fix error line

src/pages/admin/Login.jsx

@@ -20,7 +20,7 @@ export default function AdminLogin() {
 
   const [form, setForm] = useState({ email: DEMO_EMAIL, password: '', remember: true });
   const [showPassword, setShowPassword] = useState(false);
-  const [errors, setErrors] = useState({});
+  const [errors, setErrors] = useState(/** @type {{ email?: string, password?: string }} */ ({}));
   const [authError, setAuthError] = useState('');
   const [status, setStatus] = useState('idle');