Operate and orchestrate the xAI Grok Build CLI as a bounded coding collaborator. Use when invoking `grok`, especially `grok -p` for headless prompts, `grok agent` for ACP integrations, exact session continuation, delegated implementation or review, agent pairing, consulting, rubber-duck dialogue, structured output, or CLI configuration and diagnostics. Do not use for the Grok web app or direct xAI API integration unless Grok Build CLI behavior is involved.