{
  "source_sha256": "c79bfcc77e0d05c43cbc3cd8ce3d8087cbf375c4d67e93c7b5728cf66a9a005b",
  "evidence_kind": "visual-inspection",
  "start_seconds": 30,
  "end_seconds": 33,
  "wave_seconds": [
    28.7,
    30
  ],
  "observations": [
    "Synthetic hand motion stops at 30 s; calm pose remains through 32.967 s.",
    "The generated figure leaves the pose from 33 s; file continues until 35 s.",
    "Low-level generated room noise continues through the calm hold; this is not claimed to be silent."
  ],
  "scope": "Synthetic construction and decoded frame inspection, not a human performance or real rehearsal."
}