- VioletHistory model: stores plaintext turns (user/assistant) per user_id
- AI worker loads last 20 turns into Ollama prompt for context
- Saves both user message and AI response after each exchange
- /reset command in Violet PM clears conversation memory
- Fix ai_limit_reached: emit ai_response event instead of raw pm_message
- ai_response handler uses correct PM room and supports plaintext text field
- Remove debug print statements
- Add Ban and Mute models to models.py
- Load persisted bans/mutes from DB on app startup in create_app()
- Persist ban to DB on mod_ban and mod_kickban
- Persist/delete mute to DB on mod_mute toggle
- Bans and mutes now survive server restarts