v0.8.1

Fixed

• Codex install docs. The .agents/plugins/marketplace.json catalog uses a repo-root source ("path": "./"), which Codex's marketplace resolver does not accept (it expects the plugin nested in a subdirectory of the marketplace root). Stopped advertising codex plugin marketplace add as an install path for this repo and documented the supported path - clone the repo and let AGENTS.md auto-load - across README, docs/user-guide.md, docs/packaging.md, and contexts/codex.md. The plugin command, where shown, is now qualified: codex plugin add falsegreen-skill@falsegreen. Raised by the automated Codex review on #149.