Phase 0: Improve ModuleEnableSettings get_queryset to filter by account

- Updated get_queryset to properly filter by account
- Ensures queryset is account-scoped before list() is called
- Prevents potential conflicts with base class behavior

backend/igny8_core/modules/system/settings_views.py

@@ -309,7 +309,16 @@ class ModuleEnableSettingsViewSet(AccountModelViewSet):
     
     def get_queryset(self):
         """Get module enable settings for current account"""
+        # Return queryset filtered by account - but list() will handle get_or_create
         queryset = super().get_queryset()
+        # Filter by account if available
+        account = getattr(self.request, 'account', None)
+        if not account:
+            user = getattr(self.request, 'user', None)
+            if user:
+                account = getattr(user, 'account', None)
+        if account:
+            queryset = queryset.filter(account=account)
         return queryset
     
     def list(self, request, *args, **kwargs):