chore(web): 移除过时的socket调试与服务器状态监控代码

移除了登录页与后台管理页的服务器状态展示UI、public-status.js脚本引用，删除了index.js中的socket运行时日志上报逻辑与连接状态追踪代码，同时删除了用于排查socket polling 400问题的调试文档。

web/index.js

@@ -34,42 +34,9 @@ createApp({
             return map[currentView.value] || '票价图';
         });
 
-        const connected = ref(false);
         // Prefer polling first so admin remains connected even when the proxy
         // does not support WebSocket upgrades reliably.
         const socket = io({ transports: ['polling', 'websocket'] });
-        // #region debug-point socket-runtime-admin
-        const reportSocketRuntime = (type, detail = {}) => {
-            try {
-                const payload = JSON.stringify({
-                    category: 'admin',
-                    source: 'socket-runtime',
-                    level: type.includes('error') ? 'error' : 'info',
-                    type,
-                    detail: {
-                        page: location.pathname,
-                        href: location.href,
-                        online: navigator.onLine,
-                        socket_id: socket.id || '',
-                        connected: !!socket.connected,
-                        transport: socket.io?.engine?.transport?.name || '',
-                        ...detail
-                    }
-                });
-                if (navigator.sendBeacon) {
-                    const blob = new Blob([payload], { type: 'application/json' });
-                    navigator.sendBeacon('/api/log', blob);
-                    return;
-                }
-                fetch('/api/log', {
-                    method: 'POST',
-                    headers: { 'Content-Type': 'application/json' },
-                    body: payload,
-                    keepalive: true
-                }).catch(() => {});
-            } catch (_) {}
-        };
-        // #endregion
 
         // Data State
         const stations = ref([]);
@@ -1386,38 +1353,6 @@ createApp({
         };
 
         // Socket Listeners
-        // #region debug-point socket-runtime-admin
-        socket.on('connect', () => {
-            connected.value = true;
-            reportSocketRuntime('socket_connect');
-        });
-        socket.on('disconnect', (reason) => {
-            connected.value = false;
-            reportSocketRuntime('socket_disconnect', { reason: reason || '' });
-        });
-        socket.on('connect_error', (error) => {
-            reportSocketRuntime('socket_connect_error', {
-                message: error?.message || '',
-                description: error?.description || '',
-                context: error?.context || null
-            });
-        });
-        if (socket.io) {
-            socket.io.on('reconnect_attempt', (attempt) => {
-                reportSocketRuntime('socket_reconnect_attempt', { attempt: Number(attempt) || 0 });
-            });
-            socket.io.on('reconnect_error', (error) => {
-                reportSocketRuntime('socket_reconnect_error', {
-                    message: error?.message || '',
-                    description: error?.description || ''
-                });
-            });
-            socket.io.on('reconnect_failed', () => {
-                reportSocketRuntime('socket_reconnect_failed');
-            });
-        }
-        // #endregion
-        
         socket.on('stations:updated', (data) => { 
             stations.value = data; 
             // Refresh map when stations change
@@ -1618,7 +1553,7 @@ createApp({
         };
 
         return {
-            currentView, viewTitle, connected, sidebarOpen,
+            currentView, viewTitle, sidebarOpen,
             loadingState, isViewBusy, lastSyncText, currentViewSummary,
             stations, lines, fares, stats, config, recentLogs, ticketList,
             logs, logCategory, logTypeFilter, logQuery, logMax, logLoading, fetchLogs,