Saber e5b149068c

Fix(subagent): Event loop conflict in SubagentExecutor.execute() (#1965) ...

* Fix event loop conflict in SubagentExecutor.execute()

When SubagentExecutor.execute() is called from within an already-running
event loop (e.g., when the parent agent uses async/await), calling
asyncio.run() creates a new event loop that conflicts with asyncio
primitives (like httpx.AsyncClient) that were created in and bound to
the parent loop.

This fix detects if we're already in a running event loop, and if so,
runs the subagent in a separate thread with its own isolated event loop
to avoid conflicts.

Fixes: sub-task cards not appearing in Ultra mode when using async parent agents

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(subagent): harden isolated event loop execution

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-08 11:46:06 +08:00

..

harness

Fix(subagent): Event loop conflict in SubagentExecutor.execute() (#1965)

2026-04-08 11:46:06 +08:00