Release Candidate: Production Release with Multi-Tenant & Onboarding Enhancements

backend/api/story_writer/utils/auth.py

@@ -8,7 +8,7 @@ def require_authenticated_user(current_user: Dict[str, Any] | None) -> str:
     Validates the current user dictionary provided by Clerk middleware and
     returns the normalized user_id. Raises HTTP 401 if authentication fails.
     """
-    if not current_user:
+    if not current_user or not isinstance(current_user, dict):
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Authentication required")
 
     user_id = str(current_user.get("id", "")).strip()