# 25. Implement Android notification service

meta:
  id: native-business-logic-migration-25
  feature: native-business-logic-migration
  priority: P1
  depends_on: [native-business-logic-migration-16]
  tags: [implementation, android, notifications]

objective:
- Implement push and local notification service for Android

deliverables:
- NotificationService.kt
- NotificationManager.kt
- NotificationPreferencesStore.kt
- Notification channels
- Badge management

tests:
- Unit: Test notification configuration
- Unit: Test permission handling
- Integration: Test notification delivery

acceptance_criteria:
- Push notifications received
- Local notifications scheduled
- Badge count updated
- Notification channels working
- Preferences respected

validation:
- Test with Firebase Console
- Verify in Settings > Apps > Notifications

notes:
- Use NotificationCompat
- Create proper notification channels
- Handle Android 13+ permissions
