A bit of notification turn on reminder

lib/screens/dashboard/dashboard_screen.dart

@@ -1,4 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:permission_handler/permission_handler.dart';
+
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../models/profile.dart';
@@ -299,9 +302,49 @@ final dashboardMetricsProvider = Provider<AsyncValue<DashboardMetrics>>((ref) {
   );
 });
 
-class DashboardScreen extends StatelessWidget {
+class DashboardScreen extends StatefulWidget {
   const DashboardScreen({super.key});
 
+  @override
+  State<DashboardScreen> createState() => _DashboardScreenState();
+}
+
+class _DashboardScreenState extends State<DashboardScreen> {
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      final prefs = await SharedPreferences.getInstance();
+      final seen = prefs.getBool('has_seen_notif_showcase') ?? false;
+      if (!seen) {
+        if (!mounted) return;
+        await showDialog<void>(
+          context: context,
+          builder: (context) => AlertDialog(
+            title: const Text('Never miss an update'),
+            content: const Text(
+              'Ensure notification sounds and vibration are enabled for important alerts.',
+            ),
+            actions: [
+              TextButton(
+                onPressed: () {
+                  Navigator.of(context).pop();
+                  openAppSettings();
+                },
+                child: const Text('Open settings'),
+              ),
+              TextButton(
+                onPressed: () => Navigator.of(context).pop(),
+                child: const Text('Got it'),
+              ),
+            ],
+          ),
+        );
+        await prefs.setBool('has_seen_notif_showcase', true);
+      }
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     final realtime = ProviderScope.containerOf(