fix: correct syntax error in page.tsx and add privacy/terms pages for OAuth compliance

app/page.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import Link from "next/link";
+import Image from "next/image";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/Card";
 
 export const metadata: Metadata = {
@@ -41,7 +42,7 @@ export default function HomePage() {
             center.
           </p>
         </div>
-      </section>
+      </main>
 
       {/* Prizes Section */}
       <section className="mb-16 bg-gradient-to-r from-primary-50 to-green-50 py-12 -mx-4 px-4 sm:-mx-6 sm:px-6 lg:-mx-8 lg:px-8">