fix(seo): audit and fix SEO across all pages

- ProductsPage: align <title> with og:title ("All Windows ISO Releases")
- Disclaimer + PrivacyPolicy: add noindex (legal/thin pages shouldn't rank)
- ProductDetailPage: improve auto-generated meta description wording;
  add SoftwareApplication JSON-LD to match EvalDetailPage
- HomePage: update JSON-LD description to include Windows Server

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/DisclaimerPage.tsx

@@ -20,6 +20,7 @@ export default function DisclaimerPage() {
       <meta property="og:title" content="Disclaimer | Windows ISO Downloader" />
       <meta property="og:description" content="Legal disclaimer for MSDL. Not affiliated with Microsoft Corporation." />
       <meta property="og:url" content={`${SITE_URL}/disclaimer`} />
+      <meta name="robots" content="noindex, follow" />
 
       <div className="max-w-2xl mx-auto px-4 pt-12 pb-10">
         <motion.div

frontend/src/pages/HomePage.tsx

@@ -66,7 +66,7 @@ const jsonLd = {
   applicationCategory: 'UtilitiesApplication',
   operatingSystem: 'Web',
   url: SITE_URL,
-  description: 'Download official Microsoft Windows ISO files for Windows 11, 10, and 8.1. Direct links from Microsoft CDN. Free, no registration.',
+  description: 'Download official Microsoft Windows ISO files for Windows 11, 10, 8.1, and Windows Server. Direct links from Microsoft CDN. Free, no registration.',
   offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
 }
 

frontend/src/pages/PrivacyPolicyPage.tsx

@@ -20,6 +20,7 @@ export default function PrivacyPolicyPage() {
       <meta property="og:title" content="Privacy Policy | Windows ISO Downloader" />
       <meta property="og:description" content="Privacy policy for MSDL. We log no data, use no trackers, and proxy no files." />
       <meta property="og:url" content={`${SITE_URL}/privacy-policy`} />
+      <meta name="robots" content="noindex, follow" />
 
       <div className="max-w-2xl mx-auto px-4 pt-12 pb-10">
         <motion.div

frontend/src/pages/ProductDetailPage.tsx

@@ -75,7 +75,7 @@ export default function ProductDetailPage() {
     : hasCatalogError
     ? 'Failed to load product catalog.'
     : productName
-    ? `Download official ISO image for ${productName}. Direct links pulled securely from Microsoft CDN servers.`
+    ? `Download the official ${productName} ISO directly from Microsoft's CDN. No registration, no proxy — real-time signed links.`
     : ''
 
   const canonicalUrl = `${SITE_URL}/product/${productId}`
@@ -90,6 +90,17 @@ export default function ProductDetailPage() {
     ],
   } : null
 
+  const softwareJsonLd = productName && !isNotFound && !hasCatalogError ? {
+    '@context': 'https://schema.org',
+    '@type': 'SoftwareApplication',
+    name: productName,
+    operatingSystem: 'Windows',
+    applicationCategory: 'OperatingSystem',
+    url: canonicalUrl,
+    description: pageDescription,
+    offers: { '@type': 'Offer', price: '0', priceCurrency: 'USD' },
+  } : null
+
   // Load product name + build string
   useEffect(() => {
     setBuildStr('')
@@ -209,6 +220,9 @@ export default function ProductDetailPage() {
       {breadcrumbJsonLd && (
         <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(breadcrumbJsonLd) }} />
       )}
+      {softwareJsonLd && (
+        <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(softwareJsonLd) }} />
+      )}
 
       <div className="max-w-2xl mx-auto px-5 pt-12 pb-10">
         {/* Back */}

frontend/src/pages/ProductsPage.tsx

@@ -36,7 +36,7 @@ export default function ProductsPage() {
 
   return (
     <>
-      <title>All Windows Releases | Windows ISO Downloader</title>
+      <title>All Windows ISO Releases | Windows ISO Downloader</title>
       <meta name="description" content="Browse all official Microsoft Windows ISO releases available for direct download. Windows 11, 10, and 8.1." />
       <link rel="canonical" href={`${SITE_URL}/products`} />
       <meta property="og:title" content="All Windows ISO Releases | Windows ISO Downloader" />