feat: integrate Cloudinary image upload, Instagram Feed, and fix Next.js warnings

app/admin/(auth)/login/page.tsx

@@ -0,0 +1,13 @@
+import LoginClient from "@/components/admin/LoginClient";
+import { getAuthCookie } from "@/lib/auth";
+import { redirect } from "next/navigation";
+
+export default async function LoginPage() {
+  const admin = await getAuthCookie();
+  
+  if (admin) {
+    redirect("/admin");
+  }
+
+  return <LoginClient />;
+}