Initial commit: dating app admin panel (Next.js)

Admin login, category/option and profile-question management, and
the pending-user review workflow (list, full profile detail,
approve/reject with a reason shown back to the user).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/components/ui/ErrorBanner.tsx

@@ -0,0 +1,11 @@
+import { AlertCircle } from "lucide-react";
+
+export function ErrorBanner({ message }: { message?: string | null }) {
+  if (!message) return null;
+  return (
+    <div className="flex items-start gap-2 rounded-(--radius-sm) bg-red-50 border-2 border-red-100 text-(--color-status-error) px-4 py-3 text-[13px] font-medium">
+      <AlertCircle size={16} className="shrink-0 mt-0.5" />
+      <span>{message}</span>
+    </div>
+  );
+}