Use own Dio instance for prompt service

lib/main/bindings/network/network_bindings.dart

@@ -72,6 +72,7 @@ class NetworkBindings extends Bindings {
     Get.put(AppAuthWebPlugin());
     Get.put(OIDCHttpClient(Get.find<DioClient>()));
     Get.put(AuthenticationClientBase());
+    Get.put(Dio(), tag: 'prompt');
   }
 
   void _bindingSharing() {
@@ -147,6 +148,6 @@ class NetworkBindings extends Bindings {
 
   void _bindingServices() {
     Get.put(DnsLookupManager());
-    Get.put(PromptService(Get.find<DioClient>()));
+    Get.put(PromptService(Get.find<Dio>(tag: 'prompt')));
   }
 }

scribe/lib/scribe/ai/data/service/prompt_service.dart

@@ -1,21 +1,21 @@
 import 'dart:async';
 import 'dart:convert';
-import 'package:core/data/network/dio_client.dart';
 import 'package:core/utils/app_logger.dart';
+import 'package:dio/dio.dart';
 import 'package:scribe/scribe/ai/data/model/ai_message.dart';
 import 'package:scribe/scribe/ai/domain/model/prompt_data.dart';
 import 'package:flutter/services.dart' show rootBundle;
 
 class PromptService {
   static const String _defaultAssetPath = 'packages/scribe/assets/prompts.json';
-  
-  final DioClient _dioClient;
-  
+
+  final Dio _dio;
+
   String? _promptUrl;
   PromptData? _promptData;
   Future<PromptData>? _loadingFuture;
-  
-  PromptService(this._dioClient);
+
+  PromptService(this._dio);
 
   void setPromptUrl(String? url) {
     if (_promptUrl == url) return;
@@ -62,10 +62,11 @@ class PromptService {
     log('PromptService::_fetchPromptsFromUrl: Fetching from $url');
     
     try {
-      final data = await _dioClient.get(url);
-      
-      final promptsMap = data is String 
-          ? jsonDecode(data) as Map<String, dynamic> 
+      final response = await _dio.get(url);
+      final data = response.data;
+
+      final promptsMap = data is String
+          ? jsonDecode(data) as Map<String, dynamic>
           : data as Map<String, dynamic>;
       
       return PromptData.fromJson(promptsMap);

scribe/test/scribe/ai/data/service/prompt_service_test.dart

@@ -1,54 +1,38 @@
+import 'dart:typed_data';
+
 import 'package:flutter_test/flutter_test.dart';
-import 'package:core/data/network/dio_client.dart';
 import 'package:dio/dio.dart';
 import 'package:scribe/scribe/ai/data/service/prompt_service.dart';
 import 'package:scribe/scribe/ai/domain/model/prompt_data.dart';
 import 'package:scribe/scribe/ai/data/model/ai_message.dart';
 
-class TestDioClient implements DioClient {
+class _ThrowingAdapter implements HttpClientAdapter {
   @override
-  Future<dynamic> get(String path, {Map<String, dynamic>? queryParameters, Options? options, CancelToken? cancelToken, ProgressCallback? onReceiveProgress}) {
+  Future<ResponseBody> fetch(
+    RequestOptions options,
+    Stream<Uint8List>? requestStream,
+    Future<void>? cancelFuture,
+  ) async {
     throw Exception('Not found');
   }
 
   @override
-  Future<dynamic> post(String path, {data, Map<String, dynamic>? queryParameters, Options? options, CancelToken? cancelToken, ProgressCallback? onSendProgress, ProgressCallback? onReceiveProgress, bool useJMAPHeader = true}) {
-    throw UnsupportedError('post not implemented');
-  }
-
-  @override
-  Future<dynamic> delete(String path, {data, Map<String, dynamic>? queryParameters, Options? options, CancelToken? cancelToken}) {
-    throw UnsupportedError('delete not implemented');
-  }
-
-  @override
-  Future<dynamic> put(String path, {data, Map<String, dynamic>? queryParameters, Options? options, CancelToken? cancelToken, ProgressCallback? onSendProgress, ProgressCallback? onReceiveProgress}) {
-    throw UnsupportedError('put not implemented');
-  }
-
-  @override
-  Map<String, dynamic> getHeaders() {
-    return {};
-  }
+  void close({bool force = false}) {}
 }
 
+Dio _throwingDio() => Dio()..httpClientAdapter = _ThrowingAdapter();
+
 void main() {
   setUpAll(() {
     TestWidgetsFlutterBinding.ensureInitialized();
   });
 
   group('PromptService', () {
-    late TestDioClient testDioClient;
-    
-    setUp(() {
-      testDioClient = TestDioClient();
-    });
-
     test('buildPromptByName should build prompt with input text', () async {
       // Arrange
-      final service = PromptService(testDioClient);
-      
-      // Act - this will use the real prompts.json file since the test client throws
+      final service = PromptService(_throwingDio());
+
+      // Act - this will use the real prompts.json file since the adapter throws
       final messages = await service.buildPromptByName('change-tone-casual', 'Hello, how are you?');
 
       // Assert
@@ -60,7 +44,7 @@ void main() {
 
     test('buildPromptByName should build prompt with input text and task', () async {
       // Arrange
-      final service = PromptService(testDioClient);
+      final service = PromptService(_throwingDio());
       
       // Act - this will use the real prompts.json file since the test client throws
       final messages = await service.buildPromptByName('custom-prompt-mail', 'Hello, how are you?', task: 'Make it more casual');