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supabase/functions/corner-analysis-ensemble/index.ts
// PHASE 1.6 — corner lift scan (out-of-plane)
const tipLuma     = meanBandLuma(crop, 5, 25);
const plateauLuma = medianBandLuma(crop, 90, 160);
const shortfall   = plateauLuma - tipLuma;
const ratio       = shortfall / cardMedianShortfall;

// no mirror measurement, no deduction
if (shortfall >= 10 && ratio >= 2.0 && mirror.shortfall < 0.4 * shortfall) {
  notes.push("LIFT_CURL");
}

supabase/functions/test-edge-analysis/edgeMetrology.ts
// STRAIGHTEDGE — trace the cut line, column by column
const boundary = traceCutLine(strip, bedSide);
const fit      = robustLineFit(boundary);   // outlier-rejected
const noise    = Math.max(0.6, 2 * mad(residuals));
const coverage = columnsAbove(residuals, noise) / cols;
const chips    = detectChips(residuals);  // inward, >= 3px deep
const fibers   = fiberCensus(residuals);  // outward, cut debris

src/config/finalGradeCalculator.ts
// deterministic — the grade law
const finalGrade = Math.min(
  preliminaryGrade,
  lowestSubgradeCap,
  Math.floor(surfaceGrade),
);
return subgradeAvg > 9.5 ? 10 : finalGrade;

src/services/centering/combineCenteringGrades.ts
// centering — 60/40 front · 75/25 back
let centering = front * 0.8 + back * 0.2;
if (cornerDelta > 3) centering -= 0.5; // Diamond Cut tilt

supabase/functions/corner-analysis-ensemble/index.ts
// consensus — every layer votes, the rubric snaps
const snapped = rubricSnap(examinerGrade, RUBRIC_VALID_GRADES);
result.layers.lift = liftScan;  // measured, not guessed

supabase/functions/hybrid-card-analysis/index.ts
// every grade is registered — for life
await registerCardFax({ serial, grade, subgrades, evidence });