Capture the plugin manifest version bumps that release:prepare generated for 9.0.0 and update the release staging step so Claude and Codex plugin manifests are included automatically in future release commits.
Document the new Claude Code and Codex plugin distributions and explain how root plugins, bundle plugins, and plugin-safe filtering relate to the full library install.\n\nSync the catalog, plugin compatibility artifacts, and generated plugin-safe subsets so main stays consistent before the v9.0.0 release flow.
Add Codex marketplace metadata and a repo-local plugin scaffold so the repository can be installed as a Codex plugin without duplicating the skills catalog.
Document the new integration path and cover it with a regression test to keep the marketplace entry and plugin manifest in sync.
