Harden Claude stream exit handling

[juliusmarminge]

Summary

• Guard provider runtime ingestion against malformed runtime.error and turn.completed payloads so Claude exits do not crash orchestration.
• Simplify bootstrap stream handling for inherited file descriptors and tighten desktop shutdown behavior during update install and window teardown.
• Remove archived-thread/orchestration paths and related UI/state code that is no longer used.
• Refresh tests around provider runtime ingestion, bootstrap reading, shell environment sync, and desktop/server startup behavior.

Testing

• Not run in this session.
• Existing test coverage was updated for runtime ingestion, bootstrap fd handling, and shell environment sync.
• Project-level checks still need to pass: bun fmt, bun lint, and bun typecheck.

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Note

Medium Risk
Changes Claude session stream lifecycle/cleanup behavior by running handleStreamExit inside the stream fiber and suppressing exit handling when the session is intentionally stopped, which could affect turn completion and session shutdown sequencing.

Overview
Hardens Claude stream shutdown handling in ClaudeAdapter by moving handleStreamExit execution into the stream fiber’s completion path (via Effect.exit(...).flatMap(...)) instead of observer-forking a separate fiber.

It now skips exit handling when context.stopped and tightens context.streamFiber reference clearing to reduce races between observer teardown and cleanup.

^{Written by Cursor Bugbot for commit 4aa898e. This will update automatically on new commits. Configure here.}

Note

Harden stream exit handling in ClaudeAdapter by running cleanup inside the stream fiber

• handleStreamExit now runs inside the stream fiber on completion rather than being invoked via a separate observer-forked fiber, avoiding a race between the observer and fiber teardown.
• Exit handling is skipped entirely when context.stopped is true, preventing redundant cleanup on intentional stops.
• The context.streamFiber reference is cleared by the observer unconditionally, and also cleared within the fiber itself when the stream exits normally.
• streamFiber is now typed explicitly as Fiber.Fiber<void, never> and assigned before being stored on context.
• Behavioral Change: previously handleStreamExit could be called even after the stream was stopped; it is now suppressed in that case.

^{Macroscope summarized 4aa898e.}

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