Re-enable image optimization and default header logo text

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NK7oe8iYPiNvVCvg5z1eyQ

components/shopify/header.tsx

@@ -50,7 +50,7 @@ interface HeaderProps {
 }
 
 const Header: React.FC<HeaderProps> = ({
-  storeName = 'Shop',
+  storeName = 'Logo',
   logoUrl,
   links = [
     { label: 'Shop', url: '/' },

next.config.js

@@ -4,7 +4,6 @@ export default {
     ignoreBuildErrors: true,
   },
   images: {
-    unoptimized: true,
     remotePatterns: [
       {
         protocol: 'https',