- Fix search API to only include column_names when present to make the API less confusing
- Ensure correct LLM is used in PMs by tracking and preferring the last bot user
- Fix persona_id conversion from string to integer in custom fields
- Add missing test for PM triage with no replies - ensure we don't try to auto title topic
- Ensure bot users are properly added to PMs
- Make title setting optional when replying to posts
- Add ability to control stream_reply behavior
These changes improve reliability and fix edge cases in bot interactions,
particularly in private messages with multiple LLMs and while triaging posts using personas