Docs: Update benchmark for test 12

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

@@ -0,0 +1,45 @@
+const computeMST = async (tomlInput) => {
+  const [{ parse }, { default: Heap }, { default: table }] = await Promise.all([
+    import('https://esm.sh/smol-toml'),
+    import('https://esm.sh/mnemonist/heap'),
+    import('https://esm.sh/text-table')
+  ])
+
+  const { edges } = parse(tomlInput)
+  const heap = new Heap((a, b) => a.weight - b.weight)
+  const parent = new Map(), rank = new Map()
+
+  edges.forEach(e => {
+    heap.push(e);
+    [e.from, e.to].forEach(n => {
+      if (!parent.has(n)) parent.set(n, n), rank.set(n, 0)
+    })
+  })
+
+  const find = n => parent.get(n) === n ? n : (parent.set(n, find(parent.get(n))), parent.get(n))
+
+  const union = (a, b) => {
+    const rootA = find(a), rootB = find(b)
+    if (rootA === rootB) return false
+    const rA = rank.get(rootA), rB = rank.get(rootB)
+    if (rA < rB) parent.set(rootA, rootB)
+    else parent.set(rootB, rootA), rA === rB && rank.set(rootA, rA + 1)
+    return true
+  }
+
+  const rows = [['From', 'To', 'Weight']]
+  let totalWeight = 0
+
+  while (heap.size) {
+    const { from, to, weight } = heap.pop()
+    if (union(from, to)) {
+      rows.push([from, to, String(weight)])
+      totalWeight += weight
+    }
+  }
+
+  return { table: table(rows), totalWeight }
+}
+export default computeMST;
+// Generation time: 37.108s
+// Result: PASS