fix: use page to provide robot txt

src/pages/robots.txt.ts

@@ -0,0 +1,26 @@
+import type { APIRoute } from 'astro'
+import { siteConfig } from '../site.config'
+
+const robotsTxt = `
+User-agent: *
+Allow: /
+
+HOST: ${siteConfig.site}
+
+# Sitemaps
+Sitemap: ${siteConfig.site}/sitemap.xml
+
+# Disallow system and error pages
+Disallow: /api/
+Disallow: /_astro/
+Disallow: /404
+Disallow: /500
+`
+
+export const GET: APIRoute = () => {
+  return new Response(robotsTxt.trim(), {
+    headers: {
+      'Content-Type': 'text/plain; charset=utf-8',
+    },
+  })
+}