[InGoldAndGreen]

Oh god I ran into this issue! Fewer nodes, but still.

I created an HTML page that used vis-network to created a force-directed nodegraph. I'd then just open it up and wait for it to settle.

The initial code is here, you should be able to dump it into an LLM to explain: https://github.com/HebeHH/skyrim-alchemy/blob/master/HTMLGra...

I later used d3 to do pretty much the same thing, but with a much larger graph (still only 100,000 nodes). That was pretty fragile though, so I added an `export to svg` button so you could load the graph, wait for it to settle, and then download the full thing. This kept good quality for zooming in and out.

However my nodegraphs were both incredibly messy, with many many connections going everywhere. That meant that I couldn't find a library that could work out how to lay it out properly first time, and needed the force-directed nature to spread them out. For your case of 1 billion nodes, force-directed may not be the way to go.