Ask HN: What is the highest-quality AI-generated project you have seen?

Over the past few months, I’ve been trying to use AI to write as much code as possible. But once a project reaches a certain scale, the whole codebase becomes as hard to read as a ball of yarn that’s been sitting under a sofa for ten years.

If vibe coding is really as good as it’s advertised to be, are there any projects worth studying for human programmers?