feat(roles): add admin store roles page, permission i18n, and menu integration

- Add admin store roles page with merchant→store cascading for superadmin
  and store-only selection for platform admin
- Add permission catalog API with translated labels/descriptions (en/fr/de/lb)
- Add permission translations to all 15 module locale files (60 files total)
- Add info icon tooltips for permission descriptions in role editor
- Add store roles menu item and admin menu item in module definition
- Fix store-selector.js URL construction bug when apiEndpoint has query params
- Add admin store roles API (CRUD + platform scoping)
- Add integration tests for admin store roles and permission catalog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/catalog/locales/en.json

@@ -46,6 +46,20 @@
         "sort_name_az": "Name: A-Z",
         "sort_name_za": "Name: Z-A"
     },
+    "permissions": {
+        "products_view": "View Products",
+        "products_view_desc": "View the product catalog",
+        "products_create": "Create Products",
+        "products_create_desc": "Add new products to the catalog",
+        "products_edit": "Edit Products",
+        "products_edit_desc": "Modify existing product details",
+        "products_delete": "Delete Products",
+        "products_delete_desc": "Remove products from the catalog",
+        "products_import": "Import Products",
+        "products_import_desc": "Bulk import products from files",
+        "products_export": "Export Products",
+        "products_export_desc": "Export product data to files"
+    },
     "messages": {
         "product_deleted_successfully": "Product deleted successfully",
         "product_created_successfully": "Product created successfully",