { type: "tool-call" as const, toolCallId, toolName, input: { cmd: "ls" } }
+}
+
+function result(toolCallId: string, toolName = "bash", value = "ok") {
+  return { type: "tool-result" as const, toolCallId, toolName, output: { type: "text" as const, value } }
+}
+
+function toolMsg(...parts: ReturnType<typeof result>[]): ModelMessage {
+  return { role: "tool", content: parts }
+}
+
+describe("ToolPairing.repairToolPairing - missing result synthesis", () => {
+  test("synthesizes an error result right after the assistant message carrying the call", () => {
+    const input: ModelMessage[] = [
+      { role: "user", content: "hi" },
+      { role: "assistant", content: [call("call_1")] },
+      { role: "assistant", content: [{ type: "text", text: "continuing" }] },
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(4)
+    expect(out[0]).toBe(input[0])
+    expect(out[1]).toBe(input[1])
+    expect(out[2]).toEqual({
+      role: "tool",
+      content: [
+        {
+          type: "tool-result",
+          toolCallId: "call_1",
+          toolName: "bash",
+          output: { type: "error-text", value: INTERRUPTED },
+        },
+      ],
+    })
+    expect(out[3]).toBe(input[2])
+  })
+
+  test("synthesizes at the end when the dangling call is in the last message", () => {
+    const input: ModelMessage[] = [{ role: "assistant", content: [call("call_last", "read")] }]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(2)
+    expect(out[1]).toEqual({
+      role: "tool",
+      content: [
+        {
+          type: "tool-result",
+          toolCallId: "call_last",
+          toolName: "read",
+          output: { type: "error-text", value: INTERRUPTED },
+        },
+      ],
+    })
+  })
+
+  test("synthesizes only the unmatched call when siblings are paired", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_a"), call("call_b", "read")] },
+      toolMsg(result("call_a")),
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(3)
+    // synthetic for call_b sits between the call message and the result message
+    expect((out[1] as any).content[0].toolCallId).toBe("call_b")
+    expect((out[1] as any).content[0].output).toEqual({ type: "error-text", value: INTERRUPTED })
+    expect(out[2]).toEqual(input[1])
+  })
+
+  test("does not mutate its input", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1")] },
+      { role: "tool", content: [{ ...result("ghost") }] },
+    ]
+    const snapshot = JSON.parse(JSON.stringify(input))
+    ToolPairing.repairToolPairing(input)
+    expect(input).toEqual(snapshot)
+  })
+})
+
+describe("ToolPairing.repairToolPairing - orphan result stripping", () => {
+  test("strips tool results whose callID never appeared as a call", () => {
+    const input: ModelMessage[] = [
+      toolMsg(result("ghost_1"), result("ghost_2", "read")),
+      { role: "assistant", content: [call("call_1")] },
+      toolMsg(result("call_1")),
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(2)
+    expect(out[0]).toBe(input[1])
+    expect(out[1]).toBe(input[2])
+  })
+
+  test("drops a message entirely when all of its parts are stripped", () => {
+    const input: ModelMessage[] = [
+      { role: "user", content: "hi" },
+      toolMsg(result("ghost")),
+      { role: "assistant", content: [{ type: "text", text: "ok" }] },
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(2)
+    expect(out[0]).toBe(input[0])
+    expect(out[1]).toBe(input[2])
+  })
+
+  test("strips a result that appears before its call (no preceding call)", () => {
+    const input: ModelMessage[] = [
+      toolMsg(result("call_1")),
+      { role: "assistant", content: [call("call_1")] },
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    // orphan result message dropped; dangling call gets a synthetic result
+    expect(out).toHaveLength(2)
+    expect(out[0]).toBe(input[1])
+    expect((out[1] as any).content[0].output).toEqual({ type: "error-text", value: INTERRUPTED })
+  })
+
+  test("keeps non-result parts inside tool messages", () => {
+    const approvalResponse = { type: "tool-approval-response" as const, approvalId: "appr_1", approved: true }
+    const input: ModelMessage[] = [{ role: "tool", content: [result("ghost"), approvalResponse] as any }]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(1)
+    expect((out[0] as any).content).toEqual([approvalResponse])
+  })
+})
+
+describe("ToolPairing.repairToolPairing - duplicate callID dedup", () => {
+  test("keeps the first call and first result for a duplicated callID", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_dup"), call("call_dup")] },
+      toolMsg(result("call_dup", "bash", "first"), result("call_dup", "bash", "second")),
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(2)
+    expect((out[0] as any).content).toEqual([call("call_dup")])
+    expect((out[1] as any).content).toEqual([result("call_dup", "bash", "first")])
+  })
+
+  test("keeps the first result when the duplicate call was dropped", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_x")] },
+      { role: "assistant", content: [call("call_x")] },
+      toolMsg(result("call_x", "bash", "keep")),
+      toolMsg(result("call_x", "bash", "drop")),
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    // duplicate call message is dropped entirely; duplicate result stripped
+    expect(out).toHaveLength(2)
+    expect(out[0]).toBe(input[0])
+    expect(out[1]).toBe(input[2])
+  })
+})
+
+describe("ToolPairing.repairToolPairing - invariants", () => {
+  test("well-formed history passes through with identical references", () => {
+    const input: ModelMessage[] = [
+      { role: "system", content: "be nice" },
+      { role: "user", content: "hi" },
+      { role: "assistant", content: [{ type: "text", text: "thinking" }, call("call_1")] },
+      toolMsg(result("call_1")),
+      { role: "assistant", content: [call("call_2", "read")] },
+      toolMsg(result("call_2", "read", "file content")),
+      { role: "assistant", content: [{ type: "text", text: "done" }] },
+    ]
+    const out = ToolPairing.repairToolPairing(input)
+    expect(out).toHaveLength(input.length)
+    input.forEach((msg, i) => expect(out[i]).toBe(msg))
+  })
+})
+
+describe("ProviderTransform.message - UPD-001 integration", () => {
+  const mistralModel = {
+    id: "mistral/mistral-medium-latest",
+    providerID: "mistral",
+    api: { id: "mistral-medium-latest", url: "https://api.mistral.ai", npm: "@ai-sdk/mistral" },
+    capabilities: {
+      temperature: true,
+      reasoning: false,
+      attachment: false,
+      toolcall: true,
+      input: { text: true, audio: false, image: false, video: false, pdf: false },
+      output: { text: true, audio: false, image: false, video: false, pdf: false },
+      interleaved: false,
+    },
+  } as any
+
+  const plainModel = {
+    id: "openai/gpt-4o",
+    providerID: "openai",
+    api: { id: "gpt-4o", url: "https://api.openai.com", npm: "@ai-sdk/openai" },
+    capabilities: {
+      temperature: true,
+      reasoning: false,
+      attachment: false,
+      toolcall: true,
+      input: { text: true, audio: false, image: false, video: false, pdf: false },
+      output: { text: true, audio: false, image: false, video: false, pdf: false },
+      interleaved: false,
+    },
+  } as any
+
+  test("dedups callIDs that only collide after the mistral scrub", () => {
+    // Both IDs scrub to "callabc12" (non-alphanumerics removed, truncated to 9)
+    const id1 = "call_abc123XYZ"
+    const id2 = "call_abc123!UV"
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call(id1, "bash"), call(id2, "read")] },
+      toolMsg(result(id1, "bash", "first"), result(id2, "read", "second")),
+    ]
+    const out = ProviderTransform.message(input, mistralModel, {})
+    const assistant = out.find((m) => m.role === "assistant")!
+    const toolMsgs = out.filter((m) => m.role === "tool")
+    const callIds = (assistant.content as any[]).filter((p) => p.type === "tool-call").map((p) => p.toolCallId)
+    const resultIds = toolMsgs.flatMap((m) => (m.content as any[]).map((p) => p.toolCallId))
+    expect(callIds).toEqual(["callabc12"])
+    expect(resultIds).toEqual(["callabc12"])
+    // kept result is the first one
+    expect((toolMsgs[0].content as any[])[0].output).toEqual({ type: "text", value: "first" })
+  })
+
+  test("synthetic result before a user message gets the mistral assistant bridge", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_missing")] },
+      { role: "user", content: "keep going" },
+    ]
+    const out = ProviderTransform.message(input, mistralModel, {})
+    expect(out.map((m) => m.role)).toEqual(["assistant", "tool", "assistant", "user"])
+    expect((out[1].content as any[])[0].output).toEqual({ type: "error-text", value: INTERRUPTED })
+    expect(out[2]).toEqual({ role: "assistant", content: [{ type: "text", text: "Done." }] })
+  })
+
+  test("well-formed message() output is structurally unchanged", () => {
+    const input: ModelMessage[] = [
+      { role: "user", content: "hi" },
+      { role: "assistant", content: [call("call_1")] },
+      toolMsg(result("call_1")),
+      { role: "assistant", content: [{ type: "text", text: "all done" }] },
+    ]
+    const out = ProviderTransform.message(JSON.parse(JSON.stringify(input)), plainModel, {})
+    expect(out).toEqual(input)
+  })
+
+  test("repairs dangling call on the plain (non-scrubbing) path too", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1")] },
+      { role: "assistant", content: [{ type: "text", text: "next" }] },
+    ]
+    const out = ProviderTransform.message(input, plainModel, {})
+    expect(out.map((m) => m.role)).toEqual(["assistant", "tool", "assistant"])
+    expect((out[1].content as any[])[0]).toEqual({
+      type: "tool-result",
+      toolCallId: "call_1",
+      toolName: "bash",
+      output: { type: "error-text", value: INTERRUPTED },
+    })
+  })
+})
+
+// UPD-001 telemetry: the RepairReport records exactly what the repairer changed so the receipt's
+// pre-repair call_ids ↔ repaired wire body divergence is explainable.
+describe("ToolPairing.repairToolPairing - RepairReport telemetry", () => {
+  test("reports synthesized results for dangling calls", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1")] },
+      { role: "assistant", content: [call("call_2")] },
+    ]
+    const report = ToolPairing.emptyRepairReport()
+    ToolPairing.repairToolPairing(input, { report })
+    expect(report.synthesizedResults.sort()).toEqual(["call_1", "call_2"])
+    expect(report.strippedOrphanResults).toEqual([])
+    expect(report.droppedDuplicates).toEqual([])
+    expect(ToolPairing.repairReportIsEmpty(report)).toBe(false)
+  })
+
+  test("reports stripped orphan results and dropped duplicates", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1"), call("call_1")] },
+      toolMsg(result("call_1"), result("call_1"), result("orphan_x")),
+    ]
+    const report = ToolPairing.emptyRepairReport()
+    ToolPairing.repairToolPairing(input, { report })
+    expect(report.droppedDuplicates).toEqual(["call_1", "call_1"])
+    expect(report.strippedOrphanResults).toEqual(["orphan_x"])
+    expect(report.synthesizedResults).toEqual([])
+  })
+
+  test("a clean history yields an empty report", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1")] },
+      toolMsg(result("call_1")),
+    ]
+    const report = ToolPairing.emptyRepairReport()
+    ToolPairing.repairToolPairing(input, { report })
+    expect(ToolPairing.repairReportIsEmpty(report)).toBe(true)
+  })
+
+  test("counts bridged tool→user gaps when bridging is enabled", () => {
+    const input: ModelMessage[] = [
+      { role: "assistant", content: [call("call_1")] },
+      toolMsg(result("call_1")),
+      { role: "user", content: "follow-up" },
+    ]
+    const report = ToolPairing.emptyRepairReport()
+    ToolPairing.repairToolPairing(input, { bridgeToolUserGap: false, report })
+    expect(report.bridgedToolUserGaps).toBe(0)
+    const reportBridged = ToolPairing.emptyRepairReport()
+    ToolPairing.repairToolPairing(
+      [
+        { role: "assistant", content: [call("call_1")] },
+        { role: "user", content: "follow-up" },
+      ],
+      { bridgeToolUserGap: true, report: reportBridged },
+    )
+    expect(reportBridged.bridgedToolUserGaps).toBe(1)
+    expect(reportBridged.synthesizedResults).toEqual(["call_1"])
+  })
+})
diff --git a/packages/deepagent-code/test/session/message-update-event-bytes.test.ts b/packages/deepagent-code/test/session/message-update-event-bytes.test.ts
new file mode 100644
index 00000000..3eb12cac
--- /dev/null
+++ b/packages/deepagent-code/test/session/message-update-event-bytes.test.ts
@@ -0,0 +1,126 @@
+/**
+ * BUG-407-010 §13.3 / REL-002 — a giant user-message summary must not multiply through the
+ * `message.updated` sync stream. The durable message authority keeps the full summary (inline
+ * patch bodies included), but every published/replayed event carries only the bounded client
+ * projection (patch bodies stripped, diff descriptors capped), so updating the same message 20
+ * times yields 20 bounded events whose cumulative bytes never scale with the patch body.
+ *
+ * Everything is driven through the real `Session.updateMessage` state machine and the real
+ * EventV2 sync persistence; no authority rows are inserted directly.
+ */
+import { expect } from "bun:test"
+import { Database } from "@deepagent-code/core/database/database"
+import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
+import { EventTable } from "@deepagent-code/core/event/sql"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
+import { MessageTable } from "@deepagent-code/core/session/sql"
+import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
+import { asc, eq } from "drizzle-orm"
+import { Effect, Layer } from "effect"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { MessageV2 } from "@/session/message-v2"
+import { Session } from "@/session/session"
+import { MessageID } from "@/session/schema"
+import { testEffect } from "../lib/effect"
+import { TestInstance } from "../fixture/fixture"
+
+const layer = Layer.mergeAll(
+  Session.defaultLayer,
+  Database.defaultLayer,
+  EventV2Bridge.defaultLayer,
+  SessionProjector.defaultLayer,
+  SessionProviderOwner.layer.pipe(Layer.provide(Database.defaultLayer)),
+  LocationIdentity.defaultLayer,
+)
+const it = testEffect(layer)
+const model = { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("model") }
+
+const PATCH_MARKER = "GIANT_PATCH_MARKER"
+const PATCH_LINES = 64
+const DIFF_COUNT = MessageV2.ClientDiffLimits.files + 300
+const UPDATES = 20
+
+it.instance(
+  "20 updates of a giant message keep every message.updated event bounded (no patch multiplication)",
+  () =>
+    Effect.gen(function* () {
+      const sessions = yield* Session.Service
+      const { db } = yield* Database.Service
+      yield* TestInstance
+      const session = yield* sessions.create({ title: "giant message event budget" })
+      const messageID = MessageID.ascending()
+
+      const patchBody = Array.from({ length: PATCH_LINES }, (_, line) => `${PATCH_MARKER}:${line}`).join("\n")
+      const diffs = Array.from({ length: DIFF_COUNT }, (_, index) => ({
+        file: `generated/file-${String(index).padStart(4, "0")}.txt`,
+        additions: PATCH_LINES,
+        deletions: 0,
+        patch: patchBody,
+      }))
+      const patchBytesPerUpdate = Buffer.byteLength(patchBody) * DIFF_COUNT
+
+      const eventsBefore = yield* db
+        .select({ count: EventTable.seq })
+        .from(EventTable)
+        .where(eq(EventTable.aggregate_id, session.id))
+        .all()
+        .pipe(Effect.orDie)
+
+      for (let update = 0; update < UPDATES; update += 1) {
+        yield* sessions.updateMessage({
+          id: messageID,
+          sessionID: session.id,
+          role: "user",
+          time: { created: 1 },
+          agent: "build",
+          model,
+          summary: { additions: PATCH_LINES * DIFF_COUNT, deletions: 0, files: DIFF_COUNT, diffs },
+        } as never)
+      }
+
+      const rows = yield* db
+        .select({ seq: EventTable.seq, type: EventTable.type, data: EventTable.data })
+        .from(EventTable)
+        .where(eq(EventTable.aggregate_id, session.id))
+        .orderBy(asc(EventTable.seq))
+        .all()
+        .pipe(Effect.orDie)
+      const updated = rows.filter((row) => row.type === "message.updated.1")
+      expect(updated.length).toBe(UPDATES)
+      expect(rows.length).toBe(eventsBefore.length + UPDATES)
+
+      const encoded = updated.map((row) => JSON.stringify(row.data))
+      for (const json of encoded) expect(json).not.toContain(PATCH_MARKER)
+
+      const projectionBytes = encoded.map((json) => Buffer.byteLength(json))
+      const maxBytes = Math.max(...projectionBytes)
+      // Each event must stay far below both one update's patch body and the 4 MiB encoded
+      // payload gate, independent of how large the patch is.
+      expect(maxBytes).toBeLessThan(patchBytesPerUpdate / 4)
+      expect(maxBytes).toBeLessThan(1024 * 1024)
+
+      // BUG-407-010 §13.3: cumulative event bytes must not multiply with the patch body —
+      // 20 bounded projections stay under a single update's patch total.
+      const cumulativeBytes = projectionBytes.reduce((total, bytes) => total + bytes, 0)
+      expect(cumulativeBytes).toBeLessThan(patchBytesPerUpdate)
+
+      for (const row of updated) {
+        const info = row.data["info"] as { summary?: { diffs?: Array<Record<string, unknown>> } }
+        const projected = info.summary?.diffs ?? []
+        expect(projected.length).toBe(MessageV2.ClientDiffLimits.files)
+        for (const item of projected) expect(Object.keys(item)).not.toContain("patch")
+      }
+
+      // The durable authority still owns the full summary; only the wire projection is bounded.
+      const stored = yield* db
+        .select({ data: MessageTable.data })
+        .from(MessageTable)
+        .where(eq(MessageTable.id, messageID))
+        .get()
+        .pipe(Effect.orDie)
+      expect(JSON.stringify(stored?.data)).toContain(PATCH_MARKER)
+    }),
+  { timeout: 30_000 },
+)
diff --git a/packages/deepagent-code/test/session/messages-pagination.test.ts b/packages/deepagent-code/test/session/messages-pagination.test.ts
index aec4eb69..ce49351f 100644
--- a/packages/deepagent-code/test/session/messages-pagination.test.ts
+++ b/packages/deepagent-code/test/session/messages-pagination.test.ts
@@ -3,6 +3,7 @@ import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { Database } from "@deepagent-code/core/database/database"
 import { Effect, Layer, Option } from "effect"
 import { Session as SessionNs } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { MessageV2 } from "../../src/session/message-v2"
 import { MessageID, PartID, type SessionID } from "../../src/session/schema"
 
@@ -14,7 +15,9 @@ import { ModelV2 } from "@deepagent-code/core/model"
 
 void Log.init({ print: false })
 
-const it = testEffect(Layer.mergeAll(SessionNs.defaultLayer, Database.defaultLayer))
+// QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+// writes hit the session FK.
+const it = testEffect(Layer.mergeAll(SessionNs.defaultLayer, SessionProjector.defaultLayer, Database.defaultLayer))
 
 const withSession = <A, E, R>(
   fn: (input: { session: SessionNs.Interface; sessionID: SessionID }) => Effect.Effect<A, E, R>,
diff --git a/packages/deepagent-code/test/session/multi-process-takeover.test.ts b/packages/deepagent-code/test/session/multi-process-takeover.test.ts
new file mode 100644
index 00000000..fd39c76f
--- /dev/null
+++ b/packages/deepagent-code/test/session/multi-process-takeover.test.ts
@@ -0,0 +1,359 @@
+import { afterEach, describe, expect, spyOn, test } from "bun:test"
+import fs from "node:fs"
+import os from "node:os"
+import path from "node:path"
+import { Database } from "@deepagent-code/core/database/database"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
+import { SessionForkIntentTable } from "@deepagent-code/core/session/sql"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { Effect, Layer } from "effect"
+import { and, eq, sql } from "drizzle-orm"
+import {
+  acquireDurableExecutorLease,
+  releaseDurableExecutorLease,
+  releaseDurableExecutorReservation,
+  reserveDurableExecutor,
+} from "@/session/durable-executor-lock"
+import { Session } from "@/session/session"
+import { MessageID, PartID, type SessionID } from "@/session/schema"
+import { Storage } from "@/storage/storage"
+import { RuntimeFlags } from "@/effect/runtime-flags"
+import { BackgroundJob } from "@/background/job"
+import { EventV2Bridge } from "@/event-v2-bridge"
+import { testInstanceStoreLayer } from "../fixture/fixture"
+import { testEffect } from "../lib/effect"
+
+const roots: string[] = []
+
+function temporaryRoot() {
+  const root = fs.mkdtempSync(path.join(os.tmpdir(), "deepagent-takeover-drill-"))
+  roots.push(root)
+  return root
+}
+
+afterEach(() => {
+  for (const root of roots.splice(0)) fs.rmSync(root, { recursive: true, force: true })
+})
+
+/** A pid that cannot exist on the host, simulating a holder that died via kill -9. */
+const deadPid = 999_999_999
+
+function killHolder(lease: NonNullable<ReturnType<typeof acquireDurableExecutorLease>>, staleMs: number) {
+  clearInterval(lease.heartbeat)
+  const expired = new Date(Date.now() - (staleMs + 1_000))
+  fs.utimesSync(lease.heartbeatPath, expired, expired)
+  const metadata = JSON.parse(fs.readFileSync(lease.metadataPath, "utf-8"))
+  fs.writeFileSync(lease.metadataPath, JSON.stringify({ ...metadata, pid: deadPid }))
+}
+
+describe("RISK-004 drill: durable executor lease takeover", () => {
+  test("a: kill -9 holder (dead pid + missed heartbeats) is quarantined and a successor acquires", () => {
+    const root = temporaryRoot()
+    const workspace = path.join(root, "workspace")
+    fs.mkdirSync(workspace)
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+
+    const first = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 20,
+      heartbeatMs: 60_000,
+    })
+    expect(first).toBeDefined()
+    killHolder(first!, 20)
+    releaseDurableExecutorReservation(workspace)
+
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+    const successor = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 20,
+      heartbeatMs: 60_000,
+    })
+    expect(successor).toBeDefined()
+    expect(successor!.token).not.toBe(first!.token)
+    expect(JSON.parse(fs.readFileSync(successor!.metadataPath, "utf-8")).token).toBe(successor!.token)
+    // Quarantine removes the dead holder's directory; only the successor's lock remains.
+    expect(fs.existsSync(successor!.lockPath)).toBe(true)
+    expect(fs.readdirSync(path.dirname(successor!.lockPath)).filter((name) => name.includes(".stale-"))).toEqual([])
+
+    releaseDurableExecutorLease(successor!)
+  })
+
+  test("b: expired lease held by a live pid is refused (fail-closed) and raises a structured warning", () => {
+    const root = temporaryRoot()
+    const workspace = path.join(root, "workspace")
+    fs.mkdirSync(workspace)
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+
+    const first = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 20,
+      heartbeatMs: 60_000,
+    })
+    expect(first).toBeDefined()
+    // Simulate a wedged holder: heartbeats stopped but the owner process (this one) is alive.
+    clearInterval(first!.heartbeat)
+    const expired = new Date(Date.now() - 1_000)
+    fs.utimesSync(first!.heartbeatPath, expired, expired)
+    releaseDurableExecutorReservation(workspace)
+
+    const warn = spyOn(console, "warn")
+    try {
+      expect(reserveDurableExecutor(workspace)).toBe(true)
+      const successor = acquireDurableExecutorLease({
+        directory: workspace,
+        mode: "durable",
+        stateRoot: root,
+        staleMs: 20,
+        heartbeatMs: 60_000,
+      })
+      // Fail-closed: a live holder is never replaced, even with an expired heartbeat.
+      expect(successor).toBeUndefined()
+      expect(fs.existsSync(first!.lockPath)).toBe(true)
+      expect(JSON.parse(fs.readFileSync(first!.metadataPath, "utf-8")).token).toBe(first!.token)
+      releaseDurableExecutorReservation(workspace)
+
+      expect(warn).toHaveBeenCalled()
+      const call = warn.mock.calls.find(([message]) => String(message).includes("fail-closed"))
+      expect(call).toBeDefined()
+      const detail = call![1] as Record<string, unknown>
+      expect(detail.workspace).toBe(workspace)
+      expect(detail.pid).toBe(process.pid)
+      expect(typeof detail.leaseAgeMs).toBe("number")
+      expect(detail.leaseAgeMs).toBeGreaterThanOrEqual(20)
+    } finally {
+      warn.mockRestore()
+    }
+
+    releaseDurableExecutorLease(first!)
+  })
+
+  test("c1: a displaced holder's heartbeat stops on token mismatch without touching the successor's files", async () => {
+    const root = temporaryRoot()
+    const workspace = path.join(root, "workspace")
+    fs.mkdirSync(workspace)
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+
+    const lease = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 60_000,
+      heartbeatMs: 25,
+    })
+    expect(lease).toBeDefined()
+    await Bun.sleep(60)
+    // A takeover replaces meta.json's token; the old holder's heartbeat must self-terminate.
+    const metadata = JSON.parse(fs.readFileSync(lease!.metadataPath, "utf-8"))
+    fs.writeFileSync(lease!.metadataPath, JSON.stringify({ ...metadata, token: "successor-token" }))
+    const before = fs.statSync(lease!.heartbeatPath).mtimeMs
+    await Bun.sleep(120)
+    const after = fs.statSync(lease!.heartbeatPath).mtimeMs
+    expect(after).toBe(before)
+
+    clearInterval(lease!.heartbeat)
+    releaseDurableExecutorLease(lease!)
+  })
+
+  test("c2: a displaced holder's release with a stale token never removes the successor's lock", () => {
+    const root = temporaryRoot()
+    const workspace = path.join(root, "workspace")
+    fs.mkdirSync(workspace)
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+
+    const first = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 20,
+      heartbeatMs: 60_000,
+    })!
+    killHolder(first, 20)
+    releaseDurableExecutorReservation(workspace)
+
+    expect(reserveDurableExecutor(workspace)).toBe(true)
+    const successor = acquireDurableExecutorLease({
+      directory: workspace,
+      mode: "durable",
+      stateRoot: root,
+      staleMs: 20,
+      heartbeatMs: 60_000,
+    })!
+    expect(successor.token).not.toBe(first.token)
+
+    // The killed holder wakes up and tries to release with its old token: rejected by token check.
+    releaseDurableExecutorLease(first)
+    expect(fs.existsSync(successor.lockPath)).toBe(true)
+    expect(JSON.parse(fs.readFileSync(successor.metadataPath, "utf-8")).token).toBe(successor.token)
+
+    releaseDurableExecutorLease(successor)
+    expect(fs.existsSync(successor.lockPath)).toBe(false)
+  })
+})
+
+const it = testEffect(
+  Layer.mergeAll(
+    Session.layer.pipe(
+      Layer.provide(Storage.defaultLayer),
+      Layer.provide(Database.defaultLayer),
+      Layer.provideMerge(EventV2Bridge.defaultLayer),
+      Layer.provide(SessionProjector.defaultLayer),
+      Layer.provide(RuntimeFlags.layer({ experimentalWorkspaces: false })),
+      Layer.provide(BackgroundJob.defaultLayer),
+    ),
+    Database.defaultLayer,
+    CrossSpawnSpawner.defaultLayer,
+    testInstanceStoreLayer,
+  ),
+)
+
+const addUser = Effect.fn("MultiProcessTakeover.addUser")(function* (sessionID: SessionID, text: string) {
+  const sessions = yield* Session.Service
+  const message = yield* sessions.updateMessage({
+    id: MessageID.ascending(),
+    sessionID,
+    role: "user",
+    time: { created: Date.now() },
+    agent: "test",
+    model: { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("test") },
+  })
+  yield* sessions.updatePart({
+    id: PartID.ascending(),
+    sessionID,
+    messageID: message.id,
+    type: "text",
+    text,
+  })
+  return message.id
+})
+
+const addAssistant = Effect.fn("MultiProcessTakeover.addAssistant")(function* (
+  sessionID: SessionID,
+  parentID: MessageID,
+  text: string,
+) {
+  const sessions = yield* Session.Service
+  const message = yield* sessions.updateMessage({
+    id: MessageID.ascending(),
+    sessionID,
+    role: "assistant",
+    time: { created: Date.now(), completed: Date.now() },
+    parentID,
+    modelID: ModelV2.ID.make("test"),
+    providerID: ProviderV2.ID.make("test"),
+    mode: "test",
+    agent: "test",
+    path: { cwd: "/", root: "/" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    finish: "stop",
+  })
+  yield* sessions.updatePart({
+    id: PartID.ascending(),
+    sessionID,
+    messageID: message.id,
+    type: "text",
+    text,
+  })
+  return message.id
+})
+
+describe("RISK-004 drill: fork delivery claim lease", () => {
+  it.instance("reclaims an expired fork delivery claim and fences the stale owner's writes", () =>
+    Effect.gen(function* () {
+      const sessions = yield* Session.Service
+      const { db } = yield* Database.Service
+      const parent = yield* sessions.create({})
+      const user = yield* addUser(parent.id, "takeover drill user")
+      yield* addAssistant(parent.id, user, "takeover drill assistant")
+      const intentID = "fork-takeover-lease-reclaim"
+      const staleOwner = "fork-delivery:stale-owner"
+      const triggerName = "test_fork_claim_lease_expiry"
+
+      // Crash the first claimant mid-delivery: every cursor commit aborts.
+      yield* db.run(sql`
+        CREATE TRIGGER ${sql.raw(triggerName)}
+        BEFORE UPDATE OF event_cursor ON session_fork_intent
+        WHEN NEW.intent_id = '${sql.raw(intentID)}'
+        BEGIN
+          SELECT RAISE(ABORT, 'test_fork_delivery_crash');
+        END
+      `)
+      const crashed = yield* sessions.fork({ sessionID: parent.id, intentID }).pipe(Effect.exit)
+      expect(crashed._tag).toBe("Failure")
+      yield* db.run(sql`DROP TRIGGER ${sql.raw(triggerName)}`)
+
+      const crashedIntent = yield* db
+        .select()
+        .from(SessionForkIntentTable)
+        .where(eq(SessionForkIntentTable.intent_id, intentID))
+        .get()
+        .pipe(Effect.orDie)
+      expect(crashedIntent?.state).toBe("committed")
+      expect(crashedIntent?.delivery_owner).toBeNull()
+
+      // Reconstruct the moment a claimant holds the claim but dies: publishing with a lease.
+      const setPublishing = (leaseExpiresAt: number) =>
+        db
+          .update(SessionForkIntentTable)
+          .set({ state: "publishing", delivery_owner: staleOwner, lease_expires_at: leaseExpiresAt, time_updated: Date.now() })
+          .where(eq(SessionForkIntentTable.intent_id, intentID))
+          .run()
+          .pipe(Effect.orDie)
+
+      // A live lease is never stolen: recoverForks leaves the claim untouched.
+      yield* setPublishing(Date.now() + 60_000)
+      yield* sessions.recoverForks()
+      const live = yield* db
+        .select()
+        .from(SessionForkIntentTable)
+        .where(eq(SessionForkIntentTable.intent_id, intentID))
+        .get()
+        .pipe(Effect.orDie)
+      expect(live?.state).toBe("publishing")
+      expect(live?.delivery_owner).toBe(staleOwner)
+
+      // Once the lease expires, a new claimant reclaims and completes delivery.
+      yield* setPublishing(Date.now() - 1_000)
+      yield* sessions.recoverForks()
+      const reclaimed = yield* db
+        .select()
+        .from(SessionForkIntentTable)
+        .where(eq(SessionForkIntentTable.intent_id, intentID))
+        .get()
+        .pipe(Effect.orDie)
+      expect(reclaimed?.state).toBe("complete")
+      expect(reclaimed?.delivery_owner).toBeNull()
+      expect(reclaimed?.lease_expires_at).toBeNull()
+      expect(reclaimed?.event_cursor).toBe(reclaimed?.event_count)
+      expect(reclaimed?.delivery_attempts).toBeGreaterThanOrEqual(2)
+
+      // The stale owner's cursor-advance predicate (intent + owner + state + cursor) matches nothing.
+      const staleWrite = yield* db
+        .update(SessionForkIntentTable)
+        .set({ time_updated: Date.now() })
+        .where(
+          and(
+            eq(SessionForkIntentTable.intent_id, intentID),
+            eq(SessionForkIntentTable.delivery_owner, staleOwner),
+            eq(SessionForkIntentTable.state, "publishing"),
+          ),
+        )
+        .returning({ intent_id: SessionForkIntentTable.intent_id })
+        .get()
+        .pipe(Effect.orDie)
+      expect(staleWrite).toBeUndefined()
+
+      const child = yield* sessions.get(reclaimed!.target_session_id)
+      yield* sessions.remove(child.id)
+      yield* sessions.remove(parent.id)
+    }),
+  )
+})
diff --git a/packages/deepagent-code/test/session/processor-effect.test.ts b/packages/deepagent-code/test/session/processor-effect.test.ts
index 28774f13..b191abd7 100644
--- a/packages/deepagent-code/test/session/processor-effect.test.ts
+++ b/packages/deepagent-code/test/session/processor-effect.test.ts
@@ -3,7 +3,7 @@ import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { PermissionV1 } from "@deepagent-code/core/v1/permission"
 import { Database } from "@deepagent-code/core/database/database"
 import { EventV2Bridge } from "@/event-v2-bridge"
-import { expect } from "bun:test"
+import { afterEach, expect } from "bun:test"
 import { tool } from "ai"
 import { Cause, Context, Deferred, Effect, Exit, Fiber, Layer, Scope, Stream } from "effect"
 import path from "path"
@@ -35,7 +35,7 @@ import { Snapshot } from "../../src/snapshot"
 import * as Log from "@deepagent-code/core/util/log"
 import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
 import { WorkspaceRef } from "../../src/effect/instance-ref"
-import { provideTmpdirInstance, provideTmpdirServer } from "../fixture/fixture"
+import { disposeAllInstances, provideTmpdirInstance, provideTmpdirServer } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 import { raw, reply, TestLLMServer } from "../lib/llm-server"
 import { RuntimeFlags } from "@/effect/runtime-flags"
@@ -67,6 +67,12 @@ import { Tool } from "../../src/tool/tool"
 
 void Log.init({ print: false })
 
+// Dispose any instances loaded into the process-wide AppRuntime instance
+// store so this file leaves no shared state for files that run after it.
+afterEach(async () => {
+  await disposeAllInstances()
+})
+
 const summary = Layer.succeed(
   SessionSummary.Service,
   SessionSummary.Service.of({
@@ -330,7 +336,7 @@ const noProgressLLM = Layer.sync(LLM.Service, () => {
     },
   })
 })
-const durableFlags = RuntimeFlags.layer({ experimentalEventSystem: true, activityAuthority: "durable" })
+const durableFlags = RuntimeFlags.layer({ experimentalEventSystem: true })
 const durablePermission = Permission.layer.pipe(
   Layer.provide(EventV2Bridge.defaultLayer),
   Layer.provide(Database.defaultLayer),
@@ -687,7 +693,7 @@ const admitActivity = Effect.fn("test.admitActivity")(function* (sessionID: Sess
     .run()
     .pipe(Effect.orDie)
   yield* db
-    .insert(SessionActivityAdmissionTable)
+    .insert(SessionActivityAdmissionTable) // fixture-exempt: seeds legacy-intent admission row for processor fixture
     .values({
       admission_id: admissionID,
       session_id: sessionID,
@@ -2123,7 +2129,6 @@ itNoProgress.live(
           const { processors, session, provider } = yield* boot()
           const database = yield* Database.Service
           const permission = yield* Permission.Service
-          expect((yield* RuntimeFlags.Service).activityAuthority).toBe("durable")
           const chat = yield* session.create({})
           const parent = yield* user(chat.id, "read stable.ts until it changes")
           const activityID = yield* admitActivity(chat.id, parent.id)
diff --git a/packages/deepagent-code/test/session/prompt-intent.test.ts b/packages/deepagent-code/test/session/prompt-intent.test.ts
index d1417a94..bb1686f7 100644
--- a/packages/deepagent-code/test/session/prompt-intent.test.ts
+++ b/packages/deepagent-code/test/session/prompt-intent.test.ts
@@ -704,7 +704,7 @@ describe("SessionPromptIntent", () => {
         delivery: "steer",
       })
       yield* db
-        .insert(SessionActivityAdmissionTable)
+        .insert(SessionActivityAdmissionTable) // fixture-exempt: seeds legacy-intent admission row for steer fixture
         .values({
           admission_id: admissionID,
           session_id: sessionID,
@@ -1520,7 +1520,7 @@ function preparingProviderReceipt(input: {
   readonly registryToolIDs: readonly string[]
 }) {
   return input.db
-    .insert(SessionToolRequestReceiptTable)
+    .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds preparing receipt for prompt-intent fixture
     .values({
       receipt_id: input.receiptID,
       request_ordinal: 1,
diff --git a/packages/deepagent-code/test/session/prompt.test.ts b/packages/deepagent-code/test/session/prompt.test.ts
index ae7704f3..c9f6740d 100644
--- a/packages/deepagent-code/test/session/prompt.test.ts
+++ b/packages/deepagent-code/test/session/prompt.test.ts
@@ -2,6 +2,8 @@ import { NodeFileSystem } from "@effect/platform-node"
 import { ConfigV1 } from "@deepagent-code/core/v1/config/config"
 import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
 import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
 import { LocationIdentityTable } from "@deepagent-code/core/context-federation/sql"
 import {
@@ -20,7 +22,7 @@ import { EventV2Bridge } from "@/event-v2-bridge"
 import { WorkspaceV2 } from "@deepagent-code/core/workspace"
 import { FetchHttpClient } from "effect/unstable/http"
 import { expect } from "bun:test"
-import { Cause, Deferred, Duration, Effect, Exit, Fiber, Layer } from "effect"
+import { Cause, DateTime, Deferred, Duration, Effect, Exit, Fiber, Layer, Logger, References, Stream } from "effect"
 import path from "path"
 import { fileURLToPath, pathToFileURL } from "url"
 import { NamedError } from "@deepagent-code/core/util/error"
@@ -68,6 +70,7 @@ import { SessionPromptIntent } from "../../src/session/prompt-intent"
 import { MessageID, PartID, SessionID } from "../../src/session/schema"
 import { SessionStatus } from "../../src/session/status"
 import { SessionV2 } from "@deepagent-code/core/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { SessionExecution } from "@deepagent-code/core/session/execution"
 import { SessionMessage } from "@deepagent-code/core/session/message"
 import { Prompt } from "@deepagent-code/core/session/prompt"
@@ -89,6 +92,8 @@ import { RepositoryCache } from "../../src/reference/repository-cache"
 import { TestInstance, testInstanceStoreLayer, tmpdirScoped } from "../fixture/fixture"
 import { InstanceStore } from "@/project/instance-store"
 import { AgentGateway } from "@deepagent-code/core/agent-gateway"
+import { Global } from "@deepagent-code/core/global"
+import { LLMClient, RequestExecutor, WebSocketExecutor } from "@deepagent-code/llm/route"
 import { createHash } from "node:crypto"
 import { symlink } from "node:fs/promises"
 import { awaitWithTimeout, pollWithTimeout, testEffect } from "../lib/effect"
@@ -283,8 +288,41 @@ type PromptLayerOptions = {
   flags?: Partial<RuntimeFlags.Info>
   federation?: SessionFederatedContext.Interface
   plugin?: Plugin.Interface
+  // FEAT-010: lets a test swap the V2 session layer (default: SessionV2.defaultLayer with noop
+  // execution) so the V2 owner branch of loop() can be observed without a live V2 runner.
+  sessionV2?: Layer.Layer<SessionV2.Service, never, never>
 }
 
+// UPD-002: LLM.defaultLayer hardwires RuntimeFlags.defaultLayer, which would
+// freeze default flags (e.g. experimentalNativeLlm) for every instance. Mirror
+// the default wiring over `LLM.layer` so each harness's runtimeFlags wins.
+const testLLMLayer = (runtimeFlags: Layer.Layer<RuntimeFlags.Service>) =>
+  LLM.layer.pipe(
+    Layer.provide(Auth.defaultLayer),
+    Layer.provide(Config.defaultLayer),
+    Layer.provide(ProviderSvc.defaultLayer),
+    Layer.provide(Plugin.defaultLayer),
+    Layer.provide(
+      Layer.mergeAll(
+        AgentGateway.layer({ enabled: true, runsDir: Global.Path.agent.runs }),
+        LLMClient.layer.pipe(Layer.provide(Layer.mergeAll(RequestExecutor.defaultLayer, WebSocketExecutor.layer))),
+      ),
+    ),
+    Layer.provide(runtimeFlags),
+  )
+
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
 function makePrompt(input?: PromptLayerOptions) {
   const runtimeFlags = RuntimeFlags.layer({
     experimentalEventSystem: true,
@@ -295,7 +333,7 @@ function makePrompt(input?: PromptLayerOptions) {
   const deps = Layer.mergeAll(
     Session.defaultLayer,
     Snapshot.defaultLayer,
-    LLM.defaultLayer,
+    testLLMLayer(runtimeFlags),
     Env.defaultLayer,
     AgentSvc.defaultLayer,
     Command.defaultLayer,
@@ -309,7 +347,7 @@ function makePrompt(input?: PromptLayerOptions) {
     FSUtil.defaultLayer,
     BackgroundJob.defaultLayer,
     status,
-    Database.defaultLayer,
+    database,
     EventV2Bridge.defaultLayer,
     PromptEpoch.defaultLayer,
   ).pipe(Layer.provideMerge(infra))
@@ -350,6 +388,7 @@ function makePrompt(input?: PromptLayerOptions) {
         )
   const compact = SessionCompaction.layer.pipe(
     Layer.provide(runtimeFlags),
+    Layer.provide(RequestExecutor.defaultLayer),
     Layer.provideMerge(proc),
     Layer.provideMerge(deps),
   )
@@ -357,7 +396,7 @@ function makePrompt(input?: PromptLayerOptions) {
   // `deps`) so drained steers are visible to the loop's history reads.
   const steer = SessionSteer.layer.pipe(Layer.provideMerge(deps))
   const promptLayer = SessionPrompt.layer.pipe(
-    Layer.provide(SessionV2.defaultLayer),
+    Layer.provide(input?.sessionV2 ?? SessionV2.defaultLayer),
     Layer.provide(SessionProviderOwner.layer.pipe(Layer.provide(deps))),
     Layer.provide(testInstanceStoreLayer),
     Layer.provide(SessionRevert.defaultLayer),
@@ -427,6 +466,12 @@ const worldStateCompactionDisabled = testEffect(
   makeHttp({ flags: { softLandingCompaction: false, worldStateReinjection: false } }),
 )
 const noLLMServer = testEffect(makeHttpNoLLMServer())
+// UPD-002: native runtime ON so a Responses+format-capable family can take the
+// wire structured-output path end to end.
+const wireStructuredOutput = testEffect(makeHttp({ flags: { experimentalNativeLlm: true } }))
+// UPD-002: same provider family but default (AI SDK) runtime — asserts the
+// synthetic StructuredOutput path is retained when the wire path is unavailable.
+const wireCapableAiSdk = testEffect(makeHttp())
 const raceNoLLMServer = testEffect(makeHttpNoLLMServer({ processor: "blocking" }))
 const mutatingProviderHistoryTrigger: Plugin.Interface["trigger"] = (name, _input, output) =>
   Effect.sync(() => {
@@ -462,7 +507,7 @@ const federationAdapter = {
       if (!identity) return yield* Effect.die("prompt federation identity unavailable")
       const releasedKnowledgeBinding = DeepAgentReleasedSnapshot.binding(input.releasedKnowledgeSelection)
       yield* db
-        .insert(SessionActivityTable)
+        .insert(SessionActivityTable) // fixture-exempt: seeds active activity inside federation adapter stub
         .values({
           activity_id: "activity_prompt_adapter",
           session_id: input.session.id,
@@ -607,6 +652,7 @@ const federationAdapter = {
     Effect.sync(() => {
       federationTrace.push(`activity:${state}`)
     }),
+  settleOrphanedActivities: () => Effect.succeed(0),
   replayIndeterminate: () => Effect.die("not used"),
   releasedKnowledgeForActiveSession: () => Effect.succeed(undefined),
 } as unknown as SessionFederatedContext.Interface
@@ -627,6 +673,9 @@ const prepareFailureFederated = testEffect(
       contextFederationShadow: true,
       locationIndexesV2Shadow: true,
       contextProjectionV2: true,
+      // QUAL-006: pin tools OFF — this instance verifies the projection-prepare degradation path in
+      // isolation; the shipped default (tools ON) is covered by runtime-flags and the federated suite.
+      contextQueryToolsV2: false,
     },
     federation: {
       ...federationAdapter,
@@ -639,6 +688,10 @@ const shadowFederated = testEffect(
     flags: {
       contextFederationShadow: true,
       locationIndexesV2Shadow: true,
+      // QUAL-006: pin model-facing owners OFF — this instance verifies shadow-only behavior; the
+      // shipped defaults (both ON) are covered by runtime-flags and the federated suite.
+      contextProjectionV2: false,
+      contextQueryToolsV2: false,
     },
     federation: federationAdapter,
   }),
@@ -716,6 +769,50 @@ function providerCfgWithContext(url: string, context: number) {
   }
 }
 
+// UPD-002: a Responses-family, wire-format-capable provider (@ai-sdk/openai).
+// Official provider IDs ignore config.provider overrides, so this uses a
+// custom id; the `deepagent-code*` prefix keeps the native runtime status gate
+// happy while the npm package drives Responses wire lowering.
+// The baseline `test` provider stays registered (title/small-model paths), and
+// the build agent is pinned to the wire-capable model.
+function wireProviderCfg(url: string) {
+  const base = providerCfg(url)
+  return {
+    ...base,
+    agent: {
+      build: { model: "deepagent-code-wire/test-model" },
+    },
+    provider: {
+      ...base.provider,
+      "deepagent-code-wire": {
+        name: "Wire Test",
+        id: "deepagent-code-wire",
+        env: [],
+        npm: "@ai-sdk/openai",
+        models: {
+          "test-model": {
+            id: "test-model",
+            name: "Test Model",
+            attachment: false,
+            reasoning: false,
+            temperature: false,
+            tool_call: true,
+            release_date: "2025-01-01",
+            limit: { context: 100000, output: 10000 },
+            cost: { input: 0, output: 0 },
+            options: {},
+          },
+        },
+        options: {
+          apiKey: "test-key",
+          baseURL: url,
+          maxRetries: 0,
+        },
+      },
+    },
+  }
+}
+
 const writeText = Effect.fn("test.writeText")(function* (file: string, text: string) {
   const fs = yield* FSUtil.Service
   yield* fs.writeWithDirs(file, text)
@@ -1383,6 +1480,103 @@ it.instance("fingerprints the final persisted structured assistant", () =>
   }),
 )
 
+// UPD-002: wire-level structured output on a Responses + format-capable family.
+wireStructuredOutput.instance("delivers json_schema output through wire text.format", () =>
+  Effect.gen(function* () {
+    const { llm } = yield* useServerConfig(wireProviderCfg)
+    const prompt = yield* SessionPrompt.Service
+    const sessions = yield* Session.Service
+    const chat = yield* sessions.create({
+      title: "Wire structured output",
+      permission: [{ permission: "*", pattern: "*", action: "allow" }],
+    })
+    yield* llm.text('{"answer": 4}')
+    yield* prompt.prompt({
+      sessionID: chat.id,
+      agent: "build",
+      noReply: true,
+      format: {
+        type: "json_schema",
+        schema: {
+          type: "object",
+          properties: { answer: { type: "number" } },
+          required: ["answer"],
+        },
+        retryCount: 1,
+      },
+      parts: [{ type: "text", text: "Return the answer." }],
+    })
+
+    const result = yield* prompt.loop({ sessionID: chat.id })
+
+    const wireRequest = (yield* llm.hits).find((item) => JSON.stringify(item.body).includes("Return the answer"))
+    expect(wireRequest).toBeDefined()
+    const body = wireRequest!.body
+    // Wire assertions: Responses endpoint, text.format lowered, NO synthesized
+    // StructuredOutput tool, and tool_choice is not forced to "required".
+    expect(wireRequest!.url.pathname).toBe("/v1/responses")
+    const text = body.text as Record<string, unknown> | undefined
+    expect(text?.format).toMatchObject({ type: "json_schema", name: "structured_output" })
+    expect((text?.format as Record<string, unknown> | undefined)?.schema).toMatchObject({
+      properties: { answer: { type: "number" } },
+    })
+    const tools = Array.isArray(body.tools) ? (body.tools as Array<Record<string, unknown>>) : []
+    expect(tools.some((tool) => tool.name === "StructuredOutput")).toBe(false)
+    expect(body.tool_choice).not.toBe("required")
+
+    expect(result.info.role).toBe("assistant")
+    if (result.info.role === "assistant") {
+      expect(result.info.structured).toEqual({ answer: 4 })
+      expect(result.info.finish).toBe("stop")
+    }
+  }),
+)
+
+// UPD-002: same wire-capable family but native runtime OFF ⇒ the AI SDK path
+// cannot carry the wire format, so the synthetic StructuredOutput tool stays.
+wireCapableAiSdk.instance("keeps the synthetic StructuredOutput path when the runtime is AI SDK", () =>
+  Effect.gen(function* () {
+    const { llm } = yield* useServerConfig(wireProviderCfg)
+    const prompt = yield* SessionPrompt.Service
+    const sessions = yield* Session.Service
+    const chat = yield* sessions.create({
+      title: "Synthetic structured output",
+      permission: [{ permission: "*", pattern: "*", action: "allow" }],
+    })
+    yield* prompt.prompt({
+      sessionID: chat.id,
+      agent: "build",
+      noReply: true,
+      format: {
+        type: "json_schema",
+        schema: {
+          type: "object",
+          properties: { answer: { type: "number" } },
+          required: ["answer"],
+        },
+        retryCount: 1,
+      },
+      parts: [{ type: "text", text: "Return the answer." }],
+    })
+    yield* llm.tool("StructuredOutput", { answer: 4 })
+
+    const result = yield* prompt.loop({ sessionID: chat.id })
+
+    const syntheticRequest = (yield* llm.hits).find((item) => JSON.stringify(item.body).includes("Return the answer"))
+    expect(syntheticRequest).toBeDefined()
+    const body = syntheticRequest!.body
+    const tools = Array.isArray(body.tools) ? (body.tools as Array<Record<string, unknown>>) : []
+    expect(tools.some((tool) => tool.name === "StructuredOutput")).toBe(true)
+    expect(body.tool_choice).toBe("required")
+
+    expect(result.info.role).toBe("assistant")
+    if (result.info.role === "assistant") {
+      expect(result.info.structured).toEqual({ answer: 4 })
+      expect(result.info.finish).toBe("tool-calls")
+    }
+  }),
+)
+
 providerHistoryTransform.instance("isolates provider message transforms from durable history authority", () =>
   Effect.gen(function* () {
     const { llm } = yield* useServerConfig(providerCfg)
@@ -1712,7 +1906,7 @@ it.instance("recovers only compaction continuations that were durably not dispat
           .run()
           .pipe(Effect.orDie)
         yield* db
-          .insert(SessionToolRequestReceiptTable)
+          .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds preparing receipt with stale owner for recovery fixture
           .values({
             receipt_id: receiptID,
             request_ordinal: 1,
@@ -4336,6 +4530,47 @@ unix(
   30_000,
 )
 
+// BUG-407-008 §7.1 deterministic regressions: the computed activity-progress projection must be
+// derived from the durable progress authority on read, independent of whether the owning assistant
+// message carries a text part (reasoning-only / tool-only turns still project progress).
+unix(
+  "BUG-407-008 #5: a tool-only assistant turn still yields a computed activityProgress projection",
+  () =>
+    Effect.gen(function* () {
+      const { dir, llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const chat = yield* sessions.create({
+        title: "tool-only computed projection",
+        permission: [{ permission: "*", pattern: "*", action: "allow" }],
+      })
+      yield* prompt.prompt({
+        sessionID: chat.id,
+        agent: "build",
+        noReply: true,
+        parts: [{ type: "text", text: "run the tool" }],
+      })
+      yield* llm.tool("bash", { command: "echo progress-marker", description: "emit", workdir: path.resolve(dir) })
+      yield* llm.text("done")
+      yield* prompt.loop({ sessionID: chat.id })
+
+      const msgs = yield* MessageV2.filterCompactedEffect(chat.id)
+      const withTool = msgs.filter(
+        (item) => item.info.role === "assistant" && item.parts.some((p) => p.type === "tool"),
+      )
+      expect(withTool.length).toBeGreaterThan(0)
+      // The assistant message that owns the tool call carries a computed activityProgress derived
+      // from the durable progress authority — even though it may have no text part of its own.
+      const projected = withTool.find((item) => (item.info as SessionV1.Assistant).activityProgress)
+      expect(projected).toBeDefined()
+      const progress = projected ? (projected.info as SessionV1.Assistant).activityProgress : undefined
+      expect(progress?.revision).toBeGreaterThanOrEqual(0)
+      expect(progress?.activityID).toBeTruthy()
+    }),
+  { git: true },
+  30_000,
+)
+
 unixNoLLMServer(
   "cancel interrupts loop queued behind shell",
   () =>
@@ -5520,3 +5755,178 @@ noLLMServer.instance(
     }),
   30_000,
 )
+
+// FEAT-010: V2 owner fork observability lock-in. The fork logic itself is unchanged — these tests
+// pin the observation seams: (1) when the V2 owner branch is selected, the selection/receipt
+// correlation logs appear and the V2 runner is invoked; (2) the legacy path is unaffected and logs
+// owner=legacy; (3) the fork slog always carries the decision-factor snapshot.
+type CapturedLog = { message: string; level: string; annotations: Record<string, unknown> }
+const captureLogs = <A, E, R>(sink: CapturedLog[], fx: Effect.Effect<A, E, R>) =>
+  fx.pipe(
+    Effect.provide(
+      Logger.layer(
+        [
+          Logger.make(({ message, logLevel, fiber }) => {
+            sink.push({
+              message: String(message),
+              level: logLevel,
+              annotations: { ...fiber.getRef(References.CurrentLogAnnotations) },
+            })
+          }),
+        ],
+        { mergeWithExisting: false },
+      ),
+    ),
+  )
+
+const v2OwnerResumeCalls: string[] = []
+// FEAT-010: the stub replaces SessionV2.Service only; SessionProjector.defaultLayer is merged back
+// in because the default SessionV2 layer stack carries it, and it is the subscriber that persists
+// session/message rows from events (without it, Session.get fails with "Session not found").
+const v2OwnerStubLayer = Layer.merge(
+  Layer.succeed(
+    SessionV2.Service,
+    SessionV2.Service.of({
+      list: () => Effect.succeed([]),
+      create: () => Effect.die("v2 owner stub: create unused"),
+      get: () => Effect.die("v2 owner stub: get unused"),
+      messages: () => Effect.succeed([]),
+      message: () => Effect.succeed(undefined),
+      context: () =>
+        Effect.succeed([
+          new SessionMessage.Assistant({
+            id: SessionMessage.ID.create(),
+            type: "assistant",
+            agent: "build",
+            model: { id: ModelV2.ID.make("test-model"), providerID: ProviderV2.ID.make("test") },
+            content: [
+              new SessionMessage.AssistantText({ type: "text", id: "text-v2-owner-stub", text: "v2 owner reply" }),
+            ],
+            finish: "stop",
+            cost: 0,
+            time: { created: DateTime.makeUnsafe(Date.now()), completed: DateTime.makeUnsafe(Date.now()) },
+          }),
+        ]),
+      events: () => Stream.empty,
+      switchAgent: () => Effect.die("v2 owner stub: switchAgent unused"),
+      switchModel: () => Effect.die("v2 owner stub: switchModel unused"),
+      prompt: () => Effect.die("v2 owner stub: prompt unused"),
+      shell: () => Effect.die("v2 owner stub: shell unused"),
+      skill: () => Effect.die("v2 owner stub: skill unused"),
+      compact: () => Effect.die("v2 owner stub: compact unused"),
+      wait: () => Effect.die("v2 owner stub: wait unused"),
+      resume: (sessionID) =>
+        Effect.sync(() => {
+          v2OwnerResumeCalls.push(sessionID)
+        }),
+      interrupt: () => Effect.void,
+    }),
+  ),
+  SessionProjector.defaultLayer,
+)
+const v2Owner = testEffect(makeHttp({ flags: { coreV2ExecutionOwner: true }, sessionV2: v2OwnerStubLayer }))
+
+v2Owner.instance(
+  "V2 owner branch selected executes the V2 runner and emits selection + receipt-correlation logs",
+  () =>
+    Effect.gen(function* () {
+      const { llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const chat = yield* sessions.create({
+        title: "V2 owner fork",
+        permission: [{ permission: "*", pattern: "*", action: "allow" }],
+      })
+      yield* prompt.prompt({
+        sessionID: chat.id,
+        agent: "build",
+        noReply: true,
+        parts: [{ type: "text", text: "hello" }],
+      })
+      v2OwnerResumeCalls.length = 0
+      const logs: CapturedLog[] = []
+
+      const result = yield* captureLogs(logs, prompt.loop({ sessionID: chat.id }))
+
+      // The V2 owner branch was selected AND executed: the V2 runner resume fired once, the
+      // legacy LLM path was never touched, and the projected assistant came from the V2 context.
+      expect(v2OwnerResumeCalls).toEqual([chat.id])
+      expect(yield* llm.hits).toHaveLength(0)
+      expect(result.info.role).toBe("assistant")
+      expect(result.parts.some((part) => part.type === "text" && part.text === "v2 owner reply")).toBe(true)
+
+      // Fork slog: info level, owner selection + decision-factor snapshot.
+      const forks = logs.filter((entry) => entry.message === "v2 owner fork")
+      expect(forks.length).toBeGreaterThan(0)
+      for (const fork of forks) {
+        expect(fork.level).toBe("Info")
+        expect(fork.annotations).toMatchObject({
+          "session.id": chat.id,
+          owner: "v2",
+          releaseQualified: true,
+          coreV2ExecutionOwnerFlag: true,
+          coreV2ExecutionOwnerEnabled: true,
+          parityCampaign: "none",
+          ownerCampaign: "release",
+        })
+      }
+      // Selection log with the owner=selection reason + durable receipt correlation log.
+      expect(
+        logs.some(
+          (entry) =>
+            entry.message === "v2 owner branch selected" &&
+            entry.annotations.owner === "v2" &&
+            entry.annotations.reason === "rollout_gate_open",
+        ),
+      ).toBe(true)
+      expect(logs.some((entry) => entry.message === "v2 owner turn receipt")).toBe(true)
+    }),
+  30_000,
+)
+
+it.instance(
+  "legacy loop is unaffected by the fork observation and logs owner=legacy with decision factors",
+  () =>
+    Effect.gen(function* () {
+      const { llm } = yield* useServerConfig(providerCfg)
+      const prompt = yield* SessionPrompt.Service
+      const sessions = yield* Session.Service
+      const chat = yield* sessions.create({
+        title: "Legacy fork",
+        permission: [{ permission: "*", pattern: "*", action: "allow" }],
+      })
+      yield* prompt.prompt({
+        sessionID: chat.id,
+        agent: "build",
+        noReply: true,
+        parts: [{ type: "text", text: "hello" }],
+      })
+      yield* llm.text("world")
+      v2OwnerResumeCalls.length = 0
+      const logs: CapturedLog[] = []
+
+      const result = yield* captureLogs(logs, prompt.loop({ sessionID: chat.id }))
+
+      // Legacy behavior intact: the turn ran through the legacy provider and returned the reply.
+      expect(result.info.role).toBe("assistant")
+      expect(result.parts.some((part) => part.type === "text" && part.text === "world")).toBe(true)
+      expect(yield* llm.hits).toHaveLength(1)
+      expect(v2OwnerResumeCalls).toHaveLength(0)
+
+      // Fork slog still fires with the decision-factor snapshot, selecting legacy.
+      const forks = logs.filter((entry) => entry.message === "v2 owner fork")
+      expect(forks.length).toBeGreaterThan(0)
+      for (const fork of forks) {
+        expect(fork.level).toBe("Info")
+        expect(fork.annotations).toMatchObject({
+          "session.id": chat.id,
+          owner: "legacy",
+          releaseQualified: true,
+          coreV2ExecutionOwnerFlag: false,
+          coreV2ExecutionOwnerEnabled: false,
+        })
+      }
+      expect(logs.some((entry) => entry.message === "v2 owner branch selected")).toBe(false)
+    }),
+  30_000,
+)
diff --git a/packages/deepagent-code/test/session/provider-receipt-recovery.test.ts b/packages/deepagent-code/test/session/provider-receipt-recovery.test.ts
index 1d490bb6..e20e3076 100644
--- a/packages/deepagent-code/test/session/provider-receipt-recovery.test.ts
+++ b/packages/deepagent-code/test/session/provider-receipt-recovery.test.ts
@@ -636,7 +636,7 @@ function seed(db: Database.Interface["db"], options: { readonly releaseStaleOwne
       })
       .run()
     yield* db
-      .insert(SessionActivityTable)
+      .insert(SessionActivityTable) // fixture-exempt: seeds active activity for receipt-recovery fixture
       .values({
         activity_id: activityId,
         session_id: sessionId,
@@ -680,7 +680,7 @@ function seed(db: Database.Interface["db"], options: { readonly releaseStaleOwne
       })
       .run()
     yield* db
-      .insert(SessionProviderAttemptTable)
+      .insert(SessionProviderAttemptTable) // fixture-exempt: seeds attempt batch for receipt-recovery fixture
       .values([attempt(0), attempt(1), attempt(2), attempt(3), attempt(4)])
       .run()
     yield* Effect.forEach([0, 1, 2, 3], (providerTurnSeq) =>
@@ -694,7 +694,7 @@ function seed(db: Database.Interface["db"], options: { readonly releaseStaleOwne
         .run(),
     )
     yield* db
-      .insert(SessionToolRequestReceiptTable)
+      .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds receipt batch for receipt-recovery fixture
       .values([receipt(0), receipt(1), receipt(2), receipt(3)])
       .run()
     yield* db
diff --git a/packages/deepagent-code/test/session/remote-compact.test.ts b/packages/deepagent-code/test/session/remote-compact.test.ts
new file mode 100644
index 00000000..3c4da1f5
--- /dev/null
+++ b/packages/deepagent-code/test/session/remote-compact.test.ts
@@ -0,0 +1,374 @@
+import { describe, expect } from "bun:test"
+import { RequestExecutor } from "@deepagent-code/llm/route"
+import { Effect, Layer, Ref } from "effect"
+import { HttpClient, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
+import type { ModelMessage } from "ai"
+import { join } from "path"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
+import type { Provider } from "@/provider/provider"
+import { RemoteCompact } from "@/session/remote-compact"
+import { testEffect } from "../lib/effect"
+import { TestInstance } from "../fixture/fixture"
+
+const JSON_HEADERS = { "content-type": "application/json" } as const
+
+const openaiModel: Provider.Model = {
+  id: ModelV2.ID.make("gpt-5-mini"),
+  providerID: ProviderV2.ID.make("openai"),
+  api: {
+    id: "gpt-5-mini",
+    url: "https://api.openai.test/v1",
+    npm: "@ai-sdk/openai",
+  },
+  name: "GPT-5 Mini",
+  capabilities: {
+    temperature: true,
+    reasoning: true,
+    attachment: true,
+    toolcall: true,
+    input: { text: true, audio: false, image: true, video: false, pdf: false },
+    output: { text: true, audio: false, image: false, video: false, pdf: false },
+    interleaved: false,
+  },
+  cost: { input: 0, output: 0, cache: { read: 0, write: 0 } },
+  limit: { context: 128_000, input: 128_000, output: 32_000 },
+  status: "active",
+  options: {},
+  headers: {},
+  release_date: "2026-01-01",
+}
+
+const deepseekModel: Provider.Model = {
+  ...openaiModel,
+  id: ModelV2.ID.make("deepseek-chat"),
+  providerID: ProviderV2.ID.make("deepseek"),
+  api: { id: "deepseek-chat", url: "https://api.deepseek.com/v1", npm: "@ai-sdk/openai-compatible" },
+  name: "DeepSeek Chat",
+}
+
+const anthropicModel: Provider.Model = {
+  ...openaiModel,
+  id: ModelV2.ID.make("claude-sonnet-4"),
+  providerID: ProviderV2.ID.make("anthropic"),
+  api: { id: "claude-sonnet-4", url: "https://api.anthropic.com", npm: "@ai-sdk/anthropic" },
+  name: "Claude Sonnet 4",
+}
+
+const providerInfo: Provider.Info = {
+  id: ProviderV2.ID.make("openai"),
+  name: "OpenAI",
+  source: "config",
+  env: ["OPENAI_API_KEY"],
+  options: { apiKey: "test-openai-key" },
+  models: {},
+}
+
+const history: ModelMessage[] = [
+  { role: "user", content: [{ type: "text", text: "Fix the failing test." }] },
+  { role: "assistant", content: [{ type: "text", text: "Looking into it." }] },
+]
+
+const input = (model: Provider.Model, sessionID = "ses_remote_compact"): RemoteCompact.RemoteCompactionInput => ({
+  sessionID,
+  model,
+  provider: providerInfo,
+  auth: undefined,
+  messages: history,
+})
+
+type Handler = (handlerInput: {
+  readonly request: HttpClientRequest.HttpClientRequest
+  readonly text: string
+  readonly respond: (body: ConstructorParameters<typeof Response>[0], init?: ResponseInit) => HttpClientResponse.HttpClientResponse
+}) => Effect.Effect<HttpClientResponse.HttpClientResponse>
+
+const handlerLayer = (handler: Handler): Layer.Layer<HttpClient.HttpClient> =>
+  Layer.succeed(
+    HttpClient.HttpClient,
+    HttpClient.make((request) =>
+      Effect.gen(function* () {
+        const web = yield* HttpClientRequest.toWeb(request).pipe(Effect.orDie)
+        const text = yield* Effect.promise(() => web.text())
+        return yield* handler({
+          request,
+          text,
+          respond: (body, init) => HttpClientResponse.fromWeb(request, new Response(body, init)),
+        })
+      }),
+    ),
+  )
+
+const compactLayer = (handler: Handler): Layer.Layer<RequestExecutor.Service> =>
+  Layer.provideMerge(RequestExecutor.layer, handlerLayer(handler))
+
+// Fail-over must be immediate: never burn a status-retry budget on compact.
+const noRetries = Effect.provideService(RequestExecutor.CurrentRetryLimit, 0)
+
+const compactResponse = (encryptedContent: string) =>
+  JSON.stringify({ output: [{ type: "compaction", id: "cmp_1", encrypted_content: encryptedContent }] })
+
+// Every test provides its own executor layer: layers are memoized by identity
+// during build, so a shared describe-level layer would leak its HttpClient
+// binding into tests that expect a different handler.
+const noHttpLayer = compactLayer(() => Effect.die(new Error("no HTTP expected")))
+
+describe("remote compaction capability branch", () => {
+  // `live` keeps the real clock so retry backoff (should it ever fire) never
+  // stalls on TestClock.
+  const it = testEffect(Layer.empty)
+
+  it.live("routes canonical OpenAI to the server-side path", () =>
+    Effect.gen(function* () {
+      expect(RemoteCompact.supportsRemoteCompaction(openaiModel)).toBe(true)
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction(input(openaiModel)).pipe(
+        Effect.provide(
+          compactLayer(({ respond }) => Effect.succeed(respond(compactResponse("enc-openai"), { headers: JSON_HEADERS }))),
+        ),
+        noRetries,
+      )
+      expect(outcome).toEqual({ used: "remote", encryptedContent: "enc-openai" })
+      expect(RemoteCompact.EncryptedContentStore.get("ses_remote_compact")).toBe("enc-openai")
+    }),
+  )
+
+  it.live("routes deepseek (verified /responses/compact support) to the server-side path", () =>
+    Effect.gen(function* () {
+      expect(RemoteCompact.supportsRemoteCompaction(deepseekModel)).toBe(true)
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction(input(deepseekModel, "ses_deepseek")).pipe(
+        Effect.provide(
+          compactLayer(({ respond }) => Effect.succeed(respond(compactResponse("enc-deepseek"), { headers: JSON_HEADERS }))),
+        ),
+        noRetries,
+      )
+      expect(outcome).toEqual({ used: "remote", encryptedContent: "enc-deepseek" })
+      expect(RemoteCompact.EncryptedContentStore.get("ses_deepseek")).toBe("enc-deepseek")
+    }),
+  )
+
+  it.live("routes anthropic to the local path without HTTP", () =>
+    Effect.gen(function* () {
+      expect(RemoteCompact.supportsRemoteCompaction(anthropicModel)).toBe(false)
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction(input(anthropicModel, "ses_anthropic")).pipe(
+        Effect.provide(noHttpLayer),
+        noRetries,
+      )
+      expect(outcome.used).toBe("local")
+    }),
+  )
+
+  it.live("falls back to local when no API key is configured", () =>
+    Effect.gen(function* () {
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction({
+        ...input(openaiModel, "ses_no_key"),
+        provider: { ...providerInfo, options: {} },
+      }).pipe(
+        Effect.provide(noHttpLayer),
+        noRetries,
+      )
+      expect(outcome.used).toBe("local")
+      expect(outcome.used === "local" && outcome.reason).toContain("API key")
+    }),
+  )
+})
+
+describe("remote compaction fail-over", () => {
+  const it = testEffect(Layer.empty)
+
+  it.live("fails over to local on provider HTTP errors", () =>
+    RemoteCompact.attemptRemoteCompaction(input(openaiModel, "ses_http_fail")).pipe(
+      Effect.provide(
+        compactLayer(({ respond }) =>
+          Effect.succeed(respond(JSON.stringify({ error: "boom" }), { status: 500, headers: JSON_HEADERS })),
+        ),
+      ),
+      noRetries,
+      Effect.tap((outcome) =>
+        Effect.sync(() => {
+          expect(outcome.used).toBe("local")
+          expect(RemoteCompact.EncryptedContentStore.get("ses_http_fail")).toBeUndefined()
+        }),
+      ),
+    ),
+  )
+
+  it.live("fails over to local when the compact payload is malformed", () =>
+    RemoteCompact.attemptRemoteCompaction(input(openaiModel, "ses_bad_payload")).pipe(
+      Effect.provide(compactLayer(({ respond }) => Effect.succeed(respond("not-json", { headers: JSON_HEADERS })))),
+      noRetries,
+      Effect.tap((outcome) =>
+        Effect.sync(() => {
+          expect(outcome.used).toBe("local")
+        }),
+      ),
+    ),
+  )
+
+  it.live("fails over to local when no compaction item is returned", () =>
+    RemoteCompact.attemptRemoteCompaction(input(openaiModel, "ses_no_item")).pipe(
+      Effect.provide(
+        compactLayer(({ respond }) => Effect.succeed(respond(JSON.stringify({ output: [] }), { headers: JSON_HEADERS }))),
+      ),
+      noRetries,
+      Effect.tap((outcome) =>
+        Effect.sync(() => {
+          expect(outcome.used).toBe("local")
+        }),
+      ),
+    ),
+  )
+
+  // §4.3 same-provenance guard: a blob minted by another provider can never be
+  // replayed — drop it and fall back to local summarization, without HTTP.
+  it.live("clears a foreign-provider blob and fails over to local (§4.3 same source)", () =>
+    Effect.gen(function* () {
+      RemoteCompact.EncryptedContentStore.set("ses_cross_provider", "enc-foreign", { providerID: "deepseek" })
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction(input(openaiModel, "ses_cross_provider")).pipe(
+        Effect.provide(noHttpLayer),
+        noRetries,
+      )
+      expect(outcome.used).toBe("local")
+      expect(outcome.used === "local" && outcome.reason).toContain("belongs to provider deepseek")
+      expect(RemoteCompact.EncryptedContentStore.get("ses_cross_provider")).toBeUndefined()
+    }),
+  )
+
+  // §4.3 capability loss: switching to a model whose route does not serve
+  // /responses/compact invalidates any staged blob so it can never be replayed.
+  it.live("clears a stale blob when the capability probe is false (§4.3)", () =>
+    Effect.gen(function* () {
+      RemoteCompact.EncryptedContentStore.set("ses_capability_lost", "enc-stale")
+      const outcome = yield* RemoteCompact.attemptRemoteCompaction(input(anthropicModel, "ses_capability_lost")).pipe(
+        Effect.provide(noHttpLayer),
+        noRetries,
+      )
+      expect(outcome.used).toBe("local")
+      expect(RemoteCompact.EncryptedContentStore.get("ses_capability_lost")).toBeUndefined()
+    }),
+  )
+})
+
+describe("remote compaction encrypted_content staging", () => {
+  const it = testEffect(Layer.empty)
+
+  it.live("sends the staged encrypted context back on the next compaction", () =>
+    Effect.gen(function* () {
+      const sessionID = "ses_round_trip"
+      const bodies = yield* Ref.make<ReadonlyArray<Record<string, unknown>>>([])
+      const counter = yield* Ref.make(0)
+      const layer: Layer.Layer<RequestExecutor.Service> = compactLayer(({ request, respond }) =>
+        Effect.gen(function* () {
+          const web = yield* HttpClientRequest.toWeb(request).pipe(Effect.orDie)
+          expect(web.url).toBe("https://api.openai.test/v1/responses/compact")
+          const body = (yield* Effect.promise(() => web.json())) as Record<string, unknown>
+          yield* Ref.update(bodies, (items) => [...items, body])
+          const current = yield* Ref.get(counter)
+          yield* Ref.set(counter, current + 1)
+          return respond(compactResponse(`enc-${current + 1}`), { headers: JSON_HEADERS })
+        }),
+      )
+      const first = yield* RemoteCompact.attemptRemoteCompaction(input(openaiModel, sessionID)).pipe(
+        Effect.provide(layer),
+        noRetries,
+      )
+      expect(first).toEqual({ used: "remote", encryptedContent: "enc-1" })
+      expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBe("enc-1")
+      const second = yield* RemoteCompact.attemptRemoteCompaction(input(openaiModel, sessionID)).pipe(
+        Effect.provide(layer),
+        noRetries,
+      )
+      expect(second).toEqual({ used: "remote", encryptedContent: "enc-2" })
+      const sent = yield* Ref.get(bodies)
+      expect(sent).toHaveLength(2)
+      const firstInput = sent[0]!.input as ReadonlyArray<Record<string, unknown>>
+      const secondInput = sent[1]!.input as ReadonlyArray<Record<string, unknown>>
+      expect(firstInput[0]).toEqual({ role: "user", content: [{ type: "input_text", text: "Fix the failing test." }] })
+      expect(secondInput[0]).toEqual({ type: "compaction", encrypted_content: "enc-1" })
+      expect(sent[1]!.model).toBe("gpt-5-mini")
+      expect(sent[0]!.stream).toBeUndefined()
+    }),
+  )
+
+  it.live("clearing the store drops the staged context (restart semantics)", () =>
+    Effect.gen(function* () {
+      RemoteCompact.EncryptedContentStore.set("ses_restart", "enc-lost")
+      expect(RemoteCompact.EncryptedContentStore.get("ses_restart")).toBe("enc-lost")
+      RemoteCompact.EncryptedContentStore.clear("ses_restart")
+      expect(RemoteCompact.EncryptedContentStore.get("ses_restart")).toBeUndefined()
+    }),
+  )
+})
+
+// Gap 1 durability: with a bound Database handle the blob survives a process
+// restart (fresh Database instance over the same file). The migration is not
+// registered in migration.gen.ts yet (mainline does that), so each phase
+// applies it explicitly via applyOnly — tracked, hence idempotent across the
+// two phases.
+describe("remote compaction encrypted_content durability (Gap 1)", () => {
+  const it = testEffect(Layer.empty)
+
+  const seedSession = (db: Database.Interface["db"], sessionID: string) =>
+    Effect.gen(function* () {
+      yield* db.run(`
+        INSERT INTO project (id, worktree, sandboxes, time_created, time_updated)
+        VALUES ('project-${sessionID}', '/repo', '[]', 1, 1)
+      `)
+      yield* db.run(`
+        INSERT INTO session (
+          id, project_id, slug, directory, title, version, mutation_epoch, time_created, time_updated
+        ) VALUES (
+          '${sessionID}', 'project-${sessionID}', '${sessionID}', '/repo', 'Remote compact', '1', 0, 1, 1
+        )
+      `)
+    })
+
+  it.instance(
+    "set → restart (new Database instance, same file) → get hits with attribution",
+    Effect.gen(function* () {
+      const test = yield* TestInstance
+      const file = join(test.directory, "remote-compact.db")
+      const sessionID = "ses_persist_round_trip"
+      yield* Effect.addFinalizer(() => Effect.sync(() => RemoteCompact.EncryptedContentStore.bind(undefined)))
+
+      // Phase 1 — first process: bind, seed, store.
+      yield* Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistenceMigration])
+        yield* seedSession(db, sessionID)
+        RemoteCompact.EncryptedContentStore.bind(db)
+        RemoteCompact.EncryptedContentStore.set(sessionID, "enc-durable", {
+          providerID: "openai",
+          modelID: "gpt-5-mini",
+          sourceRunID: "run-persist-1",
+        })
+        expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBe("enc-durable")
+        RemoteCompact.EncryptedContentStore.bind(undefined)
+        // Unbound store is memory-only: the durable row is invisible here.
+        expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBeUndefined()
+      }).pipe(Effect.provide(Database.layerFromPath(file)))
+
+      // Phase 2 — restart: a fresh Database instance over the same file sees it.
+      yield* Effect.gen(function* () {
+        const { db } = yield* Database.Service
+        yield* DatabaseMigration.applyOnly(db, [remoteCompactPersistenceMigration])
+        RemoteCompact.EncryptedContentStore.bind(db)
+        expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBe("enc-durable")
+        const record = RemoteCompact.EncryptedContentStore.getRecord(sessionID)
+        expect(record?.providerID).toBe("openai")
+        expect(record?.modelID).toBe("gpt-5-mini")
+        expect(record?.sourceRunID).toBe("run-persist-1")
+
+        // Latest wins: a second set replaces the row (never a second row).
+        RemoteCompact.EncryptedContentStore.set(sessionID, "enc-durable-2", { providerID: "openai" })
+        expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBe("enc-durable-2")
+
+        // Fail-over clear removes the durable row as well.
+        RemoteCompact.EncryptedContentStore.clear(sessionID)
+        expect(RemoteCompact.EncryptedContentStore.get(sessionID)).toBeUndefined()
+      }).pipe(Effect.provide(Database.layerFromPath(file)))
+    }),
+  )
+})
diff --git a/packages/deepagent-code/test/session/retry.test.ts b/packages/deepagent-code/test/session/retry.test.ts
index 2593cb83..e3d93876 100644
--- a/packages/deepagent-code/test/session/retry.test.ts
+++ b/packages/deepagent-code/test/session/retry.test.ts
@@ -1,6 +1,14 @@
 import { describe, expect, test } from "bun:test"
 import { SessionV1 } from "@deepagent-code/core/v1/session"
 import type { NamedError } from "@deepagent-code/core/util/error"
+import {
+  LLMError,
+  ProviderInternalReason,
+  QuotaExceededReason,
+  RateLimitReason,
+  TransportReason,
+  type LLMErrorReason,
+} from "@deepagent-code/llm"
 import { APICallError } from "ai"
 import { setTimeout as sleep } from "node:timers/promises"
 import { Effect, Layer, Schedule, Schema } from "effect"
@@ -357,6 +365,86 @@ describe("session.retry.retryable", () => {
   })
 })
 
+describe("session.retry.reason classification", () => {
+  const llmError = (reason: LLMErrorReason) =>
+    new LLMError({ module: "RequestExecutor", method: "execute", reason })
+
+  test("detects llm errors structurally", () => {
+    expect(SessionRetry.isLLMError(llmError(new RateLimitReason({ message: "HTTP 429" })))).toBe(true)
+    // Wrapped/serialized shapes still classify.
+    expect(SessionRetry.isLLMError({ _tag: "LLM.Error", reason: { _tag: "RateLimit" } })).toBe(true)
+    expect(SessionRetry.isLLMError(new TypeError("terminated"))).toBe(false)
+    expect(SessionRetry.isLLMError({ _tag: "LLM.Error" })).toBe(false)
+  })
+
+  test("retries rate limit and provider internal reasons", () => {
+    expect(SessionRetry.retryableViaReason(llmError(new RateLimitReason({ message: "HTTP 429" })))).toEqual({
+      message: "HTTP 429",
+    })
+    expect(
+      SessionRetry.retryableViaReason(llmError(new ProviderInternalReason({ message: "HTTP 503", status: 503 }))),
+    ).toEqual({ message: "HTTP 503" })
+  })
+
+  test("retries only pre-dispatch transport reasons", () => {
+    expect(
+      SessionRetry.retryableViaReason(llmError(new TransportReason({ message: "connect failed", phase: "pre-dispatch" }))),
+    ).toEqual({ message: "connect failed" })
+    // Post-dispatch transport failures may already have been billed.
+    expect(
+      SessionRetry.retryableViaReason(llmError(new TransportReason({ message: "stream broke", phase: "post-dispatch" }))),
+    ).toBeUndefined()
+    expect(SessionRetry.retryableViaReason(llmError(new TransportReason({ message: "ws closed" })))).toBeUndefined()
+  })
+
+  test("terminal reasons are never retried", () => {
+    expect(
+      SessionRetry.retryableViaReason(llmError(new QuotaExceededReason({ message: "insufficient_quota" }))),
+    ).toBeUndefined()
+  })
+
+  test("classification wins over string heuristics when a reason is available", () => {
+    const quota = llmError(new QuotaExceededReason({ message: "rate limited: insufficient_quota" }))
+    // The heuristic alone would retry this parsed message.
+    const heuristicMatch = wrap("rate limit exceeded")
+    expect(SessionRetry.retryable(heuristicMatch, retryProvider)).toBeDefined()
+    expect(SessionRetry.retryableFor(quota, heuristicMatch, retryProvider)).toBeUndefined()
+  })
+
+  test("falls back to string heuristics without an llm reason", () => {
+    const raw = new TypeError("terminated")
+    const parsed = wrap(JSON.stringify({ type: "error", error: { type: "too_many_requests" } }))
+    expect(SessionRetry.retryableFor(raw, parsed, retryProvider)).toEqual({ message: "Too Many Requests" })
+  })
+
+  it.instance("policy classifies raw llm errors before heuristics run", () =>
+    Effect.gen(function* () {
+      const sessionID = SessionID.make("session-retry-classification")
+      const status = yield* SessionStatus.Service
+
+      const step = yield* Schedule.toStepWithMetadata(
+        SessionRetry.policy({
+          provider: "test",
+          parse: (e) => MessageV2.fromError(e, { providerID }),
+          set: (info) =>
+            status.set(sessionID, {
+              type: "retry",
+              attempt: info.attempt,
+              message: info.message,
+              next: info.next,
+            }),
+        }),
+      )
+      yield* step(llmError(new RateLimitReason({ message: "Provider request failed with HTTP 429" })))
+
+      expect(yield* status.get(sessionID)).toMatchObject({
+        type: "retry",
+        message: "Provider request failed with HTTP 429",
+      })
+    }),
+  )
+})
+
 describe("session.message-v2.fromError", () => {
   test.concurrent(
     "converts ECONNRESET socket errors to retryable APIError",
diff --git a/packages/deepagent-code/test/session/revert-compact.test.ts b/packages/deepagent-code/test/session/revert-compact.test.ts
index 99101222..dcc8ab82 100644
--- a/packages/deepagent-code/test/session/revert-compact.test.ts
+++ b/packages/deepagent-code/test/session/revert-compact.test.ts
@@ -15,12 +15,16 @@ import { provideTmpdirInstance } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 import { ProviderV2 } from "@deepagent-code/core/provider"
 import { ModelV2 } from "@deepagent-code/core/model"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { Storage } from "@/storage/storage"
 
 void Log.init({ print: false })
 
 const env = Layer.mergeAll(
   Session.defaultLayer,
+  // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+  // writes hit the session FK.
+  SessionProjector.defaultLayer,
   SessionRevert.defaultLayer,
   Snapshot.defaultLayer,
   Storage.defaultLayer,
diff --git a/packages/deepagent-code/test/session/snapshot-tool-race.test.ts b/packages/deepagent-code/test/session/snapshot-tool-race.test.ts
index 62f79177..eede6444 100644
--- a/packages/deepagent-code/test/session/snapshot-tool-race.test.ts
+++ b/packages/deepagent-code/test/session/snapshot-tool-race.test.ts
@@ -11,7 +11,7 @@
  * before tools run by hooking into start-step, but the AI SDK executes
  * tools internally during multi-step processing before emitting events.
  */
-import { expect } from "bun:test"
+import { afterEach, expect } from "bun:test"
 import { Effect, Layer } from "effect"
 import { FetchHttpClient } from "effect/unstable/http"
 import fs from "fs/promises"
@@ -25,13 +25,15 @@ import { MessageV2 } from "../../src/session/message-v2"
 import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { SessionV2 } from "@deepagent-code/core/session"
 import * as Log from "@deepagent-code/core/util/log"
-import { provideTmpdirServer, testInstanceStoreLayer } from "../fixture/fixture"
+import { disposeAllInstances, provideTmpdirServer, testInstanceStoreLayer } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 import { TestLLMServer } from "../lib/llm-server"
 
 // Same layer setup as prompt-effect.test.ts
 import { NodeFileSystem } from "@effect/platform-node"
 import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { DebugService } from "@/debug/service"
 import { RuntimeBase } from "@/runtime/base"
@@ -53,6 +55,7 @@ import { Skill } from "../../src/skill"
 import { SystemPrompt } from "../../src/session/system"
 import { Todo } from "../../src/session/todo"
 import { SessionCompaction } from "../../src/session/compaction"
+import { RequestExecutor } from "@deepagent-code/llm/route"
 import { Instruction } from "../../src/session/instruction"
 import { SessionProcessor } from "../../src/session/processor"
 import { SessionRunState } from "../../src/session/run-state"
@@ -74,6 +77,12 @@ import { PromptEpoch } from "@/session/prompt-epoch"
 import { LocationIdentity } from "@deepagent-code/core/context-federation/identity"
 import { SessionProviderOwner } from "@deepagent-code/core/context-federation/provider-owner"
 
+// Dispose any instances loaded into the process-wide AppRuntime instance
+// store so this file leaves no shared state for files that run after it.
+afterEach(async () => {
+  await disposeAllInstances()
+})
+
 void Log.init({ print: false })
 
 const mcp = Layer.succeed(
@@ -173,6 +182,18 @@ const stubDebugServiceLayer = Layer.succeed(
   }),
 )
 
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
 function makeHttp() {
   const deps = Layer.mergeAll(
     Session.defaultLayer,
@@ -191,7 +212,7 @@ function makeHttp() {
     FSUtil.defaultLayer,
     BackgroundJob.defaultLayer,
     status,
-    Database.defaultLayer,
+    database,
     EventV2Bridge.defaultLayer,
     PromptEpoch.defaultLayer,
   ).pipe(Layer.provideMerge(infra))
@@ -227,6 +248,7 @@ function makeHttp() {
   )
   const compact = SessionCompaction.layer.pipe(
     Layer.provide(RuntimeFlags.layer({ experimentalEventSystem: true })),
+    Layer.provide(RequestExecutor.defaultLayer),
     Layer.provideMerge(proc),
     Layer.provideMerge(deps),
   )
diff --git a/packages/deepagent-code/test/session/steer.test.ts b/packages/deepagent-code/test/session/steer.test.ts
index 799b41fe..cd58ecfb 100644
--- a/packages/deepagent-code/test/session/steer.test.ts
+++ b/packages/deepagent-code/test/session/steer.test.ts
@@ -2,6 +2,8 @@ import { NodeFileSystem } from "@effect/platform-node"
 import { ConfigV1 } from "@deepagent-code/core/v1/config/config"
 import { SessionV1 } from "@deepagent-code/core/v1/session"
 import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import remoteCompactPersistenceMigration from "@deepagent-code/core/database/migration/20260820000000_remote_compact_persistence"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { FetchHttpClient } from "effect/unstable/http"
 import { expect } from "bun:test"
@@ -24,6 +26,7 @@ import { LLM } from "../../src/session/llm"
 import { MessageV2 } from "../../src/session/message-v2"
 import { FSUtil } from "@deepagent-code/core/fs-util"
 import { SessionCompaction } from "../../src/session/compaction"
+import { RequestExecutor } from "@deepagent-code/llm/route"
 import { SessionSummary } from "../../src/session/summary"
 import { Instruction } from "../../src/session/instruction"
 import { SessionProcessor } from "../../src/session/processor"
@@ -196,6 +199,18 @@ const infra = Layer.mergeAll(NodeFileSystem.layer, CrossSpawnSpawner.defaultLaye
 
 // steeringOn/steeringOff: the ONLY difference is the v4Steering flag, so tests can assert the
 // kill-switch cleanly. The steer buffer shares the same Database as Session (built over `deps`).
+// UPD-005: the Gap 1/Gap 2 persistence migration is not registered in
+// migration.gen.ts yet (mainline registers it). Apply it over the tracked history
+// so compaction_run carries the mode columns the drizzle schema already declares.
+const database = Layer.effect(
+  Database.Service,
+  Effect.gen(function* () {
+    const service = yield* Database.Service
+    yield* DatabaseMigration.applyOnly(service.db, [remoteCompactPersistenceMigration])
+    return service
+  }),
+).pipe(Layer.provide(Database.defaultLayer))
+
 function makePrompt(steering: boolean) {
   const flags = RuntimeFlags.layer({
     experimentalEventSystem: true,
@@ -219,7 +234,7 @@ function makePrompt(steering: boolean) {
     FSUtil.defaultLayer,
     BackgroundJob.defaultLayer,
     status,
-    Database.defaultLayer,
+    database,
     EventV2Bridge.defaultLayer,
     PromptEpoch.defaultLayer,
   ).pipe(Layer.provideMerge(infra))
@@ -250,7 +265,12 @@ function makePrompt(steering: boolean) {
     Layer.provide(flags),
     Layer.provideMerge(deps),
   )
-  const compact = SessionCompaction.layer.pipe(Layer.provide(flags), Layer.provideMerge(proc), Layer.provideMerge(deps))
+  const compact = SessionCompaction.layer.pipe(
+    Layer.provide(flags),
+    Layer.provide(RequestExecutor.defaultLayer),
+    Layer.provideMerge(proc),
+    Layer.provideMerge(deps),
+  )
   return SessionPrompt.layer.pipe(
     Layer.provide(SessionProviderOwner.layer.pipe(Layer.provide(deps))),
     Layer.provide(testInstanceStoreLayer),
diff --git a/packages/deepagent-code/test/session/task-fork.test.ts b/packages/deepagent-code/test/session/task-fork.test.ts
index 7ab44b39..79bd0183 100644
--- a/packages/deepagent-code/test/session/task-fork.test.ts
+++ b/packages/deepagent-code/test/session/task-fork.test.ts
@@ -3,6 +3,7 @@ import { Database } from "@deepagent-code/core/database/database"
 import { ProviderV2 } from "@deepagent-code/core/provider"
 import { ModelV2 } from "@deepagent-code/core/model"
 import { SessionForkIntentTable } from "@deepagent-code/core/session/sql"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { Effect, Layer } from "effect"
 import { eq } from "drizzle-orm"
 import { MessageV2 } from "@/session/message-v2"
@@ -12,7 +13,11 @@ import { MessageID, PartID, SessionID } from "@/session/schema"
 import { TestInstance } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 
-const it = testEffect(Layer.mergeAll(Session.defaultLayer, Database.defaultLayer))
+// QUAL-007: the core SessionProjector is the canonical V1-event projection path (session/message/part
+// rows); without it the minimal layer never materializes sessions created through events.
+const it = testEffect(
+  Layer.mergeAll(Session.defaultLayer.pipe(Layer.provide(SessionProjector.defaultLayer)), Database.defaultLayer),
+)
 const model = { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("test") }
 
 const addUser = Effect.fn("TaskForkTest.addUser")(function* (
diff --git a/packages/deepagent-code/test/session/turn-stage-evidence.test.ts b/packages/deepagent-code/test/session/turn-stage-evidence.test.ts
new file mode 100644
index 00000000..0487c245
--- /dev/null
+++ b/packages/deepagent-code/test/session/turn-stage-evidence.test.ts
@@ -0,0 +1,452 @@
+import { describe, expect } from "bun:test"
+import { ProjectScopeKey, SecurityNamespaceID } from "@deepagent-code/core/context-federation/reference"
+import { ContextFederationRollout } from "@deepagent-code/core/context-federation/rollout"
+import { SessionProviderOwnerLeaseTable } from "@deepagent-code/core/context-federation/session-sql"
+import { ProjectScopeIdentityTable, SecurityNamespaceTable } from "@deepagent-code/core/context-federation/sql"
+import { Database } from "@deepagent-code/core/database/database"
+import { DatabaseMigration } from "@deepagent-code/core/database/migration"
+import turnStageEvidenceMigration from "@deepagent-code/core/database/migration/20260820120000_session_turn_stage_evidence"
+import { DeepAgentReleasedSnapshot } from "@deepagent-code/core/deepagent/released-snapshot"
+import { ModelV2 } from "@deepagent-code/core/model"
+import { ProjectV2 } from "@deepagent-code/core/project"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { AbsolutePath } from "@deepagent-code/core/schema"
+import { MessageTable, SessionTable } from "@deepagent-code/core/session/sql"
+import { SessionV1 } from "@deepagent-code/core/v1/session"
+import { sql } from "drizzle-orm"
+import { Effect } from "effect"
+import { RuntimeFlags } from "../../src/effect/runtime-flags"
+import { ContextActivationReceipt } from "../../src/context-federation/activation-receipt"
+import {
+  SessionLegacyActivityRunTable,
+  SessionLegacyActivityTable,
+  SessionLegacyActivityTerminalTable,
+} from "../../src/session/activity-sql"
+import { MessageID, PartID, SessionID } from "../../src/session/schema"
+import { SessionPromptIntent } from "../../src/session/prompt-intent"
+import { SessionToolRequestReceiptTable } from "../../src/session/tool-request-receipt.sql"
+import { TurnDeadlineWatchdog } from "../../src/session/turn-deadline-watchdog"
+import { TurnStageEvidence } from "../../src/session/turn-stage-evidence"
+import { testEffect } from "../lib/effect"
+
+const database = Database.layerFromPath(":memory:")
+const it = testEffect(database)
+const sessionID = SessionID.make("ses_turn_stage_evidence_test")
+const namespace = SecurityNamespaceID.make("sec_turn_stage_evidence_test")
+const projectScope = ProjectScopeKey.make("prjctx_turn_stage_evidence_test")
+const providerOwnerToken = "turn-stage-evidence-fixture"
+const releasedKnowledgeBinding = DeepAgentReleasedSnapshot.binding(undefined)
+
+const setup = Effect.gen(function* () {
+  const { db } = yield* Database.Service
+  // The stage-evidence migration ships unregistered (mainline registers it); apply it here.
+  yield* DatabaseMigration.applyOnly(db, [turnStageEvidenceMigration])
+  yield* db
+    .insert(SessionProviderOwnerLeaseTable)
+    .values({
+      owner_token: providerOwnerToken,
+      registered_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`,
+      heartbeat_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER)`,
+      lease_expires_at: sql`CAST((julianday('now') - 2440587.5) * 86400000 AS INTEGER) + 31536000000`,
+    })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(SecurityNamespaceTable)
+    .values({ id: namespace, kind: "implicit_local", binding_hash: "stage-evidence-namespace", created_at: 1 })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(ProjectScopeIdentityTable)
+    .values({
+      security_namespace_id: namespace,
+      project_scope_key: projectScope,
+      project_kind: "registered_root",
+      project_identity_hash: "stage-evidence-project",
+      observed_project_id: ProjectV2.ID.global,
+      created_at: 1,
+    })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(ProjectTable)
+    .values({ id: ProjectV2.ID.global, worktree: AbsolutePath.make("/project"), sandboxes: [] })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(SessionTable)
+    .values({
+      id: sessionID,
+      project_id: ProjectV2.ID.global,
+      slug: "stage-evidence",
+      directory: "/project",
+      title: "stage-evidence",
+      version: "test",
+    })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+})
+
+const claim = (input: { intentID: string; messageID: MessageID }) =>
+  SessionPromptIntent.claim({
+    intentID: input.intentID,
+    sessionID,
+    source: "composer",
+    variant: "original",
+    payloadHash: `payload-${input.intentID}`,
+    messageID: input.messageID,
+  })
+
+const message = (messageID: MessageID): { info: SessionV1.User; parts: SessionV1.Part[] } => ({
+  info: {
+    id: messageID,
+    sessionID,
+    role: "user",
+    time: { created: 1 },
+    agent: "build",
+    model: { providerID: ProviderV2.ID.make("test"), modelID: ModelV2.ID.make("test") },
+  },
+  parts: [
+    {
+      id: PartID.make(`prt_${messageID}`),
+      messageID,
+      sessionID,
+      type: "text",
+      text: "atomic prompt",
+    },
+  ],
+})
+
+// Drives the durable state machine (claim -> materializeTurn) to a live activity + run,
+// exactly like the provider-turn path does before its first stage-evidence write.
+const liveActivity = (intentID: string) =>
+  Effect.gen(function* () {
+    const trigger = yield* claim({ intentID, messageID: MessageID.make(`msg_${intentID}`) })
+    expect(trigger.kind).toBe("claimed")
+    if (trigger.kind !== "claimed") return yield* Effect.die("claim not claimed")
+    const materialized = yield* SessionPromptIntent.materializeTurn({
+      receipt: trigger.receipt,
+      message: message(trigger.receipt.messageID),
+    })
+    if (!("run" in materialized)) return yield* Effect.die("materializeTurn produced no run")
+    return { run: materialized.run, receipt: trigger.receipt }
+  })
+
+describe("TurnStageEvidence", () => {
+  it.effect("records the provider-turn stage sequence forward-only on a state-machine driven activity", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      const { run } = yield* liveActivity("intent_stage_sequence")
+      const activityID = run.activityID
+
+      // The same single-statement upserts prompt.ts performs at each boundary.
+      yield* TurnStageEvidence.record(db, {
+        sessionID,
+        activityID,
+        stage: "activity_claimed",
+        details: { via: "steer_claim" },
+        now: 100,
+      })
+      yield* TurnStageEvidence.record(db, { sessionID, activityID, stage: "snapshot_started", now: 101 })
+      yield* TurnStageEvidence.record(db, { sessionID, activityID, stage: "snapshot_finished", now: 102 })
+      yield* TurnStageEvidence.record(db, {
+        sessionID,
+        activityID,
+        stage: "history_loaded",
+        details: { messages: 3 },
+        now: 103,
+      })
+      // request_prepared reuses the enclosing receipt transaction in prompt.ts.
+      yield* db
+        .transaction((tx) =>
+          TurnStageEvidence.recordInTransaction(tx, {
+            sessionID,
+            activityID,
+            stage: "request_prepared",
+            details: { receiptID: "receipt-stage-sequence", requestOrdinal: 1 },
+            now: 104,
+          }),
+        )
+        .pipe(Effect.orDie)
+      yield* TurnStageEvidence.record(db, { sessionID, activityID, stage: "provider_dispatch_started", now: 105 })
+      yield* TurnStageEvidence.record(db, {
+        sessionID,
+        activityID,
+        stage: "terminal_settled",
+        details: { state: "completed" },
+        now: 106,
+      })
+
+      // One row per (session_id, activity_id), holding the furthest stage.
+      const rows = yield* TurnStageEvidence.recent(db, { sessionID })
+      expect(rows.filter((row) => row.activity_id === activityID)).toHaveLength(1)
+      const latest = yield* TurnStageEvidence.latest(db, { sessionID, activityID })
+      expect(latest).toMatchObject({
+        session_id: sessionID,
+        activity_id: activityID,
+        stage: "terminal_settled",
+        stage_at: 106,
+        details: { state: "completed" },
+      })
+
+      // Forward-only: an earlier stage from a retried turn cannot regress the row.
+      yield* TurnStageEvidence.record(db, { sessionID, activityID, stage: "snapshot_started", now: 107 })
+      const still = yield* TurnStageEvidence.latest(db, { sessionID, activityID })
+      expect(still).toMatchObject({ stage: "terminal_settled", stage_at: 106, updated_at: latest!.updated_at })
+
+      // Same-stage re-settlement updates attribution details (equal order passes the guard).
+      yield* TurnStageEvidence.record(db, {
+        sessionID,
+        activityID,
+        stage: "terminal_settled",
+        details: { state: "failed", reasonCode: "provider_error" },
+        now: 108,
+      })
+      const rewritten = yield* TurnStageEvidence.latest(db, { sessionID, activityID })
+      expect(rewritten).toMatchObject({
+        stage: "terminal_settled",
+        stage_at: 108,
+        details: { state: "failed", reasonCode: "provider_error" },
+      })
+    }),
+  )
+
+  it.effect("a failed evidence write never interrupts the turn (FK violation is swallowed)", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const { db } = yield* Database.Service
+      // No such session row -> FK violation; record() must log and succeed.
+      yield* TurnStageEvidence.record(db, {
+        sessionID: "ses_missing_fk_target",
+        activityID: "act_missing_fk",
+        stage: "activity_claimed",
+      })
+      const rows = yield* TurnStageEvidence.recent(db, { sessionID: "ses_missing_fk_target" })
+      expect(rows).toEqual([])
+    }),
+  )
+})
+
+describe("TurnDeadlineWatchdog", () => {
+  it.effect("the watchdog flag ships OFF with a ten-minute default deadline", () =>
+    Effect.gen(function* () {
+      const flags = yield* RuntimeFlags.Service
+      expect(flags.providerPreDispatchWatchdog).toBe(false)
+      expect(flags.providerPreDispatchDeadlineMs).toBe(10 * 60_000)
+    }).pipe(Effect.provide(RuntimeFlags.layer({}))),
+  )
+
+  it.effect("flag ON: fails a stale activity without dispatch evidence through the existing terminal path", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const databaseService = yield* Database.Service
+      const { run } = yield* liveActivity("intent_watchdog_stale")
+
+      const outcomes = yield* TurnDeadlineWatchdog.sweep({ database: databaseService, deadlineMs: 0 })
+      expect(outcomes.find((outcome) => outcome.activityID === run.activityID)).toMatchObject({
+        kind: "failed",
+        runID: run.runID,
+      })
+
+      // Existing terminalization path: typed terminal reason on the activity + terminal rows.
+      const { db } = databaseService
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTable)
+          .where(sql`${SessionLegacyActivityTable.activity_id} = ${run.activityID}`)
+          .get()
+          .pipe(Effect.orDie),
+      ).toMatchObject({ state: "failed" })
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTerminalTable)
+          .where(sql`${SessionLegacyActivityTerminalTable.activity_id} = ${run.activityID}`)
+          .get()
+          .pipe(Effect.orDie),
+      ).toMatchObject({
+        state: "failed",
+        reason_code: TurnDeadlineWatchdog.ReasonCode,
+        source: "same_process_recovery",
+        run_id: run.runID,
+      })
+      // Run row is terminalized alongside the activity (exact retry stays possible).
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityRunTable)
+          .where(sql`${SessionLegacyActivityRunTable.run_id} = ${run.runID}`)
+          .get()
+          .pipe(Effect.orDie),
+      ).toMatchObject({ state: "failed", terminal_reason: TurnDeadlineWatchdog.ReasonCode })
+
+      // Record-only evidence shows the watchdog settled the turn.
+      expect(
+        yield* TurnStageEvidence.latest(db, { sessionID, activityID: run.activityID }),
+      ).toMatchObject({
+        stage: "terminal_settled",
+        details: { reasonCode: TurnDeadlineWatchdog.ReasonCode, via: "pre_dispatch_deadline_watchdog" },
+      })
+
+      // Second sweep is a no-op for this activity (no longer active).
+      const rerun = yield* TurnDeadlineWatchdog.sweep({ database: databaseService, deadlineMs: 0 })
+      expect(rerun.some((outcome) => outcome.activityID === run.activityID)).toBe(false)
+    }),
+  )
+
+  it.effect("flag ON: skips an activity whose stage evidence already shows dispatch progress", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const databaseService = yield* Database.Service
+      const { db } = databaseService
+      const { run } = yield* liveActivity("intent_watchdog_dispatched")
+      // Durable dispatch-side evidence (as prompt.ts writes when the receipt is prepared).
+      yield* TurnStageEvidence.record(db, {
+        sessionID,
+        activityID: run.activityID,
+        stage: "request_prepared",
+        details: { receiptID: "receipt-watchdog-dispatched" },
+      })
+
+      const outcomes = yield* TurnDeadlineWatchdog.sweep({ database: databaseService, deadlineMs: 0 })
+      expect(outcomes.find((outcome) => outcome.activityID === run.activityID)).toMatchObject({
+        kind: "skipped",
+        reason: "stage_evidence_present",
+      })
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTable)
+          .where(sql`${SessionLegacyActivityTable.activity_id} = ${run.activityID}`)
+          .get()
+          .pipe(Effect.orDie),
+      ).toMatchObject({ state: "active" })
+    }),
+  )
+
+  it.effect("flag ON: never touches an activity that already has a durable receipt", () =>
+    Effect.gen(function* () {
+      yield* setup
+      const databaseService = yield* Database.Service
+      const { db } = databaseService
+      const { run, receipt } = yield* liveActivity("intent_watchdog_receipt")
+
+      const assistantID = MessageID.make("msg_watchdog_receipt_assistant")
+      yield* db
+        .insert(MessageTable)
+        .values({
+          id: assistantID,
+          session_id: sessionID,
+          time_created: 2,
+          data: {
+            role: "assistant",
+            parentID: receipt.messageID,
+            mode: "build",
+            agent: "build",
+            path: { cwd: "/project", root: "/project" },
+            cost: 0,
+            tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+            modelID: ModelV2.ID.make("test"),
+            providerID: ProviderV2.ID.make("test"),
+            time: { created: 2 },
+          } as typeof MessageTable.$inferInsert.data,
+        })
+        .run()
+        .pipe(Effect.orDie)
+      yield* db
+        .insert(SessionToolRequestReceiptTable) // fixture-exempt: seeds durable receipt evidence; no dispatch exists to produce it naturally
+        .values({
+          receipt_id: "receipt-watchdog-present",
+          request_ordinal: 1,
+          session_id: sessionID,
+          user_message_id: receipt.messageID,
+          assistant_message_id: assistantID,
+          context_eligibility: contextEligibility,
+          context_readiness: contextReadiness,
+          context_activation: contextActivation,
+          context_activation_fingerprint: contextActivationFingerprint,
+          released_knowledge_security_namespace_id: namespace,
+          released_knowledge_project_scope_key: projectScope,
+          released_knowledge_binding_state: releasedKnowledgeBinding.state,
+          released_knowledge_exact_refs: releasedKnowledgeBinding.exactRefs,
+          released_knowledge_exact_refs_fingerprint: releasedKnowledgeBinding.exactRefsFingerprint,
+          provider_id: "test",
+          model_id: "test",
+          protocol: "test",
+          registry_tool_ids: [],
+          permission_filtered_tool_ids: [],
+          final_offered_tool_ids: [],
+          call_ids: [],
+          adapter_tool_capability: "unknown",
+          prompt_epoch: 0,
+          prompt_window_id: "window-watchdog-present",
+          effective_history_hash: "history-watchdog-present",
+          request_input_hash: "input-watchdog-present",
+          response_chain_reuse_decision: "not_supported",
+          response_chain_refusal_reason: "fixture_path_not_stateful",
+          provider_state: "preparing",
+          owner_token: providerOwnerToken,
+          request_state: "prepared",
+          created_at: Date.now(),
+        })
+        .run()
+        .pipe(Effect.orDie)
+
+      const outcomes = yield* TurnDeadlineWatchdog.sweep({ database: databaseService, deadlineMs: 0 })
+      expect(outcomes.find((outcome) => outcome.activityID === run.activityID)).toMatchObject({
+        kind: "skipped",
+        reason: "receipt_present",
+      })
+      expect(
+        yield* db
+          .select()
+          .from(SessionLegacyActivityTable)
+          .where(sql`${SessionLegacyActivityTable.activity_id} = ${run.activityID}`)
+          .get()
+          .pipe(Effect.orDie),
+      ).toMatchObject({ state: "active" })
+    }),
+  )
+})
+
+const contextEligibility = ContextFederationRollout.resolveProject(
+  ContextFederationRollout.resolve(
+    {
+      contextFederationShadow: false,
+      locationIndexesV2Shadow: false,
+      contextProjectionV2: false,
+      contextQueryToolsV2: false,
+      coreV2ExecutionOwner: false,
+    },
+    { coreV2ParityVerified: false },
+  ),
+  projectScope,
+  { stage: "all", percentage: 100, internalProjectScopeKeys: [], killSwitch: false },
+)
+const contextReadiness = {
+  ...ContextFederationRollout.READINESS_READY_STUB,
+  revision: "readiness-stage-evidence",
+  projectScopeKey: projectScope,
+  observedAt: 1,
+}
+const contextDecision = ContextFederationRollout.activate(contextEligibility, contextReadiness)
+const contextActivation = ContextActivationReceipt.make({
+  readiness: contextReadiness,
+  decision: contextDecision,
+  recordedAt: 2,
+  projectionEnabled: false,
+  toolsEnabled: false,
+})
+const contextActivationFingerprint = ContextActivationReceipt.fingerprint({
+  eligibility: contextEligibility,
+  readiness: contextReadiness,
+  activation: contextActivation,
+})
diff --git a/packages/deepagent-code/test/session/v4-integration.test.ts b/packages/deepagent-code/test/session/v4-integration.test.ts
index bd1c6f3a..3a8989d2 100644
--- a/packages/deepagent-code/test/session/v4-integration.test.ts
+++ b/packages/deepagent-code/test/session/v4-integration.test.ts
@@ -17,6 +17,7 @@ import { AgentListProviderService } from "@deepagent-code/core/im/agent-list-pro
 import type { AgentDescriptor } from "@deepagent-code/core/im/mention-parser"
 import { RuntimeFlags } from "../../src/effect/runtime-flags"
 import { AgentHandoffConsumer } from "../../src/session/agent-handoff-consumer"
+import { HandoffAdmission } from "@deepagent-code/core/deepagent/handoff-admission"
 import { pollWithTimeout, testEffect } from "../lib/effect"
 
 // V4.0 §I — END-TO-END integration. Wires the real chain across all waves over one in-memory DB:
@@ -80,6 +81,7 @@ const makeLayer = (flags?: Partial<RuntimeFlags.Info>) => {
     Observability.layerWith({ now }),
     ApprovalQueue.layerWith({ now }),
     AgentExecution.layerWith({ now }),
+    HandoffAdmission.layerWith({ now }),
   ).pipe(Layer.provideMerge(database))
   // MultiAgentRuntime is the REAL DispatchPort the dispatcher hands routed events to.
   const runtime = Layer.unwrap(
@@ -242,6 +244,7 @@ describe("V4.1 durable handoff end-to-end", () => {
     Observability.layerWith({ now }),
     ApprovalQueue.layerWith({ now }),
     AgentExecution.layerWith({ now }),
+    HandoffAdmission.layerWith({ now }),
   ).pipe(Layer.provideMerge(database))
   let failed = false
   const handoffRuns: Array<{ readonly agent: string; readonly baseRef?: string }> = []
diff --git a/packages/deepagent-code/test/share/share-next.test.ts b/packages/deepagent-code/test/share/share-next.test.ts
index 84f7b89f..8a0a06f0 100644
--- a/packages/deepagent-code/test/share/share-next.test.ts
+++ b/packages/deepagent-code/test/share/share-next.test.ts
@@ -11,6 +11,7 @@ import { EventV2Bridge } from "../../src/event-v2-bridge"
 import { Config } from "@/config/config"
 import { Provider } from "@/provider/provider"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import type { SessionID } from "../../src/session/schema"
 import { ShareNext } from "@/share/share-next"
 import { SessionShareTable } from "@deepagent-code/core/share/sql"
@@ -22,6 +23,9 @@ import { pollWithTimeout, testEffect } from "../lib/effect"
 
 const env = Layer.mergeAll(
   Session.defaultLayer,
+  // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+  // writes hit the session FK.
+  SessionProjector.defaultLayer,
   AccountRepo.defaultLayer,
   Database.defaultLayer,
   NodeFileSystem.layer,
diff --git a/packages/deepagent-code/test/snapshot/snapshot-degraded-attribution.test.ts b/packages/deepagent-code/test/snapshot/snapshot-degraded-attribution.test.ts
new file mode 100644
index 00000000..2c8869f4
--- /dev/null
+++ b/packages/deepagent-code/test/snapshot/snapshot-degraded-attribution.test.ts
@@ -0,0 +1,63 @@
+import { afterEach, describe, expect } from "bun:test"
+import { FSUtil } from "@deepagent-code/core/fs-util"
+import { Effect, Layer } from "effect"
+import { DiffLimits, Snapshot } from "../../src/snapshot"
+import { disposeAllInstances, testInstanceStoreLayer, TestInstance } from "../fixture/fixture"
+import { testEffect } from "../lib/effect"
+
+const it = testEffect(Layer.mergeAll(Snapshot.defaultLayer, FSUtil.defaultLayer, testInstanceStoreLayer))
+
+afterEach(async () => {
+  await disposeAllInstances()
+})
+
+const write = (file: string, content: string | Uint8Array) =>
+  FSUtil.Service.use((fs) => fs.writeWithDirs(file, content))
+
+describe("Snapshot degraded attribution (BUG-407-012 gap C)", () => {
+  it.instance(
+    "trackOutcome attributes a total-size budget overrun with session identity and budget numbers",
+    Effect.gen(function* () {
+      const tmp = yield* TestInstance
+      const snapshot = yield* Snapshot.Service
+      // Oversized single files (> 2MB capture exclusion) are DROPPED from capture instead
+      // of degrading it, so a degraded outcome requires in-budget files whose TOTAL
+      // crosses captureTotalBytes: 33 files of exactly 2MB = 66MB > 64MB.
+      yield* write(`${tmp.directory}/small.txt`, "within budget")
+      const chunk = "x".repeat(2 * 1024 * 1024)
+      const fileCount = Math.floor(DiffLimits.captureTotalBytes / (2 * 1024 * 1024)) + 1
+      for (const index of Array.from({ length: fileCount }, (_, value) => value)) {
+        yield* write(`${tmp.directory}/bulk-${index}.bin`, chunk)
+      }
+
+      const outcome = yield* snapshot.trackOutcome({ sessionId: "ses_attribution", activityId: "act_attribution" })
+      expect(outcome.hash).toBeUndefined()
+      expect(outcome.degraded).toMatchObject({
+        reason: "snapshot_source_budget_exceeded",
+        sessionId: "ses_attribution",
+        activityId: "act_attribution",
+        totalLimit: DiffLimits.captureTotalBytes,
+        fileLimit: DiffLimits.captureFileBytes,
+      })
+      expect(typeof outcome.degraded?.totalBytes).toBe("number")
+
+      // track() degrades to undefined (callers keep their legacy behavior).
+      expect(yield* snapshot.track({ sessionId: "ses_attribution" })).toBeUndefined()
+    }),
+    { git: true },
+  )
+
+  it.instance(
+    "trackOutcome still returns a hash and no degradation within budget",
+    Effect.gen(function* () {
+      const tmp = yield* TestInstance
+      const snapshot = yield* Snapshot.Service
+      yield* write(`${tmp.directory}/small.txt`, "within budget")
+
+      const outcome = yield* snapshot.trackOutcome({ sessionId: "ses_ok", activityId: "act_ok" })
+      expect(outcome.degraded).toBeUndefined()
+      expect(outcome.hash).toBeTruthy()
+    }),
+    { git: true },
+  )
+})
diff --git a/packages/deepagent-code/test/snapshot/snapshot.test.ts b/packages/deepagent-code/test/snapshot/snapshot.test.ts
index 9e2f9e05..36eac3ba 100644
--- a/packages/deepagent-code/test/snapshot/snapshot.test.ts
+++ b/packages/deepagent-code/test/snapshot/snapshot.test.ts
@@ -1097,6 +1097,42 @@ it.instance(
   { git: true },
 )
 
+// BUG-407-010 §14.2 release acceptance: a 4,500-file discovery must trip the candidate budget
+// deterministically at incident scale, keeping the returned file list and manifest below the
+// approved caps instead of materializing the full discovery output.
+it.instance(
+  "diffFull and diffManifest trip the discovery budget at 4500-file incident scale",
+  withTrackedSnapshot(({ tmp, snapshot, before }) =>
+    Effect.gen(function* () {
+      const incidentFiles = 4_500
+      yield* Effect.forEach(
+        Array.from({ length: incidentFiles }, (_, index) => index),
+        (index) => write(`${tmp.path}/incident/file-${String(index).padStart(4, "0")}.txt`, "content"),
+        { concurrency: 100, discard: true },
+      )
+      const after = yield* snapshot.track()
+      expect(after).toBeTruthy()
+
+      const diffs = yield* snapshot.diffFull(before, after!)
+      expect(diffs.length).toBe(Snapshot.DiffLimits.candidateFiles)
+      expect(diffs[0].file).toBe("incident/file-0000.txt")
+      expect(diffs.at(-1)?.file).toBe("incident/file-0999.txt")
+
+      const manifest = yield* snapshot.diffManifest(before, after!)
+      expect(manifest.completeness).toBe("truncated")
+      expect(manifest.truncationReasons).toContain("candidate_file_limit")
+      expect(manifest.files).toHaveLength(Snapshot.DiffLimits.candidateFiles)
+      expect(manifest.files.every((item) => item.patch === undefined)).toBe(true)
+      expect(manifest.totalFiles).toBe(incidentFiles)
+      expect(manifest.totalFilesExact).toBe(true)
+      expect(manifest.statisticsExact).toBe(false)
+      expect(Buffer.byteLength(JSON.stringify(manifest.files))).toBeLessThanOrEqual(Snapshot.DiffLimits.manifestBytes)
+    }),
+  ),
+  { git: true },
+  30_000,
+)
+
 it.instance(
   "diffManifest preserves visible statuses after a large ignored prefix",
   withTrackedSnapshot(({ tmp, snapshot, before }) =>
diff --git a/packages/deepagent-code/test/tool/degraded-text-recovery.test.ts b/packages/deepagent-code/test/tool/degraded-text-recovery.test.ts
new file mode 100644
index 00000000..8bf90c0c
--- /dev/null
+++ b/packages/deepagent-code/test/tool/degraded-text-recovery.test.ts
@@ -0,0 +1,312 @@
+/**
+ * QUAL-005 (BUG-405-011 residue): degraded_text crash recovery + idempotent foreground metadata
+ * repair, driven through the real task-run state machine (admit → claim → start → research →
+ * finalize → seal evidence). No terminal task_run rows are inserted directly.
+ *
+ * Covers:
+ *   1. recoverExpiredTaskRuns recovers a finalizing run whose executor crashed AFTER sealing its
+ *      degraded_text receipt (persistDegradedStructuredOutput): the durable result must survive
+ *      as completed/structured_output_degraded_text instead of being destroyed as
+ *      execution_lease_expired. Recovered completions are excluded from the returned runs so the
+ *      notification pump never projects them as expired errors.
+ *   2. The idempotent foreground metadata repair (repairDurableSettledRunProjections) projects the
+ *      recovered completion into the child session metadata exactly once.
+ *   3. Unsealed finalizing runs still settle as failed/execution_lease_expired (prior behavior).
+ *   4. Background delivery mode: recovery completes the run and enqueues the terminal
+ *      notification outbox entry.
+ */
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { eq, sql } from "drizzle-orm"
+import { Database } from "@deepagent-code/core/database/database"
+import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
+import { ProjectV2 } from "@deepagent-code/core/project"
+import { ProjectTable } from "@deepagent-code/core/project/sql"
+import { AbsolutePath } from "@deepagent-code/core/schema"
+import {
+  SessionTable,
+  TaskNotificationOutboxTable,
+  TaskRunEventTable,
+  TaskRunTable,
+} from "@deepagent-code/core/session/sql"
+import { Session } from "../../src/session/session"
+import { MessageID, SessionID } from "../../src/session/schema"
+import {
+  admitTaskRun,
+  claimTaskProvisioning,
+  markTaskFinalizing,
+  markTaskResearchCompleted,
+  recoverExpiredTaskRuns,
+  startTaskRun,
+} from "../../src/tool/task-run"
+import {
+  makeDegradedStructuredOutput,
+  persistDegradedStructuredOutput,
+} from "../../src/tool/task-structured-output-evidence"
+import { repairDurableSettledRunProjections } from "../../src/tool/task"
+import { testEffect } from "../lib/effect"
+
+const database = Layer.mergeAll(Database.layerFromPath(":memory:"), CrossSpawnSpawner.defaultLayer)
+const it = testEffect(database)
+const directory = "/project"
+const parentSessionID = SessionID.make("ses_degraded_recovery_parent")
+
+const contract = {
+  schema: {
+    type: "object",
+    properties: { result: { type: "string" } },
+    required: ["result"],
+    additionalProperties: false,
+  },
+  allowTextFallback: true,
+  receiptVersion: 1 as const,
+  maxAttempts: 2 as const,
+}
+
+const receipt = { attempt: 2, transport: "degraded_text", reason: "structured_output_missing" } as const
+const researchText = "persisted degraded research"
+const degradedOutput = makeDegradedStructuredOutput(researchText, receipt)
+
+const setup = Effect.gen(function* () {
+  const { db } = yield* Database.Service
+  yield* db
+    .insert(ProjectTable)
+    .values({ id: ProjectV2.ID.global, worktree: AbsolutePath.make("/project"), sandboxes: [] })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+  yield* db
+    .insert(SessionTable)
+    .values({
+      id: parentSessionID,
+      project_id: ProjectV2.ID.global,
+      slug: "degraded-recovery-parent",
+      directory,
+      title: "parent",
+      version: "test",
+    })
+    .onConflictDoNothing()
+    .run()
+    .pipe(Effect.orDie)
+})
+
+/**
+ * Drives the real state machine to the exact crash window: the executor finished research,
+ * entered finalize, and persisted the raw result message. The caller decides whether the degraded
+ * receipt gets sealed before the simulated crash.
+ */
+const driveToFinalizing = (suffix: string, deliveryMode: "foreground" | "background" = "foreground") =>
+  Effect.gen(function* () {
+    yield* setup
+    const time = Date.now()
+    const admission = yield* admitTaskRun({
+      parentSessionID,
+      parentMessageID: MessageID.ascending(`msg_degraded_${suffix}`),
+      toolCallID: `call_degraded_${suffix}`,
+      request: { prompt: "research", subagent_type: "researcher" },
+      deliveryMode,
+      executionSpec: {
+        prompt: { text: "research" },
+        agent: "researcher",
+        model: { providerID: "test", modelID: "test" },
+        structuredOutput: contract,
+      },
+    })
+    const claimed = (yield* claimTaskProvisioning({
+      run: admission.run,
+      owner: "worker",
+      now: time,
+      leaseMs: 60_000,
+    }))!
+    const running = (yield* startTaskRun(claimed, "worker", time + 1, 60_000))!
+    const { db } = yield* Database.Service
+    const rawMessageID = MessageID.ascending(`msg_degraded_raw_${suffix}`)
+    yield* db.run(sql`
+      INSERT INTO session (id, project_id, slug, directory, title, version, time_created, time_updated)
+      VALUES (
+        ${running.childSessionID}, ${ProjectV2.ID.global},
+        ${`degraded-${suffix}`}, ${directory}, 'child', 'test', ${time}, ${time}
+      )
+    `)
+    yield* db.run(sql`
+      INSERT INTO message (id, session_id, time_created, time_updated, data)
+      VALUES (${rawMessageID}, ${running.childSessionID}, ${time + 2}, ${time + 2}, '{"role":"assistant"}')
+    `)
+    yield* db.run(sql`
+      INSERT INTO part (id, message_id, session_id, time_created, time_updated, data)
+      VALUES (
+        ${`prt_degraded_${suffix}`}, ${rawMessageID}, ${running.childSessionID},
+        ${time + 2}, ${time + 2}, ${JSON.stringify({ type: "text", text: researchText })}
+      )
+    `)
+    yield* markTaskResearchCompleted(running, "worker", rawMessageID, time + 2)
+    yield* markTaskFinalizing(running, "worker", receipt.attempt, rawMessageID, time + 3)
+    return { time, run: running, rawMessageID }
+  })
+
+describe("tool.degraded-text-recovery", () => {
+  it.effect("recovers a sealed degraded_text completion and repairs foreground metadata idempotently", () =>
+    Effect.gen(function* () {
+      const { time, run, rawMessageID } = yield* driveToFinalizing("sealed")
+
+      // Seal the degraded receipt, then crash without settling (the lease simply expires).
+      yield* persistDegradedStructuredOutput({
+        runID: run.runID,
+        childSessionID: run.childSessionID,
+        ownerToken: "worker",
+        claimGeneration: run.claimGeneration,
+        sourceMessageID: rawMessageID,
+        contract,
+        receipt,
+        output: degradedOutput,
+        now: time + 4,
+      })
+      const recovered = yield* recoverExpiredTaskRuns({ directory, now: time + 120_000 })
+
+      // Recovered completions are NOT surfaced for expired-error projection.
+      expect(recovered).toEqual([])
+
+      const { db } = yield* Database.Service
+      const row = (yield* db
+        .select()
+        .from(TaskRunTable)
+        .where(eq(TaskRunTable.run_id, run.runID))
+        .get()
+        .pipe(Effect.orDie))!
+      expect(row.state).toBe("completed")
+      expect(row.phase).toBe("settled")
+      expect(row.control_state).toBe("closed")
+      expect(row.reason).toBe("structured_output_degraded_text")
+      expect(row.output).toBe(degradedOutput)
+      expect(row.structured_output_receipt).toEqual(receipt)
+      expect(row.structured_result_message_id).toBeNull()
+      expect(row.execution_owner).toBeNull()
+      expect(row.time_settled).toBe(time + 120_000)
+
+      expect(
+        yield* db
+          .select({ type: TaskRunEventTable.type, reason: TaskRunEventTable.reason })
+          .from(TaskRunEventTable)
+          .where(eq(TaskRunEventTable.run_id, run.runID))
+          .all()
+          .pipe(Effect.orDie),
+      ).toContainEqual({ type: "structured_response_recovered", reason: "persisted_degraded_receipt" })
+
+      // Idempotent: a second recovery pass finds nothing and changes nothing.
+      expect(yield* recoverExpiredTaskRuns({ directory, now: time + 240_000 })).toEqual([])
+      expect(
+        ((yield* db
+          .select({ version: TaskRunTable.version })
+          .from(TaskRunTable)
+          .where(eq(TaskRunTable.run_id, run.runID))
+          .get()
+          .pipe(Effect.orDie)) as { version: number }).version,
+      ).toBe(row.version)
+
+      // Foreground metadata repair: the child session still believes it is finalizing; the
+      // durable-cp startup repair must project the recovered completion exactly once.
+      const holder: { info: Session.Info } = {
+        info: {
+          id: run.childSessionID,
+          slug: "degraded-child",
+          projectID: ProjectV2.ID.global,
+          directory,
+          parentID: parentSessionID,
+          title: "child",
+          version: "test",
+          metadata: {
+            deepagent: {
+              subagent: {
+                finished: false,
+                state: "finalizing",
+                phase: "finalize",
+                attempts: receipt.attempt,
+                run_id: run.runID,
+                generation: run.generation,
+                raw_result_ref: rawMessageID,
+              },
+            },
+          },
+          time: { created: time, updated: time + 4 },
+        },
+      }
+      const sessions = {
+        get: () => Effect.succeed(holder.info),
+        setMetadata: (input: { readonly metadata: Session.Info["metadata"] }) =>
+          Effect.sync(() => {
+            holder.info = { ...holder.info, metadata: input.metadata }
+          }),
+      } as unknown as Session.Interface
+
+      expect(yield* repairDurableSettledRunProjections(sessions, { directory })).toBe(1)
+      expect(yield* repairDurableSettledRunProjections(sessions, { directory })).toBe(0)
+      expect(holder.info.metadata?.deepagent).toEqual({
+        subagent: {
+          finished: true,
+          state: "completed",
+          phase: "settled",
+          run_id: run.runID,
+          generation: run.generation,
+          settled_at: time + 120_000,
+          reason: "structured_output_degraded_text",
+          attempts: receipt.attempt,
+          raw_result_ref: rawMessageID,
+          structured_output: receipt,
+        },
+      })
+    }),
+  )
+
+  it.effect("still settles unsealed finalizing runs as execution_lease_expired", () =>
+    Effect.gen(function* () {
+      const { time, run } = yield* driveToFinalizing("unsealed")
+
+      // Crash without sealing any receipt — the pre-existing failure path must be preserved.
+      const recovered = yield* recoverExpiredTaskRuns({ directory, now: time + 120_000 })
+      expect(recovered).toHaveLength(1)
+      expect(recovered[0].runID).toBe(run.runID)
+      expect(recovered[0].state).toBe("failed")
+      expect(recovered[0].reason).toBe("execution_lease_expired")
+
+      const { db } = yield* Database.Service
+      expect(
+        yield* db.select().from(TaskNotificationOutboxTable).all().pipe(Effect.orDie),
+      ).toHaveLength(1)
+    }),
+  )
+
+  it.effect("recovers a sealed background completion with its terminal notification", () =>
+    Effect.gen(function* () {
+      const { time, run, rawMessageID } = yield* driveToFinalizing("background", "background")
+      yield* persistDegradedStructuredOutput({
+        runID: run.runID,
+        childSessionID: run.childSessionID,
+        ownerToken: "worker",
+        claimGeneration: run.claimGeneration,
+        sourceMessageID: rawMessageID,
+        contract,
+        receipt,
+        output: degradedOutput,
+        now: time + 4,
+      })
+
+      expect(yield* recoverExpiredTaskRuns({ directory, now: time + 120_000 })).toEqual([])
+
+      const { db } = yield* Database.Service
+      const row = (yield* db
+        .select()
+        .from(TaskRunTable)
+        .where(eq(TaskRunTable.run_id, run.runID))
+        .get()
+        .pipe(Effect.orDie))!
+      expect(row.state).toBe("completed")
+      expect(row.reason).toBe("structured_output_degraded_text")
+      expect(row.structured_output_receipt).toEqual(receipt)
+
+      const notifications = yield* db.select().from(TaskNotificationOutboxTable).all().pipe(Effect.orDie)
+      expect(notifications).toHaveLength(1)
+      expect(notifications[0].payload.text).toContain("Background task completed")
+      expect(notifications[0].payload.text).toContain(run.childSessionID)
+    }),
+  )
+})
diff --git a/packages/deepagent-code/test/tool/output-degeneration.test.ts b/packages/deepagent-code/test/tool/output-degeneration.test.ts
new file mode 100644
index 00000000..bc5af5e4
--- /dev/null
+++ b/packages/deepagent-code/test/tool/output-degeneration.test.ts
@@ -0,0 +1,177 @@
+/**
+ * QUAL-005 (BUG-407-008 residue): deterministic coverage for OutputDegenerationError.
+ *
+ * The processor (session/processor.ts) throws SessionV1.OutputDegenerationError in enforce mode
+ * when the reasoning N-gram degeneration detector confirms a stuck/repetitive stream, and the
+ * retry policy (session/retry.ts) special-cases it as non-retryable. Before this file, the error
+ * had zero dedicated tests. These tests pin:
+ *   1. the error contract (type + detector verdict fields),
+ *   2. the retry special-case (never retryable),
+ *   3. bounded termination — the retry harness stops after the single failed attempt instead of
+ *      retrying forever (contrast case proves the harness would retry a transient 5xx error).
+ */
+import { describe, expect } from "bun:test"
+import { Effect, Exit, Schedule, Schema } from "effect"
+import { SessionV1 } from "@deepagent-code/core/v1/session"
+import type { NamedError } from "@deepagent-code/core/util/error"
+import { SessionRetry } from "../../src/session/retry"
+import { MessageV2 } from "../../src/session/message-v2"
+import { ProviderV2 } from "@deepagent-code/core/provider"
+import { it } from "../lib/effect"
+
+const provider = "test"
+
+// Deterministic degenerate-output path: the processor's detector enables above 20_000 chars and
+// confirms degeneration when the repeated N-gram fraction exceeds 0.7. Reproduce the same metric
+// over a highly repetitive stream so the constructed verdict is grounded in a real degenerate
+// payload rather than arbitrary numbers.
+const DEGENERATION_N = 4
+const degeneratePayload = "degenerate-loop ".repeat(1_500) // 24_000 chars of repetitive text
+
+function repetitionRatio(text: string) {
+  const counts = new Map<string, number>()
+  for (let i = 0; i <= text.length - DEGENERATION_N; i++) {
+    const ngram = text.slice(i, i + DEGENERATION_N)
+    counts.set(ngram, (counts.get(ngram) ?? 0) + 1)
+  }
+  let total = 0
+  let repeated = 0
+  for (const count of counts.values()) {
+    total += count
+    if (count > 1) repeated += count - 1
+  }
+  return total === 0 ? 0 : repeated / total
+}
+
+function degenerationError() {
+  return new SessionV1.OutputDegenerationError({
+    chars: degeneratePayload.length,
+    ratio: repetitionRatio(degeneratePayload),
+    detectorVersion: "1.0",
+  })
+}
+
+type Err = ReturnType<NamedError["toObject"]>
+
+const policy = (attempts: { count: number }) =>
+  SessionRetry.policy({
+    provider,
+    parse: (error) => error as Err,
+    set: () =>
+      Effect.sync(() => {
+        attempts.count += 1
+      }),
+  })
+
+describe("tool.output-degeneration", () => {
+  it.effect("degenerate payload exceeds the detector thresholds", () =>
+    Effect.sync(() => {
+      expect(degeneratePayload.length).toBeGreaterThan(20_000)
+      expect(repetitionRatio(degeneratePayload)).toBeGreaterThan(0.7)
+    }),
+  )
+
+  it.effect("carries the detector verdict with the processor's error contract", () =>
+    Effect.sync(() => {
+      const error = degenerationError()
+      expect(SessionV1.OutputDegenerationError.isInstance(error)).toBe(true)
+      expect(error.toObject().name).toBe("OutputDegenerationError")
+      expect(SessionV1.OutputDegenerationError.isInstance(error.toObject())).toBe(true)
+      expect(error.data.chars).toBe(degeneratePayload.length)
+      expect(error.data.ratio).toBeGreaterThan(0.7)
+      expect(error.data.detectorVersion).toBe("1.0")
+      // Distinct error types must not be confused with the degeneration verdict.
+      expect(SessionV1.ContextOverflowError.isInstance(error)).toBe(false)
+      expect(SessionV1.APIError.isInstance(error)).toBe(false)
+    }),
+  )
+
+  it.effect("retry special-case never treats degeneration as retryable", () =>
+    Effect.sync(() => {
+      const error = degenerationError()
+      expect(SessionRetry.retryable(error.toObject(), provider)).toBeUndefined()
+      // A transient 5xx failure stays retryable — the special case is specific, not a blanket
+      // non-retry fallback.
+      const retryable = Schema.decodeUnknownSync(SessionV1.APIError.Schema)(
+        new SessionV1.APIError({
+          message: "Internal server error",
+          isRetryable: false,
+          statusCode: 500,
+          responseHeaders: { "retry-after-ms": "0" },
+        }).toObject(),
+      )
+      expect(SessionRetry.retryable(retryable, provider)).toEqual({ message: "Internal server error" })
+    }),
+  )
+
+  it.effect("bounded termination: the retry harness stops after the single failed attempt", () =>
+    Effect.gen(function* () {
+      const error = degenerationError()
+      let executions = 0
+      const attempts = { count: 0 }
+      const failing = Effect.gen(function* () {
+        executions += 1
+        return yield* Effect.fail(error.toObject())
+      })
+
+      let captured: unknown = undefined
+      yield* failing.pipe(
+        Effect.retry(policy(attempts)),
+        Effect.catch((error) =>
+          Effect.sync(() => {
+            captured = error
+          }),
+        ),
+      )
+
+      // No retry scheduled, no status published, exactly one provider attempt, original verdict.
+      expect(executions).toBe(1)
+      expect(attempts.count).toBe(0)
+      expect(SessionV1.OutputDegenerationError.isInstance(captured)).toBe(true)
+    }),
+  )
+
+  it.effect("contrast: a retryable provider error does retry under the same harness", () =>
+    Effect.gen(function* () {
+      const retryable = Schema.decodeUnknownSync(SessionV1.APIError.Schema)(
+        new SessionV1.APIError({
+          message: "Internal server error",
+          isRetryable: false,
+          statusCode: 500,
+          responseHeaders: { "retry-after-ms": "0" },
+        }).toObject(),
+      )
+      let executions = 0
+      const attempts = { count: 0 }
+      const failing = Effect.gen(function* () {
+        executions += 1
+        return yield* Effect.fail(retryable)
+      })
+
+      // Bounded by Schedule.recurs(2) so the contrast cannot loop forever: exactly two retries
+      // (three executions). The policy's decision is consulted once more after the recurs bound
+      // trips, so its `set` callback observes three decisions while only two retries execute.
+      const exit = yield* failing.pipe(
+        Effect.retry(policy(attempts).pipe(Schedule.both(Schedule.recurs(2)))),
+        Effect.exit,
+      )
+
+      expect(Exit.isFailure(exit)).toBe(true)
+      expect(executions).toBe(3)
+      expect(attempts.count).toBe(3)
+    }),
+  )
+
+  it.effect("assistant error classification preserves the degeneration verdict untouched", () =>
+    Effect.sync(() => {
+      const error = degenerationError()
+      const classified = MessageV2.fromError(error, { providerID: ProviderV2.ID.make(provider) })
+      expect(SessionV1.OutputDegenerationError.isInstance(classified)).toBe(true)
+      if (SessionV1.OutputDegenerationError.isInstance(classified)) {
+        expect(classified.data.chars).toBe(error.data.chars)
+        expect(classified.data.ratio).toBe(error.data.ratio)
+        expect(classified.data.detectorVersion).toBe("1.0")
+      }
+    }),
+  )
+})
diff --git a/packages/deepagent-code/test/tool/pr-finalize.test.ts b/packages/deepagent-code/test/tool/pr-finalize.test.ts
index 3f5a653e..3b7496c7 100644
--- a/packages/deepagent-code/test/tool/pr-finalize.test.ts
+++ b/packages/deepagent-code/test/tool/pr-finalize.test.ts
@@ -14,6 +14,7 @@ import { EventV2Bridge } from "@/event-v2-bridge"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { Git } from "@/git"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { createAgentWorktree } from "@/session/agent-worktree"
 import { SessionRunState } from "@/session/run-state"
 import { SessionStatus } from "@/session/status"
@@ -45,6 +46,9 @@ const layer = Layer.mergeAll(
   Config.defaultLayer,
   CrossSpawnSpawner.defaultLayer,
   Session.defaultLayer,
+  // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+  // writes hit the session FK.
+  SessionProjector.defaultLayer,
   SessionRunState.defaultLayer,
   SessionStatus.defaultLayer,
   Truncate.defaultLayer,
diff --git a/packages/deepagent-code/test/tool/registry.test.ts b/packages/deepagent-code/test/tool/registry.test.ts
index 02e02333..a9812f76 100644
--- a/packages/deepagent-code/test/tool/registry.test.ts
+++ b/packages/deepagent-code/test/tool/registry.test.ts
@@ -145,6 +145,10 @@ const withBrokenPlugin = testEffect(
 const itNoCodeIntel = testEffect(
   Layer.mergeAll(registryLayer({ flags: { codeIntelTool: false } }), node, Agent.defaultLayer),
 )
+// FEAT-011 T4: the activity facade tools are staged behind DEEPAGENT_CODE_ACTIVITY_FACADE.
+const itActivityFacade = testEffect(
+  Layer.mergeAll(registryLayer({ flags: { activityFacade: true } }), node, Agent.defaultLayer),
+)
 const itContextToolsV2 = testEffect(
   Layer.mergeAll(
     registryLayer({
@@ -243,6 +247,94 @@ describe("tool.registry", () => {
     }),
   )
 
+  // FEAT-011 T4 — flag-gated visibility. The facade flag defaults OFF (staged), so the default
+  // registry output must carry ZERO activity_* tools (byte-identical visibility to pre-facade).
+  it.instance("hides all activity facade tools while DEEPAGENT_CODE_ACTIVITY_FACADE stays staged off", () =>
+    Effect.gen(function* () {
+      const registry = yield* ToolRegistry.Service
+      const agents = yield* Agent.Service
+      const build = yield* agents.get("build")
+
+      const ids = yield* registry.ids()
+      expect(ids).not.toContain("activity_start")
+      expect(ids).not.toContain("activity_status")
+      expect(ids).not.toContain("activity_result")
+      expect(ids).not.toContain("activity_control")
+
+      const projected = (yield* registry.tools({
+        providerID: ProviderV2.ID.make("deepagent-code"),
+        modelID: ModelV2.ID.make("test"),
+        agent: build,
+      })).map((tool) => tool.id)
+      expect(projected.filter((id) => id.startsWith("activity_"))).toHaveLength(0)
+    }),
+    30_000,
+  )
+
+  itActivityFacade.instance("exposes activity facade tools to primary agents only when the flag is on", () =>
+    Effect.gen(function* () {
+      const registry = yield* ToolRegistry.Service
+      const agents = yield* Agent.Service
+      const build = yield* agents.get("build")
+      const reviewer = yield* agents.get("reviewer")
+
+      const primary = (yield* registry.tools({
+        providerID: ProviderV2.ID.make("deepagent-code"),
+        modelID: ModelV2.ID.make("test"),
+        agent: build,
+      })).map((tool) => tool.id)
+      expect(primary).toContain("activity_start")
+      expect(primary).toContain("activity_status")
+      expect(primary).toContain("activity_result")
+      expect(primary).toContain("activity_control")
+
+      // Non-primary agents never see the facade (mirrors the pr_finalize projection fence).
+      const subagent = (yield* registry.tools({
+        providerID: ProviderV2.ID.make("deepagent-code"),
+        modelID: ModelV2.ID.make("test"),
+        agent: reviewer,
+      })).map((tool) => tool.id)
+      expect(subagent.filter((id) => id.startsWith("activity_"))).toHaveLength(0)
+    }),
+    30_000,
+  )
+
+  itActivityFacade.instance("activity facade tool schemas stay bounded (T6)", () =>
+    Effect.gen(function* () {
+      const registry = yield* ToolRegistry.Service
+      const all = yield* registry.all()
+      const status = all.find((tool) => tool.id === "activity_status")
+      const start = all.find((tool) => tool.id === "activity_start")
+      if (!status || !start) throw new Error("activity facade tools missing from registry")
+
+      // status limit: hard ceiling 20.
+      expect(Result.isSuccess(Schema.decodeUnknownResult(status.parameters)({ limit: 20 }))).toBe(true)
+      expect(Result.isSuccess(Schema.decodeUnknownResult(status.parameters)({ limit: 21 }))).toBe(false)
+      expect(Result.isSuccess(Schema.decodeUnknownResult(status.parameters)({ limit: 0 }))).toBe(false)
+
+      // start: subkind is a closed enum, objective is required.
+      expect(Result.isSuccess(Schema.decodeUnknownResult(start.parameters)({ subkind: "task", objective: "x" }))).toBe(
+        true,
+      )
+      expect(Result.isSuccess(Schema.decodeUnknownResult(start.parameters)({ subkind: "other", objective: "x" }))).toBe(
+        false,
+      )
+      expect(Result.isSuccess(Schema.decodeUnknownResult(start.parameters)({ subkind: "goal" }))).toBe(false)
+
+      // budget fields must be positive integers when supplied.
+      expect(
+        Result.isSuccess(
+          Schema.decodeUnknownResult(start.parameters)({ subkind: "goal", objective: "x", budget: { maxTicks: 5 } }),
+        ),
+      ).toBe(true)
+      expect(
+        Result.isSuccess(
+          Schema.decodeUnknownResult(start.parameters)({ subkind: "goal", objective: "x", budget: { maxTicks: -1 } }),
+        ),
+      ).toBe(false)
+    }),
+  )
+
   it.instance("exposes task status, close, and explicit recovery controls", () =>
     Effect.gen(function* () {
       const registry = yield* ToolRegistry.Service
diff --git a/packages/deepagent-code/test/tool/task-read.test.ts b/packages/deepagent-code/test/tool/task-read.test.ts
index e7a7a35a..ae72713c 100644
--- a/packages/deepagent-code/test/tool/task-read.test.ts
+++ b/packages/deepagent-code/test/tool/task-read.test.ts
@@ -6,6 +6,7 @@ import { EventV2Bridge } from "@/event-v2-bridge"
 import { Config } from "@/config/config"
 import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { SessionRunState } from "@/session/run-state"
 import { SessionStatus } from "@/session/status"
 import { Database } from "@deepagent-code/core/database/database"
@@ -33,6 +34,9 @@ const it = testEffect(
     Config.defaultLayer,
     CrossSpawnSpawner.defaultLayer,
     Session.defaultLayer,
+    // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+    // writes hit the session FK.
+    SessionProjector.defaultLayer,
     SessionRunState.defaultLayer,
     SessionStatus.defaultLayer,
     Truncate.defaultLayer,
diff --git a/packages/deepagent-code/test/tool/task-recovery.test.ts b/packages/deepagent-code/test/tool/task-recovery.test.ts
index fb8d262a..0eb15c54 100644
--- a/packages/deepagent-code/test/tool/task-recovery.test.ts
+++ b/packages/deepagent-code/test/tool/task-recovery.test.ts
@@ -14,6 +14,7 @@ import { ToolRegistry } from "@/tool/registry"
 import { Truncate } from "@/tool/truncate"
 import { and, eq } from "drizzle-orm"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { MessageID } from "@/session/schema"
 import { TaskRecoveryTool } from "@/tool/task_recovery"
 import { testEffect } from "../lib/effect"
@@ -28,6 +29,9 @@ const it = testEffect(
     EventV2Bridge.defaultLayer,
     RuntimeFlags.layer(),
     Session.defaultLayer,
+    // QUAL-007: the core SessionProjector materializes event-created sessions; without it the
+    // TaskRunTable FK to the session row fails.
+    SessionProjector.defaultLayer,
     SessionRunState.defaultLayer,
     SessionStatus.defaultLayer,
     ToolRegistry.defaultLayer,
diff --git a/packages/deepagent-code/test/tool/task-status.test.ts b/packages/deepagent-code/test/tool/task-status.test.ts
index cd3976d5..0d6f3080 100644
--- a/packages/deepagent-code/test/tool/task-status.test.ts
+++ b/packages/deepagent-code/test/tool/task-status.test.ts
@@ -6,6 +6,7 @@ import { EventV2Bridge } from "@/event-v2-bridge"
 import { Config } from "@/config/config"
 import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import { SessionRunState } from "@/session/run-state"
 import { SessionStatus } from "@/session/status"
 import { Database } from "@deepagent-code/core/database/database"
@@ -30,6 +31,9 @@ const it = testEffect(
     Config.defaultLayer,
     CrossSpawnSpawner.defaultLayer,
     Session.defaultLayer,
+    // QUAL-007: the core SessionProjector materializes event-created sessions; without it child
+    // session reads fail with Session not found.
+    SessionProjector.defaultLayer,
     SessionRunState.defaultLayer,
     SessionStatus.defaultLayer,
     Truncate.defaultLayer,
diff --git a/packages/deepagent-code/test/tool/task-takeover.test.ts b/packages/deepagent-code/test/tool/task-takeover.test.ts
index 6da3b8b1..860c8b89 100644
--- a/packages/deepagent-code/test/tool/task-takeover.test.ts
+++ b/packages/deepagent-code/test/tool/task-takeover.test.ts
@@ -9,6 +9,7 @@ import { EventV2Bridge } from "@/event-v2-bridge"
 import { Config } from "@/config/config"
 import { CrossSpawnSpawner } from "@deepagent-code/core/cross-spawn-spawner"
 import { Session } from "@/session/session"
+import { SessionProjector } from "@deepagent-code/core/session/projector"
 import type { SessionPrompt } from "../../src/session/prompt"
 import { MessageID, PartID, SessionID } from "../../src/session/schema"
 import { SessionRunState } from "@/session/run-state"
@@ -36,6 +37,9 @@ const layer = (flags: Partial<RuntimeFlags.Info> = {}) =>
     Config.defaultLayer,
     CrossSpawnSpawner.defaultLayer,
     Session.defaultLayer,
+    // QUAL-007: the core SessionProjector materializes event-created sessions; without it message
+    // writes hit the session FK.
+    SessionProjector.defaultLayer,
     SessionRunState.defaultLayer,
     SessionStatus.defaultLayer,
     Truncate.defaultLayer,
diff --git a/packages/deepagent-code/test/wiki/wiki-events.test.ts b/packages/deepagent-code/test/wiki/wiki-events.test.ts
new file mode 100644
index 00000000..9a6fc151
--- /dev/null
+++ b/packages/deepagent-code/test/wiki/wiki-events.test.ts
@@ -0,0 +1,245 @@
+import { afterEach, describe, expect } from "bun:test"
+import { rmSync } from "node:fs"
+import path from "node:path"
+import { Effect, Layer, Stream } from "effect"
+import { DeepAgentEventBus } from "@deepagent-code/core/deepagent/deepagent-event-bus"
+import { LMNEvents } from "@deepagent-code/core/deepagent/lmn-events"
+import { Database } from "@deepagent-code/core/database/database"
+import { DocumentStore } from "@deepagent-code/core/deepagent/document-store"
+import { Global } from "@deepagent-code/core/global"
+import { WikiService, WikiGraph, EXECUTION_ARCHIVE_TYPES } from "../../src/wiki/wiki-service"
+import * as WikiEvents from "../../src/wiki/wiki-events"
+import { archiveSessionOnCompletion } from "../../src/wiki/session-archive"
+import { EventDrivenArchiver } from "../../src/wiki/event-driven-archiver"
+import { testEffect } from "../lib/effect"
+import { freshStore, knowledgeInput } from "./helpers"
+
+// FEAT-006 — wiki/knowledge change eventing (LMNEvents.WIKI_PAGE_CHANGED):
+//   1. editKnowledge publishes after the governed write commits (type/payload/idempotency key);
+//   2. the same write redelivered (same docId+version) never double-publishes (bus dedup on key);
+//   3. the archive path (archiveSessionOnCompletion) publishes with the `archive` marker in the key;
+//   4. SELF-LOOP isolation: wiki.page.changed is not an archive trigger, and the archiver ignores it;
+//   5. the bus port is injectable (constructor) AND resolvable from the Effect environment (the
+//      production seam — the unmodified wikiEdit handler's runtime provides the bus layer).
+
+const roots: string[] = []
+afterEach(() => {
+  for (const r of roots.splice(0)) rmSync(r, { recursive: true, force: true })
+})
+
+// Seed a session's run-scoped context store (the SAME root archiveSessionOnCompletion persists
+// into) with one trajectory doc, so archival produces a REAL persisted archive page to emit for.
+const seedSessionStore = (sessionID: string) => {
+  const root = path.join(Global.Path.agent.data, "state", "context", sessionID)
+  const store = new DocumentStore(root)
+  store.create({
+    type: "plan",
+    scope: `run:${sessionID}`,
+    body: "goal: ship it",
+    description: "plan",
+    provenance: { source: "runner", run_ref: `run:${sessionID}` },
+  })
+  roots.push(root)
+}
+
+let clock = 0
+const now = () => clock
+const database = Database.layerFromPath(":memory:")
+const busLayer = DeepAgentEventBus.layerWith({ now }).pipe(Layer.provideMerge(database))
+// runLoop:false → no background subscription; handle() is driven directly for the self-loop test.
+const archiverLayer = EventDrivenArchiver.layerWith({ runLoop: false }).pipe(Layer.provideMerge(busLayer))
+const it = testEffect(archiverLayer)
+
+// Every wiki.page.changed event currently on the bus (durable replay — deterministic).
+const replayWikiEvents = Effect.gen(function* () {
+  const bus = yield* DeepAgentEventBus.Service
+  const chunk = yield* Stream.runCollect(bus.replay({ from: 0, type: LMNEvents.WIKI_PAGE_CHANGED }))
+  return Array.from(chunk)
+})
+
+const WORKSPACE = "/tmp/feat-006-ws"
+
+describe("FEAT-006 editKnowledge → wiki.page.changed", () => {
+  it.effect("publishes AFTER a committed edit: type/payload/idempotency key (injected bus port)", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const { store, root } = freshStore()
+      roots.push(root)
+      const k = store.create(knowledgeInput({ body: "v1" }))
+      // explicit port injection (the constructor seam) — workspacePath labels the payload.
+      const service = new WikiService(new WikiGraph([store]), undefined, { bus, workspacePath: WORKSPACE })
+      const page = yield* service.editKnowledge({ docId: k.id, body: "v2 edited", editor: { id: "alice" } })
+      expect(page.version).toBe(2)
+
+      const events = yield* replayWikiEvents
+      expect(events).toHaveLength(1)
+      const ev = events[0]!
+      expect(ev.type).toBe(LMNEvents.WIKI_PAGE_CHANGED)
+      expect(ev.idempotencyKey).toBe(WikiEvents.wikiPageChangedIdempotencyKey({ docId: k.id, version: 2 }))
+      expect(ev.idempotencyKey).toBe(`wiki.page.changed:${k.id}:2`) // docId+version, no archive marker
+      const payload = ev.payload as Record<string, unknown>
+      expect(payload.workspacePath).toBe(WORKSPACE)
+      expect(payload.docId).toBe(k.id)
+      expect(payload.type).toBe("knowledge")
+      expect(payload.version).toBe(2)
+      expect(payload.editor).toBe("alice")
+      expect(payload.archive).toBeUndefined() // a human edit is NOT an archive write
+    }),
+  )
+
+  it.effect("environment seam: no injected port → the bus is resolved from the Effect runtime", () =>
+    Effect.gen(function* () {
+      // The production construction point (handlers/deepagent.ts) passes NO bus — the route runtime
+      // provides DeepAgentEventBus.defaultLayer, and editKnowledge falls back to the environment's
+      // service. This test reproduces that seam exactly: ports carry only workspacePath.
+      const { store, root } = freshStore()
+      roots.push(root)
+      const k = store.create(knowledgeInput({ body: "v1" }))
+      const service = new WikiService(new WikiGraph([store]), undefined, { workspacePath: WORKSPACE })
+      yield* service.editKnowledge({ docId: k.id, body: "v2", editor: { id: "bob" } })
+      const events = yield* replayWikiEvents
+      expect(events).toHaveLength(1)
+      expect((events[0]!.payload as Record<string, unknown>).editor).toBe("bob")
+    }),
+  )
+
+  it.effect("a bus-less edit never fails and never emits (graceful degradation without any bus)", () =>
+    Effect.gen(function* () {
+      // No injected port AND no bus in the environment: run the edit through a bare runtime
+      // (Effect.runPromise in a plain Effect below — no bus layer provided), so resolveBus's
+      // serviceOption sees None. The edit must still commit: publishing is best-effort, never a
+      // dependency of the write itself.
+      const { store, root } = freshStore()
+      roots.push(root)
+      const k = store.create(knowledgeInput({ body: "v1" }))
+      const service = new WikiService(new WikiGraph([store]))
+      const page = yield* Effect.promise(() =>
+        Effect.runPromise(service.editKnowledge({ docId: k.id, body: "v2", editor: { id: "carol" } })),
+      )
+      expect(page.version).toBe(2)
+      expect(store.get(k.id)!.version).toBe(2)
+      // no bus anywhere → nothing was published anywhere this test can see; the write is intact.
+    }),
+  )
+
+  it.effect("idempotency: same docId+version published twice → ONE event (no duplicate)", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const { store, root } = freshStore()
+      roots.push(root)
+      const k = store.create(knowledgeInput({ body: "v1" }))
+      const service = new WikiService(new WikiGraph([store]), undefined, { bus, workspacePath: WORKSPACE })
+      yield* service.editKnowledge({ docId: k.id, body: "v2", editor: { id: "alice" } })
+      // Simulate a redelivery of the SAME committed write (docId+version identical): the publisher
+      // re-emits with the same idempotency key → the bus dedupes, no second event row.
+      yield* WikiEvents.publishWikiPageChanged(bus, {
+        workspacePath: WORKSPACE,
+        docId: k.id,
+        type: "knowledge",
+        version: 2,
+        editor: "alice",
+      })
+      const events = yield* replayWikiEvents
+      expect(events).toHaveLength(1) // deduped on wiki.page.changed:<docId>:2
+      // a GENUINELY new edit bumps the version → a NEW key → a second event (not swallowed).
+      yield* service.editKnowledge({ docId: k.id, body: "v3", editor: { id: "alice" } })
+      expect((yield* replayWikiEvents)).toHaveLength(2)
+    }),
+  )
+})
+
+describe("FEAT-006 archive path → wiki.page.changed (archive marker)", () => {
+  it.effect("archiveSessionOnCompletion publishes with archive:true + `archive:` idempotency key", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const sessionID = "sess-feat006-archive"
+      seedSessionStore(sessionID)
+      const archive = yield* archiveSessionOnCompletion({ workspacePath: WORKSPACE, sessionID, bus })
+      expect(archive).not.toBeNull()
+
+      const events = yield* replayWikiEvents
+      expect(events).toHaveLength(1)
+      const ev = events[0]!
+      expect(ev.type).toBe(LMNEvents.WIKI_PAGE_CHANGED)
+      const payload = ev.payload as Record<string, unknown>
+      expect(payload.archive).toBe(true) // the archive marker
+      expect(payload.sessionID).toBe(sessionID)
+      expect(payload.workspacePath).toBe(WORKSPACE)
+      expect(payload.editor).toBe("system:archiver")
+      expect(payload.type).toBe("context_snapshot") // the persisted archive page's doc type
+      expect(ev.idempotencyKey!.startsWith("wiki.page.changed:archive:")).toBe(true)
+      expect(ev.idempotencyKey).toBe(
+        WikiEvents.wikiPageChangedIdempotencyKey({
+          docId: payload.docId as string,
+          version: payload.version as number,
+          archive: { sessionID },
+        }),
+      )
+    }),
+  )
+
+  it.effect("redelivered archive trigger → SAME docId+version → no duplicate event (idempotent)", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const sessionID = "sess-feat006-redeliver"
+      seedSessionStore(sessionID)
+      yield* archiveSessionOnCompletion({ workspacePath: WORKSPACE, sessionID, bus })
+      // A redelivered session.completed re-runs the archive: the trajectory is unchanged, so
+      // DocumentStore.upsert is a fingerprint no-op (same doc at the same version) → the event's
+      // idempotency key is identical → the bus dedupes.
+      yield* archiveSessionOnCompletion({ workspacePath: WORKSPACE, sessionID, bus })
+      yield* archiveSessionOnCompletion({ workspacePath: WORKSPACE, sessionID, bus })
+      const events = yield* replayWikiEvents
+      expect(events).toHaveLength(1) // three runs, ONE event
+    }),
+  )
+})
+
+describe("FEAT-006 self-loop protection (archiver ⇏ wiki.page.changed ⇏ archiver)", () => {
+  it.effect("isolation proof: wiki.page.changed is NOT an archive trigger; archiver ignores it", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const archiver = yield* EventDrivenArchiver.Service
+      // 1. Type-level isolation: the consumer-type filter is the guard (see LMNEvents comment —
+      //    DLQ_ALERT guards at the producer instead; here the archiver simply never matches).
+      expect(LMNEvents.isArchiveTrigger(LMNEvents.WIKI_PAGE_CHANGED)).toBe(false)
+      // 2. Content-level isolation: the persisted archive page is a context_snapshot — outside
+      //    EXECUTION_ARCHIVE_TYPES — so it could never be folded into a later archive either.
+      expect(EXECUTION_ARCHIVE_TYPES.includes("context_snapshot")).toBe(false)
+      // 3. Behavioral proof: feed a REAL published wiki.page.changed to the archiver's handler —
+      //    it acks it as "not our concern" and produces NO archive.
+      const ev = yield* bus.publish({
+        type: LMNEvents.WIKI_PAGE_CHANGED,
+        source: "system",
+        workspaceID: WORKSPACE,
+        idempotencyKey: "self-loop-1",
+        payload: { workspacePath: WORKSPACE, docId: "doc:knowledge:x", type: "knowledge", version: 2, editor: "alice" },
+      })
+      expect(yield* archiver.handle(ev)).toBe(false) // not an archive trigger → skipped, no write
+    }),
+  )
+
+  it.effect("archiver-driven archive emits wiki.page.changed without re-triggering itself", () =>
+    Effect.gen(function* () {
+      const bus = yield* DeepAgentEventBus.Service
+      const archiver = yield* EventDrivenArchiver.Service
+      const sessionID = "sess-feat006-selfloop"
+      seedSessionStore(sessionID)
+      // Drive the archiver end-to-end: session.completed → archive persist → wiki.page.changed.
+      const trigger = yield* bus.publish({
+        type: LMNEvents.SESSION_COMPLETED,
+        source: "system",
+        workspaceID: WORKSPACE,
+        idempotencyKey: "sc-selfloop",
+        payload: { sessionID, workspacePath: WORKSPACE },
+      })
+      expect(yield* archiver.handle(trigger)).toBe(true) // archive produced (bus injected by layer)
+      const wikiEvents = yield* replayWikiEvents
+      expect(wikiEvents).toHaveLength(1)
+      // The emitted event is inert for the archiver: handle() on it produces nothing.
+      expect(yield* archiver.handle(wikiEvents[0]!)).toBe(false)
+      // …and no SECOND archive-derived event appeared (no cascade, no duplicate).
+      expect((yield* replayWikiEvents)).toHaveLength(1)
+    }),
+  )
+})
diff --git a/packages/desktop/package.json b/packages/desktop/package.json
index b2b71243..8df5a771 100644
--- a/packages/desktop/package.json
+++ b/packages/desktop/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@deepagent-code/desktop",
   "private": true,
-  "version": "1.4.6",
+  "version": "1.4.7",
   "type": "module",
   "license": "AGPL-3.0-or-later",
   "homepage": "https://deepagent-code.ai",
diff --git a/packages/llm/src/protocols/index.ts b/packages/llm/src/protocols/index.ts
index bd8c8d3d..d00d517a 100644
--- a/packages/llm/src/protocols/index.ts
+++ b/packages/llm/src/protocols/index.ts
@@ -3,4 +3,5 @@ export * as BedrockConverse from "./bedrock-converse"
 export * as Gemini from "./gemini"
 export * as OpenAIChat from "./openai-chat"
 export * as OpenAICompatibleChat from "./openai-compatible-chat"
+export * as OpenAICompatibleResponses from "./openai-compatible-responses"
 export * as OpenAIResponses from "./openai-responses"
diff --git a/packages/llm/src/protocols/openai-compatible-responses.ts b/packages/llm/src/protocols/openai-compatible-responses.ts
new file mode 100644
index 00000000..f5f5bc27
--- /dev/null
+++ b/packages/llm/src/protocols/openai-compatible-responses.ts
@@ -0,0 +1,29 @@
+import { Route, type RouteRoutedModelInput } from "../route/client"
+import { Endpoint } from "../route/endpoint"
+import { Framing } from "../route/framing"
+import * as OpenAIResponses from "./openai-responses"
+
+const ADAPTER = "openai-compatible-responses"
+
+export type OpenAICompatibleResponsesModelInput = RouteRoutedModelInput
+
+/**
+ * Route for non-OpenAI providers that expose an OpenAI Responses-compatible
+ * `/responses` endpoint (e.g. DeepSeek). Reuses `OpenAIResponses.protocol`
+ * end-to-end and overrides only the route id so providers can be resolved
+ * per-family without colliding with native OpenAI.
+ *
+ * It intentionally does NOT reuse `OpenAIResponses.route`, which hardcodes
+ * `provider: "openai"`; `Route.model` prefers the route-owned provider
+ * (see route/client.ts `makeRouteModel`) and would mis-attribute a DeepSeek
+ * model to OpenAI. Provider helpers configure the route endpoint and provider
+ * before model selection.
+ */
+export const route = Route.make({
+  id: ADAPTER,
+  protocol: OpenAIResponses.protocol,
+  endpoint: Endpoint.path("/responses"),
+  framing: Framing.sse,
+})
+
+export * as OpenAICompatibleResponses from "./openai-compatible-responses"
diff --git a/packages/llm/src/protocols/openai-responses.ts b/packages/llm/src/protocols/openai-responses.ts
index 42e0bbe2..52133025 100644
--- a/packages/llm/src/protocols/openai-responses.ts
+++ b/packages/llm/src/protocols/openai-responses.ts
@@ -2,6 +2,7 @@ import { Effect, Schema } from "effect"
 import { Route } from "../route/client"
 import { Auth } from "../route/auth"
 import { Endpoint } from "../route/endpoint"
+import { RequestExecutor } from "../route/executor"
 import { HttpTransport, WebSocketTransport } from "../route/transport"
 import { Protocol } from "../route/protocol"
 import {
@@ -9,6 +10,7 @@ import {
   ToolDefinition,
   Usage,
   type FinishReason,
+  type LLMError,
   type LLMRequest,
   type ProviderMetadata,
   type ReasoningPart,
@@ -27,6 +29,21 @@ const ADAPTER = "openai-responses"
 export const DEFAULT_BASE_URL = "https://api.openai.com/v1"
 export const PATH = "/responses"
 
+// UPD-005 (/responses/compact): OpenAI-specific UNARY endpoint that compacts
+// conversation history server-side and returns a new item list. Served from
+// the same base URL as `/responses`. The Protocol/Route abstraction is
+// streaming-only (SSE state machine), so compact is deliberately implemented
+// as a standalone unary client below instead of extending Protocol.make —
+// that keeps the blast radius inside this single file.
+export const COMPACT_PATH = "/responses/compact"
+
+/**
+ * UPD-005: whether this protocol's canonical provider serves `/responses/compact`.
+ * True only for the OpenAI Responses route; OpenAI-compatible families must
+ * opt in per profile (`supportsResponsesCompact`) and are NOT assumed to.
+ */
+export const supportsRemoteCompaction = true
+
 // =============================================================================
 // Request Body Schema
 // =============================================================================
@@ -63,6 +80,15 @@ const OpenAIResponsesItemReference = Schema.Struct({
   id: Schema.String,
 })
 
+// UPD-005 (/responses/compact): a prior server-side compaction's opaque
+// encrypted context. Sent ahead of the new messages so the provider can
+// expand it during the next compaction. Never interpreted client-side.
+const OpenAIResponsesCompactionItem = Schema.Struct({
+  type: Schema.tag("compaction"),
+  encrypted_content: Schema.String,
+})
+type OpenAIResponsesCompactionItem = Schema.Schema.Type<typeof OpenAIResponsesCompactionItem>
+
 // `function_call_output.output` accepts either a plain string or an ordered
 // array of content items so tools can return images in addition to text.
 // https://platform.openai.com/docs/api-reference/responses/object
@@ -75,6 +101,7 @@ const OpenAIResponsesFunctionCallOutput = Schema.Union([
 
 const OpenAIResponsesInputItem = Schema.Union([
   Schema.Struct({ role: Schema.tag("system"), content: Schema.String }),
+  OpenAIResponsesCompactionItem,
   Schema.Struct({ role: Schema.tag("user"), content: Schema.Array(OpenAIResponsesInputContent) }),
   Schema.Struct({ role: Schema.tag("assistant"), content: Schema.Array(OpenAIResponsesOutputText) }),
   OpenAIResponsesReasoningItem,
@@ -168,6 +195,15 @@ const OpenAIResponsesCoreFields = {
   text: Schema.optional(
     Schema.Struct({
       verbosity: Schema.optional(OpenAIOptions.OpenAITextVerbosity),
+      // UPD-002: wire-level structured output (json_schema constrained text).
+      format: Schema.optional(
+        Schema.Struct({
+          type: Schema.Literal("json_schema"),
+          name: Schema.String,
+          schema: Schema.Record(Schema.String, Schema.Unknown),
+          strict: Schema.optional(Schema.Boolean),
+        }),
+      ),
     }),
   ),
   max_output_tokens: Schema.optional(Schema.Number),
@@ -267,6 +303,12 @@ interface ParserState {
   readonly lifecycle: Lifecycle.State
   readonly reasoningItems: Readonly<Record<string, ReasoningStreamItem>>
   readonly store: boolean | undefined
+  // UPD-002: when the request asked for wire-level json_schema output, this
+  // holds the requested format name and the parser accumulates the streamed
+  // output text so `response.completed` can verify the provider actually
+  // returned well-formed JSON (failure ⇒ InvalidProviderOutput).
+  readonly jsonFormatName: string | undefined
+  readonly accumulatedText: string
 }
 
 type ReasoningSummaryStatus = "active" | "can-conclude" | "concluded"
@@ -525,6 +567,21 @@ const lowerMessages = Effect.fn("OpenAIResponses.lowerMessages")(function* (requ
     : input
 })
 
+// UPD-002: lower the canonical `responseFormat` json variant onto OpenAI
+// Responses' wire shape. `strict` stays opt-in: session schemas are not
+// authored against OpenAI's strict-mode restrictions (additionalProperties,
+// required-field enumeration), so defaulting to false keeps every schema valid.
+const lowerTextFormat = (request: LLMRequest) => {
+  const format = request.responseFormat
+  if (!format || format.type !== "json") return undefined
+  return {
+    type: "json_schema" as const,
+    name: format.name ?? "structured_output",
+    schema: format.schema,
+    ...(format.strict !== undefined ? { strict: format.strict } : {}),
+  }
+}
+
 const lowerOptions = Effect.fn("OpenAIResponses.lowerOptions")(function* (request: LLMRequest) {
   const store = OpenAIOptions.store(request)
   const promptCacheKey = OpenAIOptions.promptCacheKey(request)
@@ -536,13 +593,16 @@ const lowerOptions = Effect.fn("OpenAIResponses.lowerOptions")(function* (reques
   const verbosity = OpenAIOptions.textVerbosity(request)
   const instructions = OpenAIOptions.instructions(request)
   const serviceTier = OpenAIOptions.serviceTier(request)
+  const format = lowerTextFormat(request)
+  const text =
+    verbosity || format ? { ...(verbosity ? { verbosity } : {}), ...(format ? { format } : {}) } : undefined
   return {
     ...(instructions ? { instructions } : {}),
     ...(store !== undefined ? { store } : {}),
     ...(promptCacheKey ? { prompt_cache_key: promptCacheKey } : {}),
     ...(include ? { include } : {}),
     ...(effort || summary ? { reasoning: { effort, summary } } : {}),
-    ...(verbosity ? { text: { verbosity } } : {}),
+    ...(text ? { text } : {}),
     ...(serviceTier ? { service_tier: serviceTier } : {}),
   }
 })
@@ -686,7 +746,13 @@ const onOutputTextDelta = (state: ParserState, event: OpenAIResponsesEvent): Ste
   if (!event.delta) return [state, NO_EVENTS]
   const events: LLMEvent[] = []
   return [
-    { ...state, lifecycle: Lifecycle.textDelta(state.lifecycle, events, event.item_id ?? "text-0", event.delta) },
+    {
+      ...state,
+      lifecycle: Lifecycle.textDelta(state.lifecycle, events, event.item_id ?? "text-0", event.delta),
+      // Only accumulate when a wire json_schema format was requested — keeps
+      // the free-form path allocation-free.
+      accumulatedText: state.jsonFormatName ? state.accumulatedText + event.delta : state.accumulatedText,
+    },
     events,
   ]
 }
@@ -970,7 +1036,21 @@ const onOutputItemDone = Effect.fn("OpenAIResponses.onOutputItemDone")(function*
   return [state, NO_EVENTS] satisfies StepResult
 })
 
-const onResponseFinish = (state: ParserState, event: OpenAIResponsesEvent): StepResult => {
+const onResponseFinish = Effect.fn("OpenAIResponses.onResponseFinish")(function* (
+  state: ParserState,
+  event: OpenAIResponsesEvent,
+) {
+  // UPD-002: wire-level structured-output guarantee. When the request carried
+  // a json_schema text format, the accumulated output text MUST parse as JSON;
+  // a provider that ignored the format (or a truncated stream) surfaces here
+  // as InvalidProviderOutput instead of leaking prose to the caller.
+  if (state.jsonFormatName && !state.hasFunctionCall) {
+    yield* ProviderShared.parseJson(
+      ADAPTER,
+      state.accumulatedText,
+      `OpenAI Responses text.format json_schema output is not valid JSON (format: ${state.jsonFormatName})`,
+    )
+  }
   const reason = mapFinishReason(event, state.hasFunctionCall)
   const releaseTools = event.type === "response.completed" && reason !== "length" && reason !== "content-filter"
   const events: LLMEvent[] = releaseTools ? [...state.pendingToolEvents] : []
@@ -985,8 +1065,8 @@ const onResponseFinish = (state: ParserState, event: OpenAIResponsesEvent): Step
           })
         : undefined,
   })
-  return [{ ...state, lifecycle, pendingToolEvents: [] }, events]
-}
+  return [{ ...state, lifecycle, pendingToolEvents: [] }, events] satisfies StepResult
+})
 
 // Build a single human-readable message from whatever the provider supplied.
 // When both code and message are present, prefix the code so consumers see
@@ -1043,7 +1123,7 @@ const step = (state: ParserState, event: OpenAIResponsesEvent) => {
   if (event.type === "response.custom_tool_call_input.delta") return onCustomToolCallInputDelta(state, event)
   if (event.type === "response.output_item.done") return onOutputItemDone(state, event)
   if (event.type === "response.completed" || event.type === "response.incomplete")
-    return Effect.succeed(onResponseFinish(state, event))
+    return onResponseFinish(state, event)
   if (event.type === "response.failed") return Effect.succeed(onResponseFailed(state, event))
   if (event.type === "error") return Effect.succeed(onError(state, event))
   return Effect.succeed<StepResult>([state, NO_EVENTS])
@@ -1072,6 +1152,9 @@ export const protocol = Protocol.make({
       lifecycle: Lifecycle.initial(),
       reasoningItems: {},
       store: OpenAIOptions.store(request),
+      jsonFormatName:
+        request.responseFormat?.type === "json" ? (request.responseFormat.name ?? "structured_output") : undefined,
+      accumulatedText: "",
     }),
     step,
     terminal: (event) => TERMINAL_TYPES.has(event.type),
@@ -1119,4 +1202,108 @@ export const webSocketRoute = Route.make({
   transport: webSocketTransport,
 })
 
+// =============================================================================
+// UPD-005: Unary Remote Compaction Client (/responses/compact)
+// =============================================================================
+// OpenAI-only unary endpoint (reference: codex `compact_remote_v2`). The
+// request body mirrors `/responses` minus `stream`; the response is a JSON
+// object whose `output` is the compacted item list — a `compaction` item
+// carries `encrypted_content`, an opaque server-encrypted context blob the
+// caller stages in memory and sends back on the next compaction.
+//
+// This is deliberately NOT part of `Protocol.make`: the protocol abstraction
+// models SSE streams (body → frames → event state machine) and adding a unary
+// axis would ripple protocol.ts / client.ts / transport (>2 files). A local
+// function reusing the existing lowering helpers confines the change here.
+const OpenAIResponsesCompactOutputItem = Schema.Struct({
+  type: Schema.String,
+  id: Schema.optional(Schema.String),
+  encrypted_content: optionalNull(Schema.String),
+})
+
+const OpenAIResponsesCompactResponse = Schema.Struct({
+  output: Schema.Array(OpenAIResponsesCompactOutputItem),
+})
+
+const decodeCompactResponse = ProviderShared.validateWith(
+  Schema.decodeUnknownEffect(Schema.fromJsonString(OpenAIResponsesCompactResponse)),
+)
+
+export interface CompactResult {
+  /** Opaque server-encrypted compacted context from the `compaction` item. */
+  readonly encryptedContent: string
+  /** Full compacted output item list (loose shapes) for round-tripping. */
+  readonly output: ReadonlyArray<{
+    readonly type: string
+    readonly id?: string
+    readonly encrypted_content?: string | null
+  }>
+}
+
+/**
+ * Compact a conversation server-side via `POST /responses/compact`. Requires
+ * `RequestExecutor.Service` in the environment. On success returns the
+ * compaction item's `encrypted_content`; on any failure (transport, HTTP ≥
+ * 400, malformed payload, missing compaction item) fails with `LLMError` so
+ * callers can fail over to local summarization. Fails with InvalidRequest
+ * when the request is not bound to this route.
+ */
+export const compactConversation = (
+  input: {
+    readonly request: LLMRequest
+    /** Prior compaction's encrypted context; prepended as a compaction item. */
+    readonly previousEncryptedContent?: string | undefined
+  },
+): Effect.Effect<CompactResult, LLMError, RequestExecutor.Service> =>
+  Effect.gen(function* () {
+  const request = input.request
+  // The compatible-responses route reuses this protocol end-to-end (DeepSeek serves
+  // /responses/compact, verified per UPD-005); capability gating stays in the caller's
+  // per-profile supportsResponsesCompact probe, so both Responses routes are admissible here.
+  if (request.model.route.id !== ADAPTER && request.model.route.id !== "openai-compatible-responses")
+    return yield* invalid(`Remote compaction requires the ${ADAPTER} route (got ${request.model.route.id})`)
+
+  const base = yield* fromRequest(request)
+  // `/responses/compact` is unary: strip `stream`; the compact endpoint takes
+  // no tool choice, and a json_schema text format is meaningless for a
+  // compaction — both are dropped rather than forwarded.
+  const { stream: _stream, tool_choice: _toolChoice, text: _text, ...core } = base
+  const lowered = yield* lowerMessages(request)
+  const compactItem: OpenAIResponsesCompactionItem | undefined = input.previousEncryptedContent
+    ? { type: "compaction", encrypted_content: input.previousEncryptedContent }
+    : undefined
+  const body = {
+    ...core,
+    input: compactItem ? [compactItem, ...lowered] : lowered,
+  }
+
+  const compactEndpoint = Endpoint.merge(request.model.route.endpoint, { path: COMPACT_PATH })
+  const parts = yield* HttpTransport.jsonRequestParts({
+    request,
+    body,
+    endpoint: compactEndpoint,
+    auth: request.model.route.auth,
+    encodeBody: ProviderShared.encodeJson,
+  })
+  const httpRequest = ProviderShared.jsonPost({ url: parts.url, body: parts.bodyText, headers: parts.headers })
+  const response = yield* (yield* RequestExecutor.Service).execute(httpRequest)
+  const rawText = yield* response.text.pipe(
+    Effect.mapError(() =>
+      ProviderShared.eventError(ADAPTER, "Failed to read OpenAI Responses compact response body"),
+    ),
+  )
+  const decoded = yield* decodeCompactResponse(rawText).pipe(
+    Effect.mapError(() =>
+      ProviderShared.eventError(ADAPTER, "OpenAI Responses compact response is not a valid compact payload", rawText),
+    ),
+  )
+  const compaction = decoded.output.find(
+    (item): item is typeof item & { readonly encrypted_content: string } =>
+      item.type === "compaction" && typeof item.encrypted_content === "string" && item.encrypted_content.length > 0,
+  )
+  if (!compaction)
+    return yield* ProviderShared.invalidRequest("OpenAI Responses compact response is missing a compaction item")
+  return { encryptedContent: compaction.encrypted_content, output: decoded.output } satisfies CompactResult
+  })
+
 export * as OpenAIResponses from "./openai-responses"
diff --git a/packages/llm/src/providers/openai-compatible-profile.ts b/packages/llm/src/providers/openai-compatible-profile.ts
index 30770c96..028a5e19 100644
--- a/packages/llm/src/providers/openai-compatible-profile.ts
+++ b/packages/llm/src/providers/openai-compatible-profile.ts
@@ -1,13 +1,43 @@
 export interface OpenAICompatibleProfile {
   readonly provider: string
   readonly baseURL: string
+  /**
+   * The family also serves the OpenAI Responses API (`/responses`). Route
+   * selection branches to the Responses route only when this is true;
+   * everyone else defaults to the Chat route.
+   */
+  readonly supportsResponses?: boolean
+  /**
+   * UPD-005: the family also serves the OpenAI-specific UNARY
+   * `/responses/compact` endpoint. Defaults to false — never assumed for
+   * compatible families without verified support. Canonical OpenAI and DeepSeek
+   * serve it (user-verified 2026-08-18); every other family stays on local
+   * summarization.
+   */
+  readonly supportsResponsesCompact?: boolean
+  /**
+   * UPD-002: the family honors the Responses API `text.format` json_schema
+   * (wire-level structured output). This is the CANONICAL capability
+   * declaration for wire structured output — independent of `supportsResponses`
+   * (a Responses-capable family may still lack constrained text output, so it
+   * is NEVER assumed from Responses support). Defaults to false; opt in per
+   * family only with verified support. No compatible family advertises it
+   * today: deepseek serves Responses but NOT constrained `text.format`.
+   */
+  readonly supportsStructuredTextFormat?: boolean
 }
 
 export const profiles = {
   baseten: { provider: "baseten", baseURL: "https://inference.baseten.co/v1" },
   cerebras: { provider: "cerebras", baseURL: "https://api.cerebras.ai/v1" },
   deepinfra: { provider: "deepinfra", baseURL: "https://api.deepinfra.com/v1/openai" },
-  deepseek: { provider: "deepseek", baseURL: "https://api.deepseek.com/v1" },
+  deepseek: {
+    provider: "deepseek",
+    baseURL: "https://api.deepseek.com/v1",
+    supportsResponses: true,
+    // UPD-005: DeepSeek 官方 API 支持 Responses 的 /responses/compact(用户 2026-08-18 确认)。
+    supportsResponsesCompact: true,
+  },
   fireworks: { provider: "fireworks", baseURL: "https://api.fireworks.ai/inference/v1" },
   groq: { provider: "groq", baseURL: "https://api.groq.com/openai/v1" },
   openrouter: { provider: "openrouter", baseURL: "https://openrouter.ai/api/v1" },
diff --git a/packages/llm/src/providers/openai-compatible.ts b/packages/llm/src/providers/openai-compatible.ts
index a79f65f6..a02c41e4 100644
--- a/packages/llm/src/providers/openai-compatible.ts
+++ b/packages/llm/src/providers/openai-compatible.ts
@@ -1,5 +1,6 @@
 import { ProviderID, type ModelID } from "../schema"
 import * as OpenAICompatibleChat from "../protocols/openai-compatible-chat"
+import * as OpenAICompatibleResponses from "../protocols/openai-compatible-responses"
 import type { RouteDefaultsInput } from "../route/client"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options"
 import { profiles, type OpenAICompatibleProfile } from "./openai-compatible-profile"
@@ -17,20 +18,28 @@ export type FamilyModelOptions = RouteDefaultsInput &
     readonly baseURL?: string
   }
 
-export const routes = [OpenAICompatibleChat.route]
+export const routes = [OpenAICompatibleResponses.route, OpenAICompatibleChat.route]
 
 export const configure = (input: GenericModelOptions) => {
   const provider = input.provider ?? "openai-compatible"
   const { provider: _, baseURL, apiKey: _apiKey, auth: _auth, ...rest } = input
-  const route = OpenAICompatibleChat.route.with({
+  const patch = {
     ...rest,
     provider,
     endpoint: { baseURL },
     auth: AuthOptions.bearer(input, []),
-  })
+  }
+  const chatRoute = OpenAICompatibleChat.route.with(patch)
+  const responsesRoute = OpenAICompatibleResponses.route.with(patch)
+  const chat = (modelID: string | ModelID) =>
+    chatRoute.model({ id: modelID, provider: ProviderID.make(provider) })
+  const responses = (modelID: string | ModelID) =>
+    responsesRoute.model({ id: modelID, provider: ProviderID.make(provider) })
   return {
     id: ProviderID.make(provider),
-    model: (modelID: string | ModelID) => route.model({ id: modelID, provider: ProviderID.make(provider) }),
+    model: chat,
+    chat,
+    responses,
     configure,
   }
 }
@@ -45,6 +54,8 @@ const define = (profile: OpenAICompatibleProfile) => {
     return {
       id: ProviderID.make(profile.provider),
       model: facade.model,
+      chat: facade.chat,
+      responses: facade.responses,
       configure: configureProfile,
     }
   }
diff --git a/packages/llm/src/route/executor.ts b/packages/llm/src/route/executor.ts
index 7dd8d70d..303b37c4 100644
--- a/packages/llm/src/route/executor.ts
+++ b/packages/llm/src/route/executor.ts
@@ -20,6 +20,7 @@ import {
   ProviderInternalReason,
   QuotaExceededReason,
   RateLimitReason,
+  TransportPhase,
   TransportReason,
   UnknownProviderReason,
 } from "../schema"
@@ -69,15 +70,38 @@ export function wireRequestHash(input: {
 }
 
 const BODY_LIMIT = 16_384
-const MAX_RETRIES = 2
+const TRANSPORT_RETRY_LIMIT = 2
+const STATUS_RETRY_LIMIT = 2
 const BASE_DELAY_MS = 500
 const MAX_DELAY_MS = 10_000
 const REDACTED = "<redacted>"
 
-/** Per-request transport retry budget. Durable provider attempts override this to zero. */
-export const CurrentRetryLimit = Context.Reference<number>("@deepagent-code/LLM/RequestExecutor/CurrentRetryLimit", {
-  defaultValue: () => MAX_RETRIES,
-})
+/**
+ * Per-request transport retry budget for pre-dispatch connection failures.
+ * Post-dispatch transport errors are never retried (double-billing risk), so
+ * this budget only ever applies to `TransportReason.phase === "pre-dispatch"`.
+ */
+export const CurrentTransportRetryLimit = Context.Reference<number>(
+  "@deepagent-code/LLM/RequestExecutor/CurrentTransportRetryLimit",
+  { defaultValue: () => TRANSPORT_RETRY_LIMIT },
+)
+
+/** Per-request retry budget for retryable HTTP status failures (429 / 5xx). */
+export const CurrentStatusRetryLimit = Context.Reference<number>(
+  "@deepagent-code/LLM/RequestExecutor/CurrentStatusRetryLimit",
+  { defaultValue: () => STATUS_RETRY_LIMIT },
+)
+
+/**
+ * Umbrella override for BOTH retry budgets. Durable provider attempts provide
+ * `0` here (the seal is recomputed before every attempt, so executor-internal
+ * retries would only multiply sealed physical requests). When unset
+ * (`undefined`), the per-class limits above apply independently.
+ */
+export const CurrentRetryLimit = Context.Reference<number | undefined>(
+  "@deepagent-code/LLM/RequestExecutor/CurrentRetryLimit",
+  { defaultValue: () => undefined },
+)
 
 // One source of truth for what counts as a sensitive name across headers,
 // URL query keys, and field names embedded inside request/response bodies.
@@ -389,7 +413,62 @@ const statusError =
       })
     })
 
+// Error codes that prove the request never reached the provider: DNS/TCP
+// connect failures, connection-phase timeouts, and TLS handshake rejections.
+// Anything else (ECONNRESET mid-exchange, header/body timeouts, unknown
+// errors) is ambiguous-or-delivered and classified post-dispatch.
+const PRE_DISPATCH_ERROR_CODES = new Set([
+  "ECONNREFUSED",
+  "ENOTFOUND",
+  "EAI_AGAIN",
+  "ENETUNREACH",
+  "EHOSTUNREACH",
+  "EADDRNOTAVAIL",
+  "UND_ERR_CONNECT_TIMEOUT",
+  "CERT_HAS_EXPIRED",
+  "CERT_NOT_YET_VALID",
+  "DEPTH_ZERO_SELF_SIGNED_CERT",
+  "SELF_SIGNED_CERT_IN_CHAIN",
+  "UNABLE_TO_VERIFY_LEAF_SIGNATURE",
+  "UNABLE_TO_GET_ISSUER_CERT_LOCALLY",
+  "ERR_TLS_CERT_ALTNAME_INVALID",
+])
+
+const hasPreDispatchCode = (error: unknown, seen: Set<unknown> = new Set()): boolean => {
+  if (!error || typeof error !== "object" || seen.has(error)) return false
+  seen.add(error)
+  const code = "code" in error ? (error as { readonly code?: unknown }).code : undefined
+  if (typeof code === "string" && PRE_DISPATCH_ERROR_CODES.has(code)) return true
+  const cause = "cause" in error ? (error as { readonly cause?: unknown }).cause : undefined
+  return hasPreDispatchCode(cause, seen)
+}
+
+/**
+ * Classifies a raw transport failure by dispatch phase. The executor only
+ * ever sees failures from `http.execute`, i.e. before response headers, but
+ * fetch cannot tell "connection refused" (nothing sent) from "connection
+ * dropped while awaiting headers" (request possibly delivered and billed).
+ * So pre-dispatch requires positive evidence from the underlying error codes;
+ * every ambiguous case degrades to post-dispatch, which is never retried.
+ */
+const transportPhase = (error: unknown): TransportPhase => {
+  // Effect timeouts carry no dispatch information; the request may already
+  // have been on the wire when the deadline fired.
+  if (!HttpClientError.isHttpClientError(error)) return "post-dispatch"
+  switch (error.reason._tag) {
+    // The request body/URL failed before anything was written to the wire.
+    case "EncodeError":
+    case "InvalidUrlError":
+      return "pre-dispatch"
+    case "TransportError":
+      return hasPreDispatchCode(error.reason.cause) ? "pre-dispatch" : "post-dispatch"
+    default:
+      return "post-dispatch"
+  }
+}
+
 const toHttpError = (redactedNames: ReadonlyArray<string | RegExp>) => (error: unknown) => {
+  const phase = transportPhase(error)
   const transportError = (input: {
     readonly message: string
     readonly kind?: string | undefined
@@ -401,6 +480,7 @@ const toHttpError = (redactedNames: ReadonlyArray<string | RegExp>) => (error: u
       reason: new TransportReason({
         message: input.message,
         kind: input.kind,
+        phase,
         url: input.request ? redactUrl(input.request.url) : undefined,
         http: input.request ? new HttpContext({ request: requestDetails(input.request, redactedNames) }) : undefined,
       }),
@@ -435,16 +515,30 @@ const retryDelay = (error: LLMError, attempt: number) => {
   ).pipe(Effect.map((delay) => Math.round(delay)))
 }
 
-const retryStatusFailures = <A, R>(
+const retryFailures = <A, R>(
   effect: Effect.Effect<A, LLMError, R>,
-  retries = MAX_RETRIES,
+  limits: { readonly transport: number; readonly status: number },
+  used: { readonly transport: number; readonly status: number } = { transport: 0, status: 0 },
   attempt = 0,
 ): Effect.Effect<A, LLMError, R> =>
   Effect.catchTag(effect, "LLM.Error", (error): Effect.Effect<A, LLMError, R> => {
-    if (!error.retryable || retries <= 0) return Effect.fail(error)
+    // Transport and status failures consume independent budgets: a flapping
+    // connection must not eat the 429/5xx budget and vice versa. Only
+    // pre-dispatch transport errors are retryable (see TransportReason).
+    const isTransport = error.reason._tag === "Transport"
+    const spent = isTransport ? used.transport : used.status
+    const limit = isTransport ? limits.transport : limits.status
+    if (!error.retryable || spent >= limit) return Effect.fail(error)
     return retryDelay(error, attempt).pipe(
       Effect.flatMap((delay) => Effect.sleep(delay)),
-      Effect.flatMap(() => retryStatusFailures(effect, retries - 1, attempt + 1)),
+      Effect.flatMap(() =>
+        retryFailures(
+          effect,
+          limits,
+          isTransport ? { transport: spent + 1, status: used.status } : { transport: used.transport, status: spent + 1 },
+          attempt + 1,
+        ),
+      ),
     )
   })
 
@@ -463,7 +557,10 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient> = Layer.e
     return Service.of({
       execute: (request) =>
         Effect.gen(function* () {
-          return yield* retryStatusFailures(executeOnce(request), yield* CurrentRetryLimit)
+          const override = yield* CurrentRetryLimit
+          const transportLimit = override ?? (yield* CurrentTransportRetryLimit)
+          const statusLimit = override ?? (yield* CurrentStatusRetryLimit)
+          return yield* retryFailures(executeOnce(request), { transport: transportLimit, status: statusLimit })
         }),
     })
   }),
diff --git a/packages/llm/src/schema/errors.ts b/packages/llm/src/schema/errors.ts
index 35546ca3..92153ae2 100644
--- a/packages/llm/src/schema/errors.ts
+++ b/packages/llm/src/schema/errors.ts
@@ -4,6 +4,21 @@ import { ModelID, ProviderID, ProviderMetadata, RouteID } from "./ids"
 export const ProviderFailureClassification = Schema.Literal("context-overflow")
 export type ProviderFailureClassification = typeof ProviderFailureClassification.Type
 
+/**
+ * Where a transport failure occurred relative to request dispatch.
+ *
+ * - `pre-dispatch` — the request never reached the provider (DNS/TCP connect
+ *   failure, TLS handshake rejection, request encoding failure). Retrying is
+ *   safe: no physical request can have been billed.
+ * - `post-dispatch` — the request was (or may have been) delivered: response
+ *   headers arrived and the body stream broke, or the failure point is
+ *   ambiguous. Retrying would duplicate the physical request (double
+ *   billing), so these are never auto-retried; recovery belongs to the
+ *   provider-attempt replay channel.
+ */
+export const TransportPhase = Schema.Literals(["pre-dispatch", "post-dispatch"])
+export type TransportPhase = typeof TransportPhase.Type
+
 export class HttpRequestDetails extends Schema.Class<HttpRequestDetails>("LLM.HttpRequestDetails")({
   method: Schema.String,
   url: Schema.String,
@@ -123,11 +138,14 @@ export class TransportReason extends Schema.Class<TransportReason>("LLM.Error.Tr
   _tag: Schema.tag("Transport"),
   message: Schema.String,
   kind: Schema.optional(Schema.String),
+  phase: Schema.optional(TransportPhase),
   url: Schema.optional(Schema.String),
   http: Schema.optional(HttpContext),
 }) {
   get retryable() {
-    return false
+    // Only failures proven to predate dispatch are safe to re-send. Absent a
+    // phase (e.g. websocket transport errors) we conservatively refuse.
+    return this.phase === "pre-dispatch"
   }
 }
 
diff --git a/packages/llm/src/schema/messages.ts b/packages/llm/src/schema/messages.ts
index 7c94730f..8858780e 100644
--- a/packages/llm/src/schema/messages.ts
+++ b/packages/llm/src/schema/messages.ts
@@ -394,9 +394,17 @@ export namespace ToolChoice {
   }
 }
 
+// UPD-002: the `json` variant carries wire-level structured-output details.
+// `name`/`strict` map onto OpenAI Responses' `text.format` json_schema shape;
+// they are optional so routes without wire structured output can ignore them.
 export const ResponseFormat = Schema.Union([
   Schema.Struct({ type: Schema.Literal("text") }),
-  Schema.Struct({ type: Schema.Literal("json"), schema: JsonSchema }),
+  Schema.Struct({
+    type: Schema.Literal("json"),
+    schema: JsonSchema,
+    name: Schema.optional(Schema.String),
+    strict: Schema.optional(Schema.Boolean),
+  }),
   Schema.Struct({ type: Schema.Literal("tool"), tool: ToolDefinitionSchema }),
 ]).pipe(Schema.toTaggedUnion("type"))
 export type ResponseFormat = Schema.Schema.Type<typeof ResponseFormat>
diff --git a/packages/llm/test/executor.test.ts b/packages/llm/test/executor.test.ts
index c6951c33..d3e48ef5 100644
--- a/packages/llm/test/executor.test.ts
+++ b/packages/llm/test/executor.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect } from "bun:test"
 import { Effect, Fiber, Layer, Random, Ref } from "effect"
 import * as TestClock from "effect/testing/TestClock"
-import { Headers, HttpClient, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
+import { Headers, HttpClient, HttpClientError, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
 import { LLM, LLMError } from "../src"
 import { LLMClient, RequestExecutor } from "../src/route"
 import * as OpenAIChat from "../src/protocols/openai-chat"
@@ -59,6 +59,54 @@ const countedResponsesLayer = (attempts: Ref.Ref<number>, responses: ReadonlyArr
     ),
   )
 
+type ScriptedOutcome =
+  | { readonly kind: "response"; readonly response: Response }
+  | { readonly kind: "transport"; readonly cause: unknown }
+
+// Scripts a mix of successful responses and raw transport failures (the shape
+// FetchHttpClient produces: HttpClientError wrapping a TransportError whose
+// `cause` carries the platform error code) so tests can exercise pre- and
+// post-dispatch classification without real network access.
+const scriptedOutcomesLayer = (attempts: Ref.Ref<number>, outcomes: ReadonlyArray<ScriptedOutcome>) =>
+  RequestExecutor.layer.pipe(
+    Layer.provide(
+      Layer.unwrap(
+        Effect.gen(function* () {
+          const cursor = yield* Ref.make(0)
+          return Layer.succeed(
+            HttpClient.HttpClient,
+            HttpClient.make((request) =>
+              Effect.gen(function* () {
+                yield* Ref.update(attempts, (value) => value + 1)
+                const index = yield* Ref.getAndUpdate(cursor, (value) => value + 1)
+                const outcome = outcomes[index] ?? outcomes[outcomes.length - 1]
+                if (!outcome) return yield* Effect.die(new Error("no scripted outcome"))
+                if (outcome.kind === "transport")
+                  return yield* Effect.fail(
+                    new HttpClientError.HttpClientError({
+                      reason: new HttpClientError.TransportError({ request, cause: outcome.cause }),
+                    }),
+                  )
+                return HttpClientResponse.fromWeb(request, outcome.response)
+              }),
+            ),
+          )
+        }),
+      ),
+    ),
+  )
+
+// TCP connect refused: proves the request never reached the provider.
+const connectRefusedCause = new TypeError("fetch failed", {
+  cause: Object.assign(new Error("connect ECONNREFUSED 10.0.0.1:443"), { code: "ECONNREFUSED" }),
+})
+// Mid-exchange reset: the request may already have been delivered.
+const connectionResetCause = new TypeError("fetch failed", {
+  cause: Object.assign(new Error("read ECONNRESET"), { code: "ECONNRESET" }),
+})
+
+const busy503 = () => new Response("busy", { status: 503, headers: { "retry-after-ms": "0" } })
+
 const randomMidpoint = {
   nextDoubleUnsafe: () => 0.5,
   nextIntUnsafe: () => 0,
@@ -493,6 +541,110 @@ describe("RequestExecutor", () => {
     }).pipe(Effect.provideService(Random.Random, randomMidpoint)),
   )
 
+  it.effect("retries pre-dispatch transport failures up to the transport budget", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      return yield* Effect.gen(function* () {
+        const executor = yield* RequestExecutor.Service
+        const fiber = yield* executor.execute(request).pipe(Effect.flip, Effect.forkChild)
+
+        yield* Effect.yieldNow
+        yield* TestClock.adjust(600_000)
+        const error = yield* Fiber.join(fiber)
+
+        expectLLMError(error)
+        expect(error.reason).toMatchObject({ _tag: "Transport", phase: "pre-dispatch" })
+        expect(error.retryable).toBe(true)
+        // 1 initial attempt + 2 transport-budget retries.
+        expect(yield* Ref.get(attempts)).toBe(3)
+      }).pipe(
+        Effect.provide(scriptedOutcomesLayer(attempts, [{ kind: "transport", cause: connectRefusedCause }])),
+      )
+    }),
+  )
+
+  it.effect("does not retry post-dispatch transport failures", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      return yield* Effect.gen(function* () {
+        const executor = yield* RequestExecutor.Service
+        const error = yield* executor.execute(request).pipe(Effect.flip)
+
+        expectLLMError(error)
+        expect(error.reason).toMatchObject({ _tag: "Transport", phase: "post-dispatch" })
+        expect(error.retryable).toBe(false)
+        expect(yield* Ref.get(attempts)).toBe(1)
+      }).pipe(
+        Effect.provide(scriptedOutcomesLayer(attempts, [{ kind: "transport", cause: connectionResetCause }])),
+      )
+    }),
+  )
+
+  it.effect("classifies ambiguous transport failures as post-dispatch", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      return yield* Effect.gen(function* () {
+        const executor = yield* RequestExecutor.Service
+        const error = yield* executor.execute(request).pipe(Effect.flip)
+
+        expectLLMError(error)
+        expect(error.reason).toMatchObject({ _tag: "Transport", phase: "post-dispatch" })
+        expect(error.retryable).toBe(false)
+        expect(yield* Ref.get(attempts)).toBe(1)
+      }).pipe(
+        Effect.provide(
+          scriptedOutcomesLayer(attempts, [{ kind: "transport", cause: new TypeError("terminated") }]),
+        ),
+      )
+    }),
+  )
+
+  it.effect("tracks transport and status retry budgets independently", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      return yield* Effect.gen(function* () {
+        const executor = yield* RequestExecutor.Service
+        const fiber = yield* executor.execute(request).pipe(Effect.forkChild)
+
+        yield* Effect.yieldNow
+        yield* TestClock.adjust(600_000)
+        const response = yield* Fiber.join(fiber)
+
+        // 503 -> ECONNREFUSED -> 503 -> 200: two status retries and one
+        // transport retry succeed because the budgets count independently.
+        // A shared budget of 2 would have stopped after the third attempt.
+        expect(response.status).toBe(200)
+        expect(yield* Ref.get(attempts)).toBe(4)
+      }).pipe(
+        Effect.provide(
+          scriptedOutcomesLayer(attempts, [
+            { kind: "response", response: busy503() },
+            { kind: "transport", cause: connectRefusedCause },
+            { kind: "response", response: busy503() },
+            { kind: "response", response: new Response("ok", { status: 200 }) },
+          ]),
+        ),
+      )
+    }),
+  )
+
+  it.effect("umbrella retry limit zero disables pre-dispatch transport retries", () =>
+    Effect.gen(function* () {
+      const attempts = yield* Ref.make(0)
+      return yield* Effect.gen(function* () {
+        const executor = yield* RequestExecutor.Service
+        const error = yield* executor.execute(request).pipe(Effect.flip)
+
+        expectLLMError(error)
+        expect(error.reason).toMatchObject({ _tag: "Transport", phase: "pre-dispatch" })
+        expect(yield* Ref.get(attempts)).toBe(1)
+      }).pipe(
+        Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+        Effect.provide(scriptedOutcomesLayer(attempts, [{ kind: "transport", cause: connectRefusedCause }])),
+      )
+    }),
+  )
+
   it.effect("does not retry after a successful response reaches stream parsing", () =>
     Effect.gen(function* () {
       const attempts = yield* Ref.make(0)
diff --git a/packages/llm/test/exports.test.ts b/packages/llm/test/exports.test.ts
index f0d56e0b..66b5ff31 100644
--- a/packages/llm/test/exports.test.ts
+++ b/packages/llm/test/exports.test.ts
@@ -14,7 +14,7 @@ import {
   Google,
 } from "@deepagent-code/llm/providers/compat"
 import * as MainProviders from "@deepagent-code/llm/providers"
-import { OpenAIChat, OpenAICompatibleChat, OpenAIResponses } from "@deepagent-code/llm/protocols"
+import { OpenAIChat, OpenAICompatibleChat, OpenAICompatibleResponses, OpenAIResponses } from "@deepagent-code/llm/protocols"
 import * as AnthropicMessages from "@deepagent-code/llm/protocols/anthropic-messages"
 
 describe("public exports", () => {
@@ -41,6 +41,8 @@ describe("public exports", () => {
     expect(OpenAI.provider.responsesWebSocket).toBe(OpenAI.responsesWebSocket)
     expect(OpenAI.configure({ apiKey: "fixture" }).responses).toBeFunction()
     expect(OpenAICompatible.deepseek.model).toBeFunction()
+    expect(OpenAICompatible.deepseek.responses).toBeFunction()
+    expect(OpenAICompatible.deepseek.chat).toBeFunction()
     expect(Anthropic.model).toBeFunction()
     expect(CloudflareAIGateway.configure).toBeFunction()
     expect(CloudflareAIGateway.configure({ accountId: "fixture", gatewayApiKey: "fixture" }).model).toBeFunction()
@@ -67,6 +69,7 @@ describe("public exports", () => {
   test("protocol barrels expose supported low-level routes", () => {
     expect(OpenAIChat.route.id).toBe("openai-chat")
     expect(OpenAICompatibleChat.route.id).toBe("openai-compatible-chat")
+    expect(OpenAICompatibleResponses.route.id).toBe("openai-compatible-responses")
     expect(OpenAIResponses.route.id).toBe("openai-responses")
     expect(OpenAIResponses.webSocketRoute.id).toBe("openai-responses-websocket")
     expect(AnthropicMessages.route.id).toBe("anthropic-messages")
diff --git a/packages/llm/test/provider/bug407008-reasoning.test.ts b/packages/llm/test/provider/bug407008-reasoning.test.ts
new file mode 100644
index 00000000..4e66ea5d
--- /dev/null
+++ b/packages/llm/test/provider/bug407008-reasoning.test.ts
@@ -0,0 +1,456 @@
+// BUG-407-008 §7.3 — Provider protocol non-regression tests (items 30–34).
+//
+// The BUG-407-008 fix is scoped to App/progress projection; it must not touch
+// provider-side reasoning handling. These tests pin the deterministic
+// input → lowered-provider-request (and response → canonical event) shapes for
+// every reasoning replay mode listed in the spec:
+//
+//   #30 Kimi active continuation: reasoning/tool chain survives lowering verbatim
+//   #31 signed reasoning provider: signature/redacted block order unchanged
+//   #32 encrypted reasoning provider: encrypted content never removed by UI metadata
+//   #33 settled plain reasoning is not re-injected across the terminal boundary
+//   #34 raw reasoning + tool results stay fully parseable for DB/export persistence
+//
+// All assertions are deterministic snapshots: identical inputs must always lower
+// to identical wire shapes, before and after the projection fix.
+
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { LLM, Message, ToolCallPart, ToolDefinition } from "../../src"
+import { Auth, LLMClient } from "../../src/route"
+import * as AnthropicMessages from "../../src/protocols/anthropic-messages"
+import * as OpenAIChat from "../../src/protocols/openai-chat"
+import * as OpenAIResponses from "../../src/protocols/openai-responses"
+import { it } from "../lib/effect"
+import { fixedResponse } from "../lib/http"
+import { sseEvents } from "../lib/sse"
+
+// Kimi-style interleaved reasoning provider: OpenAI-compatible chat route.
+// `reasoningReplayCapability` maps it to `active-continuation`, i.e. plain
+// reasoning is replayed via `reasoning_content` for the active sub-turn.
+const kimiModel = OpenAIChat.route
+  .with({ endpoint: { baseURL: "https://api.moonshot.test/v1/" }, auth: Auth.bearer("test") })
+  .model({ id: "kimi-k2" })
+
+// Signed reasoning provider (Anthropic family): thinking blocks carry a
+// signature; redacted blocks round-trip their opaque blob as the signature.
+const signedModel = AnthropicMessages.route
+  .with({ endpoint: { baseURL: "https://api.anthropic.test/v1/" }, auth: Auth.header("x-api-key", "test") })
+  .model({ id: "claude-sonnet-4-5" })
+
+// Encrypted reasoning provider (OpenAI Responses family): stateless turns
+// (store: false) replay reasoning via `encrypted_content`.
+const encryptedModel = OpenAIResponses.route
+  .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
+  .model({ id: "gpt-5.2" })
+
+// The incident's distinguishing shape: revision 8 and revision 9 emitted
+// verbatim-identical reasoning followed by different tool calls. Replay of the
+// identical text in BOTH sub-turns is legitimate provider history and must not
+// be deduplicated or dropped by lowering.
+const SHARED_REASONING = [
+  "用户在等 w70_stress.py 的四个用户全部打出 FINAL @~950K。",
+  "上一轮已确认 user0 / user1 / user3 三个 FINAL，user2 还没出现。",
+  "需要再次检查 stress log 尾部并确认 w70_stress 进程仍在运行，",
+  "然后再等待 user2 的 FINAL 输出。",
+].join("\n")
+
+const REVISION_8_TOOL_OUTPUT = "user1 FINAL @~950K\nuser0 FINAL @~950K\nuser3 FINAL @~950K\n===PROC===\npython -u /data1/fyl/w70_stress.py"
+const REVISION_9_TOOL_OUTPUT = "user1 FINAL @~950K\nuser0 FINAL @~950K\nuser3 FINAL @~950K"
+
+const bashTool = ToolDefinition.make({
+  name: "bash",
+  description: "Run a shell command.",
+  inputSchema: {
+    type: "object",
+    properties: { command: { type: "string" } },
+    required: ["command"],
+    additionalProperties: false,
+  },
+})
+
+describe("BUG-407-008 §7.3 provider protocol non-regression", () => {
+  it.effect("#30 Kimi active continuation keeps the reasoning/tool chain intact in the lowered request", () =>
+    Effect.gen(function* () {
+      // Deterministic incident-shaped history: two consecutive reasoning-only
+      // sub-turns (revision 8 / 9) with verbatim-identical reasoning and
+      // different tool calls, followed by their tool results.
+      const prepared = yield* LLMClient.prepare<OpenAIChat.OpenAIChatBody>(
+        LLM.request({
+          id: "req_bug407008_kimi_active_continuation",
+          model: kimiModel,
+          system: "You are a careful operations assistant.",
+          messages: [
+            Message.user("请你再查询确认一下，是不是四个用户每个用户都有950K的上下文空间。"),
+            Message.assistant([
+              { type: "reasoning", text: SHARED_REASONING },
+              ToolCallPart.make({
+                id: "tool_sd47zQa3WQeOSa1BKPhv6mF1",
+                name: "bash",
+                input: { command: "tail -n 4 stress.log; ps aux | grep w70_stress" },
+              }),
+            ]),
+            Message.tool({
+              id: "tool_sd47zQa3WQeOSa1BKPhv6mF1",
+              name: "bash",
+              result: REVISION_8_TOOL_OUTPUT,
+              resultType: "text",
+            }),
+            Message.assistant([
+              { type: "reasoning", text: SHARED_REASONING },
+              ToolCallPart.make({
+                id: "tool_ZSTCdihDT0jY74tJVeAZLZ45",
+                name: "bash",
+                input: { command: "tail -n 4 stress.log" },
+              }),
+            ]),
+            Message.tool({
+              id: "tool_ZSTCdihDT0jY74tJVeAZLZ45",
+              name: "bash",
+              result: REVISION_9_TOOL_OUTPUT,
+              resultType: "text",
+            }),
+          ],
+          tools: [bashTool],
+          cache: "none",
+        }),
+      )
+
+      // Snapshot of the required reasoning/tool chain: every reasoning payload
+      // verbatim, every tool call paired with its result, order preserved.
+      expect(prepared.body.messages).toEqual([
+        { role: "system", content: "You are a careful operations assistant." },
+        { role: "user", content: "请你再查询确认一下，是不是四个用户每个用户都有950K的上下文空间。" },
+        {
+          role: "assistant",
+          content: null,
+          reasoning_content: SHARED_REASONING,
+          tool_calls: [
+            {
+              id: "tool_sd47zQa3WQeOSa1BKPhv6mF1",
+              type: "function",
+              function: {
+                name: "bash",
+                arguments: '{"command":"tail -n 4 stress.log; ps aux | grep w70_stress"}',
+              },
+            },
+          ],
+        },
+        { role: "tool", tool_call_id: "tool_sd47zQa3WQeOSa1BKPhv6mF1", content: REVISION_8_TOOL_OUTPUT },
+        {
+          role: "assistant",
+          content: null,
+          reasoning_content: SHARED_REASONING,
+          tool_calls: [
+            {
+              id: "tool_ZSTCdihDT0jY74tJVeAZLZ45",
+              type: "function",
+              function: { name: "bash", arguments: '{"command":"tail -n 4 stress.log"}' },
+            },
+          ],
+        },
+        { role: "tool", tool_call_id: "tool_ZSTCdihDT0jY74tJVeAZLZ45", content: REVISION_9_TOOL_OUTPUT },
+      ])
+
+      // The identical reasoning text must be replayed twice — once per
+      // sub-turn. Lowering must never deduplicate cross-turn reasoning.
+      const reasoningPayloads = prepared.body.messages
+        .filter((message) => message.role === "assistant")
+        .map((message) => message.reasoning_content)
+      expect(reasoningPayloads).toEqual([SHARED_REASONING, SHARED_REASONING])
+    }),
+  )
+
+  it.effect("#31 signed reasoning provider preserves signature/redacted block order", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare<AnthropicMessages.AnthropicMessagesBody>(
+        LLM.request({
+          id: "req_bug407008_signed_reasoning_order",
+          model: signedModel,
+          messages: [
+            Message.user("Confirm all four users reached 950K."),
+            Message.assistant([
+              {
+                type: "reasoning",
+                text: "rev8: check the stress log tail and the w70_stress process",
+                providerMetadata: { anthropic: { signature: "sig_rev8" } },
+              },
+              ToolCallPart.make({
+                id: "tool_rev8",
+                name: "bash",
+                input: { command: "tail -n 4 stress.log" },
+              }),
+              // Redacted block: opaque provider blob round-trips as the
+              // thinking signature with no visible text.
+              { type: "reasoning", text: "", encrypted: "redacted_blob_rev8" },
+              {
+                type: "reasoning",
+                text: "rev9: poll the stress log again for user2 FINAL",
+                providerMetadata: { anthropic: { signature: "sig_rev9" } },
+              },
+            ]),
+          ],
+          cache: "none",
+        }),
+      )
+
+      // Block order is part of the signed-reasoning contract: lowering must
+      // keep signature and redacted blocks exactly where the parts were.
+      expect(prepared.body.messages).toEqual([
+        { role: "user", content: [{ type: "text", text: "Confirm all four users reached 950K." }] },
+        {
+          role: "assistant",
+          content: [
+            {
+              type: "thinking",
+              thinking: "rev8: check the stress log tail and the w70_stress process",
+              signature: "sig_rev8",
+            },
+            { type: "tool_use", id: "tool_rev8", name: "bash", input: { command: "tail -n 4 stress.log" } },
+            { type: "thinking", thinking: "", signature: "redacted_blob_rev8" },
+            { type: "thinking", thinking: "rev9: poll the stress log again for user2 FINAL", signature: "sig_rev9" },
+          ],
+        },
+      ])
+    }),
+  )
+
+  it.effect("#32 encrypted reasoning content is never removed by App projection metadata", () =>
+    Effect.gen(function* () {
+      // The same provider chain, once without and once with the App-side
+      // computed progress marker attached to the reasoning part. The marker is
+      // a UI/API view only — the lowered provider request must be identical.
+      const chain = (withAppProjection: boolean) => [
+        Message.user("Continue the stress check."),
+        Message.assistant([
+          {
+            type: "reasoning",
+            text: "checking stress log tail",
+            ...(withAppProjection
+              ? {
+                  metadata: {
+                    deepagent_activity_progress: {
+                      activity_id: "a6d06b2a82ef234ab9dc71e3fd940292a21b34f4732f28aa19ba8416c4c5e5a9",
+                      revision: 8,
+                      state: "progress",
+                    },
+                  },
+                }
+              : {}),
+            providerMetadata: {
+              openai: { itemId: "rs_rev8", reasoningEncryptedContent: "encrypted-rev8" },
+            },
+          },
+          ToolCallPart.make({
+            id: "call_rev8",
+            name: "bash",
+            input: { command: "tail -n 4 stress.log" },
+          }),
+        ]),
+        Message.tool({ id: "call_rev8", name: "bash", result: REVISION_8_TOOL_OUTPUT, resultType: "text" }),
+      ]
+      const build = (withAppProjection: boolean) =>
+        LLM.request({
+          id: withAppProjection
+            ? "req_bug407008_encrypted_with_projection"
+            : "req_bug407008_encrypted_without_projection",
+          model: encryptedModel,
+          messages: chain(withAppProjection),
+          tools: [bashTool],
+          cache: "none",
+          providerOptions: { openai: { store: false, include: ["reasoning.encrypted_content"] } },
+        })
+
+      const withoutProjection = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(build(false))
+      const withProjection = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(build(true))
+
+      // App projection metadata must not change the wire request at all.
+      expect(withProjection.body.input).toEqual(withoutProjection.body.input)
+
+      // The encrypted reasoning item survives lowering verbatim, ahead of the
+      // tool chain it belongs to.
+      expect(withProjection.body.input).toEqual([
+        { role: "user", content: [{ type: "input_text", text: "Continue the stress check." }] },
+        {
+          type: "reasoning",
+          id: "rs_rev8",
+          summary: [{ type: "summary_text", text: "checking stress log tail" }],
+          encrypted_content: "encrypted-rev8",
+        },
+        {
+          type: "function_call",
+          call_id: "call_rev8",
+          name: "bash",
+          arguments: '{"command":"tail -n 4 stress.log"}',
+        },
+        { type: "function_call_output", call_id: "call_rev8", output: REVISION_8_TOOL_OUTPUT },
+      ])
+    }),
+  )
+
+  it.effect("#33 settled plain reasoning is not re-injected across the store:false terminal boundary", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(
+        LLM.request({
+          id: "req_bug407008_terminal_boundary",
+          model: encryptedModel,
+          messages: [
+            Message.assistant([
+              // Audit-only reasoning without any provider state is never
+              // replayed into a new provider request.
+              { type: "reasoning", text: "audit-only reasoning without provider state" },
+              // Settled reasoning item whose encrypted state was not captured:
+              // the terminal boundary filter must not re-inject it.
+              {
+                type: "reasoning",
+                text: "settled plain reasoning from revision 8",
+                providerMetadata: { openai: { itemId: "rs_rev8_plain" } },
+              },
+              // Active reasoning item with encrypted state: replay is allowed.
+              {
+                type: "reasoning",
+                text: "active encrypted reasoning from revision 9",
+                providerMetadata: {
+                  openai: { itemId: "rs_rev9", reasoningEncryptedContent: "encrypted-rev9" },
+                },
+              },
+              ToolCallPart.make({
+                id: "call_rev9",
+                name: "bash",
+                input: { command: "tail -n 4 stress.log" },
+              }),
+            ]),
+            Message.tool({ id: "call_rev9", name: "bash", result: REVISION_9_TOOL_OUTPUT, resultType: "text" }),
+          ],
+          tools: [bashTool],
+          cache: "none",
+          providerOptions: { openai: { store: false, include: ["reasoning.encrypted_content"] } },
+        }),
+      )
+
+      // The boundary keeps exactly the encrypted reasoning item plus the intact
+      // tool chain; nothing plain or stateless sneaks back into the request.
+      expect(prepared.body.input).toEqual([
+        {
+          type: "reasoning",
+          id: "rs_rev9",
+          summary: [{ type: "summary_text", text: "active encrypted reasoning from revision 9" }],
+          encrypted_content: "encrypted-rev9",
+        },
+        {
+          type: "function_call",
+          call_id: "call_rev9",
+          name: "bash",
+          arguments: '{"command":"tail -n 4 stress.log"}',
+        },
+        { type: "function_call_output", call_id: "call_rev9", output: REVISION_9_TOOL_OUTPUT },
+      ])
+
+      const reasoningItems = prepared.body.input.filter(
+        (item) => "type" in item && item.type === "reasoning",
+      )
+      expect(reasoningItems).toHaveLength(1)
+      expect(prepared.body.input.some((item) => "id" in item && item.id === "rs_rev8_plain")).toBe(false)
+    }),
+  )
+
+  it.effect("#34 parser keeps full raw reasoning text and tool results for DB/export persistence", () =>
+    Effect.gen(function* () {
+      // One deterministic stream per provider sub-turn (revision 8 / 9), both
+      // carrying the verbatim-identical reasoning and their own tool call.
+      // This is the llm-side half of the invariant: every raw provider token
+      // must reach canonical events untouched so persistence/export can store
+      // it. (Actual DB/export reads live in packages/deepagent-code.)
+      const revisionStream = (input: { itemID: string; callID: string; command: string }) => {
+        const args = JSON.stringify({ command: input.command })
+        return sseEvents(
+          { type: "response.output_item.added", item: { type: "reasoning", id: input.itemID, encrypted_content: null } },
+          { type: "response.reasoning_summary_part.added", item_id: input.itemID, summary_index: 0 },
+          { type: "response.reasoning_summary_text.delta", item_id: input.itemID, summary_index: 0, delta: SHARED_REASONING },
+          { type: "response.reasoning_summary_part.done", item_id: input.itemID, summary_index: 0 },
+          {
+            type: "response.output_item.done",
+            item: { type: "reasoning", id: input.itemID, encrypted_content: `enc_${input.itemID}` },
+          },
+          {
+            type: "response.output_item.added",
+            item: { type: "function_call", id: `fc_${input.callID}`, call_id: input.callID, name: "bash", arguments: "" },
+          },
+          { type: "response.function_call_arguments.delta", item_id: `fc_${input.callID}`, delta: args },
+          { type: "response.function_call_arguments.done", item_id: `fc_${input.callID}`, arguments: args },
+          {
+            type: "response.output_item.done",
+            item: {
+              type: "function_call",
+              id: `fc_${input.callID}`,
+              call_id: input.callID,
+              name: "bash",
+              arguments: args,
+            },
+          },
+          {
+            type: "response.completed",
+            response: { id: `resp_${input.itemID}`, usage: { input_tokens: 10, output_tokens: 5 } },
+          },
+        )
+      }
+      const turnRequest = (id: string) =>
+        LLM.request({
+          id,
+          model: encryptedModel,
+          prompt: "Continue the stress check.",
+          tools: [bashTool],
+          providerOptions: { openai: { store: false, include: ["reasoning.encrypted_content"] } },
+        })
+
+      const revision8 = yield* LLMClient.generate(turnRequest("req_bug407008_raw_rev8")).pipe(
+        Effect.provide(
+          fixedResponse(revisionStream({ itemID: "rs_rev8", callID: "call_rev8", command: "tail stress.log; ps aux" })),
+        ),
+      )
+      const revision9 = yield* LLMClient.generate(turnRequest("req_bug407008_raw_rev9")).pipe(
+        Effect.provide(
+          fixedResponse(revisionStream({ itemID: "rs_rev9", callID: "call_rev9", command: "tail stress.log" })),
+        ),
+      )
+
+      // Full raw reasoning text survives parsing in BOTH revisions — identical
+      // content is not merged, truncated, or dropped on the parse side.
+      expect(revision8.reasoning).toBe(SHARED_REASONING)
+      expect(revision9.reasoning).toBe(SHARED_REASONING)
+
+      // Replay state (encrypted content + item id) needed for later turns is
+      // attached to the reasoning events of each revision.
+      expect(revision8.events).toContainEqual(
+        expect.objectContaining({
+          type: "reasoning-end",
+          id: "rs_rev8:0",
+          providerMetadata: { openai: { itemId: "rs_rev8", reasoningEncryptedContent: "enc_rs_rev8" } },
+        }),
+      )
+      expect(revision9.events).toContainEqual(
+        expect.objectContaining({
+          type: "reasoning-end",
+          id: "rs_rev9:0",
+          providerMetadata: { openai: { itemId: "rs_rev9", reasoningEncryptedContent: "enc_rs_rev9" } },
+        }),
+      )
+
+      // Raw tool inputs stay complete and distinct per revision.
+      const toolCall8 = revision8.events.find((event) => event.type === "tool-call")
+      const toolCall9 = revision9.events.find((event) => event.type === "tool-call")
+      expect(toolCall8).toMatchObject({
+        type: "tool-call",
+        id: "call_rev8",
+        name: "bash",
+        input: { command: "tail stress.log; ps aux" },
+      })
+      expect(toolCall9).toMatchObject({
+        type: "tool-call",
+        id: "call_rev9",
+        name: "bash",
+        input: { command: "tail stress.log" },
+      })
+    }),
+  )
+})
diff --git a/packages/llm/test/provider/openai-compatible-responses.test.ts b/packages/llm/test/provider/openai-compatible-responses.test.ts
new file mode 100644
index 00000000..deeb582f
--- /dev/null
+++ b/packages/llm/test/provider/openai-compatible-responses.test.ts
@@ -0,0 +1,145 @@
+import { describe, expect, test } from "bun:test"
+import { Effect, Schema } from "effect"
+import { HttpClientRequest } from "effect/unstable/http"
+import { LLM } from "../../src"
+import { Auth, LLMClient } from "../../src/route"
+import * as OpenAICompatible from "../../src/providers/openai-compatible"
+import { byProvider, profiles } from "../../src/providers/openai-compatible-profile"
+import * as OpenAICompatibleResponses from "../../src/protocols/openai-compatible-responses"
+import { it } from "../lib/effect"
+import { dynamicResponse } from "../lib/http"
+import { sseEvents } from "../lib/sse"
+
+const Json = Schema.fromJsonString(Schema.Unknown)
+const decodeJson = Schema.decodeUnknownSync(Json)
+
+const model = OpenAICompatibleResponses.route
+  .with({
+    provider: "deepseek",
+    endpoint: { baseURL: "https://api.deepseek.test/v1/" },
+    auth: Auth.bearer("test-key"),
+  })
+  .model({ id: "deepseek-reasoner" })
+
+const request = LLM.request({
+  id: "req_1",
+  model,
+  system: "You are concise.",
+  prompt: "Say hello.",
+  generation: { maxTokens: 20, temperature: 0 },
+})
+
+describe("OpenAI-compatible Responses route", () => {
+  it.effect("prepares a Responses body owned by the deepseek route, not openai", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare(request)
+
+      expect(prepared.route).toBe("openai-compatible-responses")
+      expect(prepared.protocol).toBe("openai-responses")
+      expect(prepared.model).toMatchObject({
+        id: "deepseek-reasoner",
+        provider: "deepseek",
+        route: { id: "openai-compatible-responses" },
+      })
+      expect(prepared.model.provider).not.toBe("openai")
+      expect(prepared.body).toEqual({
+        model: "deepseek-reasoner",
+        input: [
+          { role: "system", content: "You are concise." },
+          { role: "user", content: [{ type: "input_text", text: "Say hello." }] },
+        ],
+        stream: true,
+        max_output_tokens: 20,
+        temperature: 0,
+      })
+      expect(prepared.body).not.toHaveProperty("include")
+      expect(prepared.body).not.toHaveProperty("store")
+    }),
+  )
+
+  it.effect("never emits include/store for non-openai providerOptions keys", () =>
+    Effect.gen(function* () {
+      // DeepSeek's Responses compatibility set has not been proven to support
+      // encrypted reasoning, so include/store must never reach the wire. The
+      // shared protocol lowerOptions only reads `providerOptions.openai`, and
+      // compatible families key their options under their own provider id.
+      const prepared = yield* LLMClient.prepare(
+        LLM.updateRequest(request, {
+          providerOptions: { deepseek: { store: false, include: ["reasoning.encrypted_content"] } },
+        }),
+      )
+      expect(prepared.body).not.toHaveProperty("include")
+      expect(prepared.body).not.toHaveProperty("store")
+      expect(prepared.body).not.toHaveProperty("reasoning")
+    }),
+  )
+
+  it.effect("exposes chat and responses factories per compatible family", () =>
+    Effect.gen(function* () {
+      const deepseek = OpenAICompatible.deepseek.configure({ apiKey: "test-key" })
+      expect(deepseek.responses("deepseek-reasoner")).toMatchObject({
+        id: "deepseek-reasoner",
+        provider: "deepseek",
+        route: { id: "openai-compatible-responses" },
+      })
+      expect(deepseek.responses("deepseek-reasoner").route.endpoint.baseURL).toBe("https://api.deepseek.com/v1")
+      expect(deepseek.chat("deepseek-chat").route.id).toBe("openai-compatible-chat")
+      expect(deepseek.model("deepseek-chat").route.id).toBe("openai-compatible-chat")
+
+      const groq = OpenAICompatible.groq.configure({ apiKey: "test-key" })
+      expect(groq.model("llama-3.3-70b").route.id).toBe("openai-compatible-chat")
+
+      const generic = OpenAICompatible.configure({
+        provider: "custom",
+        baseURL: "https://custom.example.test/v1",
+        apiKey: "test-key",
+      })
+      expect(generic.responses("any-model")).toMatchObject({
+        provider: "custom",
+        route: { id: "openai-compatible-responses" },
+      })
+    }),
+  )
+
+  test("declares Responses capability only for deepseek profiles", () => {
+    expect(profiles.deepseek.supportsResponses).toBe(true)
+    for (const profile of Object.values(byProvider)) {
+      if (profile.provider === "deepseek") continue
+      expect(profile.supportsResponses ?? false).toBe(false)
+    }
+    expect(byProvider["deepseek"]?.supportsResponses).toBe(true)
+    expect(byProvider["groq"]?.supportsResponses).toBeUndefined()
+  })
+
+  it.effect("posts to the configured /responses endpoint and parses the stream", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.gen(function* () {
+              const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
+              expect(web.url).toBe("https://api.deepseek.test/v1/responses")
+              expect(web.headers.get("authorization")).toBe("Bearer test-key")
+              expect(decodeJson(input.text)).toMatchObject({ model: "deepseek-reasoner", stream: true })
+              return input.respond(
+                sseEvents(
+                  { type: "response.output_text.delta", item_id: "msg_1", delta: "Hello" },
+                  { type: "response.output_text.delta", item_id: "msg_1", delta: "!" },
+                  {
+                    type: "response.completed",
+                    response: { id: "resp_1", usage: { input_tokens: 5, output_tokens: 2, total_tokens: 7 } },
+                  },
+                ),
+                { headers: { "content-type": "text/event-stream" } },
+              )
+            }),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("Hello!")
+      expect(response.usage).toMatchObject({ inputTokens: 5, outputTokens: 2, totalTokens: 7 })
+      expect(response.events.at(-1)).toMatchObject({ type: "finish", reason: "stop" })
+    }),
+  )
+})
diff --git a/packages/llm/test/provider/openai-responses-compact.test.ts b/packages/llm/test/provider/openai-responses-compact.test.ts
new file mode 100644
index 00000000..d984cb89
--- /dev/null
+++ b/packages/llm/test/provider/openai-responses-compact.test.ts
@@ -0,0 +1,203 @@
+import { describe, expect, test } from "bun:test"
+import { Effect } from "effect"
+import { HttpClientRequest } from "effect/unstable/http"
+import { LLM, LLMError } from "../../src"
+import { Auth, RequestExecutor } from "../../src/route"
+import * as OpenAIChat from "../../src/protocols/openai-chat"
+import * as OpenAIResponses from "../../src/protocols/openai-responses"
+import { byProvider as OpenAICompatibleProfiles, type OpenAICompatibleProfile } from "../../src/providers/openai-compatible-profile"
+import { it } from "../lib/effect"
+import { dynamicResponse, fixedResponse } from "../lib/http"
+
+const JSON_HEADERS = { "content-type": "application/json" } as const
+
+const model = OpenAIResponses.route
+  .with({ endpoint: { baseURL: "https://api.openai.test/v1/" }, auth: Auth.bearer("test") })
+  .model({ id: "gpt-4.1-mini" })
+
+const request = LLM.request({
+  id: "req_compact",
+  model,
+  system: "You are concise.",
+  prompt: "Summarize this session.",
+  generation: { maxTokens: 20, temperature: 0 },
+})
+
+const compactBody = (encryptedContent = "enc-blob") =>
+  JSON.stringify({ output: [{ type: "compaction", id: "cmp_1", encrypted_content: encryptedContent }] })
+
+// Unary compaction must never consume a status-retry budget: a failed compact
+// should fail over to local summarization immediately, not burn retries.
+// Applied inside each pipe exactly like executor.test.ts does.
+
+const readBody = (request: HttpClientRequest.HttpClientRequest) =>
+  HttpClientRequest.toWeb(request).pipe(
+    Effect.orDie,
+    Effect.flatMap((web) => Effect.promise(() => web.json())),
+  )
+
+describe("OpenAI Responses unary compaction (/responses/compact)", () => {
+  it.effect("posts a unary compact request with the stream field stripped", () =>
+    OpenAIResponses.compactConversation({ request }).pipe(
+      Effect.provide(
+        dynamicResponse((input) =>
+          Effect.gen(function* () {
+            const web = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
+            expect(web.url).toBe("https://api.openai.test/v1/responses/compact")
+            expect(web.method).toBe("POST")
+            expect(web.headers.get("content-type")).toBe("application/json")
+            const body = (yield* Effect.promise(() => web.json())) as Record<string, unknown>
+            expect(body.model).toBe("gpt-4.1-mini")
+            expect(body.stream).toBeUndefined()
+            expect(body.tool_choice).toBeUndefined()
+            expect(body.input).toEqual([
+              { role: "system", content: "You are concise." },
+              { role: "user", content: [{ type: "input_text", text: "Summarize this session." }] },
+            ])
+            return input.respond(compactBody(), { headers: JSON_HEADERS })
+          }),
+        ),
+      ),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+    ),
+  )
+
+  it.effect("prepends the prior compaction item when previousEncryptedContent is staged", () =>
+    OpenAIResponses.compactConversation({ request, previousEncryptedContent: "prior-enc" }).pipe(
+      Effect.provide(
+        dynamicResponse((input) =>
+          Effect.gen(function* () {
+            const body = (yield* readBody(input.request)) as Record<string, unknown>
+            const inputItems = body.input as ReadonlyArray<Record<string, unknown>>
+            expect(inputItems[0]).toEqual({ type: "compaction", encrypted_content: "prior-enc" })
+            expect(inputItems[1]).toEqual({ role: "system", content: "You are concise." })
+            return input.respond(compactBody("enc-blob-2"), { headers: JSON_HEADERS })
+          }),
+        ),
+      ),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+    ),
+  )
+
+  it.effect("parses the compact response and surfaces the encrypted context", () =>
+    OpenAIResponses.compactConversation({ request }).pipe(
+      Effect.provide(fixedResponse(compactBody("enc-abc"), { headers: JSON_HEADERS })),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      Effect.tap((result) =>
+        Effect.sync(() => {
+          expect(result.encryptedContent).toBe("enc-abc")
+          expect(result.output).toEqual([{ type: "compaction", id: "cmp_1", encrypted_content: "enc-abc" }])
+        }),
+      ),
+    ),
+  )
+
+  it.effect("round-trips encrypted_content across successive compactions", () =>
+    Effect.gen(function* () {
+      const first = yield* OpenAIResponses.compactConversation({ request }).pipe(
+        Effect.provide(fixedResponse(compactBody("enc-round-1"), { headers: JSON_HEADERS })),
+        Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      )
+      expect(first.encryptedContent).toBe("enc-round-1")
+      const second = yield* OpenAIResponses.compactConversation({
+        request,
+        previousEncryptedContent: first.encryptedContent,
+      }).pipe(
+        Effect.provide(
+          dynamicResponse((input) =>
+            Effect.gen(function* () {
+              const body = (yield* readBody(input.request)) as Record<string, unknown>
+              expect((body.input as ReadonlyArray<Record<string, unknown>>)[0]).toEqual({
+                type: "compaction",
+                encrypted_content: "enc-round-1",
+              })
+              return input.respond(compactBody("enc-round-2"), { headers: JSON_HEADERS })
+            }),
+          ),
+        ),
+        Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      )
+      expect(second.encryptedContent).toBe("enc-round-2")
+    }),
+  )
+
+  it.effect("fails when the response carries no compaction item (local fail-over signal)", () =>
+    OpenAIResponses.compactConversation({ request }).pipe(
+      Effect.provide(fixedResponse(JSON.stringify({ output: [] }), { headers: JSON_HEADERS })),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      Effect.flip,
+      Effect.tap((error) =>
+        Effect.sync(() => {
+          expect(error).toBeInstanceOf(LLMError)
+          expect(error.reason).toMatchObject({ _tag: "InvalidRequest" })
+        }),
+      ),
+    ),
+  )
+
+  it.effect("fails on a malformed compact payload (local fail-over signal)", () =>
+    OpenAIResponses.compactConversation({ request }).pipe(
+      Effect.provide(fixedResponse("not-json", { headers: JSON_HEADERS })),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      Effect.flip,
+      Effect.tap((error) =>
+        Effect.sync(() => {
+          expect(error).toBeInstanceOf(LLMError)
+        }),
+      ),
+    ),
+  )
+
+  it.effect("fails on provider HTTP errors (local fail-over signal)", () =>
+    OpenAIResponses.compactConversation({ request }).pipe(
+      Effect.provide(fixedResponse(JSON.stringify({ error: "boom" }), { status: 500, headers: JSON_HEADERS })),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      Effect.flip,
+      Effect.tap((error) =>
+        Effect.sync(() => {
+          expect(error).toBeInstanceOf(LLMError)
+          expect(error.reason).toMatchObject({ _tag: "ProviderInternal" })
+        }),
+      ),
+    ),
+  )
+
+  it.effect("rejects requests bound to a non-responses route", () =>
+    OpenAIResponses.compactConversation({
+      request: LLM.request({
+        id: "req_chat",
+        model: OpenAIChat.route.model({ id: "gpt-4.1-mini" }),
+        prompt: "hi",
+      }),
+    }).pipe(
+      // The route check fails before any HTTP happens; the layer only exists
+      // to satisfy the environment requirement.
+      Effect.provide(fixedResponse("unused", { headers: JSON_HEADERS })),
+      Effect.provideService(RequestExecutor.CurrentRetryLimit, 0),
+      Effect.flip,
+      Effect.tap((error) =>
+        Effect.sync(() => {
+          expect(error).toBeInstanceOf(LLMError)
+          expect(error.reason).toMatchObject({ _tag: "InvalidRequest" })
+        }),
+      ),
+    ),
+  )
+})
+
+describe("remote compaction capability flags", () => {
+  test("exposes compact support on the OpenAI Responses protocol", () => {
+    expect(OpenAIResponses.supportsRemoteCompaction).toBe(true)
+    expect(OpenAIResponses.COMPACT_PATH).toBe("/responses/compact")
+  })
+
+  test("only verified opt-ins assume compact support among OpenAI-compatible families", () => {
+    // 2026-08-18 用户决策:DeepSeek 官方 API 支持 /responses/compact,为已验证 opt-in;
+    // 其余 openai-compatible 家族(含 vLLM/SGLang 类)永不默认假设。
+    expect(OpenAICompatibleProfiles["deepseek"]?.supportsResponsesCompact).toBe(true)
+    for (const [provider, profile] of Object.entries(OpenAICompatibleProfiles)) {
+      if (provider === "deepseek") continue
+      expect((profile as OpenAICompatibleProfile).supportsResponsesCompact ?? false).toBe(false)
+    }
+  })
+})
diff --git a/packages/llm/test/provider/openai-responses.test.ts b/packages/llm/test/provider/openai-responses.test.ts
index 55c5e09f..947a483a 100644
--- a/packages/llm/test/provider/openai-responses.test.ts
+++ b/packages/llm/test/provider/openai-responses.test.ts
@@ -1638,3 +1638,86 @@ describe("OpenAI Responses route", () => {
     }),
   )
 })
+
+// UPD-002: wire-level structured output (text.format json_schema).
+describe("OpenAI Responses wire structured output", () => {
+  const wireSchema = {
+    type: "object",
+    properties: { answer: { type: "number" } },
+    required: ["answer"],
+  }
+  const wireRequest = LLM.updateRequest(request, {
+    responseFormat: { type: "json", schema: wireSchema, name: "answer_format" },
+  })
+
+  it.effect("lowers responseFormat json onto text.format", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(wireRequest)
+
+      expect(prepared.body.text).toEqual({
+        format: { type: "json_schema", name: "answer_format", schema: wireSchema },
+      })
+    }),
+  )
+
+  it.effect("defaults the format name and keeps strict opt-in absent", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(
+        LLM.updateRequest(request, { responseFormat: { type: "json", schema: wireSchema } }),
+      )
+
+      expect(prepared.body.text?.format).toEqual({ type: "json_schema", name: "structured_output", schema: wireSchema })
+      expect(prepared.body.text?.format).not.toHaveProperty("strict")
+    }),
+  )
+
+  it.effect("omits text.format without a json responseFormat", () =>
+    Effect.gen(function* () {
+      const prepared = yield* LLMClient.prepare<OpenAIResponses.OpenAIResponsesBody>(request)
+
+      expect(prepared.body).not.toHaveProperty("text")
+    }),
+  )
+
+  it.effect("accepts well-formed JSON output under wire format", () =>
+    Effect.gen(function* () {
+      const body = sseEvents(
+        { type: "response.output_text.delta", item_id: "msg_1", delta: '{"ans' },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: 'wer": 4}' },
+        { type: "response.completed", response: { id: "resp_wire" } },
+      )
+      const response = yield* LLMClient.generate(wireRequest).pipe(Effect.provide(fixedResponse(body)))
+
+      const text = response.events.filter((event) => event.type.startsWith("text"))
+      expect(text.length).toBeGreaterThan(0)
+      expect(response.events.some((event) => event.type === "finish")).toBe(true)
+    }),
+  )
+
+  it.effect("fails with InvalidProviderOutput when wire output is not JSON", () =>
+    Effect.gen(function* () {
+      const body = sseEvents(
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "Sure! The answer is " },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "four." },
+        { type: "response.completed", response: { id: "resp_wire_bad" } },
+      )
+      const error = yield* LLMClient.generate(wireRequest).pipe(Effect.provide(fixedResponse(body)), Effect.flip)
+
+      expect(error).toBeInstanceOf(LLMError)
+      expect(error.reason).toMatchObject({ _tag: "InvalidProviderOutput" })
+      expect(error.message).toContain("not valid JSON")
+    }),
+  )
+
+  it.effect("does not validate text as JSON without a wire format", () =>
+    Effect.gen(function* () {
+      const body = sseEvents(
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "plain prose" },
+        { type: "response.completed", response: { id: "resp_plain" } },
+      )
+      const response = yield* LLMClient.generate(request).pipe(Effect.provide(fixedResponse(body)))
+
+      expect(response.events.some((event) => event.type === "finish")).toBe(true)
+    }),
+  )
+})
diff --git a/packages/sdk/js/src/gen/sdk.gen.ts b/packages/sdk/js/src/gen/sdk.gen.ts
index a62ef350..8288d50f 100644
--- a/packages/sdk/js/src/gen/sdk.gen.ts
+++ b/packages/sdk/js/src/gen/sdk.gen.ts
@@ -381,6 +381,8 @@ import type {
   SessionCommandResponses,
   SessionContextAttemptResolveErrors,
   SessionContextAttemptResolveResponses,
+  SessionContextCohortErrors,
+  SessionContextCohortResponses,
   SessionContextDiagnosticsErrors,
   SessionContextDiagnosticsResponses,
   SessionCreateErrors,
@@ -395,10 +397,14 @@ import type {
   SessionDiffArtifactManifestResponses,
   SessionDiffErrors,
   SessionDiffResponses,
+  SessionExportSnapshotErrors,
+  SessionExportSnapshotResponses,
   SessionForkErrors,
   SessionForkResponses,
   SessionGetErrors,
   SessionGetResponses,
+  SessionImportSnapshotErrors,
+  SessionImportSnapshotResponses,
   SessionInitErrors,
   SessionInitResponses,
   SessionListErrors,
@@ -8483,6 +8489,44 @@ export class Session2 extends HeyApiClient {
     })
   }
 
+  /**
+   * Aggregate federated context selections across sessions
+   *
+   * FEAT-005: durable cohort aggregation over [sinceMs, untilMs], bucketed by readiness (ready/building/degraded/blocked) so rollout decisions are not skewed by cold-start noise.
+   */
+  public contextCohort<ThrowOnError extends boolean = false>(
+    parameters: {
+      directory?: string
+      workspace?: string
+      sinceMs: string
+      untilMs?: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams(
+      [parameters],
+      [
+        {
+          args: [
+            { in: "query", key: "directory" },
+            { in: "query", key: "workspace" },
+            { in: "query", key: "sinceMs" },
+            { in: "query", key: "untilMs" },
+          ],
+        },
+      ],
+    )
+    return (options?.client ?? this.client).get<
+      SessionContextCohortResponses,
+      SessionContextCohortErrors,
+      ThrowOnError
+    >({
+      url: "/session/context/cohort",
+      ...options,
+      ...params,
+    })
+  }
+
   /**
    * List provider recovery decisions
    *
@@ -8578,6 +8622,57 @@ export class Session2 extends HeyApiClient {
       },
     })
   }
+
+  /**
+   * Export a session snapshot
+   *
+   * Export the session's conversation (session + messages + parts) as a self-describing snapshot bundle (JSON). The bundle re-imports on another device as a fresh, continuable session.
+   */
+  public exportSnapshot<ThrowOnError extends boolean = false>(
+    parameters: {
+      sessionID: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams([parameters], [{ args: [{ in: "path", key: "sessionID" }] }])
+    return (options?.client ?? this.client).get<
+      SessionExportSnapshotResponses,
+      SessionExportSnapshotErrors,
+      ThrowOnError
+    >({
+      url: "/session/{sessionID}/export",
+      ...options,
+      ...params,
+    })
+  }
+
+  /**
+   * Import a session snapshot
+   *
+   * Import a previously exported session bundle into the current instance as a fresh, continuable session (new IDs, re-rooted to the current project/directory).
+   */
+  public importSnapshot<ThrowOnError extends boolean = false>(
+    parameters: {
+      bundle: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams([parameters], [{ args: [{ in: "body", key: "bundle" }] }])
+    return (options?.client ?? this.client).post<
+      SessionImportSnapshotResponses,
+      SessionImportSnapshotErrors,
+      ThrowOnError
+    >({
+      url: "/session/import-snapshot",
+      ...options,
+      ...params,
+      headers: {
+        "Content-Type": "application/json",
+        ...options?.headers,
+        ...params.headers,
+      },
+    })
+  }
 }
 
 export class Part extends HeyApiClient {
diff --git a/packages/sdk/js/src/gen/types.gen.ts b/packages/sdk/js/src/gen/types.gen.ts
index 8582e1fe..3596df6f 100644
--- a/packages/sdk/js/src/gen/types.gen.ts
+++ b/packages/sdk/js/src/gen/types.gen.ts
@@ -92,11 +92,11 @@ export type Event =
   | EventSessionIdle
   | EventSessionCompacted
   | EventPlanUpdated
+  | EventGoalUpdated
   | EventDebugStopped
   | EventDebugOutput
   | EventDebugTerminated
   | EventDebugUpdated
-  | EventGoalUpdated
   | EventVcsBranchUpdated
   | EventWorkspaceReady
   | EventWorkspaceFailed
@@ -1797,6 +1797,24 @@ export type GlobalEvent = {
           changes?: Array<string>
         }
       }
+    | {
+        id: string
+        type: "goal.updated"
+        properties: {
+          sessionID: string
+          goalId: string
+          planDocId: string
+          phase: string
+          ledger: {
+            ticks: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            tokens: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            cost: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            wallclockMs: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+          }
+          stallCount: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+          gaps: Array<string>
+        }
+      }
     | {
         id: string
         type: "debug.stopped"
@@ -1830,24 +1848,6 @@ export type GlobalEvent = {
           status: string
         }
       }
-    | {
-        id: string
-        type: "goal.updated"
-        properties: {
-          sessionID: string
-          goalId: string
-          planDocId: string
-          phase: string
-          ledger: {
-            ticks: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            tokens: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            cost: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            wallclockMs: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-          }
-          stallCount: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-          gaps: Array<string>
-        }
-      }
     | {
         id: string
         type: "vcs.branch.updated"
@@ -2201,6 +2201,7 @@ export type ProviderConfig = {
           [key: string]: unknown
         }
       }
+      disabled?: boolean
     }
   }
   groups?: {
@@ -6993,6 +6994,25 @@ export type EventPlanUpdated = {
   }
 }
 
+export type EventGoalUpdated = {
+  id: string
+  type: "goal.updated"
+  properties: {
+    sessionID: string
+    goalId: string
+    planDocId: string
+    phase: string
+    ledger: {
+      ticks: number | "NaN" | "Infinity" | "-Infinity"
+      tokens: number | "NaN" | "Infinity" | "-Infinity"
+      cost: number | "NaN" | "Infinity" | "-Infinity"
+      wallclockMs: number | "NaN" | "Infinity" | "-Infinity"
+    }
+    stallCount: number | "NaN" | "Infinity" | "-Infinity"
+    gaps: Array<string>
+  }
+}
+
 export type EventDebugStopped = {
   id: string
   type: "debug.stopped"
@@ -7030,25 +7050,6 @@ export type EventDebugUpdated = {
   }
 }
 
-export type EventGoalUpdated = {
-  id: string
-  type: "goal.updated"
-  properties: {
-    sessionID: string
-    goalId: string
-    planDocId: string
-    phase: string
-    ledger: {
-      ticks: number | "NaN" | "Infinity" | "-Infinity"
-      tokens: number | "NaN" | "Infinity" | "-Infinity"
-      cost: number | "NaN" | "Infinity" | "-Infinity"
-      wallclockMs: number | "NaN" | "Infinity" | "-Infinity"
-    }
-    stallCount: number | "NaN" | "Infinity" | "-Infinity"
-    gaps: Array<string>
-  }
-}
-
 export type EventVcsBranchUpdated = {
   id: string
   type: "vcs.branch.updated"
@@ -15380,6 +15381,72 @@ export type SessionContextAttemptResolveResponses = {
 export type SessionContextAttemptResolveResponse =
   SessionContextAttemptResolveResponses[keyof SessionContextAttemptResolveResponses]
 
+export type SessionContextCohortData = {
+  body?: never
+  path?: never
+  query: {
+    directory?: string
+    workspace?: string
+    sinceMs: string
+    untilMs?: string
+  }
+  url: "/session/context/cohort"
+}
+
+export type SessionContextCohortErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+}
+
+export type SessionContextCohortError = SessionContextCohortErrors[keyof SessionContextCohortErrors]
+
+export type SessionContextCohortResponses = {
+  /**
+   * Cohort-level federated context aggregation
+   */
+  200: {
+    window: {
+      sinceMs: number
+      untilMs: number
+    }
+    selections: number
+    sessions: number
+    tokens: number
+    readiness: {
+      ready: number
+      building: number
+      degraded: number
+      blocked: number
+    }
+    graphs: {
+      code: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      knowledge: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      memory: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      documents: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+    }
+  }
+}
+
+export type SessionContextCohortResponse = SessionContextCohortResponses[keyof SessionContextCohortResponses]
+
 export type SessionProviderResolutionListData = {
   body?: never
   path: {
@@ -15485,6 +15552,68 @@ export type SessionProviderResolutionResolveResponses = {
 export type SessionProviderResolutionResolveResponse =
   SessionProviderResolutionResolveResponses[keyof SessionProviderResolutionResolveResponses]
 
+export type SessionExportSnapshotData = {
+  body?: never
+  path: {
+    sessionID: string
+  }
+  query?: never
+  url: "/session/{sessionID}/export"
+}
+
+export type SessionExportSnapshotErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+  /**
+   * NotFoundError
+   */
+  404: NotFoundError
+}
+
+export type SessionExportSnapshotError = SessionExportSnapshotErrors[keyof SessionExportSnapshotErrors]
+
+export type SessionExportSnapshotResponses = {
+  /**
+   * Session snapshot bundle as a JSON string
+   */
+  200: string
+}
+
+export type SessionExportSnapshotResponse = SessionExportSnapshotResponses[keyof SessionExportSnapshotResponses]
+
+export type SessionImportSnapshotData = {
+  body?: {
+    bundle: string
+  }
+  path?: never
+  query?: never
+  url: "/session/import-snapshot"
+}
+
+export type SessionImportSnapshotErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+}
+
+export type SessionImportSnapshotError = SessionImportSnapshotErrors[keyof SessionImportSnapshotErrors]
+
+export type SessionImportSnapshotResponses = {
+  /**
+   * Imported session summary
+   */
+  200: {
+    sessionID: string
+    messages: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+    parts: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+  }
+}
+
+export type SessionImportSnapshotResponse = SessionImportSnapshotResponses[keyof SessionImportSnapshotResponses]
+
 export type SyncStartData = {
   body?: never
   path?: never
diff --git a/packages/sdk/js/src/v2/gen/sdk.gen.ts b/packages/sdk/js/src/v2/gen/sdk.gen.ts
index a62ef350..8288d50f 100644
--- a/packages/sdk/js/src/v2/gen/sdk.gen.ts
+++ b/packages/sdk/js/src/v2/gen/sdk.gen.ts
@@ -381,6 +381,8 @@ import type {
   SessionCommandResponses,
   SessionContextAttemptResolveErrors,
   SessionContextAttemptResolveResponses,
+  SessionContextCohortErrors,
+  SessionContextCohortResponses,
   SessionContextDiagnosticsErrors,
   SessionContextDiagnosticsResponses,
   SessionCreateErrors,
@@ -395,10 +397,14 @@ import type {
   SessionDiffArtifactManifestResponses,
   SessionDiffErrors,
   SessionDiffResponses,
+  SessionExportSnapshotErrors,
+  SessionExportSnapshotResponses,
   SessionForkErrors,
   SessionForkResponses,
   SessionGetErrors,
   SessionGetResponses,
+  SessionImportSnapshotErrors,
+  SessionImportSnapshotResponses,
   SessionInitErrors,
   SessionInitResponses,
   SessionListErrors,
@@ -8483,6 +8489,44 @@ export class Session2 extends HeyApiClient {
     })
   }
 
+  /**
+   * Aggregate federated context selections across sessions
+   *
+   * FEAT-005: durable cohort aggregation over [sinceMs, untilMs], bucketed by readiness (ready/building/degraded/blocked) so rollout decisions are not skewed by cold-start noise.
+   */
+  public contextCohort<ThrowOnError extends boolean = false>(
+    parameters: {
+      directory?: string
+      workspace?: string
+      sinceMs: string
+      untilMs?: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams(
+      [parameters],
+      [
+        {
+          args: [
+            { in: "query", key: "directory" },
+            { in: "query", key: "workspace" },
+            { in: "query", key: "sinceMs" },
+            { in: "query", key: "untilMs" },
+          ],
+        },
+      ],
+    )
+    return (options?.client ?? this.client).get<
+      SessionContextCohortResponses,
+      SessionContextCohortErrors,
+      ThrowOnError
+    >({
+      url: "/session/context/cohort",
+      ...options,
+      ...params,
+    })
+  }
+
   /**
    * List provider recovery decisions
    *
@@ -8578,6 +8622,57 @@ export class Session2 extends HeyApiClient {
       },
     })
   }
+
+  /**
+   * Export a session snapshot
+   *
+   * Export the session's conversation (session + messages + parts) as a self-describing snapshot bundle (JSON). The bundle re-imports on another device as a fresh, continuable session.
+   */
+  public exportSnapshot<ThrowOnError extends boolean = false>(
+    parameters: {
+      sessionID: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams([parameters], [{ args: [{ in: "path", key: "sessionID" }] }])
+    return (options?.client ?? this.client).get<
+      SessionExportSnapshotResponses,
+      SessionExportSnapshotErrors,
+      ThrowOnError
+    >({
+      url: "/session/{sessionID}/export",
+      ...options,
+      ...params,
+    })
+  }
+
+  /**
+   * Import a session snapshot
+   *
+   * Import a previously exported session bundle into the current instance as a fresh, continuable session (new IDs, re-rooted to the current project/directory).
+   */
+  public importSnapshot<ThrowOnError extends boolean = false>(
+    parameters: {
+      bundle: string
+    },
+    options?: Options<never, ThrowOnError>,
+  ) {
+    const params = buildClientParams([parameters], [{ args: [{ in: "body", key: "bundle" }] }])
+    return (options?.client ?? this.client).post<
+      SessionImportSnapshotResponses,
+      SessionImportSnapshotErrors,
+      ThrowOnError
+    >({
+      url: "/session/import-snapshot",
+      ...options,
+      ...params,
+      headers: {
+        "Content-Type": "application/json",
+        ...options?.headers,
+        ...params.headers,
+      },
+    })
+  }
 }
 
 export class Part extends HeyApiClient {
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 8582e1fe..3596df6f 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -92,11 +92,11 @@ export type Event =
   | EventSessionIdle
   | EventSessionCompacted
   | EventPlanUpdated
+  | EventGoalUpdated
   | EventDebugStopped
   | EventDebugOutput
   | EventDebugTerminated
   | EventDebugUpdated
-  | EventGoalUpdated
   | EventVcsBranchUpdated
   | EventWorkspaceReady
   | EventWorkspaceFailed
@@ -1797,6 +1797,24 @@ export type GlobalEvent = {
           changes?: Array<string>
         }
       }
+    | {
+        id: string
+        type: "goal.updated"
+        properties: {
+          sessionID: string
+          goalId: string
+          planDocId: string
+          phase: string
+          ledger: {
+            ticks: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            tokens: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            cost: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+            wallclockMs: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+          }
+          stallCount: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+          gaps: Array<string>
+        }
+      }
     | {
         id: string
         type: "debug.stopped"
@@ -1830,24 +1848,6 @@ export type GlobalEvent = {
           status: string
         }
       }
-    | {
-        id: string
-        type: "goal.updated"
-        properties: {
-          sessionID: string
-          goalId: string
-          planDocId: string
-          phase: string
-          ledger: {
-            ticks: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            tokens: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            cost: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-            wallclockMs: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-          }
-          stallCount: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
-          gaps: Array<string>
-        }
-      }
     | {
         id: string
         type: "vcs.branch.updated"
@@ -2201,6 +2201,7 @@ export type ProviderConfig = {
           [key: string]: unknown
         }
       }
+      disabled?: boolean
     }
   }
   groups?: {
@@ -6993,6 +6994,25 @@ export type EventPlanUpdated = {
   }
 }
 
+export type EventGoalUpdated = {
+  id: string
+  type: "goal.updated"
+  properties: {
+    sessionID: string
+    goalId: string
+    planDocId: string
+    phase: string
+    ledger: {
+      ticks: number | "NaN" | "Infinity" | "-Infinity"
+      tokens: number | "NaN" | "Infinity" | "-Infinity"
+      cost: number | "NaN" | "Infinity" | "-Infinity"
+      wallclockMs: number | "NaN" | "Infinity" | "-Infinity"
+    }
+    stallCount: number | "NaN" | "Infinity" | "-Infinity"
+    gaps: Array<string>
+  }
+}
+
 export type EventDebugStopped = {
   id: string
   type: "debug.stopped"
@@ -7030,25 +7050,6 @@ export type EventDebugUpdated = {
   }
 }
 
-export type EventGoalUpdated = {
-  id: string
-  type: "goal.updated"
-  properties: {
-    sessionID: string
-    goalId: string
-    planDocId: string
-    phase: string
-    ledger: {
-      ticks: number | "NaN" | "Infinity" | "-Infinity"
-      tokens: number | "NaN" | "Infinity" | "-Infinity"
-      cost: number | "NaN" | "Infinity" | "-Infinity"
-      wallclockMs: number | "NaN" | "Infinity" | "-Infinity"
-    }
-    stallCount: number | "NaN" | "Infinity" | "-Infinity"
-    gaps: Array<string>
-  }
-}
-
 export type EventVcsBranchUpdated = {
   id: string
   type: "vcs.branch.updated"
@@ -15380,6 +15381,72 @@ export type SessionContextAttemptResolveResponses = {
 export type SessionContextAttemptResolveResponse =
   SessionContextAttemptResolveResponses[keyof SessionContextAttemptResolveResponses]
 
+export type SessionContextCohortData = {
+  body?: never
+  path?: never
+  query: {
+    directory?: string
+    workspace?: string
+    sinceMs: string
+    untilMs?: string
+  }
+  url: "/session/context/cohort"
+}
+
+export type SessionContextCohortErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+}
+
+export type SessionContextCohortError = SessionContextCohortErrors[keyof SessionContextCohortErrors]
+
+export type SessionContextCohortResponses = {
+  /**
+   * Cohort-level federated context aggregation
+   */
+  200: {
+    window: {
+      sinceMs: number
+      untilMs: number
+    }
+    selections: number
+    sessions: number
+    tokens: number
+    readiness: {
+      ready: number
+      building: number
+      degraded: number
+      blocked: number
+    }
+    graphs: {
+      code: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      knowledge: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      memory: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+      documents: {
+        statuses: number
+        ready: number
+        notReady: number
+      }
+    }
+  }
+}
+
+export type SessionContextCohortResponse = SessionContextCohortResponses[keyof SessionContextCohortResponses]
+
 export type SessionProviderResolutionListData = {
   body?: never
   path: {
@@ -15485,6 +15552,68 @@ export type SessionProviderResolutionResolveResponses = {
 export type SessionProviderResolutionResolveResponse =
   SessionProviderResolutionResolveResponses[keyof SessionProviderResolutionResolveResponses]
 
+export type SessionExportSnapshotData = {
+  body?: never
+  path: {
+    sessionID: string
+  }
+  query?: never
+  url: "/session/{sessionID}/export"
+}
+
+export type SessionExportSnapshotErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+  /**
+   * NotFoundError
+   */
+  404: NotFoundError
+}
+
+export type SessionExportSnapshotError = SessionExportSnapshotErrors[keyof SessionExportSnapshotErrors]
+
+export type SessionExportSnapshotResponses = {
+  /**
+   * Session snapshot bundle as a JSON string
+   */
+  200: string
+}
+
+export type SessionExportSnapshotResponse = SessionExportSnapshotResponses[keyof SessionExportSnapshotResponses]
+
+export type SessionImportSnapshotData = {
+  body?: {
+    bundle: string
+  }
+  path?: never
+  query?: never
+  url: "/session/import-snapshot"
+}
+
+export type SessionImportSnapshotErrors = {
+  /**
+   * BadRequest | InvalidRequestError
+   */
+  400: EffectHttpApiErrorBadRequest | InvalidRequestError
+}
+
+export type SessionImportSnapshotError = SessionImportSnapshotErrors[keyof SessionImportSnapshotErrors]
+
+export type SessionImportSnapshotResponses = {
+  /**
+   * Imported session summary
+   */
+  200: {
+    sessionID: string
+    messages: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+    parts: number | "NaN" | "Infinity" | "-Infinity" | "Infinity" | "-Infinity" | "NaN"
+  }
+}
+
+export type SessionImportSnapshotResponse = SessionImportSnapshotResponses[keyof SessionImportSnapshotResponses]
+
 export type SyncStartData = {
   body?: never
   path?: never
diff --git a/packages/ui/src/components/file.tsx b/packages/ui/src/components/file.tsx
index 891947b1..6a9abb76 100644
--- a/packages/ui/src/components/file.tsx
+++ b/packages/ui/src/components/file.tsx
@@ -533,6 +533,11 @@ function preserve(viewer: Viewer) {
   }
 }
 
+// The diff virtualizer binds to the nearest overflow-y: auto/scroll ancestor. When no such
+// ancestor exists below an outer row-level virtualizer (e.g. the session timeline's virtua
+// scroller), both virtualizers share the same scroll root and inner height changes force the
+// outer one to re-measure. Callers enabling `virtualize` inside an outer virtualized list
+// should wrap the viewer in a bounded-height overflow-y: auto container (UX-001, message-part.tsx).
 function scrollParent(el: HTMLElement): HTMLElement | undefined {
   let parent = el.parentElement
   while (parent) {
diff --git a/packages/ui/src/components/message-part-chunk.test.ts b/packages/ui/src/components/message-part-chunk.test.ts
new file mode 100644
index 00000000..76eb77e3
--- /dev/null
+++ b/packages/ui/src/components/message-part-chunk.test.ts
@@ -0,0 +1,97 @@
+import { describe, expect, test } from "bun:test"
+import { CHUNK_THRESHOLD, chunkCacheKey, partChunks, splitPartChunks } from "./message-part-chunk"
+
+const KB = 1024
+
+/** Builds `count` paragraphs of ~4KB each (content + trailing blank line). */
+function paragraphs(count: number) {
+  return Array.from({ length: count }, (_, i) => `paragraph-${i} ` + "x".repeat(4 * KB) + "\n\n").join("")
+}
+
+describe("partChunks (chunk decision)", () => {
+  test("does not chunk text at or below the threshold", () => {
+    expect(partChunks("x".repeat(CHUNK_THRESHOLD), false)).toBeUndefined()
+    expect(partChunks("small text", false)).toBeUndefined()
+    expect(partChunks("", false)).toBeUndefined()
+  })
+
+  test("chunks completed text above the threshold", () => {
+    const chunks = partChunks(paragraphs(100), false)
+    expect(chunks).toBeDefined()
+    expect(chunks!.length).toBeGreaterThan(1)
+  })
+
+  test("never chunks while streaming, even above the threshold", () => {
+    expect(partChunks(paragraphs(100), true)).toBeUndefined()
+    expect(partChunks("x".repeat(CHUNK_THRESHOLD * 4), true)).toBeUndefined()
+  })
+})
+
+describe("splitPartChunks", () => {
+  test("returns the text untouched when it is a single chunk", () => {
+    const text = paragraphs(10)
+    expect(splitPartChunks(text)).toEqual([text])
+  })
+
+  test("preserves content exactly (join === original)", () => {
+    const text = paragraphs(100)
+    expect(splitPartChunks(text).join("")).toBe(text)
+  })
+
+  test("keeps chunk sizes within 64-256KB", () => {
+    const chunks = splitPartChunks(paragraphs(100))
+    expect(chunks.length).toBeGreaterThan(1)
+    for (const chunk of chunks) {
+      expect(chunk.length).toBeGreaterThan(0)
+      expect(chunk.length).toBeLessThanOrEqual(256 * KB)
+    }
+    for (const chunk of chunks.slice(0, -1)) {
+      expect(chunk.length).toBeGreaterThanOrEqual(64 * KB)
+    }
+  })
+
+  test("cuts at paragraph boundaries", () => {
+    const chunks = splitPartChunks(paragraphs(100))
+    for (const chunk of chunks.slice(0, -1)) {
+      expect(chunk.endsWith("\n\n")).toBe(true)
+    }
+  })
+
+  test("splits an oversized paragraph at newline boundaries", () => {
+    const huge = Array.from({ length: 400 }, (_, i) => `line-${i}-` + "y".repeat(1 * KB)).join("\n") + "\n\n"
+    const text = huge + paragraphs(10)
+    expect(text.length).toBeGreaterThan(CHUNK_THRESHOLD)
+    const chunks = splitPartChunks(text)
+    expect(chunks.length).toBeGreaterThan(1)
+    expect(chunks.join("")).toBe(text)
+    for (const chunk of chunks) {
+      expect(chunk.length).toBeLessThanOrEqual(256 * KB)
+    }
+  })
+
+  test("hard-slices a single line longer than the max chunk size", () => {
+    const text = "z".repeat(600 * KB)
+    const chunks = splitPartChunks(text)
+    expect(chunks.join("")).toBe(text)
+    for (const chunk of chunks) {
+      expect(chunk.length).toBeLessThanOrEqual(256 * KB)
+    }
+  })
+})
+
+describe("chunkCacheKey", () => {
+  test("is stable and follows the partID:chunk:index format", () => {
+    expect(chunkCacheKey("part_1", 0)).toBe("part_1:chunk:0")
+    expect(chunkCacheKey("part_1", 3)).toBe("part_1:chunk:3")
+    expect(chunkCacheKey("part_1", 0)).toBe(chunkCacheKey("part_1", 0))
+  })
+
+  test("produces distinct keys per chunk and per part", () => {
+    const keys = new Set([
+      chunkCacheKey("part_1", 0),
+      chunkCacheKey("part_1", 1),
+      chunkCacheKey("part_2", 0),
+    ])
+    expect(keys.size).toBe(3)
+  })
+})
diff --git a/packages/ui/src/components/message-part-chunk.ts b/packages/ui/src/components/message-part-chunk.ts
new file mode 100644
index 00000000..8a4be75c
--- /dev/null
+++ b/packages/ui/src/components/message-part-chunk.ts
@@ -0,0 +1,91 @@
+// UX-002: inline chunking for oversized text/reasoning parts. Row-level virtua
+// virtualization groups rows by turn, so a single huge part (observed up to ~16MB)
+// was mounted and morphdom-diffed as one monolithic Markdown block. We split the
+// completed text into 64-256KB pieces at paragraph/newline boundaries and render
+// each piece as an independent Markdown instance (see ChunkedText in
+// message-part.tsx). Kept as a pure, dependency-free module so the chunk logic is
+// unit-testable without pulling Solid component imports into the test runtime.
+
+export const CHUNK_THRESHOLD = 256 * 1024
+const CHUNK_MIN = 64 * 1024
+const CHUNK_MAX = 256 * 1024
+
+// Deterministic per (part text, index): part text is frozen once the message is
+// completed, so cache keys are stable across re-renders and re-mounts.
+export function chunkCacheKey(partID: string, index: number) {
+  return `${partID}:chunk:${index}`
+}
+
+function pushChunk(chunks: string[], buffer: string[]) {
+  const value = buffer.join("")
+  if (value) chunks.push(value)
+  buffer.length = 0
+}
+
+// Last-resort splitter for a single line longer than CHUNK_MAX (e.g. minified or
+// binary-ish dumps): hard slice; no newline boundary exists to respect.
+function pushOversized(chunks: string[], line: string) {
+  for (let start = 0; start < line.length; start += CHUNK_MAX) {
+    chunks.push(line.slice(start, start + CHUNK_MAX))
+  }
+}
+
+function flushLines(chunks: string[], block: string) {
+  const lines = block.split(/(?<=\n)/)
+  let buffer = ""
+  for (const line of lines) {
+    if (line.length >= CHUNK_MAX) {
+      if (buffer) {
+        chunks.push(buffer)
+        buffer = ""
+      }
+      pushOversized(chunks, line)
+      continue
+    }
+    if (buffer && buffer.length + line.length > CHUNK_MAX) {
+      chunks.push(buffer)
+      buffer = ""
+    }
+    buffer += line
+    if (buffer.length >= CHUNK_MIN) {
+      chunks.push(buffer)
+      buffer = ""
+    }
+  }
+  if (buffer) chunks.push(buffer)
+}
+
+// Splits completed part text into 64-256KB chunks. Primary boundaries are blank
+// lines (paragraphs); a paragraph larger than CHUNK_MAX is further split at
+// newline boundaries. Concatenating all chunks reproduces the input exactly.
+export function splitPartChunks(text: string): string[] {
+  if (text.length <= CHUNK_THRESHOLD) return [text]
+
+  const chunks: string[] = []
+  let buffer: string[] = []
+  const size = () => buffer.reduce((sum, item) => sum + item.length, 0)
+
+  const flush = () => pushChunk(chunks, buffer)
+
+  for (const paragraph of text.split(/(?<=\n\n)/)) {
+    if (paragraph.length >= CHUNK_MAX) {
+      if (size() >= CHUNK_MIN) flush()
+      else if (buffer.length > 0) flush()
+      flushLines(chunks, paragraph)
+      continue
+    }
+    if (size() + paragraph.length > CHUNK_MAX) flush()
+    buffer.push(paragraph)
+    if (size() >= CHUNK_MIN) flush()
+  }
+  flush()
+  return chunks
+}
+
+// Chunk decision: never split while the part is still streaming (a growing
+// buffer would shift chunk boundaries on every update); split only once the
+// completed text exceeds the threshold.
+export function partChunks(text: string, streaming: boolean): string[] | undefined {
+  if (streaming || text.length <= CHUNK_THRESHOLD) return
+  return splitPartChunks(text)
+}
diff --git a/packages/ui/src/components/message-part.tsx b/packages/ui/src/components/message-part.tsx
index 27fdf313..a587e104 100644
--- a/packages/ui/src/components/message-part.tsx
+++ b/packages/ui/src/components/message-part.tsx
@@ -58,6 +58,7 @@ import { animate } from "motion"
 import { useLocation } from "@solidjs/router"
 import { attached, inline, kind } from "./message-file"
 import { readPartText } from "./message-part-text"
+import { chunkCacheKey, partChunks } from "./message-part-chunk"
 
 async function writeClipboard(text: string): Promise<boolean> {
   const body = typeof document === "undefined" ? undefined : document.body
@@ -276,6 +277,37 @@ function PacedMarkdown(props: { text: string; cacheKey: string; streaming: boole
   )
 }
 
+// UX-002: chunking constants, boundary splitting and the streaming-safe chunk
+// decision live in ./message-part-chunk (pure module, unit-tested separately).
+
+// UX-002 lazy mount: each chunk wrapper carries content-visibility: auto so the
+// browser skips style/layout/paint of off-screen chunks entirely. Chosen over an
+// IntersectionObserver-based deferred mount because it is pure CSS: no observer
+// bookkeeping, no mount/unmount churn fighting with virtua row recycling, and the
+// Markdown parse cache still warms up on first scroll-past.
+const CHUNK_LAZY_STYLE: JSX.CSSProperties = {
+  "content-visibility": "auto",
+  "contain-intrinsic-size": "auto 480px",
+}
+
+// Chunks only exist once the part has completed (chunking is skipped while
+// streaming), so every chunk — including the last one — is rendered once through
+// the shared block cache. The streaming path stays monolithic (PacedMarkdown)
+// until completion, then the part flips to this chunked view in a single swap.
+function ChunkedText(props: { chunks: string[]; cacheKey: string }) {
+  return (
+    <div data-component="chunked-text" data-chunk-count={props.chunks.length}>
+      <For each={props.chunks}>
+        {(chunk, indexAccessor) => (
+          <div data-slot="text-chunk" data-chunk-index={indexAccessor()} style={CHUNK_LAZY_STYLE}>
+            <Markdown text={chunk} cacheKey={chunkCacheKey(props.cacheKey, indexAccessor())} streaming={false} />
+          </div>
+        )}
+      </For>
+    </div>
+  )
+}
+
 function relativizeProjectPath(path: string, directory?: string) {
   if (!path) return ""
   if (!directory) return path
@@ -1301,6 +1333,18 @@ export interface ToolProps {
 
 export type ToolComponent = Component<ToolProps>
 
+// UX-001: when a tool diff is virtualized, give it a bounded, independently scrollable
+// container. file.tsx binds the diff virtualizer to the nearest overflow-y: auto/scroll
+// ancestor (see scrollParent()); without isolation the inner virtualizer would share the
+// session page's outer virtua row-level scroll root, and inner height changes would make
+// the outer virtualizer re-measure repeatedly (jitter). Bounding the height also keeps a
+// huge completed diff from stretching the timeline row indefinitely.
+const VIRTUAL_DIFF_SCROLL_STYLE: JSX.CSSProperties = { "max-height": "480px", "overflow-y": "auto" }
+
+function virtualDiffScrollStyle(enabled: boolean | undefined): JSX.CSSProperties | undefined {
+  return enabled ? VIRTUAL_DIFF_SCROLL_STYLE : undefined
+}
+
 const state: Record<
   string,
   {
@@ -1512,6 +1556,9 @@ PART_MAPPING["text"] = function TextPartDisplay(props) {
     () => props.message.role === "assistant" && typeof (props.message as AssistantMessage).time.completed !== "number",
   )
   const text = () => readPartText(data.store.part_text_accum_delta, part())
+  // UX-002: chunk only after the part stops streaming; split once, at paragraph
+  // boundaries, on completion.
+  const chunks = createMemo(() => partChunks(text(), streaming()))
   const isLastTextPart = createMemo(() => {
     const last = (data.store.part?.[props.message.id] ?? [])
       .filter((item): item is TextPart => item?.type === "text" && !!item.text?.trim())
@@ -1553,8 +1600,13 @@ PART_MAPPING["text"] = function TextPartDisplay(props) {
     <Show when={text()}>
       <div data-component="text-part" data-timeline-part-id={part().id}>
         <div data-slot="text-part-body">
-          <Show when={streaming()} fallback={<Markdown text={text()} cacheKey={part().id} streaming={false} />}>
-            <PacedMarkdown text={text()} cacheKey={part().id} streaming={streaming()} />
+          <Show
+            when={!chunks()}
+            fallback={<ChunkedText chunks={chunks()!} cacheKey={part().id} />}
+          >
+            <Show when={streaming()} fallback={<Markdown text={text()} cacheKey={part().id} streaming={false} />}>
+              <PacedMarkdown text={text()} cacheKey={part().id} streaming={streaming()} />
+            </Show>
           </Show>
         </div>
         <Show when={showCopy()}>
@@ -1605,12 +1657,19 @@ PART_MAPPING["reasoning"] = function ReasoningPartDisplay(props) {
     () => props.message.role === "assistant" && typeof (props.message as AssistantMessage).time.completed !== "number",
   )
   const text = () => readPartText(data.store.part_text_accum_delta, part())
+  // UX-002: see TextPartDisplay — never chunk while streaming.
+  const chunks = createMemo(() => partChunks(text(), streaming()))
 
   return (
     <Show when={text()}>
       <div data-component="reasoning-part" data-timeline-part-id={part().id}>
-        <Show when={streaming()} fallback={<Markdown text={text()} cacheKey={part().id} streaming={false} />}>
-          <PacedMarkdown text={text()} cacheKey={part().id} streaming={streaming()} />
+        <Show
+          when={!chunks()}
+          fallback={<ChunkedText chunks={chunks()!} cacheKey={part().id} />}
+        >
+          <Show when={streaming()} fallback={<Markdown text={text()} cacheKey={part().id} streaming={false} />}>
+            <PacedMarkdown text={text()} cacheKey={part().id} streaming={streaming()} />
+          </Show>
         </Show>
       </div>
     </Show>
@@ -2066,7 +2125,7 @@ ToolRegistry.register({
                 </Show>
               }
             >
-              <div data-component="edit-content">
+              <div data-component="edit-content" style={virtualDiffScrollStyle(props.virtualizeDiff)}>
                 <Dynamic component={fileComponent} mode="diff" virtualize={props.virtualizeDiff} {...fileCompProps()} />
               </div>
             </ToolFileAccordion>
@@ -2247,7 +2306,10 @@ ToolRegistry.register({
                           </StickyAccordionHeader>
                           <Accordion.Content>
                             <Show when={props.deferContent === false || visible()}>
-                              <div data-component="apply-patch-file-diff">
+                              <div
+                                data-component="apply-patch-file-diff"
+                                style={virtualDiffScrollStyle(props.virtualizeDiff)}
+                              >
                                 <Dynamic
                                   component={fileComponent}
                                   mode="diff"
@@ -2323,7 +2385,7 @@ ToolRegistry.register({
                 </Switch>
               }
             >
-              <div data-component="apply-patch-file-diff">
+              <div data-component="apply-patch-file-diff" style={virtualDiffScrollStyle(props.virtualizeDiff)}>
                 <Dynamic
                   component={fileComponent}
                   mode="diff"
diff --git a/packages/web/src/content/docs/ar/github.mdx b/packages/web/src/content/docs/ar/github.mdx
index a0ce1f4a..186d6c63 100644
--- a/packages/web/src/content/docs/ar/github.mdx
+++ b/packages/web/src/content/docs/ar/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 قم بتجاوز الموجه الافتراضي لتخصيص سلوك DeepAgent Code ضمن الـworkflow لديك.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/bs/github.mdx b/packages/web/src/content/docs/bs/github.mdx
index 0601db44..c138beb4 100644
--- a/packages/web/src/content/docs/bs/github.mdx
+++ b/packages/web/src/content/docs/bs/github.mdx
@@ -61,7 +61,7 @@ Ili ga možete postaviti ručno.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -134,7 +134,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -171,7 +171,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -227,7 +227,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -249,7 +249,7 @@ Za `issues` događaje, `prompt` unos je **potreban** jer nema komentara za izvla
 Zaobiđite zadani prompt da biste prilagodili ponašanje DeepAgent Code za vaš tok posla.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/da/github.mdx b/packages/web/src/content/docs/da/github.mdx
index 053bb21f..50ab451d 100644
--- a/packages/web/src/content/docs/da/github.mdx
+++ b/packages/web/src/content/docs/da/github.mdx
@@ -64,7 +64,7 @@ Eller du kan indstille det manuelt.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ For `issues` begivenheder er `prompt` input **påkrævet**, da der ikke er nogen
 Tilsidesæt standardprompten for at tilpasse DeepAgent Codes adfærd til din arbejdsgang.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/de/github.mdx b/packages/web/src/content/docs/de/github.mdx
index ba302b22..36079045 100644
--- a/packages/web/src/content/docs/de/github.mdx
+++ b/packages/web/src/content/docs/de/github.mdx
@@ -64,7 +64,7 @@ Oder Sie können es manuell einrichten.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ Für `issues`-Ereignisse ist die Eingabe `prompt` **erforderlich**, da es keinen
 Überschreiben Sie die Standardaufforderung, um das Verhalten von DeepAgent Code für Ihren Workflow anzupassen.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/es/github.mdx b/packages/web/src/content/docs/es/github.mdx
index e0516979..5f63c6cb 100644
--- a/packages/web/src/content/docs/es/github.mdx
+++ b/packages/web/src/content/docs/es/github.mdx
@@ -64,7 +64,7 @@ O puede configurarlo manualmente.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ Para eventos `issues`, la entrada `prompt` es **obligatoria** ya que no hay ning
 Anule el mensaje predeterminado para personalizar el comportamiento de DeepAgent Code para su flujo de trabajo.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/fr/github.mdx b/packages/web/src/content/docs/fr/github.mdx
index 960fd061..e0e459aa 100644
--- a/packages/web/src/content/docs/fr/github.mdx
+++ b/packages/web/src/content/docs/fr/github.mdx
@@ -64,7 +64,7 @@ Ajoutez le fichier de workflow suivant à `.github/workflows/deepagent-code.yml`
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ Pour les événements `issues`, l'entrée `prompt` est **obligatoire** car il n'
 Remplacez l'invite par défaut pour personnaliser le comportement de DeepAgent Code pour votre workflow.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/github.mdx b/packages/web/src/content/docs/github.mdx
index c5884fc8..088fa4b7 100644
--- a/packages/web/src/content/docs/github.mdx
+++ b/packages/web/src/content/docs/github.mdx
@@ -64,7 +64,7 @@ Or you can set it up manually.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ For `issues` events, the `prompt` input is **required** since there's no comment
 Override the default prompt to customize DeepAgent Code's behavior for your workflow.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/it/github.mdx b/packages/web/src/content/docs/it/github.mdx
index 7fe42131..7653a53c 100644
--- a/packages/web/src/content/docs/it/github.mdx
+++ b/packages/web/src/content/docs/it/github.mdx
@@ -64,7 +64,7 @@ In alternativa, puoi configurarlo manualmente.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ Per gli eventi `issues`, l'input `prompt` e' **obbligatorio** dato che non c'e'
 Sovrascrivi il prompt di default per personalizzare il comportamento di DeepAgent Code nel tuo workflow.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/ja/github.mdx b/packages/web/src/content/docs/ja/github.mdx
index 9d82a9ea..21b98b73 100644
--- a/packages/web/src/content/docs/ja/github.mdx
+++ b/packages/web/src/content/docs/ja/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 デフォルトのプロンプトをオーバーライドして、ワークフローに合わせて DeepAgent Code の動作をカスタマイズします。
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/ko/github.mdx b/packages/web/src/content/docs/ko/github.mdx
index 213aac11..ac0a06ee 100644
--- a/packages/web/src/content/docs/ko/github.mdx
+++ b/packages/web/src/content/docs/ko/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 기본 prompt를 override해 워크플로에 맞게 DeepAgent Code 동작을 커스터마이즈할 수 있습니다.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/nb/github.mdx b/packages/web/src/content/docs/nb/github.mdx
index 1f04f2b1..948cd757 100644
--- a/packages/web/src/content/docs/nb/github.mdx
+++ b/packages/web/src/content/docs/nb/github.mdx
@@ -64,7 +64,7 @@ Eller du kan sette den opp manuelt.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ For `issues`-hendelser er `prompt`-inngangen **påkrevd** siden det ikke er noen
 Overstyr standardprompten for å tilpasse oppførselen til DeepAgent Code for arbeidsflyten din.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/pl/github.mdx b/packages/web/src/content/docs/pl/github.mdx
index 1cebf40e..6cd72170 100644
--- a/packages/web/src/content/docs/pl/github.mdx
+++ b/packages/web/src/content/docs/pl/github.mdx
@@ -64,7 +64,7 @@ Można też uszkodzić to rozwiązanie.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ W przypadku zdarzenia `issues` wprowadzenie `prompt` jest **wymagane**, poniewa
 Zastąp domyślne monit, aby zastosować zachowanie deepagent-code do twojego własnego pracy.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/pt-br/github.mdx b/packages/web/src/content/docs/pt-br/github.mdx
index fb853ed9..6a452ac4 100644
--- a/packages/web/src/content/docs/pt-br/github.mdx
+++ b/packages/web/src/content/docs/pt-br/github.mdx
@@ -64,7 +64,7 @@ Ou você pode configurá-lo manualmente.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
        - name: Run DeepAgent Code
-         uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+         uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
          env:
            ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-       - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+       - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
          env:
            ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-       - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+       - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
          if: steps.check.outputs.result == 'true'
          env:
            ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ Para eventos de `issues`, a entrada `prompt` é **obrigatória** uma vez que nã
 Substitua o prompt padrão para personalizar o comportamento do deepagent-code para seu fluxo de trabalho.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/ru/github.mdx b/packages/web/src/content/docs/ru/github.mdx
index 9938d4be..7b9b961a 100644
--- a/packages/web/src/content/docs/ru/github.mdx
+++ b/packages/web/src/content/docs/ru/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 Переопределите приглашение по умолчанию, чтобы настроить поведение deepagent-code для вашего рабочего процесса.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/th/github.mdx b/packages/web/src/content/docs/th/github.mdx
index 0bb7f707..99c1db68 100644
--- a/packages/web/src/content/docs/th/github.mdx
+++ b/packages/web/src/content/docs/th/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 แทนที่ข้อความแจ้งเริ่มต้นเพื่อปรับแต่งการทำงานของ DeepAgent Code สำหรับเวิร์กโฟลว์ของคุณ
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/tr/github.mdx b/packages/web/src/content/docs/tr/github.mdx
index b147c292..3cb18357 100644
--- a/packages/web/src/content/docs/tr/github.mdx
+++ b/packages/web/src/content/docs/tr/github.mdx
@@ -64,7 +64,7 @@ Veya manuel olarak ayarlayabilirsiniz.
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 deepagent-code'un davranışını iş akışınız için özelleştirmek için varsayılan istemi geçersiz kılın.
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/zh-cn/github.mdx b/packages/web/src/content/docs/zh-cn/github.mdx
index 088de788..3b71e0d8 100644
--- a/packages/web/src/content/docs/zh-cn/github.mdx
+++ b/packages/web/src/content/docs/zh-cn/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 覆盖默认提示词，以便为你的工作流自定义 DeepAgent Code 的行为。
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/packages/web/src/content/docs/zh-tw/github.mdx b/packages/web/src/content/docs/zh-tw/github.mdx
index e860c106..d21cd300 100644
--- a/packages/web/src/content/docs/zh-tw/github.mdx
+++ b/packages/web/src/content/docs/zh-tw/github.mdx
@@ -64,7 +64,7 @@ deepagent-code github install
               persist-credentials: false
 
           - name: Run DeepAgent Code
-            uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+            uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
             env:
              ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
             with:
@@ -140,7 +140,7 @@ jobs:
           persist-credentials: false
 
       - name: Run DeepAgent Code
-        uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+        uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
@@ -177,7 +177,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -233,7 +233,7 @@ jobs:
         with:
           persist-credentials: false
 
-      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+      - uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
         if: steps.check.outputs.result == 'true'
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
@@ -255,7 +255,7 @@ jobs:
 覆寫預設提示詞，以便為您的工作流程自訂 DeepAgent Code 的行為。
 
 ```yaml title=".github/workflows/deepagent-code.yml"
-- uses: deepagent-ltd/deepagent-code/github@github-v1.4.5
+- uses: deepagent-ltd/deepagent-code/github@github-v1.4.7
   with:
     model: anthropic/claude-sonnet-4-5
     prompt: |
diff --git a/release-evidence/README.md b/release-evidence/README.md
new file mode 100644
index 00000000..8ec6d4f3
--- /dev/null
+++ b/release-evidence/README.md
@@ -0,0 +1,77 @@
+# Release Evidence — V4.1 发布证据归档
+
+本目录存放 V4.1 发布门禁（BUG-407-005）的可追溯证据。每个 gate 产出一份**不可变**的
+`manifest.json`，记录 gate 结论、证据条目（类型/文件/SHA-256/结论）与签字占位。
+
+规格来源：[`docs/bug-407-005.md`](../docs/bug-407-005.md) §1 Evidence Manifest 与 §7 Gate State Rules。
+
+## 目录结构
+
+```text
+release-evidence/
+├── README.md                  # 本文件：结构与不可变语义说明
+├── manifest.schema.json       # manifest JSON Schema（draft-07）
+└── v4.1/
+    └── <commit-sha>/          # 证据绑定的完整 git commit SHA
+        └── <gate-id>/
+            ├── manifest.json  # 不可变 gate manifest（由 script/release-evidence.ts 生成）
+            ├── logs/          # 可选：原始测试/命令日志
+            ├── db/            # 可选：数据库快照、migration ledger
+            ├── requests/      # 可选：provider request 哈希与脱敏 payload
+            └── ui/            # 可选：UI capture
+```
+
+- `<commit-sha>`：完整 40 位 git SHA。证据必须绑定到产出它的那个 commit；
+  source/bundle/migration/flags/provider 任一变化都会使相关证据失效（见 §7），
+  新 commit 必须重新跑 gate，不得引用旧 artifact 充数。
+- `<gate-id>`：gate 标识，如 `release-gate-20260819`、`R1-C`、`R2-S3`、`R3-EVT-1000`。
+- 原始日志/产物不在仓库时，manifest 的 evidence 条目可以只有文本结论
+  （`path: null`、`sha256: null`），但结论必须写明事实与来源。
+
+## Manifest 字段（详见 manifest.schema.json）
+
+| 字段 | 说明 |
+|---|---|
+| `schema_version` | 固定 `deepagent.release_evidence.v1` |
+| `version` | 发布线，如 `v4.1` |
+| `gate_id` | gate 名 |
+| `commit` | 证据绑定的完整 commit SHA |
+| `date` | gate 执行日期（YYYY-MM-DD） |
+| `generated_at` | manifest 生成时间（ISO-8601 UTC） |
+| `status` | `passed` / `failed` / `blocked` / `not_run` |
+| `summary` | gate 总体结论 |
+| `evidence[]` | 证据条目：`kind`（类型）、`label`、`path`（文件，可空）、`sha256`（可空）、`conclusion`（结论） |
+| `signatures[]` | 签字占位：`role` / `actor` / `at`；签字链要求 domain owner 与 release owner 各自签字 |
+
+证据条目 `kind` 分类对应 BUG-407-005 的证据层级：
+`test-summary`（R1 确定性测试）、`migration`（M1-M4）、`smoke` / `live`（R2 live）、
+`capacity`（R3 容量）、`log` / `db` / `request` / `ui` / `receipt` / `metric`（原始 artifact）。
+
+## 不可变语义
+
+1. **manifest 一旦生成不得修改**。`script/release-evidence.ts` 不提供覆盖写：
+   目标 `manifest.json` 已存在时重复生成直接报错退出。
+2. 修订、重试或结论变化 → 使用新的 gate attempt（新的 `<gate-id>`，
+   如 `release-gate-20260819-attempt2`）生成新 manifest，不覆盖旧证据。
+3. `--check` 校验 manifest 中记录的文件 SHA-256 未被篡改；任何哈希不一致即为篡改，判为失败。
+4. secret、完整敏感 prompt 与 provider credential 不进入 manifest；
+   request artifact 使用 canonical hash + 脱敏结构化 payload。
+
+## 工具用法
+
+```bash
+# 生成 gate manifest（重复生成会报错，不覆盖）
+bun script/release-evidence.ts archive \
+  --gate release-gate-20260819 \
+  --date 2026-08-19 \
+  --status passed \
+  --summary "总体结论" \
+  --evidence "test-summary:full-suite" \
+  --conclusion "full-suite=4967 pass / 0 fail" \
+  --evidence "log:run-log:packages/core/run.log" \
+  --sign "domain-owner=<name>" --sign "release-owner=<name>"
+
+# 校验已有 manifest 的文件哈希未被篡改
+bun script/release-evidence.ts check --gate release-gate-20260819
+bun script/release-evidence.ts check release-evidence/v4.1/<commit>/<gate>/manifest.json
+```
diff --git a/release-evidence/manifest.schema.json b/release-evidence/manifest.schema.json
new file mode 100644
index 00000000..4d773269
--- /dev/null
+++ b/release-evidence/manifest.schema.json
@@ -0,0 +1,115 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "deepagent.release_evidence.v1",
+  "title": "Release Evidence Gate Manifest",
+  "description": "Immutable release-gate evidence manifest (BUG-407-005). Generated by script/release-evidence.ts; never overwrite an existing manifest — create a new gate attempt instead.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["schema_version", "version", "gate_id", "commit", "date", "generated_at", "status", "evidence", "signatures"],
+  "properties": {
+    "schema_version": {
+      "const": "deepagent.release_evidence.v1"
+    },
+    "version": {
+      "type": "string",
+      "description": "Release line, e.g. v4.1",
+      "pattern": "^v[0-9]+\\.[0-9]+$"
+    },
+    "gate_id": {
+      "type": "string",
+      "description": "Gate identifier, e.g. release-gate-20260819, R1-C, R2-S3",
+      "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]*$"
+    },
+    "commit": {
+      "type": "string",
+      "description": "Full 40-char git SHA the evidence is bound to",
+      "pattern": "^[0-9a-f]{40}$"
+    },
+    "date": {
+      "type": "string",
+      "description": "Gate execution date (UTC)",
+      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$"
+    },
+    "generated_at": {
+      "type": "string",
+      "description": "Manifest generation timestamp, ISO-8601 UTC"
+    },
+    "status": {
+      "type": "string",
+      "enum": ["passed", "failed", "blocked", "not_run"]
+    },
+    "summary": {
+      "type": "string",
+      "description": "Overall gate conclusion"
+    },
+    "evidence": {
+      "type": "array",
+      "description": "Evidence entries; order is part of the immutable record",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["kind", "label", "conclusion"],
+        "properties": {
+          "kind": {
+            "type": "string",
+            "description": "Evidence category aligned with BUG-407-005 R1/R2/R3/M1-M4 classification",
+            "enum": [
+              "test-summary",
+              "migration",
+              "smoke",
+              "live",
+              "capacity",
+              "log",
+              "db",
+              "request",
+              "ui",
+              "receipt",
+              "metric"
+            ]
+          },
+          "label": {
+            "type": "string",
+            "description": "Unique identifier of this entry within the gate",
+            "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]*$"
+          },
+          "path": {
+            "type": ["string", "null"],
+            "description": "Repo-relative path of the evidence file; null when the original artifact is not kept in the repo"
+          },
+          "sha256": {
+            "type": ["string", "null"],
+            "description": "SHA-256 hex digest of the file at path; null together with path",
+            "pattern": "^[0-9a-f]{64}$"
+          },
+          "conclusion": {
+            "type": "string",
+            "description": "Recorded conclusion, facts and source for this entry"
+          }
+        }
+      }
+    },
+    "signatures": {
+      "type": "array",
+      "description": "Sign-off chain placeholders: each domain owner plus the release owner must sign before the gate closes",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["role", "actor", "at"],
+        "properties": {
+          "role": {
+            "type": "string",
+            "description": "e.g. domain-owner, release-owner"
+          },
+          "actor": {
+            "type": "string",
+            "description": "Signer identity; empty string until signed"
+          },
+          "at": {
+            "type": "string",
+            "description": "Signing timestamp, ISO-8601 UTC; empty string until signed"
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/release-evidence/v4.1/6fa05579a27d7db372da502d112efaab23353d15/release-gate-20260819/manifest.json b/release-evidence/v4.1/6fa05579a27d7db372da502d112efaab23353d15/release-gate-20260819/manifest.json
new file mode 100644
index 00000000..8a16c974
--- /dev/null
+++ b/release-evidence/v4.1/6fa05579a27d7db372da502d112efaab23353d15/release-gate-20260819/manifest.json
@@ -0,0 +1,52 @@
+{
+  "schema_version": "deepagent.release_evidence.v1",
+  "version": "v4.1",
+  "gate_id": "release-gate-20260819",
+  "commit": "6fa05579a27d7db372da502d112efaab23353d15",
+  "date": "2026-08-19",
+  "generated_at": "2026-08-19T17:25:23Z",
+  "status": "passed",
+  "summary": "2026-08-19 发布门禁回填归档:全量确定性测试、migration 双路径、DeepSeek live 冒烟全部通过。原始日志未入仓库,本 manifest 以文本记录事实与来源;commit 绑定为归档时分支 HEAD,正式发布前须按 BUG-407-005 重新绑定发布 commit。",
+  "evidence": [
+    {
+      "kind": "test-summary",
+      "label": "full-suite-deterministic",
+      "path": null,
+      "sha256": null,
+      "conclusion": "全量确定性测试:4967 pass / 0 fail / 5006 tests。来源:2026-08-19 发布门禁执行摘要(原始日志未入仓库)。"
+    },
+    {
+      "kind": "migration",
+      "label": "dual-path-prod-replica",
+      "path": null,
+      "sha256": null,
+      "conclusion": "migration 双路径验证:在生产库副本上成功回放 143 个 migrations,新库/旧库两条路径均通过。来源:2026-08-19 发布门禁 migration 执行记录(原始日志未入仓库)。"
+    },
+    {
+      "kind": "smoke",
+      "label": "deepseek-live-cli-headless",
+      "path": null,
+      "sha256": null,
+      "conclusion": "DeepSeek live 冒烟:cli-headless 路径通过。来源:2026-08-19 发布门禁 live 冒烟记录(原始日志未入仓库)。"
+    },
+    {
+      "kind": "smoke",
+      "label": "deepseek-live-structured-legacy",
+      "path": null,
+      "sha256": null,
+      "conclusion": "DeepSeek live 冒烟:structured-legacy 路径通过。来源:2026-08-19 发布门禁 live 冒烟记录(原始日志未入仓库)。"
+    }
+  ],
+  "signatures": [
+    {
+      "role": "domain-owner",
+      "actor": "",
+      "at": ""
+    },
+    {
+      "role": "release-owner",
+      "actor": "",
+      "at": ""
+    }
+  ]
+}
diff --git a/release-evidence/v4.1/9bad421e500b20cf6948e3b250203722afafbdb0/release-gate-20260820/manifest.json b/release-evidence/v4.1/9bad421e500b20cf6948e3b250203722afafbdb0/release-gate-20260820/manifest.json
new file mode 100644
index 00000000..213cd143
--- /dev/null
+++ b/release-evidence/v4.1/9bad421e500b20cf6948e3b250203722afafbdb0/release-gate-20260820/manifest.json
@@ -0,0 +1,51 @@
+{
+  "schema_version": "deepagent.release_evidence.v1",
+  "version": "v4.1",
+  "gate_id": "release-gate-20260820",
+  "commit": "9bad421e500b20cf6948e3b250203722afafbdb0",
+  "date": "2026-08-20",
+  "generated_at": "2026-08-20T01:01:09Z",
+  "status": "passed",
+  "evidence": [
+    {
+      "kind": "test-summary",
+      "label": "full-suite-deterministic",
+      "path": null,
+      "sha256": null,
+      "conclusion": "5001 pass / 38 skip / 1 todo / 0 fail (5040 tests / 468 files, durable 默认模式;含 BUG-407-012 A/B/C、UPD-005 Gap1/2、RISK-003 代码项、release-evidence 基建全部批次)"
+    },
+    {
+      "kind": "migration",
+      "label": "dual-path-prod-replica",
+      "path": null,
+      "sha256": null,
+      "conclusion": "生产库副本回放 143+2 migrations(20260820 两个新 migration 含),新/旧库双路径通过;schema --check 无 drift"
+    },
+    {
+      "kind": "smoke",
+      "label": "deepseek-live-cli-headless",
+      "path": null,
+      "sha256": null,
+      "conclusion": "通过(9 JSON events)"
+    },
+    {
+      "kind": "smoke",
+      "label": "deepseek-live-structured-legacy",
+      "path": null,
+      "sha256": null,
+      "conclusion": "通过(16733 tokens)"
+    }
+  ],
+  "signatures": [
+    {
+      "role": "domain-owner",
+      "actor": "",
+      "at": ""
+    },
+    {
+      "role": "release-owner",
+      "actor": "",
+      "at": ""
+    }
+  ]
+}
diff --git a/script/check-test-fixtures.ts b/script/check-test-fixtures.ts
new file mode 100644
index 00000000..6d0aa86b
--- /dev/null
+++ b/script/check-test-fixtures.ts
@@ -0,0 +1,167 @@
+#!/usr/bin/env bun
+/**
+ * QUAL-003 gate: forbid test fixtures from bypassing the durable session state machine.
+ *
+ * Tests must drive authority tables through the lifecycle helpers
+ * (admission -> preparing -> prepared -> dispatching -> terminal). Direct
+ * `db.insert(...)` calls against the authority tables below bypass the state
+ * machine and cascade-break fixtures whenever the schema tightens.
+ *
+ * oxlint has no call-combination rule for this, so this grep-style CI gate
+ * scans test sources under every package (`packages/<pkg>/test`, ts and tsx)
+ * and fails on every direct insert.
+ *
+ * Exemptions: a line ending with `// fixture-exempt: <reason>` is skipped.
+ * Only legacy crash-recovery fixtures that intentionally seed abnormal states
+ * may carry an exemption; new tests must use lifecycle helpers instead.
+ *
+ * Usage:
+ *   bun script/check-test-fixtures.ts              # fail on any non-exempt hit
+ *   bun script/check-test-fixtures.ts --baseline N # pass while hits <= N (ratchet mode)
+ */
+
+import * as fs from "node:fs"
+import * as path from "node:path"
+
+const AUTHORITY_TABLES = [
+  "SessionActivityTable",
+  "SessionProviderAttemptTable",
+  "SessionToolRequestReceiptTable",
+  "SessionActivityAdmissionTable",
+] as const
+
+/**
+ * Ratchet baseline for legacy bypassing fixtures. The current legacy inventory
+ * is fully annotated with `// fixture-exempt:` comments, so the strict mode
+ * baseline is zero. If the inventory ever grows unmanageably large, bump this
+ * and run with --baseline to switch to report-only-for-new-violations mode.
+ */
+const DEFAULT_BASELINE = 0
+
+const EXEMPTION_PATTERN = /\/\/\s*fixture-exempt:\s*\S/
+const INSERT_PATTERN = new RegExp(String.raw`\.insert\s*\(\s*(${AUTHORITY_TABLES.join("|")})\b`, "g")
+
+interface Violation {
+  readonly file: string
+  readonly line: number
+  readonly table: string
+}
+
+function* walkTestFiles(root: string): Generator<string> {
+  let entries: fs.Dirent[]
+  try {
+    entries = fs.readdirSync(root, { withFileTypes: true })
+  } catch {
+    return
+  }
+  for (const entry of entries) {
+    const full = path.join(root, entry.name)
+    if (entry.isDirectory()) {
+      if (entry.name === "node_modules" || entry.name === ".artifacts") continue
+      yield* walkTestFiles(full)
+    } else if (entry.isFile() && /\.(ts|tsx)$/.test(entry.name)) {
+      yield full
+    }
+  }
+}
+
+function lineOfIndex(content: string, index: number): number {
+  let line = 1
+  for (let i = 0; i < index && i < content.length; i += 1) {
+    if (content.charCodeAt(i) === 10) line += 1
+  }
+  return line
+}
+
+function lineText(content: string, line: number): string {
+  return content.split("\n")[line - 1] ?? ""
+}
+
+function scan(root: string): Violation[] {
+  const violations: Violation[] = []
+  const packagesDir = path.join(root, "packages")
+  let packages: string[] = []
+  try {
+    packages = fs
+      .readdirSync(packagesDir, { withFileTypes: true })
+      .filter((entry) => entry.isDirectory())
+      .map((entry) => path.join(packagesDir, entry.name, "test"))
+  } catch {
+    packages = []
+  }
+  for (const testDir of packages) {
+    for (const file of walkTestFiles(testDir)) {
+      const content = fs.readFileSync(file, "utf8")
+      for (const match of content.matchAll(INSERT_PATTERN)) {
+        const line = lineOfIndex(content, match.index ?? 0)
+        const table = match[1] ?? "unknown"
+        if (EXEMPTION_PATTERN.test(lineText(content, line))) continue
+        violations.push({
+          file: path.relative(root, file),
+          line,
+          table,
+        })
+      }
+    }
+  }
+  return violations.sort((a, b) => (a.file === b.file ? a.line - b.line : a.file.localeCompare(b.file)))
+}
+
+function main(): void {
+  const repoRoot = path.resolve(import.meta.dir, "..")
+  const args = process.argv.slice(2)
+  let baseline: number | null = null
+  for (let i = 0; i < args.length; i += 1) {
+    if (args[i] === "--baseline") {
+      const raw = args[i + 1]
+      const parsed = raw === undefined ? Number.NaN : Number.parseInt(raw, 10)
+      if (Number.isNaN(parsed) || parsed < 0) {
+        console.error(`check-test-fixtures: invalid --baseline value: ${raw ?? "<missing>"}`)
+        process.exit(2)
+      }
+      baseline = parsed
+      i += 1
+    } else {
+      console.error(`check-test-fixtures: unknown argument: ${args[i]}`)
+      process.exit(2)
+    }
+  }
+  const effectiveBaseline = baseline ?? DEFAULT_BASELINE
+
+  const violations = scan(repoRoot)
+  console.log(
+    `check-test-fixtures: scanned packages/*/test/**/*.{ts,tsx} for direct inserts into ${AUTHORITY_TABLES.join(", ")}`,
+  )
+
+  if (violations.length === 0) {
+    console.log("check-test-fixtures: no non-exempt fixture bypasses found")
+    return
+  }
+
+  for (const violation of violations) {
+    console.log(
+      `${violation.file}:${violation.line}: direct .insert(${violation.table}) bypasses the durable state machine`,
+    )
+  }
+
+  if (baseline !== null && violations.length <= effectiveBaseline) {
+    console.log(
+      `check-test-fixtures: ${violations.length} hit(s) within baseline ${effectiveBaseline}; ratchet down over time`,
+    )
+    return
+  }
+
+  console.error(
+    [
+      "",
+      `check-test-fixtures: ${violations.length} violation(s). Test fixtures must not insert`,
+      "authority rows directly; drive them through the durable lifecycle helpers",
+      "(admission -> preparing -> prepared -> dispatching -> terminal).",
+      "Legacy crash-recovery fixtures may be annotated with a trailing",
+      "`// fixture-exempt: <reason>` comment on the matched line.",
+    ].join("\n"),
+  )
+  process.exit(1)
+}
+
+main()
diff --git a/script/live-llm-key-from-auth.ts b/script/live-llm-key-from-auth.ts
new file mode 100644
index 00000000..497a7aa5
--- /dev/null
+++ b/script/live-llm-key-from-auth.ts
@@ -0,0 +1,33 @@
+#!/usr/bin/env bun
+// REL gate helper: extract a provider API key from the local deepagent-code auth.json into a
+// permission-restricted key file consumable by the live-LLM harness
+// (DEEPAGENT_CODE_LIVE_LLM_API_KEY_FILE). NEVER prints key material — only paths and byte counts.
+//
+// Usage: bun script/live-llm-key-from-auth.ts [provider]   (default: deepseek)
+import { chmod, mkdir } from "node:fs/promises"
+import os from "node:os"
+import path from "node:path"
+
+const provider = process.argv[2] ?? "deepseek"
+const authPath = path.join(os.homedir(), ".deepagent", "code", "auth.json")
+
+const auth = (await Bun.file(authPath)
+  .json()
+  .catch(() => undefined)) as Record<string, { key?: string }> | undefined
+if (!auth) {
+  console.error(`unable to read ${authPath}`)
+  process.exit(1)
+}
+const entry = auth[provider]
+if (!entry?.key || typeof entry.key !== "string" || entry.key.length === 0) {
+  console.error(`no key for provider "${provider}" in ${authPath} (available: ${Object.keys(auth).join(", ")})`)
+  process.exit(1)
+}
+
+const outDir = path.join(os.homedir(), ".deepagent", "code", "tmp")
+await mkdir(outDir, { recursive: true })
+const outFile = path.join(outDir, `live-llm-${provider}.key`)
+await Bun.write(outFile, `${entry.key.trim()}\n`)
+await chmod(outFile, 0o600)
+console.log(`wrote ${outFile} (bytes=${entry.key.trim().length}, mode=600)`)
+console.log(`export DEEPAGENT_CODE_LIVE_LLM_API_KEY_FILE="${outFile}"`)
diff --git a/script/release-evidence.ts b/script/release-evidence.ts
new file mode 100644
index 00000000..92082510
--- /dev/null
+++ b/script/release-evidence.ts
@@ -0,0 +1,534 @@
+#!/usr/bin/env bun
+/**
+ * BUG-407-005 release-evidence tooling: archive immutable gate manifests and
+ * verify them against tampering.
+ *
+ * Layout (see release-evidence/README.md):
+ *   release-evidence/<version>/<commit>/<gate-id>/manifest.json
+ *
+ * Manifests are immutable. This tool never overwrites an existing manifest:
+ * re-running archive for the same version/commit/gate fails. Corrections or
+ * retries must create a new gate attempt (a new gate id) instead.
+ *
+ * Usage:
+ *   # Generate a gate manifest (fails if it already exists)
+ *   bun script/release-evidence.ts archive \
+ *     --gate release-gate-20260819 \
+ *     [--commit <sha>]            # default: git rev-parse HEAD
+ *     [--version v4.1]            # release line, default v4.1
+ *     [--date YYYY-MM-DD]         # gate date, default today (UTC)
+ *     [--status passed]           # passed|failed|blocked|not_run
+ *     [--summary "<text>"] \
+ *     [--evidence <kind>:<label>[:<path>]]...   # repeatable
+ *     [--conclusion <label>=<text>]...          # repeatable
+ *     [--sign <role>=<actor>]...                # repeatable
+ *     [--root <dir>]              # repo root, default: this script's parent
+ *
+ *   # Verify an existing manifest: file hashes match, nothing tampered
+ *   bun script/release-evidence.ts check --gate <gate-id> [--commit <sha>] [--version v4.1] [--root <dir>]
+ *   bun script/release-evidence.ts check <path/to/manifest.json>
+ */
+
+import { createHash } from "node:crypto"
+import * as fs from "node:fs"
+import * as path from "node:path"
+
+export const RELEASE_EVIDENCE_SCHEMA_VERSION = "deepagent.release_evidence.v1"
+export const EVIDENCE_DIRNAME = "release-evidence"
+export const MANIFEST_FILENAME = "manifest.json"
+
+export const EVIDENCE_KINDS = [
+  "test-summary",
+  "migration",
+  "smoke",
+  "live",
+  "capacity",
+  "log",
+  "db",
+  "request",
+  "ui",
+  "receipt",
+  "metric",
+] as const
+export type EvidenceKind = (typeof EVIDENCE_KINDS)[number]
+
+export const GATE_STATUSES = ["passed", "failed", "blocked", "not_run"] as const
+export type GateStatus = (typeof GATE_STATUSES)[number]
+
+export interface EvidenceEntry {
+  readonly kind: EvidenceKind
+  readonly label: string
+  readonly path: string | null
+  readonly sha256: string | null
+  readonly conclusion: string
+}
+
+export interface SignatureEntry {
+  readonly role: string
+  readonly actor: string
+  readonly at: string
+}
+
+export interface ReleaseEvidenceManifest {
+  readonly schema_version: typeof RELEASE_EVIDENCE_SCHEMA_VERSION
+  readonly version: string
+  readonly gate_id: string
+  readonly commit: string
+  readonly date: string
+  readonly generated_at: string
+  readonly status: GateStatus
+  readonly summary?: string
+  readonly evidence: readonly EvidenceEntry[]
+  readonly signatures: readonly SignatureEntry[]
+}
+
+export interface ArchiveOptions {
+  readonly root: string
+  readonly version: string
+  readonly gateID: string
+  readonly commit: string
+  readonly date: string
+  readonly generatedAt: string
+  readonly status: GateStatus
+  readonly summary?: string
+  readonly evidence: readonly EvidenceEntry[]
+  readonly signatures: readonly SignatureEntry[]
+}
+
+export interface CheckResult {
+  readonly ok: boolean
+  readonly manifestPath: string
+  readonly failures: readonly string[]
+}
+
+const GATE_ID_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]*$/
+const LABEL_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]*$/
+const COMMIT_PATTERN = /^[0-9a-f]{40}$/
+const VERSION_PATTERN = /^v[0-9]+\.[0-9]+$/
+const DATE_PATTERN = /^[0-9]{4}-[0-9]{2}-[0-9]{2}$/
+const SHA256_PATTERN = /^[0-9a-f]{64}$/
+
+export class ReleaseEvidenceError extends Error {}
+
+export function sha256Hex(buffer: Uint8Array | string): string {
+  return createHash("sha256").update(buffer).digest("hex")
+}
+
+export function sha256OfFile(filePath: string): string {
+  return sha256Hex(fs.readFileSync(filePath))
+}
+
+export function manifestPathFor(root: string, version: string, commit: string, gateID: string): string {
+  return path.join(root, EVIDENCE_DIRNAME, version, commit, gateID, MANIFEST_FILENAME)
+}
+
+/** Deterministic serialization: fixed key order, 2-space indent, trailing newline. */
+export function serializeManifest(manifest: ReleaseEvidenceManifest): string {
+  const body: Record<string, unknown> = {
+    schema_version: manifest.schema_version,
+    version: manifest.version,
+    gate_id: manifest.gate_id,
+    commit: manifest.commit,
+    date: manifest.date,
+    generated_at: manifest.generated_at,
+    status: manifest.status,
+  }
+  if (manifest.summary !== undefined) body.summary = manifest.summary
+  body.evidence = manifest.evidence.map((entry) => ({
+    kind: entry.kind,
+    label: entry.label,
+    path: entry.path,
+    sha256: entry.sha256,
+    conclusion: entry.conclusion,
+  }))
+  body.signatures = manifest.signatures.map((signature) => ({
+    role: signature.role,
+    actor: signature.actor,
+    at: signature.at,
+  }))
+  return `${JSON.stringify(body, null, 2)}\n`
+}
+
+export function buildManifest(options: ArchiveOptions): ReleaseEvidenceManifest {
+  return {
+    schema_version: RELEASE_EVIDENCE_SCHEMA_VERSION,
+    version: options.version,
+    gate_id: options.gateID,
+    commit: options.commit,
+    date: options.date,
+    generated_at: options.generatedAt,
+    status: options.status,
+    summary: options.summary,
+    evidence: options.evidence,
+    signatures: options.signatures,
+  }
+}
+
+/**
+ * Write the gate manifest. Fails when the target already exists — manifests
+ * are immutable and the tool offers no overwrite path.
+ */
+export function archiveGate(options: ArchiveOptions): string {
+  validateArchiveOptions(options)
+  const target = manifestPathFor(options.root, options.version, options.commit, options.gateID)
+  if (fs.existsSync(target)) {
+    throw new ReleaseEvidenceError(
+      [
+        `manifest already exists at ${path.relative(options.root, target)}`,
+        "release-evidence manifests are immutable: no overwrite is offered.",
+        "Record corrections or retries as a new gate attempt (new gate id).",
+      ].join("\n"),
+    )
+  }
+  const manifest = buildManifest(options)
+  fs.mkdirSync(path.dirname(target), { recursive: true })
+  fs.writeFileSync(target, serializeManifest(manifest), { flag: "wx" })
+  return target
+}
+
+/** Verify every file-backed evidence entry still matches its recorded SHA-256. */
+export function checkManifest(manifestPath: string): CheckResult {
+  const failures: string[] = []
+  if (!fs.existsSync(manifestPath)) {
+    return { ok: false, manifestPath, failures: [`manifest not found: ${manifestPath}`] }
+  }
+  const root = resolveEvidenceRoot(path.dirname(manifestPath))
+  let parsed: unknown
+  try {
+    parsed = JSON.parse(fs.readFileSync(manifestPath, "utf8"))
+  } catch (error) {
+    return { ok: false, manifestPath, failures: [`manifest is not valid JSON: ${String(error)}`] }
+  }
+  if (!isRecord(parsed)) return { ok: false, manifestPath, failures: ["manifest root must be a JSON object"] }
+
+  if (parsed.schema_version !== RELEASE_EVIDENCE_SCHEMA_VERSION) {
+    failures.push(`unexpected schema_version: ${String(parsed.schema_version)}`)
+  }
+  for (const field of ["gate_id", "commit", "date", "status"] as const) {
+    if (typeof parsed[field] !== "string" || parsed[field] === "") failures.push(`missing or empty field: ${field}`)
+  }
+  if (!Array.isArray(parsed.evidence)) {
+    failures.push("missing evidence array")
+    return { ok: false, manifestPath, failures }
+  }
+
+  const seenLabels = new Set<string>()
+  for (const [index, raw] of parsed.evidence.entries()) {
+    const where = `evidence[${index}]`
+    if (!isRecord(raw)) {
+      failures.push(`${where}: entry must be an object`)
+      continue
+    }
+    const label = typeof raw.label === "string" ? raw.label : ""
+    if (label === "") failures.push(`${where}: missing label`)
+    else if (seenLabels.has(label)) failures.push(`${where}: duplicate label ${label}`)
+    seenLabels.add(label)
+    if (typeof raw.conclusion !== "string" || raw.conclusion === "") failures.push(`${where}: missing conclusion`)
+
+    const entryPath = raw.path ?? null
+    const recorded = raw.sha256 ?? null
+    if ((entryPath === null) !== (recorded === null)) {
+      failures.push(`${where}: path and sha256 must both be present or both be null`)
+      continue
+    }
+    if (entryPath === null) continue
+    if (typeof entryPath !== "string" || typeof recorded !== "string" || !SHA256_PATTERN.test(recorded)) {
+      failures.push(`${where}: malformed path or sha256`)
+      continue
+    }
+    const absolute = path.isAbsolute(entryPath) ? entryPath : path.join(root, entryPath)
+    if (!fs.existsSync(absolute)) {
+      failures.push(`${where} (${label || "?"}): file missing: ${entryPath}`)
+      continue
+    }
+    const actual = sha256OfFile(absolute)
+    if (actual !== recorded) {
+      failures.push(`${where} (${label || "?"}): sha256 mismatch for ${entryPath}: recorded ${recorded}, actual ${actual}`)
+    }
+  }
+
+  return { ok: failures.length === 0, manifestPath, failures }
+}
+
+/**
+ * Locate gate manifests for a gate id. With a commit, the path is exact;
+ * without one, every commit directory under the version line is searched.
+ */
+export function findManifestPaths(root: string, version: string, gateID: string, commit?: string): string[] {
+  if (commit !== undefined) {
+    const candidate = manifestPathFor(root, version, commit, gateID)
+    return fs.existsSync(candidate) ? [candidate] : []
+  }
+  const versionDir = path.join(root, EVIDENCE_DIRNAME, version)
+  let commits: string[] = []
+  try {
+    commits = fs
+      .readdirSync(versionDir, { withFileTypes: true })
+      .filter((entry) => entry.isDirectory())
+      .map((entry) => entry.name)
+  } catch {
+    return []
+  }
+  const found: string[] = []
+  for (const commitDir of commits.sort()) {
+    const candidate = path.join(versionDir, commitDir, gateID, MANIFEST_FILENAME)
+    if (fs.existsSync(candidate)) found.push(candidate)
+  }
+  return found
+}
+
+export function resolveEvidenceRoot(startDir: string): string {
+  let dir = path.resolve(startDir)
+  for (;;) {
+    if (fs.existsSync(path.join(dir, EVIDENCE_DIRNAME))) return dir
+    const parent = path.dirname(dir)
+    if (parent === dir) return path.resolve(startDir)
+    dir = parent
+  }
+}
+
+function validateArchiveOptions(options: ArchiveOptions): void {
+  if (!VERSION_PATTERN.test(options.version)) throw new ReleaseEvidenceError(`invalid --version: ${options.version}`)
+  if (!GATE_ID_PATTERN.test(options.gateID)) throw new ReleaseEvidenceError(`invalid --gate: ${options.gateID}`)
+  if (!COMMIT_PATTERN.test(options.commit)) {
+    throw new ReleaseEvidenceError(`invalid --commit (need full 40-char lowercase sha): ${options.commit}`)
+  }
+  if (!DATE_PATTERN.test(options.date)) throw new ReleaseEvidenceError(`invalid --date: ${options.date}`)
+  if (!GATE_STATUSES.includes(options.status)) throw new ReleaseEvidenceError(`invalid --status: ${options.status}`)
+  const labels = new Set<string>()
+  for (const entry of options.evidence) {
+    if (!EVIDENCE_KINDS.includes(entry.kind)) throw new ReleaseEvidenceError(`invalid evidence kind: ${entry.kind}`)
+    if (!LABEL_PATTERN.test(entry.label)) throw new ReleaseEvidenceError(`invalid evidence label: ${entry.label}`)
+    if (labels.has(entry.label)) throw new ReleaseEvidenceError(`duplicate evidence label: ${entry.label}`)
+    labels.add(entry.label)
+    if (entry.conclusion === "") throw new ReleaseEvidenceError(`evidence ${entry.label}: conclusion is required`)
+    if ((entry.path === null) !== (entry.sha256 === null)) {
+      throw new ReleaseEvidenceError(`evidence ${entry.label}: path and sha256 must both be present or both be null`)
+    }
+  }
+}
+
+interface CliOptions {
+  root: string
+  version: string
+  gateID?: string
+  commit?: string
+  date?: string
+  status: GateStatus
+  summary?: string
+  generatedAtForTest?: string
+  evidenceSpecs: string[]
+  conclusions: Map<string, string>
+  signs: SignatureEntry[]
+}
+
+function parseCliArgs(argv: string[]): { command: "archive" | "check"; positional: string[]; options: CliOptions } {
+  const [command, ...rest] = argv
+  if (command !== "archive" && command !== "check") {
+    throw new ReleaseEvidenceError(`unknown command: ${command ?? "<missing>"} (expected archive or check)`)
+  }
+  const options: CliOptions = {
+    root: path.resolve(import.meta.dir, ".."),
+    version: "v4.1",
+    status: "passed",
+    evidenceSpecs: [],
+    conclusions: new Map(),
+    signs: [],
+  }
+  const positional: string[] = []
+  for (let i = 0; i < rest.length; i += 1) {
+    const arg = rest[i]!
+    const value = () => {
+      const next = rest[i + 1]
+      if (next === undefined) throw new ReleaseEvidenceError(`missing value for ${arg}`)
+      i += 1
+      return next
+    }
+    switch (arg) {
+      case "--root":
+        options.root = path.resolve(value())
+        break
+      case "--version":
+        options.version = value()
+        break
+      case "--gate":
+        options.gateID = value()
+        break
+      case "--commit":
+        options.commit = value()
+        break
+      case "--date":
+        options.date = value()
+        break
+      case "--status": {
+        const raw = value()
+        if (!GATE_STATUSES.includes(raw as GateStatus)) throw new ReleaseEvidenceError(`invalid --status: ${raw}`)
+        options.status = raw as GateStatus
+        break
+      }
+      case "--summary":
+        options.summary = value()
+        break
+      case "--generated-at":
+        options.generatedAtForTest = value()
+        break
+      case "--evidence":
+        options.evidenceSpecs.push(value())
+        break
+      case "--conclusion": {
+        const raw = value()
+        const separator = raw.indexOf("=")
+        if (separator <= 0) throw new ReleaseEvidenceError(`--conclusion expects <label>=<text>: ${raw}`)
+        options.conclusions.set(raw.slice(0, separator), raw.slice(separator + 1))
+        break
+      }
+      case "--sign": {
+        const raw = value()
+        const separator = raw.indexOf("=")
+        if (separator <= 0) throw new ReleaseEvidenceError(`--sign expects <role>=<actor>: ${raw}`)
+        options.signs.push({ role: raw.slice(0, separator), actor: raw.slice(separator + 1), at: "" })
+        break
+      }
+      default:
+        if (arg.startsWith("-")) throw new ReleaseEvidenceError(`unknown argument: ${arg}`)
+        positional.push(arg)
+    }
+  }
+  return { command, positional, options }
+}
+
+/** Parse `<kind>:<label>[:<path>]` into an evidence entry, hashing the file when present. */
+export function parseEvidenceSpec(spec: string, root: string, conclusion: string): EvidenceEntry {
+  const first = spec.indexOf(":")
+  if (first <= 0) throw new ReleaseEvidenceError(`--evidence expects <kind>:<label>[:<path>]: ${spec}`)
+  const kind = spec.slice(0, first)
+  const remainder = spec.slice(first + 1)
+  const second = remainder.indexOf(":")
+  const label = second === -1 ? remainder : remainder.slice(0, second)
+  const filePath = second === -1 ? undefined : remainder.slice(second + 1)
+  if (!EVIDENCE_KINDS.includes(kind as EvidenceKind)) {
+    throw new ReleaseEvidenceError(`unknown evidence kind: ${kind} (expected one of ${EVIDENCE_KINDS.join(", ")})`)
+  }
+  if (!LABEL_PATTERN.test(label)) throw new ReleaseEvidenceError(`invalid evidence label: ${label}`)
+  if (filePath === undefined || filePath === "") {
+    return { kind: kind as EvidenceKind, label, path: null, sha256: null, conclusion }
+  }
+  const absolute = path.resolve(root, filePath)
+  if (!fs.existsSync(absolute)) throw new ReleaseEvidenceError(`evidence file not found: ${filePath}`)
+  const display = absolute.startsWith(`${root}${path.sep}`) ? path.relative(root, absolute) : absolute
+  return { kind: kind as EvidenceKind, label, path: display, sha256: sha256OfFile(absolute), conclusion }
+}
+
+function gitHead(root: string): string {
+  const result = Bun.spawnSync(["git", "rev-parse", "HEAD"], { cwd: root })
+  if (result.exitCode !== 0) {
+    throw new ReleaseEvidenceError(
+      `cannot resolve git HEAD in ${root}; pass --commit explicitly\n${result.stderr.toString().trim()}`,
+    )
+  }
+  return result.stdout.toString().trim()
+}
+
+function requireGateID(options: CliOptions): string {
+  if (options.gateID === undefined) throw new ReleaseEvidenceError("--gate is required")
+  return options.gateID
+}
+
+async function runArchive(options: CliOptions): Promise<void> {
+  const gateID = requireGateID(options)
+  const commit = options.commit ?? gitHead(options.root)
+  const now = new Date()
+  const evidence = options.evidenceSpecs.map((spec) => {
+    const entry = parseEvidenceSpec(spec, options.root, "")
+    const conclusion = options.conclusions.get(entry.label)
+    if (conclusion === undefined) {
+      throw new ReleaseEvidenceError(`evidence ${entry.label}: missing --conclusion ${entry.label}=<text>`)
+    }
+    return { ...entry, conclusion }
+  })
+  for (const label of options.conclusions.keys()) {
+    if (!evidence.some((entry) => entry.label === label)) {
+      throw new ReleaseEvidenceError(`--conclusion ${label}: no matching --evidence entry`)
+    }
+  }
+  const target = archiveGate({
+    root: options.root,
+    version: options.version,
+    gateID,
+    commit,
+    date: options.date ?? now.toISOString().slice(0, 10),
+    generatedAt: options.generatedAtForTest ?? now.toISOString().replace(/\.\d{3}Z$/, "Z"),
+    status: options.status,
+    summary: options.summary,
+    evidence,
+    signatures: options.signs,
+  })
+  console.log(`release-evidence: archived gate ${gateID} at ${path.relative(options.root, target)}`)
+}
+
+function runCheck(options: CliOptions, positional: string[]): void {
+  let targets: string[]
+  if (positional.length > 0) {
+    targets = positional.map((entry) => path.resolve(entry))
+  } else {
+    const gateID = requireGateID(options)
+    targets = findManifestPaths(options.root, options.version, gateID, options.commit)
+    if (targets.length === 0) {
+      const where = options.commit
+        ? manifestPathFor(options.root, options.version, options.commit, gateID)
+        : path.join(options.root, EVIDENCE_DIRNAME, options.version, "<commit>", gateID, MANIFEST_FILENAME)
+      throw new ReleaseEvidenceError(`no manifest found for gate ${gateID} (expected ${where})`)
+    }
+  }
+  let failed = 0
+  for (const target of targets) {
+    const result = checkManifest(target)
+    if (result.ok) {
+      console.log(`release-evidence: OK ${path.relative(options.root, target) || target}`)
+      continue
+    }
+    failed += 1
+    console.error(`release-evidence: TAMPERED/INVALID ${path.relative(options.root, target) || target}`)
+    for (const failure of result.failures) console.error(`  - ${failure}`)
+  }
+  if (failed > 0) process.exit(1)
+}
+
+const USAGE = [
+  "usage:",
+  "  bun script/release-evidence.ts archive --gate <gate-id> [options]",
+  "  bun script/release-evidence.ts check --gate <gate-id> [--commit <sha>] [--version v4.1] [--root <dir>]",
+  "  bun script/release-evidence.ts check <path/to/manifest.json>",
+  "",
+  "options:",
+  "  --gate <id>                    gate id, e.g. release-gate-20260819",
+  "  --commit <sha>                 full commit sha (default: git rev-parse HEAD)",
+  "  --version <release>            release line (default v4.1)",
+  "  --date <YYYY-MM-DD>            gate date (default: today UTC)",
+  "  --status <s>                   passed|failed|blocked|not_run (default passed)",
+  "  --summary <text>               overall gate conclusion",
+  "  --evidence <kind>:<label>[:<path>]  evidence entry, repeatable",
+  "  --conclusion <label>=<text>    conclusion for an evidence entry, repeatable",
+  "  --sign <role>=<actor>          signature placeholder, repeatable",
+  "  --root <dir>                   repo root (default: script parent dir)",
+].join("\n")
+
+async function main(): Promise<void> {
+  try {
+    const { command, positional, options } = parseCliArgs(process.argv.slice(2))
+    if (command === "archive") await runArchive(options)
+    else runCheck(options, positional)
+  } catch (error) {
+    if (error instanceof ReleaseEvidenceError) {
+      console.error(`release-evidence: ${error.message}\n\n${USAGE}`)
+      process.exit(2)
+    }
+    throw error
+  }
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value)
+}
+
+if (import.meta.main) await main()
diff --git a/script/run-live-llm-all.ts b/script/run-live-llm-all.ts
index d6b3b7c4..17db6c01 100644
--- a/script/run-live-llm-all.ts
+++ b/script/run-live-llm-all.ts
@@ -5,6 +5,12 @@ import os from "node:os"
 import path from "node:path"
 import { parseArgs } from "node:util"
 import { validateLiveLLMKeyFile } from "../packages/llm/script/live-llm/config"
+import {
+  matchRegisteredLiveLLMProvider,
+  recommendedLiveLLMKeyFile,
+  resolveLiveLLMProvider,
+  type ResolvedLiveLLMProvider,
+} from "../packages/deepagent-code/script/live-llm/providers"
 
 export type RunnerConfig = {
   baseURL: string
@@ -509,23 +515,31 @@ export function runnerEnvironment(
 export function validateRunnerConfig(input: unknown, baseDirectory = repository): RunnerConfig {
   if (!isRecord(input)) throw new Error("Live LLM config must be a JSON object")
   if ("apiKey" in input) {
+    const recommendedProviderID =
+      (typeof input.baseURL === "string" ? matchRegisteredLiveLLMProvider(input.baseURL)?.id : undefined) ??
+      "deepseek"
     throw new Error(
       "Legacy live LLM JSON field apiKey is not accepted; move the key to a chmod 600 one-line file and " +
-        "set apiKeyFile (recommended: ~/.deepagent/code/tmp/live-llm-deepseek.key)",
+        `set apiKeyFile (recommended: ${recommendedLiveLLMKeyFile(recommendedProviderID)})`,
     )
   }
   const baseURL = requiredString(input.baseURL, "baseURL")
-  if (!URL.canParse(baseURL)) throw new Error("baseURL must be a valid URL")
-  const endpoint = new URL(baseURL)
-  if (endpoint.protocol !== "https:" || endpoint.hostname !== "api.deepseek.com") {
-    throw new Error(
-      `Real LLM suites currently require the official https://api.deepseek.com endpoint, received ${baseURL}`,
-    )
+  const provider = resolveLiveLLMProvider(baseURL)
+  const explicitProviderID = optionalProviderID(input.providerID)
+  if (explicitProviderID && explicitProviderID !== provider.id) {
+    if (provider.registered) {
+      throw new Error(
+        `providerID "${explicitProviderID}" does not match the official ${provider.label} endpoint ` +
+          `${provider.baseURL} (providerID: ${provider.id})`,
+      )
+    }
+    provider.id = explicitProviderID
+    provider.label = explicitProviderID
   }
   const apiKeyFile = resolveKeyFile(requiredString(input.apiKeyFile, "apiKeyFile"), baseDirectory)
   const modelRevision = optionalString(input.modelRevision)
   return {
-    baseURL: baseURL.replace(/\/$/, ""),
+    baseURL: provider.baseURL,
     apiKeyFile,
     model: requiredString(input.model, "model"),
     ...(modelRevision ? { modelRevision } : {}),
@@ -536,6 +550,15 @@ export function validateRunnerConfig(input: unknown, baseDirectory = repository)
   }
 }
 
+/**
+ * Resolves the provider fingerprint from a validated runner config. The identifier is
+ * derived from the endpoint registry (never hardcoded), so evidence reports record the
+ * actual provider that served the suites.
+ */
+export function runnerProvider(config: Pick<RunnerConfig, "baseURL">): ResolvedLiveLLMProvider {
+  return resolveLiveLLMProvider(config.baseURL)
+}
+
 export async function validateSuiteManifest() {
   const inventory = await loadRealLLMSuiteInventory()
   const registered = suites
@@ -580,6 +603,37 @@ export async function loadRealLLMSuiteInventory() {
   ).flat()
 }
 
+// QUAL-004: validateSuiteManifest only covers real-LLM suites; this closes
+// the remaining drift surface by checking EVERY registry entry that runs a
+// package script (`bun run <script>` or an explicit packageScript) against
+// the owning package.json. Suites invoking files directly (node ./scripts/…)
+// own their path and are skipped. Called before dry-run listing so stale
+// registry entries fail fast instead of dying mid-run.
+export async function validateRegistryScripts() {
+  const scripts = new Map<string, Set<string>>()
+  for (const packageName of ["llm", "core", "deepagent-code", "desktop"] as const) {
+    const payload: unknown = await Bun.file(path.join(repository, "packages", packageName, "package.json")).json()
+    if (!isRecord(payload) || !isRecord(payload.scripts)) {
+      throw new Error(`packages/${packageName}/package.json does not contain a scripts object`)
+    }
+    scripts.set(packageName, new Set(Object.keys(payload.scripts)))
+  }
+  const drift: string[] = []
+  for (const suite of suites) {
+    if (suite.package === "root") continue
+    const scriptName =
+      suite.packageScript ??
+      (suite.command[0] === "bun" && suite.command[1] === "run" ? suite.command[2] : undefined)
+    if (!scriptName) continue
+    if (!scripts.get(suite.package)?.has(scriptName)) {
+      drift.push(`${suite.id} → ${suite.package}:${scriptName}`)
+    }
+  }
+  if (drift.length) {
+    throw new Error(`Suite registry references package scripts that do not exist: ${drift.join(", ")}`)
+  }
+}
+
 async function main() {
   const options = parseArgs({
     args: Bun.argv.slice(2),
@@ -601,7 +655,9 @@ async function main() {
     )
   }
   const config = validateRunnerConfig(await Bun.file(configFile).json(), path.dirname(configFile))
+  const provider = runnerProvider(config)
   await validateSuiteManifest()
+  await validateRegistryScripts()
   if (!options["dry-run"]) await validateLiveLLMKeyFile(config.apiKeyFile)
   const selected = selectSuites({
     headless: options.headless,
@@ -612,7 +668,7 @@ async function main() {
   const realCount = selected.filter((suite) => suite.realLLM).length
   console.log(
     `Real LLM all-tests: ${selected.length} commands (${realCount} model suites), ` +
-      `model=${config.model}, endpoint=${config.baseURL}`,
+      `provider=${provider.id}, model=${config.model}, endpoint=${config.baseURL}`,
   )
   if (options["dry-run"]) {
     selected.forEach((suite, index) => console.log(`${index + 1}. ${suite.id}: ${suite.command.join(" ")}`))
@@ -713,7 +769,7 @@ async function main() {
             ? "passed"
             : "failed",
         fingerprint: {
-          providerID: "deepseek",
+          providerID: provider.id,
           baseURL: config.baseURL,
           modelID: config.model,
           modelRevision: config.modelRevision,
@@ -823,6 +879,16 @@ function optionalString(value: unknown) {
   return value.trim() || undefined
 }
 
+function optionalProviderID(value: unknown) {
+  if (value === undefined || value === null || value === "") return undefined
+  if (typeof value !== "string") throw new Error("providerID must be a string")
+  const trimmed = value.trim()
+  if (!/^[a-z0-9][a-z0-9_-]*$/.test(trimmed)) {
+    throw new Error("providerID must match /^[a-z0-9][a-z0-9_-]*$/")
+  }
+  return trimmed
+}
+
 function integer(value: unknown, name: string, minimum: number, maximum: number) {
   if (!Number.isSafeInteger(value) || (value as number) < minimum || (value as number) > maximum) {
     throw new Error(`${name} must be an integer between ${minimum} and ${maximum}`)