Docs: Update benchmark for anthropic/claude-opus-4.7 EFF:medium

tests/3_signal_pipeline/outputs/anthropic_claude-opus-4.7 EFF_medium.js

@@ -0,0 +1,46 @@
+async function analyzeSignal(yamlStr) {
+  const [yaml, math, ndarray, fft, DOMPurify] = (await Promise.all([
+    import('https://esm.sh/js-yaml'),
+    import('https://esm.sh/mathjs'),
+    import('https://esm.sh/ndarray'),
+    import('https://esm.sh/ndarray-fft'),
+    import('https://esm.sh/dompurify')
+  ])).map(m => m.default ?? m);
+
+  const cfg = yaml.load(yamlStr);
+  const N = cfg.sampleRate * cfg.duration;
+  const signal = Array.from({ length: N }, (_, i) => {
+    const t = i / cfg.sampleRate;
+    return cfg.components.reduce(
+      (s, c) => s + c.amplitude * math.sin(2 * math.pi * c.frequency * t),
+      0
+    );
+  });
+
+  const real = ndarray(new Float64Array(signal), [N]);
+  const imag = ndarray(new Float64Array(N), [N]);
+  fft(1, real, imag);
+
+  const half = N / 2;
+  const peaks = [];
+  for (let k = 0; k <= half; k++) {
+    const mag = math.sqrt(real.get(k) ** 2 + imag.get(k) ** 2) / half;
+    if (mag > 0.1) {
+      peaks.push({
+        frequencyHz: Math.round(k * cfg.sampleRate / N),
+        magnitude: Math.round(mag * 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: 9.148s
+// Result: PASS