Fix sequential and non-interactive terminal resize replay

[r-sandeep]

Summary

Fix terminal transcript restoration after resize so replay is sequential, non-interactive, and busy-owned for its full duration.

Changes

• await deep-link replay before replaying command history
• await each replayed command before rendering the next history entry or final prompt
• keep term.busy true throughout replay and restore replay state in cleanup
• coalesce concurrent resize replays behind one promise
• render apply and animated upgrade history lines without re-running their side effects
• preserve existing replay behavior for history, analytics, and guarded window opening
• add focused regression coverage for deep-link ordering, asynchronous command ordering, interactive-flow suppression, busy cleanup, concurrent resize handling, and preserved open behavior

Scope

Only the requested files are changed:

• js/terminal-ext.js
• tests/terminal-ext.test.js

No dependencies were added.

Validation

• npm test — passed: 7 test files, 128 tests
• npm run build — passed

Both canonical commands also passed in clean-checkout validation on the reviewed repository state.

Approvals and review

• Required approvals: 15 decided, 0 open
• Policy decisions: allow; no additional approvals required
• Final critic review: passed with no unresolved risks or delivery blockers

ASD references

• Workflow run: workflow_run_42e4928e9c524260a2312e43d97a5a3a
• Task: task_e8fcae1a7570437ab079659ada789b9c
• Work packet node: prepare_outcome_delivery
• Lane: enterprise_bug_fix_council_v1