- Extract http.rs: unified HTTP server with /api/timers and gitea webhook
- Life loop: select! on interval tick + mpsc channel for force-fire
- Predefined diary timer (cron 22:55 daily), auto-registered on startup
- BufferOutput for system timers (chat_id=0), no TG message
- state: ensure_timer(), get_timer()
- context.md: add blog and Hugo docs for AI
