refactor: remove unused app settings packages

- Removed app settings dependencies
- Cleaned up middleware

Author: fulleni

pubspec.yaml

@@ -9,15 +9,6 @@ environment:
 dependencies:
   dart_frog: ^1.1.0
   dart_jsonwebtoken: ^3.2.0
-  ht_app_settings_client:
-    git:
-      url: https://github.com/headlines-toolkit/ht-app-settings-client.git
-  ht_app_settings_inmemory:
-    git:
-      url: https://github.com/headlines-toolkit/ht-app-settings-inmemory.git
-  ht_app_settings_repository:
-    git:
-      url: https://github.com/headlines-toolkit/ht-app-settings-repository.git
   ht_data_client:
     git:
       url: https://github.com/headlines-toolkit/ht-data-client.git

routes/_middleware.dart

@@ -12,8 +12,6 @@ import 'package:ht_api/src/services/jwt_auth_token_service.dart';
 import 'package:ht_api/src/services/token_blacklist_service.dart';
 import 'package:ht_api/src/services/user_preference_limit_service.dart'; // Import UserPreferenceLimitService interface
 import 'package:ht_api/src/services/verification_code_storage_service.dart';
-import 'package:ht_app_settings_client/ht_app_settings_client.dart';
-import 'package:ht_app_settings_inmemory/ht_app_settings_inmemory.dart';
 import 'package:ht_data_inmemory/ht_data_inmemory.dart';
 import 'package:ht_data_repository/ht_data_repository.dart';
 import 'package:ht_email_inmemory/ht_email_inmemory.dart';
@@ -210,7 +208,6 @@ Handler middleware(Handler handler) {
       _createUserContentPreferencesRepository(); // New
   final appConfigRepository = _createAppConfigRepository(); // New
 
-  final settingsClientImpl = HtAppSettingsInMemory();
   const uuid = Uuid();
 
   // --- Auth Dependencies ---
@@ -311,8 +308,6 @@ Handler middleware(Handler handler) {
           (_) => userRepository,
         ),
       ) // Used by Auth services
-      // Provide the HtAppSettingsClient interface globally
-      .use(provider<HtAppSettingsClient>((_) => settingsClientImpl))
       .use(
         provider<HtEmailRepository>(
           (_) => emailRepository,