refactor(api): update imports and exceptions handling

- Update import paths to use core package and local paths
- Replace HtHttpException with HttpException for broader error handling
- Update error mapping and logging to use new exception types
- Remove unused imports and adjust package references

Author: fulleni

lib/src/middlewares/authentication_middleware.dart

@@ -1,6 +1,6 @@
+import 'package:core/core.dart';
 import 'package:dart_frog/dart_frog.dart';
-import 'package:ht_api/src/services/auth_token_service.dart';
-import 'package:ht_shared/ht_shared.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/services/auth_token_service.dart';
 import 'package:logging/logging.dart';
 
 final _log = Logger('AuthMiddleware');
@@ -58,12 +58,12 @@ Middleware authenticationProvider() {
             // using this middleware strictly require a valid token.
             // However, providing null allows routes to handle optional auth.
           }
-        } on HtHttpException catch (e) {
+        } on HttpException catch (e) {
           // Log token validation errors from the service
           _log.warning('Token validation failed.', e);
           // Let the error propagate if needed, or handle specific cases.
           // For now, we treat validation errors as resulting in no user.
-          user = null; // Keep user null if HtHttpException occurred
+          user = null; // Keep user null if HttpException occurred
         } catch (e, s) {
           // Catch unexpected errors during validation
           _log.severe('Unexpected error during token validation.', e, s);

lib/src/middlewares/authorization_middleware.dart

@@ -1,7 +1,7 @@
+import 'package:core/core.dart';
 import 'package:dart_frog/dart_frog.dart';
-import 'package:ht_api/src/rbac/permission_service.dart';
-import 'package:ht_api/src/registry/model_registry.dart';
-import 'package:ht_shared/ht_shared.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/rbac/permission_service.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/registry/model_registry.dart';
 import 'package:logging/logging.dart';
 
 final _log = Logger('AuthorizationMiddleware');

lib/src/middlewares/error_handler.dart

@@ -3,9 +3,9 @@
 
 import 'dart:io';
 
+import 'package:core/core.dart';
 import 'package:dart_frog/dart_frog.dart';
-import 'package:ht_api/src/config/environment_config.dart';
-import 'package:ht_shared/ht_shared.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/config/environment_config.dart';
 import 'package:json_annotation/json_annotation.dart';
 import 'package:logging/logging.dart';
 
@@ -20,10 +20,10 @@ Middleware errorHandler() {
         // Attempt to execute the request handler
         final response = await handler(context);
         return response;
-      } on HtHttpException catch (e, stackTrace) {
-        // Handle specific HtHttpExceptions from the client/repository layers
+      } on HttpException catch (e, stackTrace) {
+        // Handle specific HttpExceptions from the client/repository layers
         final statusCode = _mapExceptionToStatusCode(e);
-        _log.warning('HtHttpException Caught', e, stackTrace);
+        _log.warning('HttpException Caught', e, stackTrace);
         return _jsonErrorResponse(
           statusCode: statusCode,
           exception: e,
@@ -64,8 +64,8 @@ Middleware errorHandler() {
   };
 }
 
-/// Maps HtHttpException subtypes to appropriate HTTP status codes.
-int _mapExceptionToStatusCode(HtHttpException exception) {
+/// Maps HttpException subtypes to appropriate HTTP status codes.
+int _mapExceptionToStatusCode(HttpException exception) {
   return switch (exception) {
     InvalidInputException() => HttpStatus.badRequest, // 400
     AuthenticationException() => HttpStatus.unauthorized, // 401
@@ -82,8 +82,8 @@ int _mapExceptionToStatusCode(HtHttpException exception) {
   };
 }
 
-/// Maps HtHttpException subtypes to consistent error code strings.
-String _mapExceptionToCodeString(HtHttpException exception) {
+/// Maps HttpException subtypes to consistent error code strings.
+String _mapExceptionToCodeString(HttpException exception) {
   return switch (exception) {
     InvalidInputException() => 'invalidInput',
     AuthenticationException() => 'authenticationFailed',
@@ -107,7 +107,7 @@ String _mapExceptionToCodeString(HtHttpException exception) {
 /// application to read the error message body.
 Response _jsonErrorResponse({
   required int statusCode,
-  required HtHttpException exception,
+  required HttpException exception,
   required RequestContext context,
 }) {
   final errorCode = _mapExceptionToCodeString(exception);

lib/src/middlewares/ownership_check_middleware.dart

@@ -1,8 +1,8 @@
+import 'package:core/core.dart';
 import 'package:dart_frog/dart_frog.dart';
-import 'package:ht_api/src/rbac/permission_service.dart';
-import 'package:ht_api/src/registry/model_registry.dart';
-import 'package:ht_data_repository/ht_data_repository.dart';
-import 'package:ht_shared/ht_shared.dart';
+import 'package:data_repository/data_repository.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/rbac/permission_service.dart';
+import 'package:flutter_news_app_api_server_full_source_code/src/registry/model_registry.dart';
 
 /// A wrapper class to provide a fetched item into the request context.
 ///
@@ -72,13 +72,13 @@ Middleware ownershipCheckMiddleware() {
 
       switch (modelName) {
         case 'user':
-          final repo = context.read<HtDataRepository<User>>();
+          final repo = context.read<DataRepository<User>>();
           item = await repo.read(id: id, userId: userIdForRepoCall);
         case 'user_app_settings':
-          final repo = context.read<HtDataRepository<UserAppSettings>>();
+          final repo = context.read<DataRepository<UserAppSettings>>();
           item = await repo.read(id: id, userId: userIdForRepoCall);
         case 'user_content_preferences':
-          final repo = context.read<HtDataRepository<UserContentPreferences>>();
+          final repo = context.read<DataRepository<UserContentPreferences>>();
           item = await repo.read(id: id, userId: userIdForRepoCall);
         default:
           throw OperationFailedException(