SAM3D canonical-init-frame fix: 12 clips refreshed (sanity 5 + batch 7) (6/12)

2026-05-15: state machine v2 — STATIC / GRASPED_L/R/BOTH / MOVING + L/R-aware grasp (34/105)

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

Initial deploy