sum more SEO changes

server.cjs

@@ -2365,6 +2365,10 @@ function escapeHtml(value) {
     .replace(/'/g, ''')
 }
 
+function stripSiteTitle(title) {
+  return String(title || '').replace(/\s+\|\s+Toothless' TSS Bot$/, '')
+}
+
 function decodeRouteSegment(value) {
   try {
     return decodeURIComponent(value || '').replace(/\+/g, ' ').trim()
@@ -2617,6 +2621,54 @@ function routeSeo(pathname) {
   return byPath[cleanPath] || notFoundSeo
 }
 
+function routeFallbackSections(seo) {
+  const sections = [
+    { href: '/teams', label: 'TSS team leaderboard' },
+    { href: '/players', label: 'TSS player leaderboard' },
+    { href: '/battle-logs', label: 'Battle logs' },
+    { href: '/tournaments', label: 'Tournaments' },
+    { href: '/blog', label: 'Blog' },
+  ]
+
+  if (seo.status === 404) {
+    return [
+      '<p>Use the links below to browse the live War Thunder Tournament Service leaderboards, battle logs, tournament brackets, and updates.</p>',
+      `<nav aria-label="Main sections"><ul>${sections.map((section) => `<li><a href="${section.href}">${escapeHtml(section.label)}</a></li>`).join('')}</ul></nav>`,
+    ].join('\n')
+  }
+
+  if (seo.type === 'BlogPosting') {
+    const published = seo.publishedAt ? `<p>Published ${escapeHtml(seo.publishedAt)} by ${escapeHtml(seo.author || "Toothless' TSS Bot")}.</p>` : ''
+    return [
+      published,
+      '<p>Read more War Thunder TSS Bot news, feature updates, tournament tracking notes, and community announcements.</p>',
+      '<p><a href="/blog">Browse all blog posts</a></p>',
+    ].filter(Boolean).join('\n')
+  }
+
+  if (seo.path === '/') {
+    return [
+      '<p>Toothless TSS Bot tracks War Thunder Tournament Service activity across teams, players, battle logs, tournaments, and squadron profiles.</p>',
+      `<nav aria-label="Main sections"><ul>${sections.map((section) => `<li><a href="${section.href}">${escapeHtml(section.label)}</a></li>`).join('')}</ul></nav>`,
+    ].join('\n')
+  }
+
+  return [
+    '<p>This page is part of Toothless TSS Bot, a War Thunder Tournament Service tracker for leaderboards, squadron profiles, battle logs, player stats, and tournament brackets.</p>',
+    `<nav aria-label="Related sections"><ul>${sections.filter((section) => section.href !== seo.path).map((section) => `<li><a href="${section.href}">${escapeHtml(section.label)}</a></li>`).join('')}</ul></nav>`,
+  ].join('\n')
+}
+
+function routeFallbackHtml(seo) {
+  return [
+    '<main id="seo-fallback">',
+    `<h1>${escapeHtml(stripSiteTitle(seo.title))}</h1>`,
+    `<p>${escapeHtml(seo.description)}</p>`,
+    routeFallbackSections(seo),
+    '</main>',
+  ].join('\n')
+}
+
 function routeStructuredData(origin, seo, canonicalUrl) {
   const siteId = `${origin}/#website`
   const pageId = `${canonicalUrl}#webpage`
@@ -2661,7 +2713,7 @@ function routeStructuredData(origin, seo, canonicalUrl) {
         ...(seo.path === '/' ? [] : [{
           '@type': 'ListItem',
           position: 2,
-          name: seo.title.replace(/\s+\|\s+Toothless' TSS Bot$/, ''),
+          name: stripSiteTitle(seo.title),
           item: canonicalUrl,
         }]),
       ],
@@ -2672,7 +2724,7 @@ function routeStructuredData(origin, seo, canonicalUrl) {
     items.push({
       '@context': 'https://schema.org',
       '@type': 'BlogPosting',
-      headline: seo.title.replace(/\s+\|\s+Toothless' TSS Bot$/, ''),
+      headline: stripSiteTitle(seo.title),
       description: seo.description,
       url: canonicalUrl,
       image: imageUrl,
@@ -2725,6 +2777,7 @@ function htmlWithSeo(req, data) {
     .replaceAll('__SEO_MODIFIED_TIME__', escapeHtml(seo.publishedAt || ''))
     .replaceAll('__SEO_JSON_LD__', routeStructuredData(origin, seo, canonicalUrl).replace(/</g, '\\u003c'))
     .replaceAll('__TURNSTILE_SESSION__', isTurnstileSessionVerified(req) ? 'verified' : 'required')
+    .replace('<div id="root"></div>', `<div id="root">\n${routeFallbackHtml(seo)}\n</div>`)
 }
 
 function requestPathname(req) {