bug#81520: Add pre-receive hook to Savannah to reject LLM-encumbered commits

> From: Sean Whitton <[email protected]>
> Cc: [email protected], [email protected]
> Date: Fri, 31 Jul 2026 14:09:35 +0100
> 
> >> > What are the problems with rejecting individual commits when they are
> >> > done?
> >>
> >> It makes it difficult to make commits you never intend to push, e.g.
> >> for local-only checkpointing.
> >
> > On the public branches?  Why do you do that?  It's inherently
> > dangerous.
> 
> Right, I either do it on non-public branches, or on machines which don't
> have my SSH key.

But then the hooks should not be relevant, right?