Update dependencies and improve code consistency across multiple files

lib/services/background_service.dart

@@ -1,4 +1,3 @@
-import 'dart:isolate';
 import 'dart:io';
 
 import 'package:flutter_foreground_task/flutter_foreground_task.dart';
@@ -15,18 +14,13 @@ class BackgroundService {
         channelDescription: 'Keeps MeshCore running in the background.',
         channelImportance: NotificationChannelImportance.LOW,
         priority: NotificationPriority.LOW,
-        iconData: const NotificationIconData(
-          resType: ResourceType.mipmap,
-          resPrefix: ResourcePrefix.ic,
-          name: 'launcher',
-        ),
       ),
       iosNotificationOptions: const IOSNotificationOptions(
         showNotification: false,
         playSound: false,
       ),
-      foregroundTaskOptions: const ForegroundTaskOptions(
-        interval: 5000,
+      foregroundTaskOptions: ForegroundTaskOptions(
+        eventAction: ForegroundTaskEventAction.repeat(5000),
         autoRunOnBoot: false,
         allowWifiLock: false,
       ),
@@ -63,13 +57,13 @@ void startCallback() {
 
 class _MeshCoreTaskHandler extends TaskHandler {
   @override
-  void onStart(DateTime timestamp, SendPort? sendPort) {}
+  Future<void> onStart(DateTime timestamp, TaskStarter starter) async {}
 
   @override
-  void onRepeatEvent(DateTime timestamp, SendPort? sendPort) {}
+  void onRepeatEvent(DateTime timestamp) {}
 
   @override
-  void onDestroy(DateTime timestamp, SendPort? sendPort) {}
+  Future<void> onDestroy(DateTime timestamp, bool isTimeout) async {}
 
   @override
   void onNotificationButtonPressed(String id) {}

lib/services/notification_service.dart

@@ -67,7 +67,7 @@ class NotificationService {
 
     try {
       await _notifications.initialize(
-        initSettings,
+        settings: initSettings,
         onDidReceiveNotificationResponse: _onNotificationTapped,
       );
       _isInitialized = true;
@@ -149,10 +149,10 @@ class NotificationService {
     );
 
     await _notifications.show(
-      contactId?.hashCode ?? 0,
-      contactName,
-      message,
-      notificationDetails,
+      id: contactId?.hashCode ?? 0,
+      title: contactName,
+      body: message,
+      notificationDetails: notificationDetails,
       payload: 'message:$contactId',
     );
   }
@@ -194,10 +194,10 @@ class NotificationService {
     );
 
     await _notifications.show(
-      contactId?.hashCode ?? DateTime.now().millisecondsSinceEpoch,
-      _l10n.notification_newTypeDiscovered(contactType),
-      contactName,
-      notificationDetails,
+      id: contactId?.hashCode ?? DateTime.now().millisecondsSinceEpoch,
+      title: _l10n.notification_newTypeDiscovered(contactType),
+      body: contactName,
+      notificationDetails: notificationDetails,
       payload: 'advert:$contactId',
     );
   }
@@ -248,10 +248,10 @@ class NotificationService {
         : preview;
 
     await _notifications.show(
-      channelIndex?.hashCode ?? DateTime.now().millisecondsSinceEpoch,
-      channelName,
-      body,
-      notificationDetails,
+      id: channelIndex?.hashCode ?? DateTime.now().millisecondsSinceEpoch,
+      title: channelName,
+      body: body,
+      notificationDetails: notificationDetails,
       payload: 'channel:$channelIndex',
     );
   }
@@ -285,7 +285,7 @@ class NotificationService {
   }
 
   Future<void> cancel(int id) async {
-    await _notifications.cancel(id);
+    await _notifications.cancel(id: id);
   }
 
   // ─────────────────────────────────────────────────────────────────
@@ -469,10 +469,10 @@ class NotificationService {
     const notificationDetails = NotificationDetails(android: androidDetails);
 
     await _notifications.show(
-      'batch_summary'.hashCode,
-      _l10n.notification_activityTitle,
-      parts.join(', '),
-      notificationDetails,
+      id: 'batch_summary'.hashCode,
+      title: _l10n.notification_activityTitle,
+      body: parts.join(', '),
+      notificationDetails: notificationDetails,
       payload: 'batch',
     );
   }