[feat] 去掉空白区域，可显示更多项

### Describe the Problem

<img width="376" height="639" alt="Image" src="https://github.com/user-attachments/assets/077c4088-7229-4cfc-916b-7677c5669db0" />
> 多余的空白区域去掉，单个item高度改为自动的

### Describe Your Desired Solution

面板高度不变的情况下可以显示更多的item了

### Considered Alternatives

_No response_

### Additional context

_No response_