Feature Request: External Storage & iCloud Offloading Support

Hello,I hope you're doing well.First, I want to say that I absolutely love your app, BookShelves eBook Reader. It's one of the best solutions I've found for managing and reading ebooks in multiple formats, especially with its clean interface and iCloud integration.However, I’ve run into a significant limitation in my current setup, and I wanted to share it in case there might be a workaround or a future improvement.I have a large personal library of ebooks (around 400GB) stored on an external hard drive. My Mac, however, only has a 256GB internal SSD with limited available space. Because the app relies on iCloud for syncing and storage, I’m unable to import and manage my full library without running into storage constraints.What I’m hoping for is one of the following possibilities:- Support for importing and reading books directly from external storage without copying them into iCloud/local storage  - An option to “offload” or keep files externally while maintaining their organization within the app  - More flexible iCloud usage (e.g., metadata synced via iCloud, but files stored externally)  - Any alternative workflow that would allow large libraries to be managed without requiring full local or iCloud storage  I believe this kind of feature would be incredibly valuable for users with large collections like mine.Thank you for your time and for creating such a great app. I’d really appreciate any guidance or insight you might have.