first commit

scripts/test-depth-evidence.mjs

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+import assert from 'node:assert/strict';
+import { DepthProcessor } from '../src/depth/DepthProcessor.ts';
+
+function texture(values) { return DepthProcessor.fromNormalizedDepth(new Uint8Array(values), values.length, 1); }
+const flat = texture(Array(100).fill(128));
+assert.deepEqual(DepthProcessor.evidenceRange(flat), [1, 1]);
+flat.dispose();
+const scene = texture([...Array(60).fill(50), ...Array(25).fill(170), ...Array(14).fill(190), 255]);
+const [start, end] = DepthProcessor.evidenceRange(scene);
+assert.ok(start < 170 / 255 && end <= 190 / 255, 'face-range depths must contribute below the old 0.8 cutoff; one near outlier must not set the gate');
+assert.ok(end > start, 'non-flat evidence range is ordered');
+scene.dispose();
+for (const nearCount of [10, 60]) {
+  const bimodal = texture([...Array(100 - nearCount).fill(50), ...Array(nearCount).fill(240)]);
+  const [low, high] = DepthProcessor.evidenceRange(bimodal);
+  assert.ok(low < high && high <= 240 / 255, 'two distinct depth layers must not be treated as flat');
+  bimodal.dispose();
+}
+console.log('Depth histogram: flat disabled, mid-depth foreground retained, sparse near outlier rejected.');