org-brain VS org-graph-view

What about org-brain. I've used it a couple of years ago, could be of interest.

the main plugins would be the built-in org-mode and additionally either one of org-roam or org-brain (I use org-roam with org-roam-ui)

I use org-brain. It doesn't use a db, only org ids. It supports both file and headline entries but you can disable the file ones by setting org-brain-include-file-entries to nil

Looks nice! Btw have you seen org-brain? It is org-only but also seems minimal in dependencies.

org-brain

Just remembered: Org-brain. That style of UI seems like it might work

Somewhat relevant is this still-WIP package of mine: https://github.com/alphapapa/org-graph-view If I could figure out how to solve the weird issues with graphviz's handling of image boundaries and imagemap areas, it could be published.

This isn't what you asked for, but it might be useful in some way, even as inspiration for your own library: https://github.com/alphapapa/org-graph-view

Org-mode is -before almost everything else- a great outliner. So collapsing/expanding (showing more or less), moving, adding, editing, rearranging things is what it does out of the box... among many others, like setting states, adding tags, dates (timestamps, schedule, deadlines, etc.), lists (with checks if you like), automatic timings, properties/metadata that can be used in calculations, tables (as spreadsheets), querying your files and making things with the results (from calendars to tables), exporting, transforming the same data into multiples visualization (like headings with metadata into tables), exporting to many formats, and more. Even making networks from links as the org-roam server that we talked before or creating mind maps like the great Alphapapa's https://github.com/alphapapa/org-graph-view . :)