refactor: complete JS i18n migration for confirm dialogs and toast messages

Migrate 34 hardcoded user-facing strings to use I18n.t() for translation:

- CMS: media file operations (5 strings)
- Marketplace: Letzshop integration (16 strings)
- Messaging: notifications, messages, email templates (5 strings)
- Tenancy: platform modules, menu config, theme (5 strings)
- Core: menu config, settings, storefront cart (5 strings)
- Catalog: product creation (3 strings)
- Utils: clipboard operations (2 strings)

Added confirmations and messages keys to module locale files.
Added I18n.loadModule() calls to JS files that were missing them.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/catalog/locales/en.json

@@ -1,49 +1,82 @@
 {
-  "title": "Product Catalog",
-  "description": "Product catalog management for vendors",
   "products": {
     "title": "Products",
-    "subtitle": "Manage your product catalog",
-    "create": "Create Product",
-    "edit": "Edit Product",
-    "delete": "Delete Product",
-    "empty": "No products found",
-    "empty_search": "No products match your search"
-  },
-  "product": {
-    "name": "Product Name",
-    "description": "Description",
+    "product": "Product",
+    "add_product": "Add Product",
+    "edit_product": "Edit Product",
+    "delete_product": "Delete Product",
+    "product_name": "Product Name",
+    "product_code": "Product Code",
     "sku": "SKU",
     "price": "Price",
+    "sale_price": "Sale Price",
+    "cost": "Cost",
     "stock": "Stock",
-    "status": "Status",
-    "active": "Active",
-    "inactive": "Inactive"
-  },
-  "media": {
-    "title": "Product Media",
-    "upload": "Upload Image",
-    "delete": "Delete Image",
-    "primary": "Set as Primary",
-    "error": "Media upload failed"
-  },
-  "validation": {
-    "name_required": "Product name is required",
-    "price_required": "Price is required",
-    "invalid_sku": "Invalid SKU format",
-    "duplicate_sku": "SKU already exists"
+    "in_stock": "In Stock",
+    "out_of_stock": "Out of Stock",
+    "low_stock": "Low Stock",
+    "availability": "Availability",
+    "available": "Available",
+    "unavailable": "Unavailable",
+    "brand": "Brand",
+    "category": "Category",
+    "categories": "Categories",
+    "image": "Image",
+    "images": "Images",
+    "main_image": "Main Image",
+    "gallery": "Gallery",
+    "weight": "Weight",
+    "dimensions": "Dimensions",
+    "color": "Color",
+    "size": "Size",
+    "material": "Material",
+    "condition": "Condition",
+    "new": "New",
+    "used": "Used",
+    "refurbished": "Refurbished",
+    "no_products": "No products found",
+    "search_products": "Search products...",
+    "filter_by_category": "Filter by category",
+    "filter_by_status": "Filter by status",
+    "sort_by": "Sort by",
+    "sort_newest": "Newest",
+    "sort_oldest": "Oldest",
+    "sort_price_low": "Price: Low to High",
+    "sort_price_high": "Price: High to Low",
+    "sort_name_az": "Name: A-Z",
+    "sort_name_za": "Name: Z-A"
   },
   "messages": {
-    "created": "Product created successfully",
-    "updated": "Product updated successfully",
-    "deleted": "Product deleted successfully",
-    "not_found": "Product not found",
-    "cannot_delete": "Cannot delete product",
-    "error_loading": "Error loading products"
-  },
-  "filters": {
-    "all_products": "All Products",
-    "active_only": "Active Only",
-    "search_placeholder": "Search products..."
+    "product_deleted_successfully": "Product deleted successfully",
+    "product_created_successfully": "Product created successfully",
+    "product_updated_successfully": "Product updated successfully",
+    "product_activated": "Product activated",
+    "product_deactivated": "Product deactivated",
+    "product_marked_as_featured": "Product marked as featured",
+    "product_unmarked_as_featured": "Product unmarked as featured",
+    "products_activated": "{count} product(s) activated",
+    "products_deactivated": "{count} product(s) deactivated",
+    "products_marked_as_featured": "{count} product(s) marked as featured",
+    "products_unmarked_as_featured": "{count} product(s) unmarked as featured",
+    "products_deleted": "{count} product(s) deleted",
+    "failed_to_save_product": "Failed to save product",
+    "failed_to_create_product": "Failed to create product",
+    "failed_to_update_product": "Failed to update product",
+    "failed_to_delete_product": "Failed to delete product",
+    "failed_to_load_products": "Failed to load products",
+    "failed_to_activate_products": "Failed to activate products",
+    "failed_to_deactivate_products": "Failed to deactivate products",
+    "failed_to_upload_image": "Failed to upload image",
+    "product_removed_from_vendor_catalog": "Product removed from vendor catalog.",
+    "please_fill_in_all_required_fields": "Please fill in all required fields",
+    "failed_to_load_media_library": "Failed to load media library",
+    "no_vendor_associated_with_this_product": "No vendor associated with this product",
+    "please_select_an_image_file": "Please select an image file",
+    "image_must_be_less_than_10mb": "Image must be less than 10MB",
+    "image_uploaded_successfully": "Image uploaded successfully",
+    "please_select_a_vendor": "Please select a vendor",
+    "please_enter_a_product_title_english": "Please enter a product title (English)",
+    "please_select_a_vendor_first": "Please select a vendor first",
+    "title_and_price_required": "Title and price are required"
   }
 }

app/modules/catalog/static/vendor/js/product-create.js

@@ -44,6 +44,9 @@ function vendorProductCreate() {
         },
 
         async init() {
+            // Load i18n translations
+            await I18n.loadModule('catalog');
+
             // Guard against duplicate initialization
             if (window._vendorProductCreateInitialized) return;
             window._vendorProductCreateInitialized = true;
@@ -66,7 +69,7 @@ function vendorProductCreate() {
 
         async createProduct() {
             if (!this.form.title || !this.form.price) {
-                this.showToast('Title and price are required', 'error');
+                Utils.showToast(I18n.t('catalog.messages.title_and_price_required'), 'error');
                 return;
             }
 
@@ -93,7 +96,7 @@ function vendorProductCreate() {
                 }
 
                 vendorProductCreateLog.info('Product created:', response.data);
-                this.showToast('Product created successfully', 'success');
+                Utils.showToast(I18n.t('catalog.messages.product_created_successfully'), 'success');
 
                 // Navigate back to products list
                 setTimeout(() => {
@@ -102,8 +105,8 @@ function vendorProductCreate() {
 
             } catch (err) {
                 vendorProductCreateLog.error('Failed to create product:', err);
-                this.error = err.message || 'Failed to create product';
-                this.showToast(this.error, 'error');
+                this.error = err.message || I18n.t('catalog.messages.failed_to_create_product');
+                Utils.showToast(this.error, 'error');
             } finally {
                 this.saving = false;
             }