[Enhancement] Add built-in Chinese font for better out of box experience.

<img width="2656" height="1610" alt="Image" src="https://github.com/user-attachments/assets/648b56c8-dc09-42ad-bce2-a8a74723dd13" />

For some distributions like Debian or Ubuntu,  c00lapk requires extra fonts that some distributions won't provide, and it's really hard for user to figure out which font it use, and configure it properly.