Opened in macOS and it appears impossible to open a folder of any sort. I type the folder path into the Open Folder thing at the top and it just silently fails.
There's no menu or anything to open a folder either. This seems lacking some _basic_ UX principles that should never be overlooked.
I did eventually figure it out and the TS integration doesn't work at all. The file browser icons constantly and consistently do not render correctly.
Guess this is something to check back in on in a year or three. It's a long way away from being complete, let alone usable.