fix

Author: dlekdns08

public/robots.txt

@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://koala.ai.kr/sitemap.xml

src/app/sitemap.ts

@@ -0,0 +1,25 @@
+import type { MetadataRoute } from "next";
+import { getAllPosts } from "@/lib/posts";
+
+const BASE = process.env.NEXT_PUBLIC_SITE_URL ?? "https://koala.ai.kr";
+
+export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
+  const posts = await getAllPosts();
+
+  const postEntries: MetadataRoute.Sitemap = posts.map((post) => ({
+    url: `${BASE}/posts/${post.slug}`,
+    lastModified: new Date(post.date),
+    changeFrequency: "monthly",
+    priority: 0.8,
+  }));
+
+  const staticPages: MetadataRoute.Sitemap = [
+    { url: BASE,              lastModified: new Date(), changeFrequency: "weekly",  priority: 1.0 },
+    { url: `${BASE}/posts`,   lastModified: new Date(), changeFrequency: "daily",   priority: 0.9 },
+    { url: `${BASE}/about`,   lastModified: new Date(), changeFrequency: "monthly", priority: 0.5 },
+    { url: `${BASE}/game`,    lastModified: new Date(), changeFrequency: "monthly", priority: 0.4 },
+    { url: `${BASE}/stats`,   lastModified: new Date(), changeFrequency: "daily",   priority: 0.4 },
+  ];
+
+  return [...staticPages, ...postEntries];
+}