[jaywedgeworth22]

Summary

Ensures queued snapshot writes finish during app quit without blocking termination.

On applicationShouldTerminate, the app now stops sampling, asynchronously flushes pending snapshot writes with a 2-second deadline, then confirms termination, instead of quitting immediately and dropping queued I/O.

What changed

• Graceful quit: Termination is deferred (terminateLater) until flushSnapshotWrites() completes or times out, keeping the main actor free for queued completions.
• Bounded drain: Added SnapshotWriteDrain helper that waits for the in-flight write chain with a timeout. Timeout unblocks quit without cancelling the underlying disk write.
• Ordered disable: Disabling local state now enqueues snapshot removal through the write handoff queue instead of deleting directly, preserving write order.
• Fresh widget order: Widget snapshot completion now reads platformOrder at completion time instead of using a value captured at enqueue time.
• Tests: Added SnapshotWriteDrainTests covering empty queue, main-actor completion ordering, real queued file write + flush, timeout behavior, and termination/disable integration checks.

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Ensures queued snapshot writes finish during app quit without blocking termination (CC-196).

What changed:

• App termination now defers quit reply until pending snapshot writes drain, allowing the app to exit promptly once the flush completes or times out instead of hanging.
• Snapshot write queue is closed when the flush starts — previously queued writes still complete in order, while any late writes enqueued after termination begins are ignored.
• Repeated terminate requests reuse the same flush operation instead of starting a new one.
• Added test coverage verifying queue closure preserves prior write ordering and that late completions are dropped, and updated termination integration checks for the new defer-and-reply behavior.

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Summary

Ensures queued snapshot writes are finished during app quit without blocking termination, and that a restarted monitor starts a new drain lifecycle (CC-196).

What changed

• App termination flow (AppDelegate.swift): After awaiting the in-flight snapshot flush, clears the flush-task tracking before replying toApplicationShouldTerminate: true, allowing quit to proceed as terminateLater once queued writes complete.
• Monitor resume (MonitorModel.swift): start() reopens snapshot-write admission by resetting snapshotWritesClosedForTermination to false, so writes enqueued after a restart are accepted and waited on by the next drain while remaining ordered behind any unfinished I/O.

Tests

• Added testRestartReopensAdmissionAndNextDrainWaitsForNewWrites to verify stop → drain → start reopens admission and a resumed write completes on the next drain.
• Updated termination integration assertions to cover the flush-await → clear-task → reply sequence.

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Summary

Ensures app quit finishes queued snapshot writes without blocking, then allows termination to proceed.

What Changed

• Deferred quit for snapshot drain: Termination now returns terminateLater, stops new work, asynchronously waits for queued snapshot writes to flush, then replies to allow quit.
• Single terminal drain per process: Repeated termination requests share one stop/flush operation while each request still gets its own allow-to-terminate reply. Stale or late callbacks cannot start a new generation of work.
• Termination is terminal: Once snapshot writes are closed for termination, restarting the monitor does not reopen admission and newly enqueued writes are not run, preventing old filesystem writes from racing newer snapshots.
• Tests updated: Replaced resume/reopen coverage with terminal-lifecycle coverage, added coverage for shared drain across repeated termination callbacks, and updated integration checks for the new drain path.

[linear-code]

CC-196

[kody-ai]

Found critical issues please review the requested changes

• Repeated quit returns terminateLater without ever replying
• Writes enqueued after flush starts are never drained

[swu-echo]

@kody start-review

Final-code review requested for exact head 578c90a. Addresses both previous findings: one shared flush task with a reply per quit callback; termination closes queue admission before awaiting without clearing the ordered chain. Actual Mac compile plus 10 focused tests pass (0 failures), including post-close enqueue rejection and source integration coverage. No merge, runtime install or deployment performed.

[swu-echo]

@kody start-review

Final-code review requested at exact 97f8835. Follow-on cancellation/restart findings fixed: clear retained flush task before replying and reopen admission in MonitorModel.start, retaining old chain ordering. Actual Mac compile and 11 focused snapshot/termination/dedup tests pass. No runtime installation or deployment performed.

[kody-ai]

Found critical issues please review the requested changes

• Stale waiter unconditionally clears newer flush task causing early quit

[swu-echo]

@kody start-review

Final-code review requested for exact 5c86684. Owner-aligned terminal-stop lifecycle, not cancelled-quit recovery. Behavioral repeated callbacks share one retained drain forever; no stale task clearing/newer generation exists. MonitorModel.start cannot reopen after termination. No unsafe reset of potentially active disk I/O. Actual Mac compile and 12 focused tests pass, 0 failures. See unresolved discussion4433420643 for lifecycle evidence and disputed recovery assumption. No merge, runtime install or deployment.

[kody-ai]

Kody Review Complete

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Keep up the excellent work! 🚀

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