docs: record official v0.8.0 alignment work

docs/official-v080-alignment.md

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+# Official v0.8.0 Alignment Checklist
+
+This checklist records the remaining site work against the official
+`MaimoryLab/BootAgent` source. The comparison baseline is tag `v0.7.1`
+(`4fe376cb`) and the target is tag `v0.8.0` (`3b9e5a4`, released 2026-08-26).
+
+## Completed in the site
+
+- [x] Download metadata does not claim that every platform is available when
+      only one target has a verified artifact.
+- [x] Gitee download links are emitted per asset and fall back to GitHub when
+      the mirror does not contain that asset.
+- [x] Release provenance and the public changelog identify v0.8.0.
+
+## Required follow-up
+
+### Release and updater surface
+
+- [ ] Remove Linux AppImage from release-facing copy and fixtures. v0.8.0 ships
+      `.deb`, `.rpm`, and OTA packages only.
+- [ ] Document that the desktop updater uses Gitee when the domestic mirror
+      setting is enabled and falls back to GitHub when the mirror fails.
+- [ ] Add a release-asset contract test for the v0.8.0 asset set, including the
+      absence of AppImage and presence of `SHA256SUMS`.
+
+### Agent and desktop catalog
+
+- [ ] Reconcile `data/agents.lock.json` and `data/desktop-agents.json` with the
+      v0.8.0 registry and record the source commit for every hand-transcribed
+      desktop entry.
+- [ ] Add Web App metadata (`web_url`) to the site-facing catalog model and
+      render the browser launch behavior separately from terminal commands.
+- [ ] Update launch and migration help copy for Web App startup, BOM-tolerant
+      config migration, and continue-on-error migration behavior.
+
+### Marketplace
+
+- [ ] Define a site-facing marketplace data contract for SkillHub, MCP Servers,
+      extensions, GitHub-backed items, and ecosystem links.
+- [ ] Add localized marketplace list and detail routes with source links,
+      filters, tags, README content, install prompts, and external-link safety.
+- [ ] Add deterministic fixture tests and an accessibility/E2E pass for the
+      marketplace list, filters, detail pages, and copy-to-clipboard action.
+
+## Source evidence
+
+The official v0.8.0 change set adds marketplace data and pages, Web App launch
+metadata, updater mirror routing/fallback, Linux AppImage removal, and config
+migration fixes. These concerns are intentionally separated so each follow-up
+PR can be reviewed and deployed independently.