refactor: serve static frontend with Go APIs

app/auth/admin-login/page.tsx

@@ -1,11 +1,5 @@
-import { redirect } from "next/navigation";
+import { ClientRedirect } from "@/components/browser-auth";
 
-export default async function AdminLoginPage({
-  searchParams
-}: {
-  searchParams?: Promise<Record<string, string | string[] | undefined>>;
-}) {
-  const params = await searchParams;
-  const next = Array.isArray(params?.next) ? params?.next[0] : params?.next;
-  redirect(next ? `/auth/login?next=${encodeURIComponent(next)}` : "/auth/login");
+export default function AdminLoginPage() {
+  return <ClientRedirect to="/auth/login" forwardNext />;
 }