Add a purple dashed line showing cache hit rate percentage (cache_read / (cache_read + cache_creation)) on a secondary right Y-axis (0-100%). Applies to both user and admin dashboards.
- 统一移除语句末尾分号，规范代码格式 - 优化组件类型定义和 props 声明 - 改进组件文档和示例代码 - 提升代码可读性和一致性
