Docs: Update benchmark for anthropic/claude-fable-5

tests/4_hexchain_pipeline/outputs/anthropic_claude-fable-5.js

@@ -0,0 +1,51 @@
+const load = name => import(`https://esm.sh/${name}`);
+
+async function hexchain(tomlString) {
+  const [
+    { parse },
+    { default: seedrandom },
+    ss,
+    { default: Ajv },
+    { default: table },
+    { default: DOMPurify }
+  ] = await Promise.all(
+    ['smol-toml', 'seedrandom', 'simple-statistics', 'ajv', 'text-table', 'dompurify'].map(load)
+  );
+
+  const config = parse(tomlString);
+  const ajv = new Ajv();
+  const schema = {
+    type: 'object',
+    required: ['seed', 'count', 'label'],
+    properties: {
+      seed: { type: 'string' },
+      count: { type: 'integer', minimum: 1, maximum: 10000 },
+      label: { type: 'string', minLength: 1 }
+    }
+  };
+
+  if (!ajv.validate(schema, config)) return { valid: false, errors: ajv.errorsText() };
+
+  const rng = new seedrandom(config.seed);
+  const nums = Array.from({ length: config.count }, () => rng());
+  const round6 = x => Math.round(x * 1e6) / 1e6;
+  const [mean, stddev, median] = [ss.mean, ss.standardDeviation, ss.median].map(f => round6(f(nums)));
+
+  const ascii = table([
+    ['Stat', 'Value'],
+    ['mean', String(mean)],
+    ['stddev', String(stddev)],
+    ['median', String(median)]
+  ]);
+
+  return {
+    valid: true,
+    label: config.label,
+    stats: { mean, stddev, median },
+    table: DOMPurify.sanitize(`<pre class="stats">${ascii}</pre>`),
+    count: config.count
+  };
+}
+export default hexchain;
+// Generation time: 14.324s
+// Result: PASS