fix(desktop): kill zombie server process on startup timeout (#11602)

Co-authored-by: Brendan Allan <brendonovich@outlook.com>

packages/desktop/src-tauri/src/lib.rs

@@ -526,6 +526,7 @@ async fn spawn_local_server(
     let timestamp = Instant::now();
     loop {
         if timestamp.elapsed() > Duration::from_secs(30) {
+            let _ = child.kill();
             break Err(format!(
                 "Failed to spawn OpenCode Server. Logs:\n{}",
                 get_logs(app.clone()).await.unwrap()