Just a few hours ago I tried ArchiveBox again. Used the docker-compose version, imported around 600 bookmarks and... 5 hours later everything is pending, it has stopped creating new files and folders in the data folder, and I have no idea how to find out what's wrong.

I'm not terribly motivated right now to dive into the community and ask for help, so I won't seriously complain, but it's at least not trivial to use.

Clueless here. What sort of “personal archiving” are you talking about? Like Evernote? I’ve only ever used archive.ph to facilitate sharing articles without worrying about links changing (looking at you, BBC).