install-codex-deepseek-subagent
Use when the user asks to install, update, or repair the DeepSeek V4 Flash custom subagent for Codex — the standalone agent TOML, the use-v4-flash-worker handoff skill, and the SubagentStart plaintext-handoff Hook. Fully offline; the payload is vendored in this skill and installed by a bundled script, no GitHub access needed. Installation only proceeds when DEEPSEEK_API_KEY is already set in the environment.
