{
  "actualTestDate": "2026-11-08 Asia/Tokyo",
  "taskAttribution": "2026-11-08",
  "method": "Enumerate actual saved audio streams then decode each explicit mapping without changing channel count. Hann FFT on samples24000..72000,1Hz bins; RMS=sqrt(sum(x^2)/N). Source tones440/880 represent distinct streams, not L/R of one source.",
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    "zone2": false
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  "sourceVerification": "input-measurements.json and control-verification.json",
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  "scope": "One actual unchanged-tool export per verified default control. Content readouts not byte-perfect soundtrack or exact sync claim."
}