A long-horizon benchmark built on NVIDIA Isaac Lab. In one episode a Unitree G1 positions a step ladder under a fixture, climbs it, exchanges a spent bulb for a fresh one and disposes of the spent one. Twelve subtask environments scored on difficulty-weighted gates, standard and privileged observation modes, and reference baselines spanning RSL-RL PPO, zero-shot GR00T N1.7 and whole-body controllers.