Initial commit

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F22Ms5Cxam5UHyxaCrtZzu

app/robots.ts

@@ -0,0 +1,18 @@
+import type { MetadataRoute } from "next";
+
+import { SITE_ORIGIN } from "@/lib/site";
+
+/**
+ * `/robots.txt` (engineering.md F10). Allows all crawlers, points to the
+ * sitemap, and disallows the cart + API surfaces.
+ */
+export default function robots(): MetadataRoute.Robots {
+  return {
+    rules: {
+      userAgent: "*",
+      allow: "/",
+      disallow: ["/cart", "/api/"],
+    },
+    sitemap: `${SITE_ORIGIN}/sitemap.xml`,
+  };
+}