fix(custom_robot): 修复ContinuousMove命令参数检查逻辑

重构ContinuousMove命令处理逻辑，合并Start/Stop功能
添加对'on'参数的检查，根据其值决定启动或停止连续移动
修复参数缺失时的错误处理逻辑

src/custom_robot.cpp

@@ -704,23 +704,27 @@ bool CustomRobot::processSportCmd(const std::string& cmd, const nlohmann::json&
             return controller_->WalkUpright(message["param"]["flag"]);
         } else if (cmd == "CrossStep") {
             return controller_->CrossStep(message["param"]["flag"]);
-        } else if (cmd == "StartContinuousMove") {
+        } else if (cmd == "ContinuousMove") {
             if (!message.contains("param")) {
-                LOG_ERROR("StartContinuousMove cmd missing 'param'");
+                LOG_ERROR("ContinuousMove cmd missing 'param'");
                 return false;
             }
             auto param = message["param"];
+            if(param.contains("on")){
+                if(param["on"]){
                     if (!param.contains("vx") || !param.contains("vy") || !param.contains("vyaw")) {
-                LOG_ERROR("StartContinuousMove missing vx, vy, or vyaw parameters");
+                    LOG_ERROR("ContinuousMove missing vx, vy, or vyaw parameters");
                     return false;
                     }
                     float vx = param["vx"];
                     float vy = param["vy"];
                     float vyaw = param["vyaw"];
                     return startContinuousMove(vx, vy, vyaw);
-        } else if (cmd == "StopContinuousMove") {
+                }else if(!param["on"]){
                     return stopContinuousMove();
                 }
+            }
+        } 
         else {
             LOG_ERROR("Unknown Sport command: " + cmd);
             return false;