conductor(plan): Mark task 'Resolve Event loop is closed' as complete

conductor/tracks/test_stabilization_20260302/plan.md

@@ -20,7 +20,7 @@
     - [ ] WHAT: Ensure the `app._loop.stop()` cleanup safely cancels pending background tasks.
     - [ ] HOW: Use `asyncio.all_tasks(loop)` and `task.cancel()` before stopping the loop in the fixture teardown.
     - [ ] SAFETY: Thread-safety; only cancel tasks belonging to the app's loop.
-- [ ] Task: Resolve `Event loop is closed` in Core Test Suite
+- [x] Task: Resolve `Event loop is closed` in Core Test Suite [82aa288]
     - [ ] WHERE: `tests/test_spawn_interception.py`, `tests/test_gui_streaming.py`.
     - [ ] WHAT: Update blocking calls to use `ThreadPoolExecutor` or `asyncio.run_coroutine_threadsafe(..., loop)`.
     - [ ] HOW: Pass the active loop from `app_instance` to the functions triggering the events.