I've found that if you look over the code and notice and describe a specific problem and solution, the agent can apply a refactoring for you well enough; and that's often faster than editing the file yourself even if you already know exactly what to do.

The idea of setting up an agentic loop to review code and propose and implement refactorings still seems pretty awful to me, though, yeah. Maybe cut that off at the first green-bar revision, and then apply some actual taste and judgement.