- Add briefing dashboard adapter wiring to hub for morning briefing push
- Morning briefing provides warm summary when user first opens dashboard each day
- Content includes: sleep summary, who is home, overnight anomalies, system health, predictions, learning progress
- Briefing generated automatically and stored as daily record in briefings table
- Delivered via dashboard (card overlay on first open), push notification at configured time, or webhook
- Display modes supported: expert mode (overlay), simple mode (first card), ambient mode (fade-in text)
- Briefing scheduler generates daily briefings and sends push notifications
- API endpoints: GET/POST /api/briefing/* for managing briefings