Auto-translation on chapter change & bulk translation in chapter list

[gasaiyuno1063-a11y]

Describe your suggested feature

Currently, chapters must be translated manually one by one while reading. I would like to request two features to improve the translation workflow:
Auto-translate on Chapter Transition: An option in settings to automatically translate the next chapter as soon as you navigate to it, removing the need to tap the translate button every time.
Bulk Chapter Translation: An option in the chapter list screen (where chapters are displayed) to select multiple chapters and pre-translate them in bulk for offline/seamless reading.

Other details

This would greatly improve the reading experience for users rely on built-in translation, making chapter navigation smoother and allowing preparation of multiple chapters in advance.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• I have checked the Hayai wiki and current feature audit.
• I have checked through the app settings for my feature.
• I will fill out all of the requested information in this form.