perf(images): remove AVIF format to prevent massive CPU spikes and TTFB delays during on-the-fly Next.js image optimization

components/blocks/HeroVideo.tsx

@@ -34,7 +34,7 @@ export function HeroVideo(props: HeroVideoProps) {
 
   let defaultPoster = "/assets/photos/DJI_0048.JPG";
   if (videoUrl && videoUrl.endsWith('.mp4')) {
-    defaultPoster = videoUrl.replace('.mp4', '-poster.jpg');
+    defaultPoster = videoUrl.replace('.mp4', '-poster.webp');
   }
 
   const posterSrc = props.backgroundImage?.url || props.posterImage?.url || data?.posterImage?.url || defaultPoster;
@@ -88,7 +88,7 @@ export function HeroVideo(props: HeroVideoProps) {
         fill
         className="object-cover z-[1] pointer-events-none"
         sizes="100vw"
-        quality={25}
+        unoptimized={true}
         priority
         fetchPriority="high"
       />

next.config.mjs

@@ -449,7 +449,7 @@ const nextConfig = {
   },
   images: {
     qualities: [25, 50, 75, 100],
-    formats: ['image/avif', 'image/webp'],
+    formats: ['image/webp'],
     deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
     remotePatterns: [
       {