Fix Google Search appearance: site name, logo, and favicon

- Add domain fallback to WebSite alternateName array per Google docs
- Fix Organization name from 'Seqra Team' to 'OpenTaint' for consistent signals
- Add 512x512 logo.png with solid white background for Organization structured data
- Regenerate apple-touch-icon.png with full logo on white background
- Add sameAs links and 512x512 icon to site.webmanifest

Author: misonijnik

public/apple-touch-icon.png

@@ -1,6 +1,6 @@
 {
   "name": "OpenTaint",
-  "short_name": "opentaint",
+  "short_name": "OpenTaint",
   "icons": [
     {
       "src": "/favicon.svg",
@@ -11,6 +11,11 @@
       "src": "/apple-touch-icon.png",
       "sizes": "180x180",
       "type": "image/png"
+    },
+    {
+      "src": "/logo.png",
+      "sizes": "512x512",
+      "type": "image/png"
     }
   ],
   "theme_color": "#CA2121",

public/logo.png

@@ -13,15 +13,15 @@ const structuredData = [
     "@context": "https://schema.org",
     "@type": "WebSite",
     name: siteConfig.title,
-    alternateName: "opentaint",
+    alternateName: ["opentaint", "opentaint.org"],
     url: siteConfig.url,
   },
   {
     "@context": "https://schema.org",
     "@type": "Organization",
-    name: siteConfig.author,
+    name: siteConfig.title,
     url: siteConfig.url,
-    logo: `${siteConfig.url}/apple-touch-icon.png`,
+    logo: `${siteConfig.url}/logo.png`,
     sameAs: [
       siteConfig.github,
       siteConfig.discord,