{
  "testedAt": "2026-09-25T08:21:00.000Z",
  "formulaDefinition": "Heart = J/C <= 0.85 && F/C >= 1.0 && F/J >= 1.0",
  "internalDisclaimer": "Internal heuristic threshold implementation; tested on standardized 2D calibration frames; not medical dogma",
  "sampleCount": 6,
  "results": [
    {
      "id": "H1_CANONICAL",
      "label": "Classic Heart Portrait",
      "F": 152,
      "C": 142,
      "J": 108,
      "L": 190,
      "jc": 0.761,
      "fc": 1.07,
      "fj": 1.407,
      "lc": 1.338,
      "passesJawCheek": true,
      "passesForeheadCheek": true,
      "passesForeheadJaw": true,
      "isHeart": true,
      "primaryReason": "Passes all three internal thresholds (J/C <= 0.85, F/C >= 1.00, F/J >= 1.00)"
    },
    {
      "id": "H2_WIDOWS_PEAK",
      "label": "Prominent Forehead Sharp Chin",
      "F": 160,
      "C": 140,
      "J": 98,
      "L": 185,
      "jc": 0.7,
      "fc": 1.143,
      "fj": 1.633,
      "lc": 1.321,
      "passesJawCheek": true,
      "passesForeheadCheek": true,
      "passesForeheadJaw": true,
      "isHeart": true,
      "primaryReason": "Passes all three internal thresholds (J/C <= 0.85, F/C >= 1.00, F/J >= 1.00)"
    },
    {
      "id": "H3_BORDERLINE_JAW",
      "label": "Borderline Jaw Threshold (0.849)",
      "F": 148,
      "C": 140,
      "J": 118.8,
      "L": 188,
      "jc": 0.849,
      "fc": 1.057,
      "fj": 1.246,
      "lc": 1.343,
      "passesJawCheek": true,
      "passesForeheadCheek": true,
      "passesForeheadJaw": true,
      "isHeart": true,
      "primaryReason": "Passes all three internal thresholds (J/C <= 0.85, F/C >= 1.00, F/J >= 1.00)"
    },
    {
      "id": "H4_BORDERLINE_FAIL_OVAL",
      "label": "Borderline Miss (0.86 Jaw -> Oval transition)",
      "F": 148,
      "C": 140,
      "J": 120.4,
      "L": 188,
      "jc": 0.86,
      "fc": 1.057,
      "fj": 1.229,
      "lc": 1.343,
      "passesJawCheek": false,
      "passesForeheadCheek": true,
      "passesForeheadJaw": true,
      "isHeart": false,
      "primaryReason": "Jaw-to-cheekbone ratio 0.860 exceeds heart threshold 0.85 (tending toward Oval or Round)"
    },
    {
      "id": "H5_INVERTED_TRIANGLE_FLAT",
      "label": "Inverted Triangle vs Heart",
      "F": 155,
      "C": 140,
      "J": 102,
      "L": 182,
      "jc": 0.729,
      "fc": 1.107,
      "fj": 1.52,
      "lc": 1.3,
      "passesJawCheek": true,
      "passesForeheadCheek": true,
      "passesForeheadJaw": true,
      "isHeart": true,
      "primaryReason": "Passes all three internal thresholds (J/C <= 0.85, F/C >= 1.00, F/J >= 1.00)"
    },
    {
      "id": "H6_DIAMOND_CONTRAST",
      "label": "Narrow Forehead Contrast (Diamond)",
      "F": 132,
      "C": 148,
      "J": 105,
      "L": 192,
      "jc": 0.709,
      "fc": 0.892,
      "fj": 1.257,
      "lc": 1.297,
      "passesJawCheek": true,
      "passesForeheadCheek": false,
      "passesForeheadJaw": true,
      "isHeart": false,
      "primaryReason": "Forehead-to-cheekbone ratio 0.892 below 1.00 (tending toward Diamond)"
    }
  ]
}