It's not just a stored prompt, you can attach re-useable scripts to them to offer more determinism. ex: a script that validates that a PR follows exactly the template you want, with a max of N lines per entry.
The more determinism you have, the more consistent you can be and the more leverage you can build. (yes I understand that skill calls are non deterministic).
The more determinism you have, the more consistent you can be and the more leverage you can build. (yes I understand that skill calls are non deterministic).