refactor: Remove authentication middleware usage

- Temporarily disable auth
- Simplify request handling

Author: fulleni

routes/_middleware.dart

@@ -6,7 +6,7 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:dart_frog/dart_frog.dart';
-import 'package:ht_api/src/middlewares/authentication_middleware.dart';
+// import 'package:ht_api/src/middlewares/authentication_middleware.dart';
 import 'package:ht_api/src/middlewares/error_handler.dart';
 import 'package:ht_api/src/registry/model_registry.dart';
 import 'package:ht_api/src/services/auth_service.dart';
@@ -240,7 +240,7 @@ Handler middleware(Handler handler) {
       // --- Core Middleware ---
       .use(requestLogger()) // Basic request logging
       // Apply authenticationProvider to make User? available downstream
-      .use(authenticationProvider())
+      // .use(authenticationProvider())
       // Error handler should generally be last to catch all upstream errors
       .use(errorHandler());
 }