feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/client-app/lib/features/notificatins/data/notification_gql.dart

@@ -0,0 +1 @@
+

mobile-apps/client-app/lib/features/notificatins/data/notifications_api_provider.dart

@@ -0,0 +1,16 @@
+import 'package:graphql_flutter/graphql_flutter.dart';
+import 'package:injectable/injectable.dart';
+import 'package:krow/core/application/clients/api/api_client.dart';
+import 'package:krow/core/application/clients/api/api_exception.dart';
+import 'package:krow/features/clock_manual/data/clock_manual_gql.dart';
+
+@singleton
+class NotificationsApiProvider {
+  final ApiClient _client;
+
+  NotificationsApiProvider({required ApiClient client}) : _client = client;
+
+  Future<void> trackClientClockin(String positionStaffId) async {
+  }
+
+}

mobile-apps/client-app/lib/features/notificatins/data/notifications_repository_impl.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/foundation.dart';
+import 'package:injectable/injectable.dart';
+import 'package:krow/features/notificatins/domain/notification_entity.dart';
+
+import '../domain/notification_repository.dart';
+import 'notifications_api_provider.dart';
+
+@Singleton(as: NotificationsRepository)
+class NotificationsRepositoryImpl implements NotificationsRepository {
+  final NotificationsApiProvider apiProvider;
+
+  NotificationsRepositoryImpl({required this.apiProvider});
+
+  @override
+  Future<List<NotificationEntity>> fetchNotifications() async {
+    try {
+      // final response = await apiProvider.fetchNotifications();
+      // return response;
+      if (!kDebugMode) {
+        return [
+          NotificationEntity(
+            id: '1',
+            title: 'Test Notification',
+            body: 'This is a test notification',
+            type: NotificationType.general,
+            dateTime: DateTime.now(),
+          ),
+          NotificationEntity(
+            id: '2',
+            title: 'Invoice Notification',
+            body: 'This is an invoice notification',
+            type: NotificationType.invoice,
+            dateTime: DateTime.now().subtract(Duration(days: 1)),
+          ),
+        ];
+      } else {
+        return [];
+      }
+    } catch (e) {
+      debugPrint('Error fetching notifications: $e');
+      rethrow;
+    }
+  }
+
+  @override
+  Future<void> readNotification(String id) async {}
+}