Build, diagnose, install, and verify a reliable Codex task-status traffic light on an Ulanzi U-Clock TC002/PixDeck device using its HTTP Custom App API. Use when an AI must implement RUN/approval/DONE lights, parse Codex rollout JSONL logs, prevent one-second red flashes, support multiple Codex sessions, or install an auto-start watcher on Windows or macOS.
