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/routes/api/admin_stores.py

@@ -86,6 +86,7 @@ def get_all_stores_admin(
     search: str | None = Query(None, description="Search by name or store code"),
     is_active: bool | None = Query(None),
     is_verified: bool | None = Query(None),
+    merchant_id: int | None = Query(None, description="Filter by merchant ID"),
     db: Session = Depends(get_db),
     current_admin: UserContext = Depends(get_current_admin_api),
 ):
@@ -97,6 +98,7 @@ def get_all_stores_admin(
         search=search,
         is_active=is_active,
         is_verified=is_verified,
+        merchant_id=merchant_id,
     )
     return StoreListResponse(stores=stores, total=total, skip=skip, limit=limit)