feat: add admin accounts and image templates

app/accounts/page.tsx

@@ -0,0 +1,9 @@
+import { AccountManager } from "@/components/account-manager";
+import { requireAdminUser } from "@/lib/server/auth/current-user";
+
+export const dynamic = "force-dynamic";
+
+export default async function AccountsPage() {
+  await requireAdminUser();
+  return <AccountManager />;
+}