Docs: Update benchmark for test 4

tests/4_hexchain_pipeline/outputs/x-ai_grok-4.js

@@ -0,0 +1,28 @@
+async function hexchain(tomlStr) {
+  const {parse} = await import('https://esm.sh/smol-toml');
+  const config = parse(tomlStr);
+  const Ajv = (await import('https://esm.sh/ajv')).default;
+  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 seedrandom = (await import('https://esm.sh/seedrandom')).default;
+  const rng = new seedrandom(config.seed);
+  const nums = Array.from({length: config.count}, () => rng());
+  const ss = await import('https://esm.sh/simple-statistics');
+  let mean = ss.mean(nums);
+  let stddev = ss.standardDeviation(nums);
+  let median = ss.median(nums);
+  mean = Math.round(mean * 1e6) / 1e6;
+  stddev = Math.round(stddev * 1e6) / 1e6;
+  median = Math.round(median * 1e6) / 1e6;
+  const textTable = (await import('https://esm.sh/text-table')).default;
+  const tableArr = [['Stat','Value'], ['mean', String(mean)], ['stddev', String(stddev)], ['median', String(median)]];
+  const tableStr = textTable(tableArr);
+  const DOMPurify = (await import('https://esm.sh/dompurify')).default;
+  const html = '<pre class="stats">' + tableStr + '</pre>';
+  const sanitized = DOMPurify.sanitize(html);
+  return {valid:true, label:config.label, stats:{mean, stddev, median}, table: sanitized, count:config.count};
+}
+export default hexchain;
+// Generation time: 130.290s
+// Result: PASS