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

recolecta_app/lib/features/alerts/alerts_provider.dart

@@ -0,0 +1,38 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+class AppAlert {
+  final String id;
+  final String title;
+  final String body;
+  final DateTime timestamp;
+
+  AppAlert({
+    required this.id,
+    required this.title,
+    required this.body,
+    required this.timestamp,
+  });
+}
+
+class AlertsNotifier extends Notifier<List<AppAlert>> {
+  @override
+  List<AppAlert> build() => [];
+
+  void addAlert(String title, String body) {
+    state = [
+      AppAlert(
+        id: DateTime.now().millisecondsSinceEpoch.toString(),
+        title: title,
+        body: body,
+        timestamp: DateTime.now(),
+      ),
+      ...state,
+    ];
+  }
+
+  void clearAll() => state = [];
+}
+
+final alertsProvider = NotifierProvider<AlertsNotifier, List<AppAlert>>(
+  AlertsNotifier.new,
+);