Port the code changes from MotionLCM c708ae2 through 81c0636: scoped legacy NumPy aliases for SMPL, correct video frame timing, and Cycles persistent data enabled by default with --no_persistent_data to opt out.
Retain the Space app, deployment metadata, and dependency pins. Verified source equality, Python syntax, NumPy alias cleanup, Blender CLI startup, and a 196-frame video at 20 FPS.
