emozilla ab6abc2c13 fix: use per-thread persistent event loops in worker threads ...

Replace asyncio.run() with thread-local persistent event loops for
worker threads (e.g., delegate_task's ThreadPoolExecutor). asyncio.run()
creates and closes a fresh loop on every call, leaving cached
httpx/AsyncOpenAI clients bound to a dead loop — causing 'Event loop is
closed' errors during GC when parallel subagents clean up connections.

The fix mirrors the main thread's _get_tool_loop() pattern but uses
threading.local() so each worker thread gets its own long-lived loop,
avoiding both cross-thread contention and the create-destroy lifecycle.

Added 4 regression tests covering worker loop persistence, reuse,
per-thread isolation, and separation from the main thread's loop.

2026-03-20 15:41:06 -04:00

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