Agent Skills: codex

This skill should be used whenever the user names codex as the actor for ANY task, regardless of verb or phrasing — "use codex" / "using codex", "ask codex", "run codex", "call codex", "have/let/tell/get codex do X", "delegate this to codex", "with/via codex", "codex cli", "codex: <task>", or bare imperatives like "codex review/fix/implement …" — or explicitly asks to delegate work to a frontier reasoning model (e.g., "have GPT-5 review this", "get the OpenAI reasoning model to design X", "ask the high-reasoning model"). Also triggers on "continue codex" / "resume the codex session" for iterative development, and on "have codex review this PR / branch / diff / my changes" for delegated code review. Do NOT trigger when codex / GPT-5 is merely a discussion topic rather than the requested actor.