- Add expo-notifications dependency and configure with JPush plugin
- Request notification permission on app launch for iOS/Android
- Handle notification taps to navigate to chat or notifications screen
- Add UI to check and request system notification permission in settings
- Refactor background sync: WebSocket disconnects in background, JPush handles push
- Add checkNotificationPermission() and requestNotificationPermission() to jpushService
Replace expo-notifications with JPush for push notifications across the app.
This includes adding JPush native module dependencies, configuring the JPush
plugin in app.json, implementing jpushService wrapper, and updating notification
services to use JPush APIs. Also adds device registration on token refresh for
both mobile and web platforms.
BREAKING CHANGE: expo-notifications removed in favor of JPush for push notifications
