Remove placeholder cat images

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

assets/js/custom.js

@@ -14,7 +14,7 @@
 
     // Background at 55%, text at 80% — both slower than normal, image slowest
     if (heroBg) heroBg.style.transform = 'translateY(' + (s * 0.25) + 'px)';
-    if (heroFg) heroFg.style.transform = 'translateY(' + (s * 0.15) + 'px)';
+    if (heroFg) heroFg.style.transform = 'translateY(' + (s * 0.05) + 'px)';
 
     // Scroll arrow fades out over the first 30% of hero height
     if (heroScroll) {