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/CertificatesBlock.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import { motion } from 'framer-motion';
+import { m, LazyMotion, domAnimation } from 'framer-motion';
 import { Container } from '@/components/ui/Container';
 import { Button } from '@/components/ui/Button';
 import { HoverShineOverlay } from '@/components/ui/HoverShineOverlay';
@@ -122,7 +122,7 @@ export function CertificatesBlock({ badge, title, description, certificates = de
       <Container className="relative z-10">
         {!hideHeader && (
           <div className="text-center max-w-3xl mx-auto mb-16">
-            <motion.div
+            <m.div
               initial={{ opacity: 0, y: 20 }}
               whileInView={{ opacity: 1, y: 0 }}
               viewport={{ once: true, margin: "-50px" }}
@@ -131,11 +131,11 @@ export function CertificatesBlock({ badge, title, description, certificates = de
               <h2 className="text-primary font-bold tracking-wider uppercase text-sm mb-3">{badgeText}</h2>
               <h3 className="font-heading text-2xl md:text-5xl font-extrabold text-neutral-dark mb-6">{titleText}</h3>
               <p className="text-lg text-neutral-600">{descriptionText}</p>
-            </motion.div>
+            </m.div>
           </div>
         )}
 
-        <motion.div 
+        <m.div 
           className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6"
           variants={containerVariants}
           initial="hidden"
@@ -144,7 +144,7 @@ export function CertificatesBlock({ badge, title, description, certificates = de
         >
           {certificates.map((cert, index) => {
             const isIso = cert.type === 'iso';
-            const Wrapper = cert.pdfUrl ? motion.a : motion.div;
+            const Wrapper = cert.pdfUrl ? m.a : m.div;
             const wrapperProps = cert.pdfUrl ? {
               href: encodeURI(cert.pdfUrl),
               target: "_blank",
@@ -219,7 +219,7 @@ export function CertificatesBlock({ badge, title, description, certificates = de
               </Wrapper>
             );
           })}
-        </motion.div>
+        </m.div>
       </Container>
     </section>
   );