perf upgrade

src/app/router.tsx

@@ -29,6 +29,7 @@ export function getRouter() {
       fullWidth: false,
     },
     defaultPreload: "intent",
+    defaultPreloadStaleTime: 60_000,
     defaultErrorComponent: DefaultCatchBoundary,
     scrollRestoration: true,
     defaultViewTransition: false,

src/app/routes/__root.tsx

@@ -153,6 +153,9 @@ export const Route = createRootRouteWithContext<{
 function RootComponent() {
   React.useEffect(() => {
     ensureSuperTokensFrontend();
+    if (import.meta.env.PROD && 'serviceWorker' in navigator) {
+      navigator.serviceWorker.register('/sw.js').catch(() => {});
+    }
   }, []);
 
   return (