I'd like to see this self-contained. It looks like if I want to share a mesh with someone, I need them to be familiar with developer build processes (needing npm or yarn, etc; and including having Electron installed? not sure yet, since I haven't been able to try it out and poke at it yet—my case in point, really)

I'd rather be able to send anyone my-data.mesh.html, they double click it, it opens in their browser, they can modify it at will, and there's a button that's functionally equivalent to a Save button to let them overwrite the orginal file. (Like a quine on steroids. Think TiddlyWiki.) This can be done, the only problem is that you don't get the typical Ctrl+S workflow—you use the in-page button instead, and it wouldn't let you get around the "Save As" dialog, but I'm thinking it should be only a minor nuisance.

If you do it right, you could even standardize your serialization so that other tools could ingest a meshfile.

This is really neat, and I'm going to play with it tomorrow.