I don't understand the concept of using tags or even avoiding them.

Everything in my brain is highly categorized and those categories are hierarchical.

Computer / Kubernetes / Helm / Something.md

Computer / Java / JVM / Garbage Collection Tuning.md

Construction / Foundation / Shallow Strip Foundation.md

Hobby / 3D Printing / On Shape.md

And so on.

I don't even think that I need links. May be some. What I need is the ability to show multiple files at once. For example show all files in Computer / Kubernetes / Helm directory, separated with horizontal lines with the ability to edit this in one editor window. I hate when I need to constantly switch around in traditional editors.