Fix: create series 페이지 직접방문 차단

src/app/create/series/page.tsx

@@ -1,16 +1,21 @@
 import SeriesForm from '@/components/create/series/SeriesForm';
 import LayoutWrapper from '@/components/shared/LayoutWrapper';
 import { checkUser } from '@/service/auth';
-import { ACCESS_TOKEN, REFRESH_TOKEN } from '@/utils/const';
+import { ACCESS_TOKEN, MAIN_PATH, REFRESH_TOKEN } from '@/utils/const';
 import { Metadata } from 'next';
-import { cookies } from 'next/headers';
+import { cookies, headers } from 'next/headers';
+import { redirect } from 'next/navigation';
 
 export const metadata: Metadata = {
   title: '시리즈 작성',
   description: '시리즈 작성하는 곳입니다.',
 };
 
 export default async function CreateSeriesPage() {
+  const headersList = headers();
+  const referer = headersList.get('referer');
+  referer === null && redirect(MAIN_PATH);
+
   const accessToken = cookies().get(ACCESS_TOKEN)?.value;
   const refreshToken = cookies().get(REFRESH_TOKEN)?.value;
   const cookie = `${ACCESS_TOKEN}=${accessToken}; ${REFRESH_TOKEN}=${refreshToken}`;