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

next.config.mjs

@@ -438,7 +438,7 @@ const nextConfig = {
   },
   images: {
     qualities: [25, 50, 75, 100],
-    formats: ['image/webp'],
+    formats: ['image/avif', 'image/webp'],
     deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
     remotePatterns: [
       {