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/loyalty/locales/lb.json

@@ -80,5 +80,15 @@
         "statistics": "Statistiken",
         "overview": "Iwwersiicht",
         "settings": "Astellungen"
+    },
+    "permissions": {
+        "view_programs": "Programmer kucken",
+        "view_programs_desc": "Treiheet-Programmer an Detailer kucken",
+        "manage_programs": "Programmer verwalten",
+        "manage_programs_desc": "Treiheet-Programmer erstellen a konfiguréieren",
+        "view_rewards": "Beloununge kucken",
+        "view_rewards_desc": "Belounungen an Aléisunge kucken",
+        "manage_rewards": "Beloununge verwalten",
+        "manage_rewards_desc": "Treiheet-Belounungen erstellen a verwalten"
     }
 }