Preserve draft thread terminal state during snapshot cleanup

[juliusmarminge]

Summary

• keep terminal state for local draft threads when processing server snapshots
• add collectActiveTerminalThreadIds to merge active server thread IDs with draft thread IDs before orphan cleanup
• update root event routing to source draft thread IDs from useComposerDraftStore
• add focused tests covering retained server threads, deleted server threads, and local draft thread retention

Testing

• Not run (tests not executed in this context)
• Added unit tests in apps/web/src/lib/terminalStateCleanup.test.ts for:
  • retaining non-deleted server threads
  • excluding deleted server threads while preserving local draft threads

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Note

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Note

Preserve terminal states for local draft threads by passing active thread IDs from routes.__root.EventRouter.flushSnapshotSync using lib.terminalStateCleanup.collectActiveTerminalThreadIds

Add collectActiveTerminalThreadIds to merge non-deleted snapshot thread IDs with draft thread IDs and use it in flushSnapshotSync so removeOrphanedTerminalStates receives the combined set; add tests in terminalStateCleanup.test.ts.

📍Where to Start

Start with flushSnapshotSync in apps/web/src/routes/__root.tsx, then review collectActiveTerminalThreadIds in apps/web/src/lib/terminalStateCleanup.ts.

^{Macroscope summarized 5dc3c89.}

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✨ Finishing Touches

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