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/tenancy/locales/lb.json

@@ -112,5 +112,37 @@
             "name": "Audit-Protokoll",
             "description": "All Benotzeraktiounen an Ännerungen nospueren"
         }
+    },
+    "permissions": {
+        "category": {
+            "dashboard": "Dashboard",
+            "products": "Produiten",
+            "stock": "Inventar",
+            "orders": "Bestellungen",
+            "customers": "Clienten",
+            "marketing": "Marketing",
+            "reports": "Berichter",
+            "settings": "Astellungen",
+            "team": "Team",
+            "imports": "Importatiounen",
+            "general": "Allgemeng",
+            "analytics": "Analytik",
+            "billing": "Ofrechnung",
+            "cart": "Kuerf",
+            "checkout": "Keess",
+            "cms": "Inhalter",
+            "loyalty": "Treiheet",
+            "marketplace": "Marché",
+            "messaging": "Messagen",
+            "payments": "Bezuelungen"
+        },
+        "team_view": "Team kucken",
+        "team_view_desc": "Team-Memberen an hir Rollen kucken",
+        "team_invite": "Memberen invitéieren",
+        "team_invite_desc": "Nei Memberen an d'Team invitéieren",
+        "team_edit": "Memberen änneren",
+        "team_edit_desc": "Rollen a Rechter vun de Memberen änneren",
+        "team_remove": "Memberen ewechhuelen",
+        "team_remove_desc": "Memberen aus dem Team ewechhuelen"
     }
 }