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

tests/3_signal_pipeline/outputs/anthropic_claude-fable-5.js

@@ -0,0 +1,46 @@
+const analyzeSignal = async yamlStr => {
+  const [yaml, math, ndarray, fft, DOMPurify] = (await Promise.all(
+    ['js-yaml', 'mathjs', 'ndarray', 'ndarray-fft', 'dompurify']
+      .map(pkg => import(`https://esm.sh/${pkg}`))
+  )).map(m => m.default ?? m);
+
+  const { sampleRate, duration, components } = yaml.load(yamlStr);
+  const N = sampleRate * duration;
+
+  const signal = Array.from({ length: N }, (_, i) => {
+    const t = i / sampleRate;
+    return components.reduce(
+      (sum, { frequency, amplitude }) =>
+        sum + amplitude * math.sin(2 * math.pi * frequency * t),
+      0
+    );
+  });
+
+  const real = ndarray(new Float64Array(signal));
+  const imag = ndarray(new Float64Array(N));
+  fft(1, real, imag);
+
+  const peaks = [];
+  for (let k = 0; k <= N / 2; k++) {
+    const magnitude = math.sqrt(real.get(k) ** 2 + imag.get(k) ** 2) / (N / 2);
+    if (magnitude > 0.1) {
+      peaks.push({
+        frequencyHz: Math.round(k * sampleRate / N),
+        magnitude: Math.round(magnitude * 100) / 100
+      });
+    }
+  }
+  peaks.sort((a, b) => b.magnitude - a.magnitude);
+
+  const rows = peaks
+    .map(p => `<tr><td>${p.frequencyHz}</td><td>${p.magnitude}</td></tr>`)
+    .join('');
+  const html = DOMPurify.sanitize(
+    `<table><tr><th>Frequency (Hz)</th><th>Magnitude</th></tr>${rows}</table>`
+  );
+
+  return { peaks, html, signalLength: N };
+};
+export default analyzeSignal;
+// Generation time: 16.968s
+// Result: PASS