Have you ever shipped a refactor that looked smaller than a coffee run and then spent two days proving Python can lie? I asked a free model to lift a handful of dataclasses out of a growing worker module. It did the extraction cleanly enough, except it named the new file types.py , which is a loaded word in this language. Local pytest stayed green. The same tree on a free server started failing on an import that I did not even touch. I was comparing those two environments with MonkeyCode bec...