{
  "status": "invalidated",
  "created_utc": "2026-05-25T02:37:53.754355+00:00",
  "reason": "Boss reported final audio Hz/sample-rate drift. This repeats known Nguyễn Trãi failure: final package must not stream-copy/concat audio with differing sample rates; must decode audio separately, resample to common 24000Hz mono, concat voice, mix BGM without changing voice timing, mux with video.",
  "invalidated_final_dir": "/data/video-pipeline/Youtube-Video-Maker/Project/24052026-001-Ly-Thuong-Kiet/output/invalidated_final_hz_20260525T0238Z",
  "next_action": "Rebuild step 18 final package with audio-safe workflow; keep main and intro artifacts unless QA shows they are invalid."
}