fix foreign keys

backend/app/routers/houses.py

@@ -23,7 +23,7 @@ async def create_house(body: HouseCreateRequest, auth: Annotated[AuthContext, De
         await owner_repository.save(new_owner)
 
     house = House(
-        owner_id=auth.user.id,
+        owner_user_id=auth.user.id,
         address=body.address,
         city=body.city,
         country=body.country,