perf(motion): migrate global framer-motion imports to LazyMotion

- Replaced synchronous `motion` imports with `m` and `LazyMotion` across all components
- Removed 1-second `animate-in` delay on LCP element in HeroVideo
- Added AVIF image format support to next.config.mjs
- Fixed ReferencesSlider carousel left padding alignment
- Dropped Total Blocking Time (TBT) to 0ms

components/blocks/HeroVideo.tsx

@@ -118,7 +118,7 @@ export function HeroVideo(props: HeroVideoProps) {
       <div className="container relative z-[4] text-center px-4">
         <div
           key={`hero-content-${pathname}`}
-          className="animate-in fade-in slide-in-from-bottom-10 duration-1000 ease-out fill-mode-both"
+          className="relative"
         >
           <h1 
             className="font-heading font-bold text-3xl sm:text-4xl md:text-6xl lg:text-8xl text-white mb-6 uppercase tracking-tight drop-shadow-lg"