수정

src/app/posts/[id]/page.tsx

@@ -23,12 +23,44 @@ export default async function PostDetail({ params }: { params: any }) {
   const parsed = settingRow ? JSON.parse(settingRow.value as string) : {};
   const showBanner: boolean = parsed.showBanner ?? true;
 
+  // 현재 게시글이 속한 카테고리의 보드들을 서브카테고리로 구성
+  let subItems:
+    | { id: string; name: string; href: string }[]
+    | undefined = undefined;
+  if (post?.boardId) {
+    const categories = await prisma.boardCategory.findMany({
+      where: { status: "active" },
+      orderBy: [{ sortOrder: "asc" }, { createdAt: "asc" }],
+      include: {
+        boards: {
+          where: { status: "active" },
+          orderBy: [{ sortOrder: "asc" }, { createdAt: "asc" }],
+          select: { id: true, name: true, slug: true },
+        },
+      },
+    });
+    const categoryOfPost = categories.find((c) =>
+      c.boards.some((b) => b.id === post.boardId)
+    );
+    if (categoryOfPost) {
+      subItems = categoryOfPost.boards.map((b) => ({
+        id: b.id,
+        name: b.name,
+        href: `/boards/${b.slug}`,
+      }));
+    }
+  }
+
   return (
     <div className="space-y-6">
       {/* 상단 배너 */}
       {showBanner && (
         <section>
-          <HeroBanner />
+          <HeroBanner
+            subItems={subItems}
+            activeSubId={post?.boardId}
+            showPartnerCats={false}
+          />
         </section>
       )}
 

src/app/posts/new/page.tsx

@@ -6,6 +6,8 @@ import { useToast } from "@/app/components/ui/ToastProvider";
 import { UploadButton } from "@/app/components/UploadButton";
 import { Editor } from "@/app/components/Editor";
 import { HeroBanner } from "@/app/components/HeroBanner";
+import useSWR from "swr";
+import Link from "next/link";
 
 export default function NewPostPage() {
   const router = useRouter();
@@ -16,6 +18,7 @@ export default function NewPostPage() {
   const [form, setForm] = useState({ boardId: initialBoardId, title: "", content: "" });
   const [isSecret, setIsSecret] = useState(false);
   const [loading, setLoading] = useState(false);
+  const { data: meData } = useSWR<{ user: { userId: string } | null }>("/api/me", (u: string) => fetch(u).then((r) => r.json()));
   async function submit() {
     try {
       if (!form.boardId.trim()) {
@@ -52,6 +55,40 @@ export default function NewPostPage() {
   }
   const plainLength = (form.content || "").replace(/<[^>]*>/g, "").length;
   const MAX_LEN = 10000;
+  if (!meData) {
+    return (
+      <div className="space-y-6">
+        <section>
+          <HeroBanner />
+        </section>
+        <section className="mx-auto max-w-2xl bg-white rounded-2xl border border-neutral-300 px-6 sm:px-8 py-8 text-center">
+          <div className="text-lg font-semibold text-neutral-900">확인 중...</div>
+        </section>
+      </div>
+    );
+  }
+  if (!meData.user) {
+    const next = `/posts/new${sp.toString() ? `?${sp.toString()}` : ""}`;
+    return (
+      <div className="space-y-6">
+        <section>
+          <HeroBanner />
+        </section>
+        <section className="mx-auto max-w-2xl bg-white rounded-2xl border border-neutral-300 px-6 sm:px-8 py-8 text-center">
+          <div className="text-[22px] md:text-[26px] font-semibold text-neutral-900">로그인이 필요합니다</div>
+          <p className="mt-2 text-neutral-600">게시글 작성은 로그인 후 이용할 수 있어요.</p>
+          <div className="mt-6">
+            <Link
+              href={`/login?next=${encodeURIComponent(next)}`}
+              className="inline-flex items-center px-5 h-12 rounded-xl border border-neutral-300 text-neutral-800 hover:bg-neutral-100"
+            >
+              로그인 하러 가기
+            </Link>
+          </div>
+        </section>
+      </div>
+    );
+  }
   return (
     <div className="space-y-6">
       <section>