fix: harden terminal websocket init

static/terminal.html

@@ -414,6 +414,7 @@
     <script src="https://cdn.jsdelivr.net/npm/xterm-addon-fit@0.8.0/lib/xterm-addon-fit.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/xterm-addon-web-links@0.9.0/lib/xterm-addon-web-links.js"></script>
     <script src="https://cdn.socket.io/4.0.0/socket.io.min.js"></script>
+    <script src="/static/security.js"></script>
     
     <script>
         // 全局变量
@@ -559,8 +560,44 @@
         }
         
         // 初始化WebSocket连接
-        function initWebSocket() {
-            socket = io();
+        async function initWebSocket() {
+            const usePollingOnly = window.location.hostname !== 'localhost' &&
+                window.location.hostname !== '127.0.0.1';
+            
+            const socketOptions = usePollingOnly ? {
+                transports: ['polling'],
+                upgrade: false,
+                autoConnect: false
+            } : {
+                transports: ['websocket', 'polling'],
+                autoConnect: false
+            };
+            
+            socket = io('/', socketOptions);
+
+            const assignSocketToken = async () => {
+                if (typeof window.requestSocketToken !== 'function') {
+                    console.warn('缺少 requestSocketToken()，无法获取终端连接凭证');
+                    return false;
+                }
+                try {
+                    const freshToken = await window.requestSocketToken();
+                    socket.auth = { socket_token: freshToken };
+                    return true;
+                } catch (error) {
+                    console.error('获取 WebSocket token 失败:', error);
+                    return false;
+                }
+            };
+
+            if (socket.io && typeof socket.io.on === 'function') {
+                socket.io.on('reconnect_attempt', async () => {
+                    await assignSocketToken();
+                });
+            }
+
+            await assignSocketToken();
+            socket.connect();
             
             // 连接成功
             socket.on('connect', () => {
@@ -895,7 +932,11 @@
         // 初始化
         document.addEventListener('DOMContentLoaded', () => {
             initTerminal();
-            initWebSocket();
+            initWebSocket().catch((error) => {
+                console.error('初始化 WebSocket 失败:', error);
+                updateConnectionStatus(false);
+                term.writeln('\x1b[31m✗ WebSocket 初始化失败，请刷新后重试\x1b[0m');
+            });
             
             // 定时更新
             setInterval(updateCurrentTime, 1000);