You're right, there are tons of different workflows you can do. One of the more innocent ones, regardless of you opinions on vibe coding, is just using the LLM to understand the code base better. Even if I'm vibe coding something, I will often start by having the LLM construct documentation for the current code flows. It's a document that is useful to me as a human because it mostly just gives me code pointers and tells me what it does as part of the larger whole. It's useful for the LLM since it saves a ton on time and tokens in the long run.