Does your detail plan outline exactly what to implement/ lines of code to edit? I found if I get a nice detailed plan that sonnet is good enough to implement. Did you try that before and found fable better at implementing?

Yeah. So the benefit of Fable is that it'll find gaps in the system as well. So logic errors get caught. I have a separate backend and frontend so plumbing issues are also caught by Fable.

Interesting, have you tried fable with making the strict plan though, and seeing if that catches all of logic errors ahead of time, and then just sending sonnet out to make the detailed updates? Or are you finding that by having fable implement it still catches things post detailed plan? So many tests to run and try out, trying to figure out to try out next.