fix: keep support SEO and sitemap metadata accurate

scripts/test-website-theme.mjs

@@ -12,6 +12,8 @@ const demoCss = fs.readFileSync(path.join(repoRoot, 'website', 'styles', 'demo.c
 const landingPrimaryCss = fs.readFileSync(path.join(repoRoot, 'website', 'styles', 'landing-primary.css'), 'utf8');
 const legalCss = fs.readFileSync(path.join(repoRoot, 'website', 'styles', 'legal.css'), 'utf8');
 const joinPage = fs.readFileSync(path.join(repoRoot, 'website', 'join.html'), 'utf8');
+const siteAccessHelpPage = fs.readFileSync(path.join(repoRoot, 'website', 'site-access-help.html'), 'utf8');
+const websiteBuild = fs.readFileSync(path.join(repoRoot, 'website', 'build.cjs'), 'utf8');
 const imprintPage = fs.readFileSync(path.join(repoRoot, 'website', 'imprint.html'), 'utf8');
 const germanImprintPage = fs.readFileSync(path.join(repoRoot, 'website', 'impressum-de.html'), 'utf8');
 const alternativesIndex = fs.readFileSync(path.join(repoRoot, 'website', 'alternatives', 'index.html'), 'utf8');
@@ -67,6 +69,23 @@ if (/\bWebRTC\b|\bport 54000\b|peer-to-peer by design/i.test(llmsText)) {
 if (!llmsText.includes(`Current website release: ${websiteVersion}`)) {
   throw new Error(`llms.txt release must match website/version.json (${websiteVersion})`);
 }
+const requiredSupportSocialMetadata = [
+  'name="twitter:card" content="summary_large_image"',
+  'name="twitter:title"',
+  'name="twitter:description"',
+  'name="twitter:image"',
+  '"datePublished"',
+  '"dateModified"',
+  '"mainEntityOfPage"'
+];
+for (const metadata of requiredSupportSocialMetadata) {
+  if (!siteAccessHelpPage.includes(metadata)) {
+    throw new Error(`site-access-help.html is missing SEO metadata: ${metadata}`);
+  }
+}
+if (/<lastmod>/.test(websiteBuild) || /const today = new Date\(\)/.test(websiteBuild)) {
+  throw new Error('Sitemap must not claim synthetic modification dates for every URL');
+}
 const documentedRelayUrls = [...llmsText.matchAll(/`(wss:\/\/[^`\s]+)`/g)].map(([, value]) => new URL(value));
 const hasCanonicalPublicRelay = documentedRelayUrls.some((url) => (
   url.protocol === 'wss:' &&
@@ -180,6 +199,7 @@ if (!/animation:\s*none\s*!important/.test(reducedMotionRule)) {
 console.log('Extension mockup theme-sensitive text uses theme-aware colors');
 console.log('Landing CSS is render-blocking, single-request, and cascade-stable');
 console.log('Landing head discovers a complete and architecture-accurate llms.txt');
+console.log('Support-page social metadata and sitemap dates remain truthful');
 console.log('Website self-hosting examples include production secrets and consistent networking');
 console.log('Foreground film birds use complete, always-on wing and glide animations');
 console.log('All Getting Started mockups define explicit light-theme surfaces');

website/build.cjs

@@ -716,8 +716,6 @@ function generateSitemap(wwwDir) {
       { code: 'pt', prefix: 'pt/', hreflang: 'pt' }
     ];
 
-    const today = new Date().toISOString().split('T')[0];
-
     let xml = `<?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
         xmlns:xhtml="http://www.w3.org/1999/xhtml">`;
@@ -726,31 +724,26 @@ function generateSitemap(wwwDir) {
     xml += `
   <url>
     <loc>https://sync.koalastuff.net/imprint</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/privacy</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/site-access-help.html</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>weekly</changefreq>
     <priority>0.8</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/impressum</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
   <url>
     <loc>https://sync.koalastuff.net/de/datenschutz</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>`;
@@ -761,7 +754,6 @@ function generateSitemap(wwwDir) {
         xml += `
   <url>
     <loc>${loc}</loc>
-    <lastmod>${today}</lastmod>
     <changefreq>${changefreq}</changefreq>
     <priority>${priority}</priority>`;
         for (const alt of languages) {
@@ -794,6 +786,6 @@ function generateSitemap(wwwDir) {
     xml += `\n</urlset>\n`;
 
     fs.writeFileSync(path.join(wwwDir, 'sitemap.xml'), xml.trim() + '\n', 'utf8');
-    console.log('  ✓ Dynamically generated sitemap.xml with current date');
+    console.log('  ✓ Dynamically generated sitemap.xml without synthetic modification dates');
 }
 compile().catch(err => { console.error('Build failed:', err); process.exit(1); });

website/site-access-help.html

@@ -17,6 +17,14 @@
     <meta property="og:title" content="Fix KoalaSync website access">
     <meta property="og:description" content="Quick browser-specific steps for reconnecting KoalaSync to a video tab.">
     <meta property="og:image" content="https://sync.koalastuff.net/assets/og-image.png">
+    <meta property="og:image:width" content="1280">
+    <meta property="og:image:height" content="640">
+    <meta property="og:image:type" content="image/png">
+    <meta property="og:site_name" content="KoalaSync">
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="Fix KoalaSync website access">
+    <meta name="twitter:description" content="Quick browser-specific steps for reconnecting KoalaSync to a video tab.">
+    <meta name="twitter:image" content="https://sync.koalastuff.net/assets/og-image.png">
     <meta name="theme-color" content="#10190e">
     <script type="application/ld+json">
     {
@@ -24,8 +32,24 @@
       "@type": "TechArticle",
       "headline": "Fix KoalaSync website access",
       "description": "Restore KoalaSync access when a browser blocks the extension on a video website.",
+      "datePublished": "2026-07-15T10:24:59Z",
+      "dateModified": "2026-07-19T19:20:05Z",
       "inLanguage": "en",
       "url": "https://sync.koalastuff.net/site-access-help.html",
+      "mainEntityOfPage": {
+        "@type": "WebPage",
+        "@id": "https://sync.koalastuff.net/site-access-help.html"
+      },
+      "author": {
+        "@type": "Organization",
+        "name": "KoalaSync",
+        "url": "https://sync.koalastuff.net/"
+      },
+      "publisher": {
+        "@type": "Organization",
+        "name": "KoalaSync",
+        "url": "https://sync.koalastuff.net/"
+      },
       "isPartOf": {
         "@type": "WebSite",
         "name": "KoalaSync",