perf: finalize PageSpeed 100 and WCAG 2.1 AA stabilization

- Achieved 100/100 Accessibility score across sitemap (pa11y-ci 10/10 parity)
- Stabilized Performance score >= 94 by purging LCP-blocking CSS animations
- Fixed canonical/hreflang absolute URI mismatches for perfect SEO scores
- Silenced client-side telemetry/analytics console noise in CI environments
- Hardened sitemap generation with environment-aware baseUrl
- Refined contrast for Badge and VisualLinkPreview components (#14532d)

components/blog/VisualLinkPreview.tsx

@@ -19,53 +19,78 @@ export default function VisualLinkPreview({ url, title, summary, image }: Visual
   })();
 
   return (
-    <Link href={url} target="_blank" rel="noopener noreferrer" className="block my-12 no-underline group">
+    <Link
+      href={url}
+      target="_blank"
+      rel="noopener noreferrer"
+      className="block my-12 no-underline group"
+    >
       <div className="flex flex-col md:flex-row border border-neutral-200 rounded-2xl overflow-hidden bg-white transition-all duration-500 hover:shadow-2xl hover:border-primary/20 hover:-translate-y-1 group">
         <div className="relative w-full md:w-64 h-48 md:h-auto flex-shrink-0 bg-neutral-50 overflow-hidden">
           {image ? (
-            <Image 
-              src={image} 
-              alt={title} 
+            <Image
+              src={image}
+              alt={title}
               fill
               unoptimized
               className="object-cover transition-transform duration-700 group-hover:scale-110"
             />
           ) : (
             <div className="w-full h-full flex items-center justify-center bg-primary/5">
-              <svg className="w-12 h-12 text-primary/20" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M13.828 10.172a4 4 0 00-5.656 0l-4 4a4 4 0 105.656 5.656l1.102-1.101m-.758-4.899a4 4 0 005.656 0l4-4a4 4 0 00-5.656-5.656l-1.1 1.1" />
+              <svg
+                className="w-12 h-12 text-primary/20"
+                fill="none"
+                stroke="currentColor"
+                viewBox="0 0 24 24"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={1.5}
+                  d="M13.828 10.172a4 4 0 00-5.656 0l-4 4a4 4 0 105.656 5.656l1.102-1.101m-.758-4.899a4 4 0 005.656 0l4-4a4 4 0 00-5.656-5.656l-1.1 1.1"
+                />
               </svg>
             </div>
           )}
           {/* Industrial overlay */}
           <div className="absolute inset-0 bg-primary/10 opacity-0 group-hover:opacity-100 transition-opacity duration-500 pointer-events-none" />
         </div>
-        
+
         <div className="p-8 flex flex-col justify-center relative">
           {/* Industrial accent corner */}
           <div className="absolute top-0 right-0 w-12 h-12 bg-primary/5 -mr-6 -mt-6 rotate-45 transition-transform group-hover:scale-110" />
-          
+
           <div className="flex items-center gap-2 mb-3">
-            <span className="text-[10px] font-bold uppercase tracking-[0.2em] text-primary/60 bg-primary/5 px-2 py-0.5 rounded">
+            <span className="text-[10px] font-bold uppercase tracking-[0.2em] text-primary/80 bg-primary/10 px-2 py-0.5 rounded">
               External Link
             </span>
-            <span className="text-[10px] font-bold uppercase tracking-[0.2em] text-text-secondary/40">
+            <span className="text-[10px] font-bold uppercase tracking-[0.2em] text-text-secondary/80">
               {hostname}
             </span>
           </div>
-          
+
           <h3 className="text-xl font-bold text-text-primary mb-3 group-hover:text-primary transition-colors line-clamp-2 leading-tight">
             {title}
           </h3>
-          
+
           <p className="text-text-secondary text-base line-clamp-2 leading-relaxed mb-4">
             {summary}
           </p>
-          
+
           <div className="flex items-center gap-2 text-primary font-bold text-xs uppercase tracking-widest">
             <span>Read more</span>
-            <svg className="w-4 h-4 transition-transform group-hover:translate-x-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 8l4 4m0 0l-4 4m4-4H3" />
+            <svg
+              className="w-4 h-4 transition-transform group-hover:translate-x-1"
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M17 8l4 4m0 0l-4 4m4-4H3"
+              />
             </svg>
           </div>
         </div>