增加tv mode开关

src/app/tv/layout.tsx

@@ -1,12 +1,18 @@
 import { ReactNode } from 'react';
+import { notFound } from 'next/navigation';
 
 import TVRemoteReceiver from '@/components/tv/TVRemoteReceiver';
+import { isTVModeEnabled } from '@/lib/tv-mode';
 
 export const metadata = {
   title: 'TV - MoonTV Plus',
 };
 
 export default function Layout({ children }: { children: ReactNode }) {
+  if (!isTVModeEnabled()) {
+    notFound();
+  }
+
   return (
     <>
       {children}