simulacion de estados y flujo de notificacion, modificacion de estilos en todas las vistas

recolecta_app/lib/main.dart

@@ -1,22 +1,12 @@
 import 'package:firebase_core/firebase_core.dart';
-import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import 'app/app.dart';
+import 'features/notifications/notification_service.dart';
 import 'firebase_options.dart';
 
-@pragma('vm:entry-point')
-Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
-  try {
-    await Firebase.initializeApp(
-      options: DefaultFirebaseOptions.currentPlatform,
-    );
-  } catch (_) {}
-  debugPrint('FCM background: ${message.messageId} | data: ${message.data}');
-}
-
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   try {
@@ -31,6 +21,8 @@ Future<void> main() async {
   } on UnsupportedError {
     await Firebase.initializeApp();
   }
-  FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);
+  // Registra handlers FCM (foreground + background), pide permisos
+  // POST_NOTIFICATIONS y crea el canal Android `recolecta_alerts`.
+  await NotificationService.initialize();
   runApp(const ProviderScope(child: RecolectaApp()));
 }