Docs: Update benchmark for test 4

tests/4_hexchain_pipeline/outputs/google_gemini-3-pro-preview TEMP_0.35.js

@@ -0,0 +1,49 @@
+const hexchain = async (tomlInput) => {
+  const [
+    { parse },
+    { default: SeedRandom },
+    Stats,
+    { default: Ajv },
+    { default: textTable },
+    { default: DOMPurifyFactory }
+  ] = await Promise.all([
+    'smol-toml', 'seedrandom', 'simple-statistics', 'ajv', 'text-table', 'dompurify'
+  ].map(lib => import(`https://esm.sh/${lib}`)));
+
+  const config = parse(tomlInput), ajv = new Ajv();
+  const validate = ajv.compile({
+    type: 'object', required: ['seed', 'count', 'label'],
+    properties: {
+      seed: { type: 'string' },
+      count: { type: 'integer', minimum: 1, maximum: 10000 },
+      label: { type: 'string', minLength: 1 }
+    }
+  });
+
+  if (!validate(config)) return { valid: false, errors: ajv.errorsText(validate.errors) };
+
+  const rng = new SeedRandom(config.seed);
+  const data = Array.from({ length: config.count }, rng);
+  const fmt = n => Number(n.toFixed(6));
+  
+  const stats = {
+    mean: fmt(Stats.mean(data)),
+    stddev: fmt(Stats.standardDeviation(data)),
+    median: fmt(Stats.median(data))
+  };
+
+  const tableString = textTable([
+    ['Stat', 'Value'],
+    ['mean', String(stats.mean)],
+    ['stddev', String(stats.stddev)],
+    ['median', String(stats.median)]
+  ]);
+
+  const sanitizer = DOMPurifyFactory.sanitize ? DOMPurifyFactory : DOMPurifyFactory(window);
+  const html = sanitizer.sanitize(`<pre class="stats">${tableString}</pre>`);
+
+  return { valid: true, label: config.label, stats, table: html, count: config.count };
+};
+export default hexchain;
+// Generation time: 62.534s
+// Result: PASS