Does 'forking' from local, or even a locally hosted private wiki, make sense?
When we fork a local copy, the page's journal contains a fork event that allows us to reason about the authors who have touched contributed to a page.
A fork from local distracts from this flow of reasoning. Not only does it not contain any information about the site the fork is from. It is also not distinguished from any forks from sites that are not available, so their site flag is not loaded.
Two existing workflows already employed by users:
* editing on a local server, and using scp to copy pages to the server. * logging out, and editing pages in browser local storage - publishing them by logging back in and forking from local storage.