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/inventory/locales/de.json

@@ -42,5 +42,13 @@
         "products_inventory": "Produkte & Inventar",
         "products": "Produkte",
         "inventory": "Inventar"
+    },
+    "permissions": {
+        "stock_view": "Inventar anzeigen",
+        "stock_view_desc": "Bestände und Inventardaten anzeigen",
+        "stock_edit": "Inventar bearbeiten",
+        "stock_edit_desc": "Bestände und Mengen anpassen",
+        "stock_transfer": "Bestand transferieren",
+        "stock_transfer_desc": "Bestand zwischen Standorten transferieren"
     }
 }

app/modules/inventory/locales/en.json

@@ -12,6 +12,14 @@
         "low_stock_alert": "Low Stock Alert",
         "out_of_stock_alert": "Out of Stock Alert"
     },
+    "permissions": {
+        "stock_view": "View Inventory",
+        "stock_view_desc": "View stock levels and inventory data",
+        "stock_edit": "Edit Inventory",
+        "stock_edit_desc": "Adjust stock levels and quantities",
+        "stock_transfer": "Transfer Stock",
+        "stock_transfer_desc": "Transfer stock between locations"
+    },
     "messages": {
         "stock_adjusted_successfully": "Stock adjusted successfully",
         "quantity_set_successfully": "Quantity set successfully",

app/modules/inventory/locales/fr.json

@@ -42,5 +42,13 @@
         "products_inventory": "Produits et Inventaire",
         "products": "Produits",
         "inventory": "Inventaire"
+    },
+    "permissions": {
+        "stock_view": "Voir l'inventaire",
+        "stock_view_desc": "Voir les niveaux de stock et les données d'inventaire",
+        "stock_edit": "Modifier l'inventaire",
+        "stock_edit_desc": "Ajuster les niveaux de stock et les quantités",
+        "stock_transfer": "Transférer le stock",
+        "stock_transfer_desc": "Transférer le stock entre les emplacements"
     }
 }

app/modules/inventory/locales/lb.json

@@ -42,5 +42,13 @@
         "products_inventory": "Produkter & Inventar",
         "products": "Produkter",
         "inventory": "Inventar"
+    },
+    "permissions": {
+        "stock_view": "Inventar kucken",
+        "stock_view_desc": "Bestandsniveauen an Inventardaten kucken",
+        "stock_edit": "Inventar änneren",
+        "stock_edit_desc": "Bestandsniveauen a Quantitéiten upassen",
+        "stock_transfer": "Bestand transferéieren",
+        "stock_transfer_desc": "Bestand tëschent Standuerten transferéieren"
     }
 }