I end every project with a long interrogation session. Why did you do this? Is there a better approach you didn't consider? Do the naming conventions follow the project idioms? Justify the decision you made here, providing evidence. I disagree with your approach, etc. etc.

Doesn't matter which model wrote the code, they all make mistakes. This is the same stuff I'd do with any junior engineer's PR and it leads to better quality outcomes (something I care about and am finding hard to let go).

Fable is particularly good at having this back and forth I'm discovering.