The roboco-agent-grok image now installs xAI's official grok CLI (Grok Build,
pinned 0.2.56) instead of opencode, authenticated by the SuperGrok subscription
via a mounted ~/.grok/auth.json (parity with the Claude ~/.claude mount, no
metered API key). The entrypoint renders ~/.grok/config.toml + per-role flags
from /app (the ModuleNotFound-shadowing lesson), runs grok -p headless with
--output-format json, keeps the prompt-injection guard, and exits 75 on a
rate-limit so the orchestrator parks the provider. No in-container SDK server or
budget-feed — native --max-turns + server-side terminal-substitute replace them.
