Agent Skills: github-cleanup

Orchestrates cross-machine repo hygiene + GitHub account cleanup via an audit→approve→execute process that prevents accidental deletion. FIRST sweeps every git repo across machines (local + ssh) for uncommitted/unpushed work and true ahead/behind drift, THEN audits GitHub-side — Dependabot alerts traced to unused-direct vs transitive deps, stale forks, orphaned secrets, failing workflows, plugin version-bump gaps. Triggers on 'clean up GitHub', 'audit my repos', 'uncommitted or unpushed changes', 'are my repos in sync', 'push discipline', 'Dependabot trouble', 'unused deps', 'stale forks', 'dependency audit'. Requires gh CLI (+ ssh for remote hosts). (user)