refactor(profile): update ProfileRepository to include Ref for improved state management and enhance error handling in tests

flutter/lib/core/api/api_client.dart

@@ -1,5 +1,6 @@
 import 'dart:convert';
 
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:http/http.dart' as http;
 
 import 'api_exception.dart';
@@ -128,4 +129,8 @@ class ApiClient {
     if (parsedBody is String && parsedBody.trim().isNotEmpty) return parsedBody;
     return null;
   }
-}
+}
+
+final apiClientProvider = Provider<ApiClient>((ref) {
+  return ApiClient();
+});

flutter/lib/features/profile/data/profile_repository.dart

@@ -2,25 +2,29 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../../core/api/api_client.dart';
 import '../../../core/api/guarded_api_call.dart';
 import '../../../core/api/api_exception.dart';
+import '../../auth/data/auth_providers.dart';
 
 final profileRepositoryProvider = Provider<ProfileRepository>((ref) {
   final apiClient = ref.read(apiClientProvider);
-  return ProfileRepository(apiClient);
+  return ProfileRepository(apiClient, ref);
 });
 
 class ProfileRepository {
   final ApiClient _apiClient;
+  final Ref _ref;
 
-  ProfileRepository(this._apiClient);
+  ProfileRepository(this._apiClient, this._ref);
 
   Future<Map<String, dynamic>> getProfile() async {
     return guardedApiCall(
+      _ref,
       () => _apiClient.getJson('/api/profile'),
     );
   }
 
   Future<Map<String, dynamic>> updateProfile(Map<String, dynamic> profileData) async {
     return guardedApiCall(
+      _ref,
       () => _apiClient.patchJson('/api/profile', profileData),
     );
   }