I'd love a tool that lets me manually create maps/graphs between files/modules/functions in code and be able to jump between nodes. What would be even cooler is LSP support so that if code changed, the tool would be able to keep the map/graph up-to-date.
So far the closest thing I can find is a VS Code extension: https://github.com/Pjaerr/Code-Flow-Extension
Apparently there also used to be a tool/service called "Grok" that is now dead and the original domain redirects to spam: https://web.archive.org/web/20210812070223/https://www.trygrok.com/
Here's an old HN thread about Grok, which at least shows that a tool like this would be useful to others: https://news.ycombinator.com/item?id=28150169
Has anyone come across a tool like this recently?