feat: migrate prosappco from Firebase to NestJS REST API (Fase 2)

- 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>

lib/screens/lists/professional_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -173,13 +174,13 @@ class _ProfessionalListScreenState extends State<ProfessionalListScreen> {
               .toLowerCase()
               .contains(removeDiacritics(_searchController.text.toLowerCase())))
           .where((user) =>
-              user.myUser.id != FirebaseAuth.instance.currentUser!.uid)
+              user.myUser.id != ApiUserRepository.currentUserId ?? '')
           .where(
               (user) => user.professionalInfo.profession == _selectedProfession)
           .toList();
       // } else {
       //   filteredUsers = state.users
-      //       // .where((user) => user.myUser.id != FirebaseAuth.instance.currentUser!.uid)
+      //       // .where((user) => user.myUser.id != ApiUserRepository.currentUserId ?? '')
       //       .toList();
       // }
 

lib/screens/lists/professional_pending_service_list.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -28,7 +29,7 @@ class _ProfessionalPendingServiceListScreenState
 
     serviceBloc = Injector.appInstance.get<ServiceBloc>();
 
-    serviceBloc.add(LoadPendingServicesForProfessional(FirebaseAuth.instance.currentUser!.uid));
+    serviceBloc.add(LoadPendingServicesForProfessional(ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/professional_score_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -25,7 +26,7 @@ class _ProfessionalScoreListScreenState
     scoreBloc = Injector.appInstance.get<ScoreBloc>();
 
     scoreBloc.add(LoadScoresForProfessionalEvent(
-        userId: FirebaseAuth.instance.currentUser!.uid));
+        userId: ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/professional_service_history_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -29,7 +30,7 @@ class _ProfessionalServiceHistoryListScreenState
     serviceBloc = Injector.appInstance.get<ServiceBloc>();
 
     serviceBloc.add(LoadServicesHistoryForProfessional(
-        FirebaseAuth.instance.currentUser!.uid));
+        ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/professional_service_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -28,7 +29,7 @@ class _ProfessionalServiceListScreenState
 
     serviceBloc = Injector.appInstance.get<ServiceBloc>();
 
-    serviceBloc.add(LoadServicesForProfessional(FirebaseAuth.instance.currentUser!.uid));
+    serviceBloc.add(LoadServicesForProfessional(ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/user_score_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -24,7 +25,7 @@ class _UserScoreListScreenState extends State<UserScoreListScreen> {
     scoreBloc = Injector.appInstance.get<ScoreBloc>();
 
     scoreBloc.add(
-        LoadScoresForUserEvent(userId: FirebaseAuth.instance.currentUser!.uid));
+        LoadScoresForUserEvent(userId: ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/user_service_history_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -29,7 +30,7 @@ class _UserServiceHistoryListScreenState
     serviceBloc = Injector.appInstance.get<ServiceBloc>();
 
     serviceBloc.add(
-        LoadServicesHistoryForUser(FirebaseAuth.instance.currentUser!.uid));
+        LoadServicesHistoryForUser(ApiUserRepository.currentUserId ?? ''));
   }
 
   @override

lib/screens/lists/user_service_list_screen.dart

@@ -1,4 +1,5 @@
-import 'package:firebase_auth/firebase_auth.dart';
+import 'package:user_repository/user_repository.dart';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -27,7 +28,7 @@ class _UserServiceListScreenState extends State<UserServiceListScreen> {
     serviceBloc = Injector.appInstance.get<ServiceBloc>();
 
     serviceBloc
-        .add(LoadServicesForUser(FirebaseAuth.instance.currentUser!.uid));
+        .add(LoadServicesForUser(ApiUserRepository.currentUserId ?? ''));
   }
 
   @override