How has no one mentioned Rnote ?
It has good drawing, selection and other stuff with an infinite canvas while being pretty configurable.

It does say that but it works perfectly fine.

KOReader is goated. So many options, I use use it mainly on phones but it works on PC as well.

Fluxer has federation on its roadmap

Honestly most good text editors should support LSP these days, which at the very least gives a good IDE. That way you can somewhat decouple the dev environment from the text editor, bar a few exception languages that are harder to work with.

No context aware refactoring ? No thank you !

If you want to start using Vim the way i was intended to be used. You should really learn touch typing. Also, text objects are a pretty big deal IMHO.

LSP protocol

The P in LSP, already stands for protocol :)) “Language Server Protocol”

I do recommend sway if you don’t find an alternative, it works really well. But yeah, no auto-tiling by default.
Can I ask why are you against Hyprland ?

EDIT: The arch wiki has a list