Fix auth route response injection crash

backend/app/api/routes_auth.py

@@ -26,13 +26,12 @@ from app.services.auth_login_throttle import (
     clear_login_throttle,
     record_failed_login_attempt,
 )
-from app.services.authentication import authenticate_user, issue_user_session, revoke_auth_session
 
 try:
     from fastapi import Response
 except (ImportError, AttributeError):
     from fastapi.responses import Response
-
+from app.services.authentication import authenticate_user, issue_user_session, revoke_auth_session
 
 router = APIRouter(prefix="/auth", tags=["auth"])
 logger = logging.getLogger(__name__)
@@ -132,7 +131,7 @@ def _clear_session_cookies(response: Response) -> None:
 def login(
     payload: AuthLoginRequest,
     request: Request,
-    response: Response | None = None,
+    response: Response,
     session: Session = Depends(get_session),
 ) -> AuthLoginResponse:
     """Authenticates credentials with throttle protection and returns issued session metadata."""
@@ -241,7 +240,7 @@ def me(context: AuthContext = Depends(require_user_or_admin)) -> AuthSessionResp
 
 @router.post("/logout", response_model=AuthLogoutResponse)
 def logout(
-    response: Response | None = None,
+    response: Response,
     context: AuthContext = Depends(require_user_or_admin),
     session: Session = Depends(get_session),
 ) -> AuthLogoutResponse: