format dart files

formats all dart files using `dart format .` from the root project dir

this makes the code style repeatable by new contributors and makes PR review easier

lib/services/notification_service.dart

@@ -6,13 +6,16 @@ class NotificationService {
   factory NotificationService() => _instance;
   NotificationService._internal();
 
-  final FlutterLocalNotificationsPlugin _notifications = FlutterLocalNotificationsPlugin();
+  final FlutterLocalNotificationsPlugin _notifications =
+      FlutterLocalNotificationsPlugin();
   bool _isInitialized = false;
 
   Future<void> initialize() async {
     if (_isInitialized) return;
 
-    const androidSettings = AndroidInitializationSettings('@mipmap/ic_launcher');
+    const androidSettings = AndroidInitializationSettings(
+      '@mipmap/ic_launcher',
+    );
     const iosSettings = DarwinInitializationSettings(
       requestAlertPermission: true,
       requestBadgePermission: true,
@@ -47,16 +50,20 @@ class NotificationService {
     }
 
     // Request Android 13+ notification permission
-    final androidPlugin = _notifications.resolvePlatformSpecificImplementation<
-        AndroidFlutterLocalNotificationsPlugin>();
+    final androidPlugin = _notifications
+        .resolvePlatformSpecificImplementation<
+          AndroidFlutterLocalNotificationsPlugin
+        >();
     if (androidPlugin != null) {
       final granted = await androidPlugin.requestNotificationsPermission();
       return granted ?? false;
     }
 
     // iOS permissions are requested during initialization
-    final iosPlugin = _notifications.resolvePlatformSpecificImplementation<
-        IOSFlutterLocalNotificationsPlugin>();
+    final iosPlugin = _notifications
+        .resolvePlatformSpecificImplementation<
+          IOSFlutterLocalNotificationsPlugin
+        >();
     if (iosPlugin != null) {
       final granted = await iosPlugin.requestPermissions(
         alert: true,
@@ -204,9 +211,7 @@ class NotificationService {
     );
 
     final preview = message.trim();
-    final body = preview.isEmpty
-        ? 'Received new message'
-        : preview;
+    final body = preview.isEmpty ? 'Received new message' : preview;
 
     await _notifications.show(
       channelIndex?.hashCode ?? DateTime.now().millisecondsSinceEpoch,