style: rename __del__ to shutdown

Author: maciejmajek

src/rai/rai/communication/ros2/api.py

@@ -305,7 +305,7 @@ def _verify_publisher_exists(self, topic: str) -> List[TopicEndpointInfo]:
             raise ValueError(f"No publisher found for topic: {topic}")
         return topic_endpoints
 
-    def __del__(self) -> None:
+    def shutdown(self) -> None:
         """Cleanup publishers when object is destroyed."""
         for publisher in self._publishers.values():
             publisher.destroy()
@@ -480,7 +480,7 @@ def get_result(self, handle: str) -> Any:
             raise ValueError(f"No result available for goal {handle}")
         return self.actions[handle]["result_future"].result()
 
-    def __del__(self) -> None:
+    def shutdown(self) -> None:
         """Cleanup thread pool when object is destroyed."""
         if hasattr(self, "_callback_executor"):
             self._callback_executor.shutdown(wait=False)

src/rai/rai/communication/ros2/connectors.py

@@ -119,4 +119,6 @@ def shutdown(self):
     def _cleanup(self):
         self._executor.shutdown()
         self._thread.join()
+        self._actions_api.shutdown()
+        self._topic_api.shutdown()
         self._node.destroy_node()