Drop 19 bad samples (agibot jitter + droid/airoa misalignment)

Delete stale v4 files (batch 2/8)

Delete stale v4 files (batch 1/8)

Re-render pointmap for droid (full-episode, frame aligned)

Re-render mesh_scenario.mp4 for droid (URDF coupler fix + frame alignment)

Add arm_mask.npy for droid (36 samples)

Add pointmap (mp4+norm.json) for droid

Add mesh_scenario.mp4 for droid

Add episode_meta.npz for droid (batch 1/1)

Upload benchmark_export_v4 (240 samples, 6 datasets)