Add a Claude Code plugin marketplace so the promoted skills can be
installed as a managed, read-only bundle (subscribe rather than fork),
alongside the existing skills.sh installer.
- Enrich .claude-plugin/plugin.json with marketplace metadata (version,
description, author, license, keywords); keep the curated promoted-only
skills array.
- Add .claude-plugin/marketplace.json making the repo its own
single-plugin marketplace (mattpocock-skills@mattpocock).
- README: document /plugin install alongside skills.sh, and the
subscribe-vs-fork tradeoff.
- CLAUDE.md: extend the promoted-set invariant to cover marketplace.json
and plugin.json/package.json version sync.
- ADR 0002: record why Claude ships now and a native Codex plugin is
deferred (Codex skills field is single-path + drops symlinks, which
can't express a curated subset of a bucketed repo without a restructure).
Verified: 'claude plugin validate . --strict' passes, and marketplace
add -> install resolves all 21 promoted skills at v1.2.0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
