credit
Contributors
A skill carries the name of whoever is accountable for it, on the file and here.
who wrote what
adding one
The bar is deliberately high, and it is about evidence rather than writing. A rule has to be something a model gets wrong unprompted, that no linter catches, that most projects in its domain hit, and that a reader can check at any point in a file.
Most candidates fail one of those, and the ones that fail are more interesting than the ones that pass. CONTRIBUTING.md has the full process, and the spec has the format.