What purpose would that serve? You have the source code. In the old days we’d just share tarballs. No provenance. It’s fine. You have the unit of legible modifiability.

In the early days of AI coding someone did publish the prompts and it was utterly useless to me https://github.com/i365dev/LetterDrop

The source code itself is a sufficient prompt.

There have definitely been times when I've cloned repos that were vibed, pointed my own agent at it, and then hacked up whatever changes I've wanted. I don't think there's been a single time that a lack of prompts has caused any issues, but there have been at least a few times where stuff like AGENTS.md checked into the repo has caused hiccups from them encoding stuff that conflicts with how I want things done.