Sorry, I didn't log into this account for a while.

Anyways, I guess in an ideal world the window management could be done fully via the window manager. In practice this doesn't work too well, because that would require a more complex protocol than currently exists. For VSCode for instance, that would require disabling the native tabbing feature (but keeping the native splitting because otherwise I'll end up with duplicated panes such as the file list) and implementing something custom to translate tab operations to sway-wm operations (in my case).

I guess it could work but it's not supported OOTB, and after a lot of work is probably going to end up being a lot more clunkier than what I have going on in vim.