> I really don't know how to fill the minutes that AI takes to write code.
The AI should be spending most of its time helping you spec out new revisions to the codebase, the code-writing time is just the last step and if you've planned the work in depth, you'll understand what the AI is trying to do (and be able to stop and revise if anything is going off the rails). This is a healthier approach than "just spec out something else in the meantime" IMHO, but of course that happens too.
"just spec out something else in the meantime"
Yeah, I've learned that if I do too much of that I'll spend more time catching up in terms of consolidating gains through review of code and functionality. That's just me, people are clearly developing a few different and not "wrong" ways of going about things.