@twop0intfive Well, a while back @revengeday wrote a little script that allows you to post from the command line. Perhaps you could install it and set it up, and then do some sort of 1-click automation or something that would post for you?
Here's the Totentanz article where xe posted it. And I did some modifications to it for zsh, in case you use that. It's further down in this thread. Dunno if it's quite what you're looking for, but it might be a start!