

I don’t really know what’s out there, but FWIW, I’d point out that there is nothing functional about the coupling between the pendulum and the clock in such a movement, so if you could find a separate “pendulum swinger” you could perhaps use that with a regular DST capable movement.
A few months ago, eh? I know nothing about and have no opinion on Plebbit. But shit takes time, especially open source volunteer efforts.