use route group

src/app/onboarding/layout.tsx

@@ -1,13 +0,0 @@
-export default function OnboardingLayout({ children }: { children: React.ReactNode }) {
-  return (
-    <div className="h-screen w-screen bg-zinc-50 text-zinc-900 dark:bg-black dark:text-white">
-      <div className="flex h-screen w-full flex-col">
-        <div
-          data-tauri-drag-region
-          className="relative h-11 shrink-0 border-b border-zinc-100 bg-white dark:border-zinc-900 dark:bg-black"
-        ></div>
-        <div className="relative flex min-h-0 w-full flex-1">{children}</div>
-      </div>
-    </div>
-  );
-}