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/core/locales/fr.json

@@ -76,5 +76,17 @@
         "account_settings": "Paramètres du compte",
         "profile": "Profil",
         "settings": "Paramètres"
+    },
+    "permissions": {
+        "dashboard_view": "Voir le tableau de bord",
+        "dashboard_view_desc": "Accéder au tableau de bord et à la vue d'ensemble",
+        "settings_view": "Voir les paramètres",
+        "settings_view_desc": "Voir la configuration du magasin",
+        "settings_edit": "Modifier les paramètres",
+        "settings_edit_desc": "Modifier la configuration du magasin",
+        "settings_theme": "Gérer le thème",
+        "settings_theme_desc": "Personnaliser le thème et l'apparence du magasin",
+        "settings_domains": "Gérer les domaines",
+        "settings_domains_desc": "Configurer les domaines personnalisés"
     }
 }