Request for Adding Language Switch Feature

[shuyuwa]

Hello,

First, I want to thank you for your amazing work on the hugo-theme-diary. It has been incredibly helpful for my blog.

Currently, the i18n feature requires hardcoding a single language. I would like to suggest an enhancement: adding a language switch button that allows users to change the current language dynamically. This feature would significantly improve the usability for multilingual audiences.

Could you provide some guidance or consider adding this feature in a future update?

Thank you for your time and effort!

Best regards,
shuyuwa.