@hg42 your 'stateless' pipeline seems feasible using the desktop app, however that has not been ported over to V2 yet.
and as you already understand, the current V2 demo.html is specialized for running as a single page application, with lots of special functionality. this is probably not going to work well in the pipeline, even after massive hacks.
the core of V2 is pretty solid now, so i'm working on some of the remaining items in the V2 check list.
one of those is a 'minimum' viewer for V2. if anyone has some ideas or requirements for this then now is the time for some feedback.