RobotStateWriter: using "Root" as robot root frame

source/RobotAPI/libraries/armem_robot_state/server/proprioception/RobotStateWriter.cpp

@@ -33,6 +33,7 @@
 #include <ArmarXCore/core/time/CycleUtil.h>
 #include <ArmarXCore/libraries/ArmarXCoreComponentPlugins/DebugObserverComponentPlugin.h>
 
+#include "RobotAPI/libraries/armem_robot_state/client/common/constants.h"
 #include <RobotAPI/libraries/core/FramedPose.h>
 #include <RobotAPI/libraries/aron/core/data/variant/All.h>
 #include <RobotAPI/libraries/armem/core/Time.h>
@@ -196,7 +197,7 @@ namespace armarx::armem::server::robot_state::proprioception
 
         armem::robot_state::Transform transform;
         transform.header.parentFrame = armarx::OdometryFrame;
-        transform.header.frame = "root";  // TODO: robot root node
+        transform.header.frame = armarx::armem::robot_state::constants::robotRootNodeName;
         transform.header.agent = properties.robotUnitProviderID.providerSegmentName;
         transform.header.timestamp = timestamp;
         transform.transform = odometryPose;