It's fine, I suppose. It's like a puzzle, and you really need to be comfortable with banging your head against a wall trying to make work what is essentially immediately created legacy code by the LLM.
Works it (edit sp: Would it) help if the coders' prompts were available (checked in)?
If code is your documentation I assume it is hard to divine intent?
Prompts wouldn't really help, no. You'll have a high level description based on what you're being hired for then the code tells the story.