Author a new, well-formed Codex skill, custom agent, hook, or plugin artifact from a one-line intent. Decides artifact type and placement, then writes a correct SKILL.md, Codex agent TOML, hook, or plugin scaffold with trigger-rich descriptions and guardrails. Global and project-agnostic. Trigger when the user says "new skill", "new-skill", "create a skill", "make an agent", "scaffold a skill/agent/hook", "author a Codex skill", or "create a Codex command".
