Fix next-intl locale, remove wave animations, and unoptimize hero image

Co-authored-by: dennis <dennis@konkol.net>

app/components/Hero.tsx

@@ -117,6 +117,10 @@ const Hero = () => {
                 fill
                 className="object-cover scale-105 hover:scale-[1.08] transition-transform duration-1000 ease-out"
                 priority
+                // Next/Image optimizer is returning 400 for this file in some dev setups
+                // (seen as: "isn't a valid image ... received null"). Bypass optimization.
+                unoptimized
+                sizes="(max-width: 768px) 256px, 320px"
               />
 
               {/* Glossy Overlay for Liquid Feel */}