I've posted to Hacker News about using TiddlyWiki for Andrej Karpathy's LLM Wiki pattern: https://news.ycombinator.com/item?id=47908792
I've been working on https://github.com/Jermolene/twillm, which uses TiddlyWiki's Node.js configuration so an LLM agent like Claude Code can read, write, and organise tiddlers in an existing Markdown vault.
