Docs: Update benchmark for test 12

tests/12_mst_pipeline/outputs/google_gemini-3-flash-preview TEMP_0.35.js

@@ -0,0 +1,57 @@
+async function computeMST(tomlStr) {
+  const [toml, { Heap }, table] = await Promise.all([
+    import('https://cdn.skypack.dev/smol-toml'),
+    import('https://cdn.skypack.dev/mnemonist'),
+    import('https://cdn.skypack.dev/text-table')
+  ]);
+
+  const { edges } = toml.parse(tomlStr);
+  const heap = new Heap((a, b) => a.weight - b.weight);
+  const nodes = new Set();
+
+  edges.forEach(e => {
+    heap.push(e);
+    nodes.add(e.from);
+    nodes.add(e.to);
+  });
+
+  const parent = {};
+  const rank = {};
+  nodes.forEach(n => {
+    parent[n] = n;
+    rank[n] = 0;
+  });
+
+  const find = (i) => (parent[i] === i ? i : (parent[i] = find(parent[i])));
+
+  const union = (i, j) => {
+    let rootI = find(i), rootJ = find(j);
+    if (rootI !== rootJ) {
+      if (rank[rootI] < rank[rootJ]) [rootI, rootJ] = [rootJ, rootI];
+      parent[rootJ] = rootI;
+      if (rank[rootI] === rank[rootJ]) rank[rootI]++;
+      return true;
+    }
+    return false;
+  };
+
+  const mst = [];
+  let totalWeight = 0;
+  const target = nodes.size - 1;
+
+  while (heap.size && mst.length < target) {
+    const { from, to, weight } = heap.pop();
+    if (union(from, to)) {
+      mst.push([from, to, String(weight)]);
+      totalWeight += weight;
+    }
+  }
+
+  return {
+    table: table.default([['From', 'To', 'Weight'], ...mst]),
+    totalWeight
+  };
+}
+export default computeMST;
+// Generation time: 13.942s
+// Result: PASS