> To put it in simpler terms, the point is to write down high level specs in a way that coding assistants can parse them and implement them.

I have never seen a non-trivial product that didn't have the spec modified during development due to finding rare business edge cases when actual implementation happened.

It's a fantasy to think that all you need to do is give an agent a spec; every team I have been on over the last 30 years have needed to refine the spec while developing.

That's the whole reason for Agile in the first place.