f540d5605f
knowledge-work-plugins is a curated surface, but unlike claude-plugins-official it had no gate on external pull requests — so the open-PR queue had accumulated ~87 external contributions (README edits, "fixes" to first-party plugins, unsolicited new community plugins) that we do not accept here. Ports the established -official mechanism verbatim: - close-external-prs.yml — on PR opened, if the author is not an org member (write/admin) and the PR is not an in-scope contribution, posts the standard redirect comment (submit via clau.de/plugin-directory-submission) and closes it. - external-pr-scope-guard.yml — advisory (NOT required) check surfacing the in-scope carve-out for reviewers. - .github/scripts/external-pr-scope.js — shared trust-the-source-repo logic (MARKETPLACE = .claude-plugin/marketplace.json, matches this repo). Carve-out (verbatim from -official): a non-member PR may stay open only if it ADDS marketplace.json entries whose source repo already backs a live plugin here, and changes nothing else. Members + the bump bot are exempt. Kill switch: repo var DISABLE_EXTERNAL_PR_CHECK=true. Prospective only (fires on `opened`) — does not touch the existing open queue. Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>