Display: Make Treeview Recursively

[mathkimchi]

If the treeview can be recursively generated, then I wouldn't need the world tree and path to be handled recursively. Plus, it would allow for arbitrarily fancy custom behavior.

Maybe add a UI primitive to support this stuff?

[mathkimchi]

(In general) Recursive management kinda clashes with me wanting customization to be centralized and standardized. At least, it makes it difficult even when all the app developers are acting in good faith.

An example of this is letting the user specify how multiple worlds are displayed, or folding behavior.

I've said that a powerful standardized developer toolkit is how I'll encourage standardization while allowing for deviations in edge cases. Maybe I'll thank this philosophy in the future, but I wonder if these edge cases will even come up.

Well, if I want Singularity to be a protocol, then it's good I'm allowing for edge cases.