As a different suggestion, you can have a wiki on your machine with TiddlyWiki. [1] With that, there’s no need for a server or complex software deployment and maintenance.

[1]: https://tiddlywiki.com

True that, albeit building my own wiki that has it's own feel and way of working was worth it to me. I took some inspirations from TiddlyWiki, but this space is really packed with a bunch of great tools. The ones I liked most were:

Logseq (open source): https://logseq.com/

Roam Research: https://roamresearch.com/

Another great local-first wiki tool is Obsidian (https://obsidian.md/). Each page is just a markdown file in a dedicated folder. They have backlinks and a bunch of plugins.

And Dynalist (https://dynalist.io/) from the Obsidian authors!

Pretty much. One repo for the notes, one repo for the logic. I tried to keep it as flexible as possible so that I could theoretically integrate any kind of frontend/backend tech at a later point.

At the moment everything gets hosted locally unfortunately. I was planning on polishing it so that it's easier to setup. Then I can put it on a Show HN in the future as a kind of "how this was built" :) and give some inspiration to other people who thought of building their own.