fix(stub): downgrade websocket disconnect logs to warn/info

stub/src/main.rs

@@ -106,7 +106,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                 .await
                                 .is_err()
                             {
-                                tracing::error!("Failed to write to websocket");
+                                tracing::warn!("Failed to write to websocket (connection closed)");
                                 break;
                             }
                         }
@@ -130,7 +130,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                 let _ = stdout.flush().await;
                             }
                         }
-                        tracing::error!("Websocket read loop exited");
+                        tracing::info!("Websocket read loop exited");
                     });
 
                     tokio::select! {