Single-delivery clips only (dev 217, test 46); drop clip_status and fps columns

All 287 clips: dev 236 (every field labelled, per-field verified flag), test 51 (human gold incl. clip_status)

Drop file_name, split, label_source, sha256, clip_status, lineage, innings, over_ball

Add confirmed annotations: test (46 human gold) and dev (196 auto-accepted)