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

src/Controller/ProductController.php

@@ -4,6 +4,8 @@ namespace Krzysiej\RyobiCrawler\Controller;
 
 use Illuminate\Support\ItemNotFoundException;
 use Krzysiej\RyobiCrawler\Models\Product;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
 use Twig\Error\LoaderError;
 use Twig\Error\RuntimeError;
 use Twig\Error\SyntaxError;
@@ -15,7 +17,8 @@ final class ProductController extends BaseController
      * @throws RuntimeError
      * @throws LoaderError
      */
-    public function __invoke(int $productId): void
+    #[Route('/product/{productId<\d+>}', name: 'app_product')]
+    public function __invoke(int $productId): Response
     {
         $product = Product::with([
             'price' => fn($query) => $query->orderBy('created_at', 'desc')
@@ -27,6 +30,6 @@ final class ProductController extends BaseController
 
         $priceList = $product->price()->pluck('price')->implode(',');
         $priceDates = $product->price()->pluck('created_at')->map(fn($date) => $date->format('Y-m-d'))->implode("','");
-        $this->twig->display('product.html.twig', ['product' => $product, 'price_list' => $priceList, 'price_dates' => $priceDates]);
+        return $this->render('product.html.twig', ['product' => $product, 'price_list' => $priceList, 'price_dates' => $priceDates]);
     }
 }