The autonomous loop was crashing on every decision with:
TypeError: can't subtract offset-naive and offset-aware datetimes
because MongoDB stores created_at without timezone info but the code
compared it against datetime.now(timezone.utc).
- conversation_context_service: make created_at timezone-aware before
subtraction (replace tzinfo=utc when naive)
- DiscussionPanel: fix sync effect — when server reports AI mode is
inactive, always clear localAiModeActive regardless of its value,
so the "AI is generating..." spinner doesn't get stuck when the
backend fails/stops before the frontend has confirmed AI mode started
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2e85fc1acc