- Add ./setup script for single-command device initialization
- Interactive menu: new setup, join existing, or pair mobile
- Bootstrap from git repo + age key: ./setup <url> <key>
- Mobile pairing with live camera QR scanning
- Enhance usync with device management commands
- usync init: bootstrap from config repo
- usync invite: show QR for mobile
- usync add-device: add device by ID
- usync join: join existing setup
- Mobile/GrapheneOS optimizations
- Live camera preview with targeting box (ffmpeg + SDL)
- Auto-detect QR codes without manual capture
- Syncthing pending device detection
- Simplify nix develop shell message
- Add ffmpeg, zbar, qrencode, age, sops to devShell
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>