fix: disable route prefetching app-wide to avoid spurious requests

Wrap next/link in a shared Link component that ships prefetch=false by
default, so no route is ever prefetched (viewport or hover) anymore, and
drop the DNS prefetch hint. Removes hidden background requests that were
the source of intermittent issues.

src/app/(site)/me/page.tsx

@@ -1,9 +1,9 @@
 import { and, asc, count, desc, eq, gt, or } from "drizzle-orm";
 import Image from "next/image";
-import Link from "next/link";
 import { redirect } from "next/navigation";
 import type { CSSProperties, ReactNode } from "react";
 import { claimReferral } from "@/actions/referral";
+import Link from "@/components/link";
 
 import { Reveal } from "@/components/motion-reveal";
 import { UserAvatarThumbnail } from "@/components/shared/user-avatar-thumbnail";
@@ -282,7 +282,6 @@ export default async function MePage({
 							/>
 							<Link
 								href="/client"
-								prefetch={false}
 								className="btn-shine flex items-center justify-center gap-1.5 rounded-xl border py-2 px-4 font-extrabold text-xs transition-all duration-200 hover:scale-[1.02] active:scale-95 shadow-lg"
 								style={{
 									background: "var(--color-primary)",