fix: keep support SEO and sitemap metadata accurate

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",