Merging Codes,
As with Hans I am intrigued. Your links are primarily to coding standards and hosting options. I am not sure what "large intranet for government using tiddlywiki" is conceived as. Riz points out that Jeremy has put an Amazon web service solution together with a lot of content for, I think, legal resources. So I believe he is the only one that is done this at scale, but I think Jeds Bob is running in a team environment.
The potential scope for the needs of a government Intranet are vast, and whilst tiddlywikis possibilities are vast, I do consider tiddlywiki a platform, I still feel the multi-user multi-access and security of tiddlywiki may not work well with a large intranet except in so far as publishing individual websites or software tools.
But if I knew more about what a Government Intranet would need... other than my own guessing.
Whilst I say Tiddlywiki may not be suitable, I continue to develop the idea of using tiddlywiki as a "business intelligence" environment. I am interested in loosely coupled tiddlywikis and using tiddlywiki to generate sites. I suppose what I am saying at this point in time such an application as a large intranet is in tiddlywikis future, but not here now. But we may start somewhere so it becomes in its future.
I have build extensive SharePoint Intranet sites, even tiddlywiki on top of sharepoint for a paid customer, but tiddlywiki is still seems only a niche solution at this point.
I too am intrigued about the idea of using it as an intranet environment and will give it more thought.
To me it is a matter of scaling whilst keeping the modularity.
Regards
Tony