Initial eth_hedge_sim: P0 market, auth UI, one-click deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/pages/Stats.tsx

@@ -0,0 +1,8 @@
+export default function StatsPage() {
+  return (
+    <div className="card">
+      <h2 style={{ marginTop: 0 }}>统计</h2>
+      <p style={{ color: "var(--muted)" }}>胜率 / 盈亏 / 手续费曲线将在有成交后展示。</p>
+    </div>
+  );
+}