{
  "schema": "yichus-decision-verdict-v1",
  "artifactClass": "boundary-decision-packet",
  "scope": "Ten proposed edits across six complete input programs: one defect repair, one pure simplification, six preservation decisions and two insufficient-evidence decisions. One independent reader pair; selected tasks, not open-ended defect discovery.",
  "protocolSha256": "01e0fa730d34117149560a500dd3844a55f2d7f05c0a78d3ad57e8a6a3841a94",
  "taskResults": [
    {
      "kind": "defect",
      "cases": 1,
      "artifactCorrect": 1,
      "baselineCorrect": 1,
      "minimumAccuracy": 1.0
    },
    {
      "kind": "insufficient",
      "cases": 2,
      "artifactCorrect": 2,
      "baselineCorrect": 2,
      "minimumAccuracy": 1.0
    },
    {
      "kind": "preserve",
      "cases": 6,
      "artifactCorrect": 5,
      "baselineCorrect": 6,
      "minimumAccuracy": 1.0
    },
    {
      "kind": "simplification",
      "cases": 1,
      "artifactCorrect": 1,
      "baselineCorrect": 1,
      "minimumAccuracy": 1.0
    }
  ],
  "unsafeDecisions": [],
  "artifactCost": 9553.0,
  "baselineCost": 30485.0,
  "costLift": 3.1911441432010887,
  "costBasis": "materialBytes",
  "costScope": "common-plus-arm-input",
  "verdict": "fail",
  "reasons": [
    "preserve decisions regress: 5 correct versus baseline 6",
    "preserve accuracy 0.8333333333333334 is below frozen floor 1.0"
  ]
}