Docs: Update benchmark for test 4

tests/4_hexchain_pipeline/outputs/z-ai_glm-4.7.js

@@ -0,0 +1,60 @@
+const hexchain = async (tomlStr) => {
+  const [
+    { default: parseToml },
+    { default: seedrandom },
+    ss,
+    { default: Ajv },
+    { default: textTable },
+    { default: DOMPurify }
+  ] = await Promise.all([
+    import('https://esm.sh/smol-toml'),
+    import('https://esm.sh/seedrandom'),
+    import('https://esm.sh/simple-statistics'),
+    import('https://esm.sh/ajv'),
+    import('https://esm.sh/text-table'),
+    import('https://esm.sh/dompurify')
+  ]);
+
+  const config = parseToml(tomlStr);
+  const ajv = new Ajv();
+  const schema = {
+    type: 'object',
+    required: ['seed', 'count', 'label'],
+    properties: {
+      seed: { type: 'string' },
+      count: { type: 'integer', minimum: 1, maximum: 10000 },
+      label: { type: 'string', minLength: 1 }
+    }
+  };
+
+  if (!ajv.validate(schema, config)) return { valid: false, errors: ajv.errorsText() };
+
+  const rng = new seedrandom(config.seed);
+  const numbers = Array.from({ length: config.count }, rng);
+
+  const [mean, stddev, median] = [
+    ss.mean(numbers),
+    ss.standardDeviation(numbers),
+    ss.median(numbers)
+  ].map(n => parseFloat(n.toFixed(6)));
+
+  const tableStr = textTable([
+    ['Stat', 'Value'],
+    ['mean', String(mean)],
+    ['stddev', String(stddev)],
+    ['median', String(median)]
+  ]);
+
+  const cleanHTML = DOMPurify.sanitize(`<pre class="stats">${tableStr}</pre>`);
+
+  return {
+    valid: true,
+    label: config.label,
+    stats: { mean, stddev, median },
+    table: cleanHTML,
+    count: config.count
+  };
+};
+export default hexchain;
+// Generation time: 53.399s
+// Result: FAIL