Fix SEO/UX audit gaps: canonical tags, org schema, nav, header claims

Add canonical URLs and a sitewide Organization JSON-LD (linked via @id
to page-specific LocalBusiness/Service/Article schemas), move FAQ and
Reviews into the top nav, attach the 24/7 support claim to a tooltip
on the header badge instead of leaving it unexplained, drop the
unverifiable incidents_resolved stat from the hero terminal animation,
and clean up the empty-reviews state instead of showing a thin
placeholder.

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

public-site/lib/schema.js

@@ -0,0 +1,12 @@
+const SITE_URL = process.env.NEXT_PUBLIC_SITE_URL || 'https://top-sysops.ru';
+
+export function getOrganizationSchema() {
+  return {
+    '@context': 'https://schema.org',
+    '@type': 'Organization',
+    '@id': `${SITE_URL}/#organization`,
+    name: 'TopSysOps',
+    url: SITE_URL,
+    foundingDate: '2023',
+  };
+}