fix(backend): adressed copilot review

7project/backend/app/app.py

@@ -56,15 +56,14 @@ async def auth_guard(request: Request, call_next):
     # Enforce revoked/expired JWTs are rejected globally
     token = extract_bearer_token(request)
     if token:
+        from fastapi import Response, status as _status
         # Deny if token is revoked
         if is_token_revoked(token):
-            from fastapi import Response, status as _status
             return Response(status_code=_status.HTTP_401_UNAUTHORIZED)
         # Deny if token is expired or invalid
         try:
             decode_and_verify_jwt(token, SECRET)
         except Exception:
-            from fastapi import Response, status as _status
             return Response(status_code=_status.HTTP_401_UNAUTHORIZED)
     return await call_next(request)