Test SMS, email, and push notifications across apps
1. Test Setup: Enter an app ID (tjfa, pasan, tuneshack) and user email
2. Click "Run Test": System will send a test notification if user preferences exist
3. Check Channels: User must have at least one channel enabled (SMS, Email, or Push)
4. View Preferences: Use the settings panel below to adjust notification channels and types
5. View Logs: Check NotificationLog entity for delivery status and errors