docs: Comprehensive Documentation Update

core/App.php

@@ -7,21 +7,6 @@
 
 class App
 {
-    protected static Container $container;
-
-    public function __construct(Container $container)
-    {
-        static::$container = $container;
-    }
-
-    /**
-     * Get the service container.
-     */
-    public static function container(): Container
-    {
-        return static::$container;
-    }
-
     /**
      * The shared service container instance.
      * @var Container

core/Http/Response.php

@@ -4,17 +4,6 @@
 
 class Response
 {
-    protected mixed $content;
-    protected int $statusCode;
-    protected array $headers;
-
-    public function __construct(mixed $content = '', int $statusCode = 200, array $headers = [])
-    {
-        $this->content = $content;
-        $this->statusCode = $statusCode;
-        $this->headers = $headers;
-    }
-
     /**
      * The response content.
      * @var mixed

docs/GETTING_STARTED.md

@@ -144,17 +144,16 @@ class PostController extends Controller
     }
 
     // Lưu dữ liệu từ form tạo mới
-    public function store(Request $request): void
+    public function store(Request $request): Response
     {
         $post = new Post();
         $post->create([
             'title' => $request->get('title'),
             'content' => $request->get('content'),
         ]);
 
-        // Chuyển hướng về trang danh sách
-        header('Location: /posts');
-        exit();
+        // Trả về một Response để chuyển hướng về trang danh sách
+        return Response::create('', 302, ['Location' => '/posts']);
     }
 
     // ... (Các phương thức edit, update, destroy sẽ tương tự)