在 AiVideo 中能看到图像

增加了在线状态同步逻辑

SHH.CameraDashboard/Services/Payloads/CommandProcessor.cs

@@ -0,0 +1,41 @@
+using MessagePack;
+using SHH.Contracts;
+using System.Diagnostics;
+
+namespace SHH.CameraDashboard.Services.Processors
+{
+    /// <summary>
+    /// [协议处理器] 处理来自服务端的反向指令 (COMMAND)
+    /// 场景：服务端主动要求客户端执行某些动作（如弹出实时画面、同步系统配置等）
+    /// </summary>
+    public class CommandProcessor : IProtocolProcessor
+    {
+        public string ProtocolType => "COMMAND";
+        private readonly CommandBusClient _bus;
+
+        public CommandProcessor(CommandBusClient bus)
+        {
+            _bus = bus;
+        }
+
+        public void Process(byte[] identity, byte[] payloadBytes)
+        {
+            try
+            {
+                // 1. 反序列化指令载体
+                var payload = MessagePackSerializer.Deserialize<CommandPayload>(payloadBytes);
+                if (payload == null) return;
+
+                // 2. 核心：触发总线上的指令接收事件
+                // 让监听该事件的 ViewModel 或全局管理器去执行具体业务
+                _bus.RaiseCommandReceived(payload);
+
+                Debug.WriteLine($"[Bus] 收到服务端反向指令: {payload.CmdCode}, 目标: {payload.TargetId}");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"[Bus-Err] CommandProcessor 解析异常: {ex.Message}");
+            }
+        }
+    }
+}