> I think highlighting the good performance is worth mentioning on your project's page

AFAICT most folks don't have more than a couple thousand at the high end, so they probably don't run into these perf issues — although it was my motivation, it's probably not relevant to them.

Also, I totally get how your workflow makes sense—especially for fast-moving topics like FE dev, where there may be more value in just doing a new google search/source.

I also really like tagging over hierarchy. Again just highlights the different use cases we have. If i get really crazy, I might try experimenting with more interesting tagging methods or apply some ML techniques.)

Still, re-using the filesystem is very clever idea, and has a bunch of advantages, not discussed yet.