feat(catalog): exclude out-of-stock items and update variant visibility logic

app/Domains/Catalog/Services/CatalogService.php

@@ -205,6 +205,13 @@ class CatalogService
         ]);
 
         $visibleVariants = $catalogItem->visibleVariants();
+        if ($catalogItem->type === CatalogItemType::Standard
+            && ($catalogItem->inventory_id !== null || $catalogItem->variants->isNotEmpty())
+            && ! $catalogItem->isAvailable()) {
+            throw new NotFoundHttpException('Catalog item is out of stock.');
+        }
+
+        $catalogItem->setRelation('variants', $visibleVariants);
         $selectedVariant = $variantId === null
             ? $visibleVariants->first()
             : $visibleVariants->firstWhere('id', $variantId);
@@ -231,6 +238,7 @@ class CatalogService
 
         $paginator = CatalogItem::query()
             ->where('tenant_code', $tenant->codigo)
+            ->whereAvailable()
             ->where(function (Builder $query) use ($containsPattern): void {
                 $query
                     ->whereRaw('LOWER(nombre) LIKE ?', [$containsPattern])
@@ -280,6 +288,7 @@ class CatalogService
         return CatalogItem::query()
             ->where('tenant_code', $tenant->codigo)
             ->where('category_id', $category->id)
+            ->whereAvailable()
             ->with([
                 'attachments',
                 'inventory',