Refactor authentication system: replace NextAuth with custom login/logout/session handling, improve cookie management, and enhance error handling

app/mod/de-cu/page.tsx

@@ -1,13 +1,8 @@
-import { getServerSession } from "next-auth/next"
-import { authOptions } from "@/lib/auth"
-import { redirect } from "next/navigation"
+import { requireModSessionUser } from "@/lib/server-auth"
 import { RecommendationClient } from "./recommendation-client"
 
 export default async function ModRecommendationPage() {
-  const session = await getServerSession(authOptions)
-  if (!session || (session.user.role !== "MOD" && session.user.role !== "ADMIN")) {
-    redirect("/")
-  }
+  await requireModSessionUser()
 
   return <RecommendationClient />
 }