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/app/layout.jsx

@@ -2,6 +2,7 @@ import './globals.css';
 import { ThemeProvider } from '../components/ThemeProvider.jsx';
 import SupportChat from '../components/SupportChat.jsx';
 import VisitTracker from '../components/VisitTracker.jsx';
+import { getOrganizationSchema } from '../lib/schema.js';
 
 const SITE_URL = process.env.NEXT_PUBLIC_SITE_URL || 'https://top-sysops.ru';
 
@@ -33,6 +34,8 @@ export default function RootLayout({ children }) {
       <head>
         {/* eslint-disable-next-line react/no-danger */}
         <script dangerouslySetInnerHTML={{ __html: NO_FLASH_SCRIPT }} />
+        {/* eslint-disable-next-line react/no-danger */}
+        <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(getOrganizationSchema()) }} />
       </head>
       <body className="bg-slate-50 dark:bg-slate-950 text-slate-900 dark:text-slate-100">
         <ThemeProvider>{children}</ThemeProvider>