Every published frame passed every quality detector -- defects are removed by cutting rather than annotated in bad_frames.json, so a reader who never opens the sidecar cannot train on frozen tactile or teleported poses.
Old sessions (2026-05, 2026-06) are untouched: they live under different date partitions and their files are neither moved nor deleted. episodes.jsonl, segments.json and bad_frames.json are merged, old rows kept verbatim.
