I'll probably have to jump on irc but it's late so I thought I'd start here first.

Use MW to write content for help screens. Use a proxy to serve the content in an admin panel. The issue: Special:MyLanguage doesn't work as it does pushing users at their language when they click a link in the help window. Instead, the proxy requests the literal link to the page of Special:MyLanguage/A_pagename which of course does not exist as a page because Special:MyLanguage isn't processed first to see if the language a user is viewing exists before sending the user to the language page or fallback language page.

REGEX out Special:MyLanguage/ ? Then add on lang code of admin view of interface to match help system pages in mw. Can be done but that would be expensive. Some pages could have 10-20 links.

Thoughts appreciated as I maybe missing something with the api.

Thanks Tom