Nice design. Does it work with side loaded books for the highlights?

yes! if the title of the side loaded book is close enough to the original the app will detect which book it is when importing it. if it doesn't find it, i will leave the name of the book as it is and then you can assign a real book to it. do i make myself clear?

Where is your server hosted with?

2x RTX A6000 server on Vast.ai with another server with nginx as a reverse proxy

I thought about developing a simple Google Sheets add-on but I've been put off by Google verification process because of the scopes I use.

The problem with bank safes is that the moment you die, it's going to be frozen and will only be opened when you have probate. That's why it's not recommended to keep your will in a bank safe.