feat: enhance item attributes management by adding sort order; update related models, resources, and tests for visibility and ordering of variants

app/Domains/Catalog/Services/CatalogService.php

@@ -182,9 +182,10 @@ class CatalogService
             'bundleComponents.variant.definitions.itemAttribute.attribute',
         ]);
 
+        $visibleVariants = $catalogItem->visibleVariants();
         $selectedVariant = $variantId === null
-            ? $catalogItem->variants->first()
-            : $catalogItem->variants->firstWhere('id', $variantId);
+            ? $visibleVariants->first()
+            : $visibleVariants->firstWhere('id', $variantId);
 
         if ($variantId !== null && $selectedVariant === null) {
             throw new NotFoundHttpException('Variant not found for catalog item.');
@@ -227,6 +228,7 @@ class CatalogService
                 'attachments',
                 'inventory',
                 'validityTime',
+                'itemAttributes.attribute',
                 'variants.inventory',
                 'variants.attachments',
                 'variants.eventDate',
@@ -261,6 +263,7 @@ class CatalogService
                 'attachments',
                 'inventory',
                 'validityTime',
+                'itemAttributes.attribute',
                 'variants.inventory',
                 'variants.attachments',
                 'variants.eventDate',