seo: unify domain to aramejan.com; real logo, favicon, og-image; assetlinks; fix canonical/sitemap/robots

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/components/SEOHead.jsx

@@ -5,7 +5,7 @@ export function SEOHead({
   canonical,
   ogImage = ''
 }) {
-  const siteUrl = 'https://aramland.approagency.ir/';
+  const siteUrl = 'https://aramejan.com';
   
   return (
     <>
@@ -19,14 +19,14 @@ export function SEOHead({
       <meta property="og:title" content={title} />
       <meta property="og:description" content={description} />
       <meta property="og:url" content={`${siteUrl}${canonical}`} />
-      <meta property="og:image" content={ogImage || `${siteUrl}og-image.jpg`} />
+      <meta property="og:image" content={ogImage || `${siteUrl}/og-image.jpg`} />
       <meta property="og:type" content="website" />
       <meta property="og:locale" content="fa_IR" />
       
       {/* Twitter */}
       <meta name="twitter:title" content={title} />
       <meta name="twitter:description" content={description} />
-      <meta name="twitter:image" content={ogImage || `${siteUrl}og-image.jpg`} />
+      <meta name="twitter:image" content={ogImage || `${siteUrl}/og-image.jpg`} />
       <meta name="twitter:card" content="summary_large_image" />
     </>
   );