Docs: Update benchmark for test 3

tests/3_signal_pipeline/outputs/google_gemini-3.1-pro-preview.js

@@ -0,0 +1,44 @@
+export async function analyzeSignal(y) {
+  const [yM, mM, nM, fM, dM] = await Promise.all([
+    'js-yaml', 'mathjs', 'ndarray', 'ndarray-fft', 'dompurify'
+  ].map(p => import(`https://esm.sh/${p}`)));
+
+  const load = yM.load || yM.default.load || yM.default;
+  const { sin, pi, sqrt } = mM.default || mM;
+  const ndarray = nM.default || nM;
+  const fft = fM.default || fM;
+  const DP = dM.default || dM;
+
+  const c = load(y);
+  const N = c.sampleRate * c.duration;
+  const R = new Float64Array(N), I = new Float64Array(N);
+
+  for (let i = 0; i < N; i++) {
+    let t = i / c.sampleRate, s = 0;
+    for (const p of c.components) s += p.amplitude * sin(2 * pi * p.frequency * t);
+    R[i] = s;
+  }
+
+  const r = ndarray(R), img = ndarray(I);
+  fft(1, r, img);
+
+  const pks = [], norm = N / 2;
+  for (let k = 0; k <= norm; k++) {
+    const m = sqrt(r.get(k) ** 2 + img.get(k) ** 2) / norm;
+    if (m > 0.1) pks.push({
+      frequencyHz: Math.round(k * c.sampleRate / N),
+      magnitude: +m.toFixed(2)
+    });
+  }
+
+  pks.sort((a, b) => b.magnitude - a.magnitude);
+
+  const h = `<table><tr><th>Frequency (Hz)</th><th>Magnitude</th></tr>${
+    pks.map(p => `<tr><td>${p.frequencyHz}</td><td>${p.magnitude}</td></tr>`).join('')
+  }</table>`;
+
+  return { peaks: pks, html: DP.sanitize(h), signalLength: N };
+}
+export default analyzeSignal;
+// Generation time: 50.698s
+// Result: PASS