refactor: eradicate deprecated tools (sticky_notes, pinned_files, context_workspaces, pr_checklist, preferences) and dead code

stub/src/main.rs

@@ -114,6 +114,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                     });
 
                     let mut recv_task = tokio::spawn(async move {
+                        use tokio::io::AsyncWriteExt;
+                        let mut stdout = tokio::io::BufWriter::new(tokio::io::stdout());
                         while let Some(Ok(msg)) = read.next().await {
                             if let tokio_tungstenite::tungstenite::Message::Text(text) = msg {
                                 let log_prefix = logger::extract_log_prefix(&text, true);
@@ -124,8 +126,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                                     &text[..text.floor_char_boundary(1000)],
                                     if text.len() > 1000 { "..." } else { "" }
                                 );
-                                use tokio::io::AsyncWriteExt;
-                                let mut stdout = tokio::io::stdout();
                                 let _ = stdout.write_all(text.as_bytes()).await;
                                 let _ = stdout.write_all(b"\n").await;
                                 let _ = stdout.flush().await;