feat: polish motion with stronger easing, press feedback and reduced motion (#73)

- Override Tailwind ease-out/ease-in-out with stronger curves, add ease-drawer
- hoverOnlyWhenSupported so hover styles never stick on touch devices
- Replace transition-all with explicit properties across the public UI
- Press feedback via active:scale-[0.97] instead of hover:scale-105
- Global prefers-reduced-motion handling (CSS + MotionConfig reducedMotion="user")
- Mobile menu is a real drawer: stays mounted, inert when closed, Escape closes
- Progress and music bars animate scaleX/scaleY instead of width/height
- Fix undefined animate-spin-slow, contain hero CTA shine with overflow-hidden

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/components/About.tsx

@@ -167,7 +167,7 @@ const About = () => {
                 <h3 className="text-xl sm:text-2xl font-black text-stone-900 dark:text-stone-50 flex items-center gap-2 sm:gap-3 uppercase tracking-tighter">
                   <BookOpen className="text-liquid-purple" size={24} /> {at("library")}
                 </h3>
-                <Link href={`/${locale}/books`} className="group/link flex items-center gap-2 text-stone-900 dark:text-stone-100 font-black border-b-2 border-stone-900 dark:border-stone-100 pb-1 hover:opacity-70 transition-all">
+                <Link href={`/${locale}/books`} className="group/link flex items-center gap-2 text-stone-900 dark:text-stone-100 font-black border-b-2 border-stone-900 dark:border-stone-100 pb-1 hover:opacity-70 transition-opacity">
                   {at("viewAll")} <ArrowRight size={14} className="group-hover/link:translate-x-1 transition-transform" />
                 </Link>
               </div>
@@ -226,7 +226,7 @@ const About = () => {
                     return (
                       <div key={hobby.id} className="p-3 sm:p-4 md:p-6 bg-stone-50 dark:bg-stone-800 rounded-xl sm:rounded-2xl border border-stone-100 dark:border-stone-700 hover:border-liquid-mint transition-colors group">
                         <div className="flex items-center gap-2 sm:gap-3 mb-1.5 sm:mb-3">
-                          <Icon size={16} className="text-liquid-mint group-hover:scale-110 transition-transform shrink-0 sm:w-5 sm:h-5" />
+                          <Icon size={16} className="text-liquid-mint group-hover:scale-110 transition-transform duration-200 ease-out shrink-0 sm:w-5 sm:h-5" />
                           <h4 className="font-bold text-xs sm:text-sm text-stone-800 dark:text-stone-200 uppercase tracking-tight">{hobby.title}</h4>
                         </div>
                         <p className="text-[11px] sm:text-xs text-stone-500 dark:text-stone-400 font-medium leading-relaxed hidden sm:block">