Repository hygiene and PR readiness gate. Invoked by oc-git-ops before every PR and after oc-docs-forge generates the PR documentation packet. Use for /oc-repo, /oc-repo audit, /oc-repo verify, "repo hygiene", "clean this repo", "is this PR ready", "check generated files", "catalog drift", "plugin/cache drift", ".gitignore policy", orphaned docs/files, stale generated artifacts, source-vs-doc mismatch, or any repository cleanliness question.
