feat: cb can communicate face with ri

ref: N25B-397

src/control_backend/agents/communication/ri_communication_agent.py

@@ -268,6 +268,30 @@ class RICommunicationAgent(BaseAgent):
                         if self.pub_socket is not None:
                             await self.pub_socket.send_multipart([topic, data])
                         await asyncio.sleep(settings.behaviour_settings.sleep_s)
+                    case "face":
+                        # Ask the RI for current face status
+                        request = {"endpoint": "face", "data": {}}
+                        try:
+                            assert self._req_socket is not None
+                            await self._req_socket.send_json(request)
+                            response = await asyncio.wait_for(
+                                self._req_socket.recv_json(), timeout=2.0
+                            )
+
+                            # Expect response: {"endpoint": "face", "data": True/False}
+                            face_status = response.get("data", False)
+
+                            topic = b"face"
+                            data = json.dumps(face_status).encode()
+
+                            if self.pub_socket is not None:
+                                await self.pub_socket.send_multipart([topic, data])
+
+                            self.logger.debug(f"Face status: {face_status}")
+
+                        except Exception as e:
+                            self.logger.warning(f"Failed to get face status: {e}")
+
                     case _:
                         self.logger.debug(
                             "Received message with topic different than ping, while ping expected."