Plugin discovery and loading — .enact-plugin/ manifest, namespaced commands and skills.
Plugins live in ~/.enact/plugins/ and .enact/plugins/. Each plugin has:
- .enact-plugin/plugin.json (name, version, author, description)
- commands/ (Markdown slash commands, namespaced as plugin-name:command-name)
- skills/ (SKILL.md files, namespaced as plugin-name:skill-name)
- hooks/hooks.yaml (optional)