Allow the Claude and Codex marketplace tests to tolerate short-lived filesystem propagation delays while plugin skill directories are being rebuilt during release sync.
Make the Codex marketplace release test follow package.json instead of pinning the previous release version, so scripted release prepares can bump plugin manifests safely.
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.
