- professional_denied_screen: full UI with icon, bullet list of next steps,
re-register button and logout option (was just a Text widget)
- professional_pending_screen: replace static GIF screen with step-by-step
progress indicator (submitted → in review → approved), notification tip,
logout button
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Replace all Firebase* repositories with Api* repositories using HTTP + SharedPreferences JWT
- Remove Firebase.initializeApp() and firebase_messaging background handler from main.dart
- Update DI (app_di.dart) to inject Api* repositories instead of Firebase* ones
- Replace all Timestamp/cloud_firestore usage with ISO 8601 String dates
- Stub PhoneVerificationService (Firebase phone OTP → backend OTP when implemented)
- Add ApiService singleton with JWT management in lib/services/
- Legacy firebase_*_repository.dart files preserved for Fase 4 cleanup
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
