шаг 4 завершен

public/admin/products.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Controllers\Admin\ProductAdminController;
+
+require_once dirname(__DIR__, 2) . '/app/bootstrap.php';
+
+(new ProductAdminController())->index();