Recover 15 clips from stale-overwrite of canonical-init-frame fix (5/15)

SAM3D hand_iou-gate rerun: 26 clips refreshed (D-track + filters + export) (8/26)

2026-05-15: state machine v2 — STATIC / GRASPED_L/R/BOTH / MOVING + L/R-aware grasp (32/105)

Step 1 full re-run @ 15fps with compound+fallback prompts and containment merge (55 clips)

Replace samples/ with 21-clip Step 1 test batch (no SAM3D, no 6DoF)

Refresh dataset: 48 trim-reviewed clips, manual SAM3 prompts, full descriptions in scene.json