phsl / new-api

- Add multi-dimensional animation with translateY, scale, and blur transforms
- Introduce 60% keyframe for smoother animation progression
- Extend animation duration from 0.4s to 0.6s for better visual impact
- Apply cubic-bezier(0.22, 1, 0.36, 1) easing for more natural motion
- Add will-change property to optimize rendering performance
- Improve perceived responsiveness during AI response streaming

The enhanced animation now provides a more polished and engaging user
experience when AI responses are being streamed, with text appearing
smoothly from bottom-up with subtle scaling and blur effects.