NEW: New folder to config CONTAINER DI.

config/config.php

@@ -0,0 +1,9 @@
+<?php
+use Core\Router;
+use Psr\Container\ContainerInterface;
+
+return [
+    Router::class => function (ContainerInterface $container) {
+        return new Router($container); // ou passe dependências se houver
+    }
+];