fix(smaract): ensure setpoint is in sync after restart

csaxs_bec/devices/smaract/smaract_ophyd.py

@@ -43,7 +43,10 @@ class SmaractReadbackSignal(SmaractSignalRO):
 
 
 class SmaractSetpointSignal(SmaractSignalBase):
-    setpoint = 0
+
+    def __init__(self, signal_name, **kwargs):
+        super().__init__(signal_name, **kwargs)
+        self.setpoint = 0
 
     @threadlocked
     def _socket_get(self):
@@ -156,6 +159,14 @@ class SmaractMotor(Device, PositionerBase):
 
     def wait_for_connection(self, timeout: float = 30.0) -> bool:
         self.controller.on(timeout=timeout)
+        self._update_setpoint_from_readback()
+
+    def _update_setpoint_from_readback(self):
+        """
+        The setpoint is only stored locally. After a restart,
+        we need to update it to match the current readback value.
+        """
+        self.user_setpoint.setpoint = self.readback.get()
 
     def destroy(self):
         """Make sure to turn off the controller socket on destroy."""