perf: fix massive unused JS payload by replacing synchronous framer-motion imports with LazyMotion (m) in template/error boundaries, revert HeroSection lazy load to save LCP

app/[locale]/not-found.tsx

@@ -4,7 +4,7 @@ import { useEffect } from 'react';
 import { useTranslations } from 'next-intl';
 import { Button, Heading } from '@/components/ui';
 import { Terminal, Search, Home, Mail, Activity, Cpu } from 'lucide-react';
-import { motion } from 'framer-motion';
+import { m } from 'framer-motion';
 import ClientNotFoundTracker from '@/components/analytics/ClientNotFoundTracker';
 
 export default function NotFound() {
@@ -46,7 +46,7 @@ export default function NotFound() {
       <div className="relative z-10 w-full max-w-4xl mx-auto flex flex-col items-center">
         {/* 404 Visual */}
         <div className="relative mb-12">
-          <motion.div
+          <m.div
             initial={{ opacity: 0, y: 20 }}
             animate={{ opacity: 1, y: 0 }}
             className="relative"
@@ -62,7 +62,7 @@ export default function NotFound() {
             
             {/* Search Scan Overlay */}
             <div className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 flex flex-col items-center">
-              <motion.div
+              <m.div
                 animate={{ 
                   scale: [1, 1.1, 1],
                   opacity: [0.5, 1, 0.5]
@@ -71,9 +71,9 @@ export default function NotFound() {
                 className="p-5 rounded-full bg-primary/20 border border-primary/40 backdrop-blur-md shadow-[0_0_40px_rgba(var(--color-primary),0.3)]"
               >
                 <Search className="w-10 h-10 text-primary" />
-              </motion.div>
+              </m.div>
             </div>
-          </motion.div>
+          </m.div>
         </div>
 
         <div className="grid grid-cols-1 md:grid-cols-12 gap-12 w-full items-start">