per-frame grip_traj (dense Grip anchor; trim+stride mapped, kf check med 2.0 loc)

A spans <- 2026-06-19 VLM annotations (lag-0-verified, byte-matched tool boxes); plan/task unchanged

rebuild @ pose-lag 0 (visual review: lag-3 boxes trail the fingertips on fast frames; pose stream is synchronous)

stage-3 span table: task-plan + A-condition (S omitted), trim+stride mapped

lerobot v2.1 (h264) — 45 eps / 15850 frames

add norm_stats.json

README

initial commit