I'm interested to find what your workflows look like these days.
To answer your question, the actual review I do, is when the agent asks me questions. I tell it to resume a task, it asks questions, I answer them. If those questions are off-the-rails, I stop, pop the conceptual stack, and come at the whole thing from a different angle.
I'm basically trusting the model to do a good job, and fixing forward, always annealing the project toward what I want. And the rejection criteria is when the questions that it's asking are _questions I don't care about_.