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  "revision": "96303c0e2626a47288e9fc283916770b0cebe852",
  "measured_at": "2026-09-21T09:40:08.393374+00:00",
  "clean": true,
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  "run_id": "2026-09-21T09:40:08.393374+00:00",
  "environment": {
    "platform": "macOS-14.8.9-arm64-arm-64bit",
    "machine": "arm64",
    "rustc": "rustc 1.96.1 (31fca3adb 2026-06-26)\nbinary: rustc\ncommit-hash: 31fca3adb283cc9dfd56b49cdee9a96eb9c96ffd\ncommit-date: 2026-06-26\nhost: aarch64-apple-darwin\nrelease: 1.96.1\nLLVM version: 22.1.2",
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    "python": "3.12.10 (v3.12.10:0cc81280367, Apr  8 2025, 08:46:59) [Clang 13.0.0 (clang-1300.0.29.30)]"
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  "policy_status": "Observational codec comparison; no cross-machine regression budget.",
  "notes": [
    "JPEG only. This does not measure other image codecs or general image processing.",
    "CMYK uses different public sample conventions in Pillow and TurboJPEG; unequal output hashes are not automatically codec errors.",
    "Spread is not present in the summary CSV. It is unavailable here rather than inferred from the medians."
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