audit-registry-listing — The registry is the landing page

Degree of freedom: MIXED. What the first screen should say [HIGH freedom]; the metadata checklist and the tarball check [LOW freedom — run exactly].

Read-only. For a package, plugin, skill pack, or CLI, discovery happens in a registry and the README's first ten lines are the hero. This skill checks every surface a stranger sees before the repo, reports gaps with evidence, and hands fixes to the owning skills.