шаг 3 завершен

app/Repositories/ProductVariantRepository.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repositories;
+
+final class ProductVariantRepository extends BaseRepository
+{
+    /**
+     * @return array<int, array<string, mixed>>
+     */
+    public function publishedForProduct(int $productId): array
+    {
+        $statement = $this->pdo()->prepare(
+            'SELECT id, product_id, name, unit, package_quantity, step_quantity, price_per_unit, package_price, is_default
+             FROM product_variants
+             WHERE product_id = :product_id
+               AND is_published = 1
+               AND is_available = 1
+             ORDER BY is_default DESC, sort_order, id'
+        );
+
+        $statement->execute(['product_id' => $productId]);
+
+        return $statement->fetchAll();
+    }
+}