Docs: Update benchmark for test 3

tests/3_signal_pipeline/outputs/anthropic_claude-opus-4.6.js

@@ -0,0 +1,62 @@
+async function analyzeSignal(yamlString) {
+  const [
+    jsYaml,
+    math,
+    ndarray,
+    ndarrayFft,
+    DOMPurify
+  ] = await Promise.all([
+    import("https://cdn.jsdelivr.net/npm/js-yaml@4/+esm").then(m => m.default || m),
+    import("https://cdn.jsdelivr.net/npm/mathjs@13/+esm").then(m => m.default || m),
+    import("https://cdn.jsdelivr.net/npm/ndarray@1/+esm").then(m => m.default || m),
+    import("https://cdn.jsdelivr.net/npm/ndarray-fft@1/+esm").then(m => m.default || m),
+    import("https://cdn.jsdelivr.net/npm/dompurify@3/+esm").then(m => m.default || m),
+  ]);
+
+  const config = jsYaml.load(yamlString);
+  const { sampleRate, duration, components } = config;
+  const N = sampleRate * duration;
+
+  const signalData = new Float64Array(N);
+  for (let i = 0; i < N; i++) {
+    const t = i / sampleRate;
+    let sum = 0;
+    for (const { frequency, amplitude } of components)
+      sum += amplitude * math.sin(2 * math.pi * frequency * t);
+    signalData[i] = sum;
+  }
+
+  const real = ndarray(new Float64Array(signalData), [N]);
+  const imag = ndarray(new Float64Array(N), [N]);
+
+  ndarrayFft(1, real, imag);
+
+  const half = N / 2;
+  const magnitudes = [];
+  for (let k = 0; k <= half; k++) {
+    const r = real.get(k);
+    const im = imag.get(k);
+    magnitudes.push(math.sqrt(r ** 2 + im ** 2) / half);
+  }
+
+  const peaks = magnitudes
+    .map((mag, k) => ({
+      frequencyHz: Math.round(k * sampleRate / N),
+      magnitude: Math.round(mag * 100) / 100
+    }))
+    .filter(p => p.magnitude > 0.1)
+    .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: 9.844s
+// Result: PASS