新增视频播放地址请求

src/mqtt_client_wrapper.cpp

@@ -114,7 +114,7 @@ static void on_mqtt_message_received(const std::string& topic, const std::string
 
                         // ---- 发布 MQTT 响应 ----
                         std::string out = resp.dump(-1);
-                        mqtt_client->publish(g_app_config.mqtt.topics.video_down, out, 1, false);
+                        mqtt_client->publish(g_app_config.mqtt.topics.video_down, out, 1);
                     }
                 }
             }