alt Hacker NewsWell, interesting idea, but can you trust that it generates it properly? Because if it doesn't, then your understanding of the code will be incorrect, even worse than lack of knowledge; and if you do need to check all the things it has generated for you, as a description - doesn't it defeat the purpose of the tool?
Arguably, if you vibe code you don't really care about the code, thus even less about the diagram. So you'll vibe something, get a diagram of something to show your boss, and you can move on.