For non-Codex agent harnesses such as Claude Code or OpenCode only. Never invoke this skill from Codex itself. Delegate a coding or implementation task from another harness to a nested Codex CLI agent through unattended, workspace-scoped `codex exec`. Use when the user explicitly asks a non-Codex harness to use, invoke, run, or delegate to a Codex subagent, or asks it to implement or change something using Codex. Do not use merely because a task involves code; the trigger must specifically involve Codex delegation or implementation using Codex.
