Given the rise of Javascript in Windows 8, does Windows 8 / .Net 4.5 / VS 2012 provide a mechanism to embed the Chakra javascript engine in application to enable scripting? If so, is there documentation for this somewhere?
There is no mechanism to do this that has been released or talked about. For now, it is available only in IE and to Metro style apps. There isn't even a Windows Scripting Host style exposure of it.
What is it about Chakra that you want in your scripting?