Use MicroKernelTrait to bootstrap application. Rewrote routes, controllers and structure of application a bit. Including use of twig.

src/Controller/IndexController.php

@@ -3,12 +3,15 @@
 namespace Krzysiej\RyobiCrawler\Controller;
 
 use Krzysiej\RyobiCrawler\Models\Product;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
 
 final class IndexController extends BaseController
 {
-    public function __invoke(): void
+    #[Route('/', name: 'app_home')]
+    public function __invoke(): Response
     {
         $products = Product::with('price')->orderByDesc('starred')->orderByDesc('created_by')->get();
-        $this->twig->display('productList.html.twig', ['products' => $products]);
+        return $this->render('productList.html.twig', ['products' => $products]);
     }
 }