{"__trace__": true, "ts": "2026-05-12T07:05:36.763Z", "trace_id": "batch-20260512-150440-0bbb1c", "song_key": "02_颜色_20260512", "step": "step1", "type": "step_start", "inputs": {"audio": "/srv/music-files-platform-next/pipeline/batch-20260512-150440-0bbb1c/02_颜色_20260512/song_pgc.mp3", "has_features": true}}