同屏多页

### What problem does this feature solve?

类似word当页面缩的足够小之后同屏显示两页或者多页
<img width="1859" height="999" alt="Image" src="https://github.com/user-attachments/assets/526df104-adee-44f9-aaff-3f9f5b528033" />

### What does the proposed API look like?

分页/连页