Audit and fix animation performance issues including layout thrashing, compositor properties, scroll-linked motion, and blur effects. Use when animations stutter, transitions jank, or reviewing CSS/JS animation performance.

审计并修复动画性能问题，包括布局抖动、合成器属性、滚动关联动画和模糊效果。当动画卡顿、过渡不流畅或审查CSS/JS动画性能时使用。