Initial commit: TopSysOps site + admin panel

Multi-page public site (Next.js), Node/Express backend with Postgres,
and Vite admin/account app, restructured from a single-page layout
into dedicated service, promotions, cases, about, FAQ, and blog pages
for SEO.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013otXCiTZsxdZ4SJKZ9wUky

public-site/app/robots.js

@@ -0,0 +1,12 @@
+const SITE_URL = process.env.NEXT_PUBLIC_SITE_URL || 'https://top-sysops.ru';
+
+export default function robots() {
+  return {
+    rules: {
+      userAgent: '*',
+      allow: '/',
+      disallow: ['/admin', '/account'],
+    },
+    sitemap: `${SITE_URL}/sitemap.xml`,
+  };
+}