Good point, I forgot for a second that you don't also make the Tachiyomi extension, which has otherwise been a trusty buddy for me.

For the time being, Tachiyomi provides an ample experience.

Obviously, a native dedicated app would integrate a lot more tightly, but you might want to give it a try. It can be set to auto-download and auto-delete based on some rules you can alter to some extent. (but it can work manually as well)

Ah okay, thank you for explaining! :) still think 0 numbered chapters would need to be handled differently, really threw me off big time when I encountered this problem.

If it's a Tachiyomi problem, chapter 0 of K-On! on Mangadex works as expected?

Is the flattening what causes chapter 0 of a volume to sync as the full volume to Tachiyomi which then reports back the entire volume as read to Kavita? (if Kavita is enabled as progress tracker)

But only with itself. It doesn't sync the state to e.g. a Calibre library, which is what I've always wanted.

Oh, and the state tracking is filename dependent if memory serves.

Sadly no it seems, gladly nothing crucial is locked behind it.

If general metadata scraping is locked behind that and no one-off payment is offered, I'll keep using Komf. If hard wishes get pay walled that way, not sure if that's compatible with my acceptance.

I'd gladly even regularly donate or something, but if I get the feeling features get DRM'd I'm not sure, I want to trust my library to that.

Fortunately I feel the developer is very aware of self-hoster mindsets and so far obvious limitations that other products would have locked in haven't happened so far.