feat: add full SEO (generateMetadata, OG, Twitter Card, JSON-LD, sitemap, robots, llms.txt)

app/robots.ts

@@ -0,0 +1,19 @@
+import { MetadataRoute } from 'next';
+import { prisma } from '@/lib/db';
+
+export default async function robots(): Promise<MetadataRoute.Robots> {
+  const settings = await prisma.siteSettings.findFirst();
+  const siteUrl = settings?.siteUrl || 'https://moybeach.com';
+
+  return {
+    rules: [
+      {
+        userAgent: '*',
+        allow: '/',
+        disallow: ['/admin/', '/api/'],
+      },
+    ],
+    sitemap: `${siteUrl}/sitemap.xml`,
+    host: siteUrl,
+  };
+}