mattpocock-skills is now listed in Claude Code's official marketplace,
so the own-marketplace route is superseded. The queued changeset still
documented it, and changeset bodies ship verbatim into CHANGELOG.md —
the release would have published a superseded install route as its
headline.
- Rewrite .changeset/ship-as-claude-plugin.md around
`claude plugins install mattpocock-skills`.
- Add .agents/install-block.md as the single source for install
wording, so the docs pass has one true thing to copy.
- Point .agents/writing-docs.md and CLAUDE.md at it.
- Note the official listing in ADR 0002, and record that it reads
plugin.json directly and does not depend on marketplace.json.
.claude-plugin/marketplace.json is kept as a fallback for direct-repo
installs; nothing in CI or scripts references it.
Refs mattpocock/personal-wiki#250
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>