Slow down hue-rotate animation to 60 seconds

- Change animation duration from 8s to 60s for subtle color shifting
- Creates gentle, barely noticeable background color transitions
- Maintains visual interest without being distracting

examples/chat-ui/src/index.css

@@ -12,5 +12,5 @@
 }
 
 .animated-hue-bg {
-  animation: hue-rotate 8s linear infinite;
+  animation: hue-rotate 60s linear infinite;
 }