Aw, that's not what I hoped it would be. An actual file-based calendar UI is a neat idea, where you can (for instance) echo into a file to create a calendar event on the command line.
Same here. I think that would be a terrific idea. $ cat /cal/2024/08/04/events
$ ls /cal/2024/08/04
Or perhaps $ cat /cal/2024/08/04/*
;)