Docs: Update benchmark for google/gemini-3.8-flash EFF:high

tests/9_stream_visualizer/outputs/google_gemini-3.8-flash EFF_high.js

@@ -0,0 +1,34 @@
+export async function createStreamVisualizer(asyncIterable, { maxPoints, alpha, width, height, yDomain }) {
+  const [d3, data] = await Promise.all([
+    import('d3'),
+    (async () => {
+      const buffer = [];
+      let ema;
+      for await (const { timestamp, value } of asyncIterable) {
+        ema = ema == null ? value : alpha * value + (1 - alpha) * ema;
+        buffer.push({ timestamp, value, ema });
+        if (buffer.length > maxPoints) buffer.shift();
+      }
+      return buffer;
+    })()
+  ]);
+
+  if (!data.length) return { data, path: '' };
+
+  const x = d3.scaleLinear()
+    .domain([data[0].timestamp, data.at(-1).timestamp])
+    .range([0, width]);
+
+  const y = d3.scaleLinear()
+    .domain(yDomain)
+    .range([height, 0]);
+
+  const path = d3.line()
+    .x(d => x(d.timestamp))
+    .y(d => y(d.ema))(data) ?? '';
+
+  return { data, path };
+}
+export default createStreamVisualizer;
+// Generation time: 21.189s
+// Result: FAIL