Revert "chore: remove useless exit codes and hooks"

This reverts commit d9671faca7.

src-tauri/src/core/tray.rs

@@ -428,6 +428,7 @@ fn on_menu_event(app_handle: &AppHandle, event: MenuEvent) {
         "restart_clash" => feat::restart_clash_core(),
         "restart_app" => tauri::process::restart(&app_handle.env()),
         "quit" => {
+            println!("quit");
             feat::quit();
         }
         _ => {}