fix(web): 强制 Socket.IO 使用 WebSocket 传输

因为线上环境没有配置 IP Hash (Sticky Sessions)，导致默认的 polling 长轮询请求会随机分配到不同后端，从而引发 400 Bad Request 和连接断开重连刷屏的问题。
现将 transports 锁定为 ['websocket']，直接使用 WebSocket 连接。

web/index.html

@@ -1137,7 +1137,7 @@
         </main>
     </div>
     <script src="/custom-dialog.js?v=11"></script>
-    <script src="index.js?v=6"></script>
+    <script src="index.js?v=7"></script>
     <script>
         document.addEventListener('DOMContentLoaded', () => {
             const isDomain = location.hostname.includes('fse-media.group');

web/index.js

@@ -35,9 +35,8 @@ createApp({
             return map[currentView.value] || '票价图';
         });
 
-        // Prefer polling first so admin remains connected even when the proxy
+        // 强制使用 WebSocket，避免轮询 (polling) 在负载均衡/反代下产生 400 Bad Request
-        // does not support WebSocket upgrades reliably.
+        const socket = io({ transports: ['websocket'], timeout: 20000 });
-        const socket = io({ transports: ['polling', 'websocket'] });
 
         // Data State
         const stations = ref([]);

web/ticket-route.html

@@ -593,7 +593,7 @@
     </div>
     <script src="/custom-dialog.js?v=11"></script>
     <script src="/public-status.js?v=14"></script>
-    <script src="ticket-route.js?v=7"></script>
+    <script src="ticket-route.js?v=8"></script>
     <script>
         document.addEventListener('DOMContentLoaded', () => {
             const isDomain = location.hostname.includes('fse-media.group');

web/ticket-route.js

@@ -23,8 +23,8 @@ createApp({
         });
 
         const connected = ref(false);
-        // Keep the legacy route console usable behind proxies that only allow polling.
+        // 强制使用 WebSocket，避免轮询 (polling) 在负载均衡/反代下产生 400 Bad Request
-        const socket = io({ transports: ['polling', 'websocket'], timeout: 20000 });
+        const socket = io({ transports: ['websocket'], timeout: 20000 });
 
 
         const stations = ref([]);