Cleanup: fix 2,659 dead internal URLs, repair canonicals, drop dead host leftovers

No visible change — links, canonicals and dead tags only.

- 155 path rewrites (case drift from the provider move): /Odoo-Hosting/ ->
  /odoo-hosting/, /odoo-ai/ -> /odoo-ia/, /Odoo/... -> /odoo/...; applied in
  href/src, og:url and JSON-LD alike. The origin is case-sensitive, so these
  were live 404s.
- canonicals: 93 pointed at a case variant that 404s, 43 pointed at a path that
  no longer exists; the first now point at the real URL, the second are
  self-canonical. Cross-locale canonicals were left alone (strategy, not a bug).
- removed 1,197 dead <link rel=alternate icon href=/favicon.ico> (file never
  existed), 96 dead /styles/*.css links (Next.js leftovers) and 3
  /_vercel/insights scripts (previous host's analytics).
- deleted unused duplicates: index-optimized.html, index-performance.html,
  add-performance.html, a 2.1 MB duplicate portrait, and the old build scripts
  (server-upstash*.js, server-optimized.js, minify-assets.js, optimize-all.js,
  fix-canonicals.ps1).

broken internal links: 4,029 -> 1,370 occurrences.

en/odoo-hosting/odoo-hosting-uk-2026/index.html

@@ -6,8 +6,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <link rel="icon" type="image/svg+xml" href="/favicon.svg">
-    <link rel="alternate icon" href="/favicon.ico">
-    <title>Odoo Hosting UK 2026 | Odoo Expertos</title>
+<title>Odoo Hosting UK 2026 | Odoo Expertos</title>
 
     <meta name="description" content="Comprehensive guide to Odoo hosting in the UK for 2026. Compare 15+ providers with UK data centres, Brexit-compliant solutions, GDPR comp - Odoo Hosting UK 2026 | EN">
     <meta name="keywords" content="odoo hosting uk, odoo hosting united kingdom, uk data centre odoo, british odoo hosting, odoo gdpr compliant, odoo brexit, odoo cloud uk, managed odoo hosting uk, odoo vps uk, odoo enterprise uk">
@@ -813,7 +812,7 @@
     </script>
 </head>
 <body>
-    <div id="header"><header class="site-header"><nav class="navbar"><div class="container"><div class="nav-brand"><a href="/en/" class="logo"><span class="logo-text">Odoo Expertos</span></a></div><button class="nav-toggle" aria-label="Toggle navigation"><span></span><span></span><span></span></button><div class="nav-menu"><ul class="nav-list"><li><a href="/en/">Home</a></li><li><a href="/en/odoo/">Odoo</a></li><li><a href="/en/odoo-ia/">Odoo AI</a></li><li><a href="/en/odoo-hosting/">Odoo Hosting</a></li><li><a href="/en/mapa-del-sitio/">Sitemap</a></li></ul></div></div></nav></header></div><button class="nav-toggle" aria-label="Toggle navigation"><span></span><span></span><span></span></button><div class="nav-menu"><ul class="nav-list"><li><a href="/en/">Home</a></li><li><a href="/en/odoo/">Odoo</a></li><li><a href="/en/odoo-ia/">Odoo AI</a></li><li><a href="/en/odoo-hosting/">Odoo Hosting</a></li><li><a href="/en/mapa-del-sitio/">Sitemap</a></li></ul></div></div></nav></header></div>
+    <div id="header"><header class="site-header"><nav class="navbar"><div class="container"><div class="nav-brand"><a href="/en/" class="logo"><span class="logo-text">Odoo Expertos</span></a></div><button class="nav-toggle" aria-label="Toggle navigation"><span></span><span></span><span></span></button><div class="nav-menu"><ul class="nav-list"><li><a href="/en/">Home</a></li><li><a href="/en/odoo/">Odoo</a></li><li><a href="/en/odoo-ia/">Odoo AI</a></li><li><a href="/en/odoo-hosting/">Odoo Hosting</a></li><li><a href="/mapa-del-sitio/">Sitemap</a></li></ul></div></div></nav></header></div><button class="nav-toggle" aria-label="Toggle navigation"><span></span><span></span><span></span></button><div class="nav-menu"><ul class="nav-list"><li><a href="/en/">Home</a></li><li><a href="/en/odoo/">Odoo</a></li><li><a href="/en/odoo-ia/">Odoo AI</a></li><li><a href="/en/odoo-hosting/">Odoo Hosting</a></li><li><a href="/mapa-del-sitio/">Sitemap</a></li></ul></div></div></nav></header></div>
 
     <!-- Breadcrumbs -->
     <nav class="breadcrumbs">
@@ -1444,7 +1443,7 @@
     <!-- EEAT Author Section -->
     <div id="eeat-section"></div>
 
-    <div id="footer"><footer class="site-footer"><div class="container"><div class="footer-cols"><div><strong>Odoo Expertos</strong></div><nav class="footer-nav"><a href="/en/">Home</a><a href="/en/odoo/">Odoo</a><a href="/en/odoo-ia/">Odoo AI</a><a href="/en/odoo-hosting/">Odoo Hosting</a><a href="/en/mapa-del-sitio/">Sitemap</a></nav></div><div class="footer-bottom"><small>&copy; 2026 Odoo Expertos</small></div></div></footer></div><nav class="footer-nav"><a href="/en/">Home</a><a href="/en/odoo/">Odoo</a><a href="/en/odoo-ia/">Odoo AI</a><a href="/en/odoo-hosting/">Odoo Hosting</a><a href="/en/mapa-del-sitio/">Sitemap</a></nav></div><div class="footer-bottom"><small>&copy; 2026 Odoo Expertos</small></div></div></footer></div>
+    <div id="footer"><footer class="site-footer"><div class="container"><div class="footer-cols"><div><strong>Odoo Expertos</strong></div><nav class="footer-nav"><a href="/en/">Home</a><a href="/en/odoo/">Odoo</a><a href="/en/odoo-ia/">Odoo AI</a><a href="/en/odoo-hosting/">Odoo Hosting</a><a href="/mapa-del-sitio/">Sitemap</a></nav></div><div class="footer-bottom"><small>&copy; 2026 Odoo Expertos</small></div></div></footer></div><nav class="footer-nav"><a href="/en/">Home</a><a href="/en/odoo/">Odoo</a><a href="/en/odoo-ia/">Odoo AI</a><a href="/en/odoo-hosting/">Odoo Hosting</a><a href="/mapa-del-sitio/">Sitemap</a></nav></div><div class="footer-bottom"><small>&copy; 2026 Odoo Expertos</small></div></div></footer></div>
 
     <!-- Scripts -->
     <script src="/js/language-router.js"></script>