New mobile/ directory with Capacitor project:
- Configurable server URL launcher (default: app.pedshub.com)
- Android: foreground service + wake lock for background recording
(AudioRecordingService preserved from existing TWA)
- iOS: background audio mode + microphone permission
- App ID: com.pedshub.scribe
- Both platforms initialized and synced
Existing android/ TWA project untouched — this is a separate project.
Build: cd mobile && npx cap open android (or ios)
