Supernumerary-limbs locomotion paper trains Unitree H1 humanoid gait

Evidence notes
- The paper proposes a hierarchical controller for humanoid locomotion with supernumerary limbs.
- The low-level component trains a walking gait for a Unitree H1 humanoid using imitation learning and curriculum learning.
Company context
Develops quadruped and humanoid robots, with strength in dynamic locomotion, vertically integrated hardware, and relatively low-cost commercial deployment. Unitree is one of the clearest examples of a legged robotics company moving from research visibility into real productisation and broader market distribution.