Because of the way that I use AI, I am constantly looking at the code. I usually leave it alone, if I can; even if I don't really like it.

I will, often go back, after the fact, and ask for refactors and documentation.

It works. Probably a lot slower than using agents, but I test every step, and it is a lot faster than I would do it, unassisted.

I don't think testing the product alone is good enough, because when you give it tests it has to pass it prioritizes passing them at the expense of everything else — including code quality. I've seen it pull in random variables, break semantic functions, etc.