> In my view, the best code review is structural. It brings in context from parts of the codebase that the diff didn’t mention.

That may be true for AI code.

But it would be pretty terrible for human-written code to bring this up after the code is written, wasting hours/days effort for lack of a little up-front communication on design.

AI makes routine code generation cheap -- only seconds/minutes and cents are being wasted -- but you essentially still need that design session.