The GitHub broker runs git and gh for agent computers, but the supervisor image is node:bookworm-slim, which has neither. A containerized supervisor therefore failed every broker call. Install both, and when the supervisor runs as root, run git as the workspace owner so clones stay writable by the computer. Claude-Session: https://claude.ai/code/session_01Tgvrj34NMnaqvtgvruYQZZ Co-authored-by: Claude <noreply@anthropic.com>