fix(socket): 修复 Socket 初始化顺序导致的事件监听丢失

- 添加 pendingListeners 队列暂存早期注册的事件监听器
- on() 方法在 socket 未初始化时将监听器加入队列
- connect() 方法初始化后自动注册所有暂存的监听器

解决 NotificationContext 在 socket.connect() 之前调用 socket.on()
导致的监听器丢失问题。

🔧 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/services/socketService.js

@@ -16,6 +16,7 @@ class SocketService {
         this.reconnectAttempts = 0;
         this.maxReconnectAttempts = Infinity; // 无限重试
         this.customReconnectTimer = null; // 自定义重连定时器
+        this.pendingListeners = []; // 暂存等待注册的事件监听器
     }
 
     /**
@@ -50,6 +51,15 @@ class SocketService {
             ...options,
         });
 
+        // 注册所有暂存的事件监听器
+        if (this.pendingListeners.length > 0) {
+            console.log(`[socketService] 📦 注册 ${this.pendingListeners.length} 个暂存的事件监听器`);
+            this.pendingListeners.forEach(({ event, callback }) => {
+                this.on(event, callback);
+            });
+            this.pendingListeners = []; // 清空暂存队列
+        }
+
         // 监听连接成功
         this.socket.on('connect', () => {
             this.connected = true;
@@ -147,8 +157,10 @@ class SocketService {
      */
     on(event, callback) {
         if (!this.socket) {
-            logger.warn('socketService', 'Cannot listen to event: socket not initialized', { event });
-            console.warn(`[socketService] ❌ 无法监听事件 ${event}: Socket 未初始化`);
+            // Socket 未初始化，暂存监听器
+            logger.info('socketService', 'Socket not ready, queuing listener', { event });
+            console.log(`[socketService] 📦 Socket 未初始化，暂存事件监听器: ${event}`);
+            this.pendingListeners.push({ event, callback });
             return;
         }