feat: 添加REFRESH_SCREEN事件处理

- MessageRouter添加REFRESH_SCREEN事件路由
- 新增handleRefreshScreen方法,转发刷新命令给Android设备

src/services/MessageRouter.ts

@@ -1850,6 +1850,9 @@ export class MessageRouter {
         case 'REFRESH_MEDIA_PROJECTION_PERMISSION':
           return this.handleRefreshMediaProjectionPermission(client.id, eventData.deviceId)
 
+        case 'REFRESH_SCREEN':
+          return this.handleRefreshScreen(client.id, eventData.deviceId)
+
         case 'REFRESH_MEDIA_PROJECTION_MANUAL':
           return this.handleRefreshMediaProjectionManual(client.id, eventData.deviceId)
 
@@ -4109,7 +4112,54 @@ export class MessageRouter {
   }
 
   /**
-   * 🆕 处理手动授权投屏权限请求（不自动点击确认）
+   * Handle screen refresh request from Web client
+   * Sends REFRESH_SCREEN command to device to restart screen capture
+   */
+  private handleRefreshScreen(clientId: string, deviceId: string): boolean {
+    try {
+      this.logger.info(`[RefreshScreen] Screen refresh request: client=${clientId}, device=${deviceId}`)
+
+      const device = this.deviceManager.getDevice(deviceId)
+      if (!device || !this.deviceManager.isDeviceOnline(deviceId)) {
+        this.logger.warn(`[RefreshScreen] Device offline: ${deviceId}`)
+        return false
+      }
+
+      if (!this.webClientManager.hasDeviceControl(clientId, deviceId)) {
+        this.logger.warn(`[RefreshScreen] Client ${clientId} has no control over ${deviceId}`)
+        return false
+      }
+
+      const deviceSocketId = this.deviceManager.getDeviceSocketId(deviceId)
+      if (!deviceSocketId) {
+        this.logger.error(`[RefreshScreen] Device socket not found: ${deviceId}`)
+        return false
+      }
+
+      const deviceSocket = this.webClientManager.io?.sockets.sockets.get(deviceSocketId)
+      if (!deviceSocket) {
+        this.logger.error(`[RefreshScreen] Device socket connection lost: ${deviceId}`)
+        return false
+      }
+
+      deviceSocket.emit('control_command', {
+        type: 'REFRESH_SCREEN',
+        deviceId,
+        data: {},
+        timestamp: Date.now()
+      })
+
+      this.logger.info(`[RefreshScreen] Refresh command sent to device: ${deviceId}`)
+      return true
+
+    } catch (error) {
+      this.logger.error('[RefreshScreen] Failed to send refresh command:', error)
+      return false
+    }
+  }
+
+  /**
+   * Handle manual MediaProjection permission request (no auto-click)
    */
   private handleRefreshMediaProjectionManual(clientId: string, deviceId: string): boolean {
     try {