My workflow with a medium sized iOS codebase is a bit like that. By the time everything works and is up to my standards, I‘ve usually taken longer, or almost as long, as if I‘d written everything manually. That’s with Opus-only Claude Code. It’s complicated stuff (structured concurrency and lots of custom AsyncSequence operators) which maybe CC just isn‘t suitable for.

Whipping up greenfield projects is almost magical, of course. But that’s not most of my work.