alt Hacker News> The model knows damn well when it's written ugly code. You can just ask it.
That's not been my experience at all, what model and prompt would you use for that? Every single one I've tried is oblivious to if a design makes sense or not unless explicitly prompted for it with constraints, future ideas and so on.
The problem is that the model doesn't know what you mean by "bad code" a priori. If you list specific issues you care about (e.g. separation of concerns, don't repeat yourself, single responsibility, prefer pure functions, etc) it's pretty good at picking them out. Humans have this problem as well, we're just more opinionated.