sim: improve simulator

cli/main.rs

@@ -93,6 +93,7 @@ fn main() -> anyhow::Result<()> {
                 // At prompt, increment interrupt count
                 if interrupt_count.fetch_add(1, Ordering::SeqCst) >= 1 {
                     eprintln!("Interrupted. Exiting...");
+                    conn.close();
                     break;
                 }
                 println!("Use .quit to exit or press Ctrl-C again to force quit.");