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]/template.tsx

@@ -1,10 +1,10 @@
 'use client';
 
-import { motion } from 'framer-motion';
+import { m } from 'framer-motion';
 
 export default function Template({ children }: { children: React.ReactNode }) {
   return (
-    <motion.div
+    <m.div
       initial={{ opacity: 0, y: 20, filter: 'blur(10px)' }}
       animate={{ opacity: 1, y: 0, filter: 'blur(0px)' }}
       transition={{ 
@@ -14,6 +14,6 @@ export default function Template({ children }: { children: React.ReactNode }) {
       className="w-full h-full"
     >
       {children}
-    </motion.div>
+    </m.div>
   );
 }