feat(F-108): completed feature

project/apps/admin/src/app/(dashboard)/inventory/page.tsx

@@ -63,8 +63,12 @@ export default function InventoryPage() {
       const variantRows: VariantRow[] = [];
 
       for (const product of products ?? []) {
+        // Modelo sin variantes: cada producto gestiona su stock/EAN a nivel de
+        // producto usando su única variante interna (F-108).
         const { items: variants } = await productsApi.getVariants(product.id);
-        for (const variant of variants ?? []) {
+        const variant = variants?.[0];
+        if (!variant) continue;
+        {
           variantRows.push({
             productId: product.id,
             productName: product.name,