> Calibre works exactly the way you suggest, so I'm not sure why you haven't found it.
JFC, that's not how the installation and the first run of Calibre works at all. I'd write "I'am not sure why you think people would think calibre is first a manager library and not a book reader after installing it" but I'd be lying.
I think Calibre advocates forgot what it's like to setup it for the first time and what a messy ugly process it is for new timers. A containerized version needs VNC access to set it up and perform some un-intuitive UI actions https://docs.linuxserver.io/images/docker-calibre/#applicati...
I've used https://www.kavitareader.com/ but it's not perfect either, this space could be "disrupted" by a Plex like product with opensource + licensed offerings but the target market is pretty small I think.
However, it needs flatpak runtime. If you already have different flatpak apps, this is not an issue, it is going to be shared with them, but if this is going to be your first-and-only flatpak app, you need to add few hundreds MB.
JFC, that's not how the installation and the first run of Calibre works at all. I'd write "I'am not sure why you think people would think calibre is first a manager library and not a book reader after installing it" but I'd be lying.