Toby,
Are Files with a hashtag in the description indexed to be included in
a hashtag search? It appears they are not. Should they be?
Oh, that's an interesting idea.
So far as I know, only message topics implement the hashtag concept. But extending it to Files and perhaps Photos could be quite useful.
I think you should suggest it over in beta@ - Groups.io's official "suggestion box".
Shal
Shal Farley