Add player leaderboard and homepage preview

components/SiteNav.tsx

@@ -0,0 +1,31 @@
+"use client";
+import Link from "next/link";
+import { usePathname } from "next/navigation";
+
+const links = [
+  ["/servers", "Play & maps"],
+  ["/leaderboard", "Leaderboard"],
+  ["/downloads", "Downloads"],
+  ["/about", "Guide"],
+] as const;
+
+export function SiteNav() {
+  const pathname = usePathname();
+  return (
+    <nav aria-label="Main navigation">
+      {links.map(([href, label]) => (
+        <Link
+          key={href}
+          href={href}
+          aria-current={
+            pathname === href || pathname.startsWith(`${href}/`)
+              ? "page"
+              : undefined
+          }
+        >
+          {label}
+        </Link>
+      ))}
+    </nav>
+  );
+}