中控支持一键安装到桌面，HTTPS 下可装成独立应用。

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

static/sw.js

@@ -0,0 +1,7 @@
+/* 期权中控 PWA:仅占位使可安装,请求一律走网络 */
+self.addEventListener("install", function (event) {
+  event.waitUntil(self.skipWaiting());
+});
+self.addEventListener("activate", function (event) {
+  event.waitUntil(self.clients.claim());
+});