Docs: Update benchmark for google/gemini-3.7-flash EFF:high

tests/4_hexchain_pipeline/outputs/google_gemini-3.7-flash EFF_high.js

@@ -0,0 +1,56 @@
+export async function hexchain(tomlString) {
+  const [smol, sr, ss, ajvMod, tt, dp] = await Promise.all(
+    ['smol-toml', 'seedrandom', 'simple-statistics', 'ajv', 'text-table', 'dompurify']
+      .map(lib => import(`https://esm.sh/${lib}`))
+  );
+
+  const parse = smol.parse || smol.default?.parse || smol.default;
+  const seedrandom = sr.default || sr;
+  const Ajv = ajvMod.default || ajvMod;
+  const table = tt.default || tt;
+  const DOMPurify = dp.default || dp;
+
+  const config = parse(tomlString);
+  const ajv = new Ajv();
+
+  const valid = ajv.validate({
+    type: 'object',
+    required: ['seed', 'count', 'label'],
+    properties: {
+      seed: { type: 'string' },
+      count: { type: 'integer', minimum: 1, maximum: 10000 },
+      label: { type: 'string', minLength: 1 }
+    }
+  }, config);
+
+  if (!valid) {
+    return { valid: false, errors: ajv.errorsText() };
+  }
+
+  const rng = new seedrandom(config.seed);
+  const data = Array.from({ length: config.count }, () => rng());
+
+  const mean = +ss.mean(data).toFixed(6);
+  const stddev = +ss.standardDeviation(data).toFixed(6);
+  const median = +ss.median(data).toFixed(6);
+
+  const tableStr = table([
+    ['Stat', 'Value'],
+    ['mean', String(mean)],
+    ['stddev', String(stddev)],
+    ['median', String(median)]
+  ]);
+
+  const sanitizedHTML = DOMPurify.sanitize(`<pre class="stats">${tableStr}</pre>`);
+
+  return {
+    valid: true,
+    label: config.label,
+    stats: { mean, stddev, median },
+    table: sanitizedHTML,
+    count: config.count
+  };
+}
+export default hexchain;
+// Generation time: 24.452s
+// Result: PASS