chore: 抢单端UI回退前备份当前完整工作区

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

utils/kefu-nav.js

@@ -0,0 +1,12 @@
+/** 与消息页「联系客服」一致：跳转客服会话 */
+export function openCustomerServiceChat() {
+  const app = getApp();
+  if (app.globalData.chatEnabled && app.ensureConnection) {
+    app.globalData.goEasyConnection.autoReconnect = true;
+    app.ensureConnection();
+  }
+  const param = { teamId: 'support_team' };
+  wx.navigateTo({
+    url: '/pages/cs-chat/cs-chat?data=' + encodeURIComponent(JSON.stringify(param)),
+  });
+}