- Create knowledge.py handler with dynamic book selection
- Support list/select/query actions for multiple books
- Implement vector search with cosine similarity
- Add knowledge detection to AI parser config
- Cache embeddings per-book for performance
- Enhanced AI prompts with time/frequency conversion rules and 20+ examples
- Added smart medication name resolution and confirmation flows
- New medication commands: today, refills, snooze, adherence
- New routine commands: create_with_steps, add_steps, steps, schedule
- Added active session awareness with shortcuts (done, skip, pause, resume)
- Confirmation handling for destructive/create actions
- Improved help message with natural language examples
