The middle tab (Compose New) can handle an ordinary fragment!  You can e...

...nter your compose message XML formatting in the layout called compose_msg.xml.  I added ContactActivity, and when the user clicks on a Conversations list or a Contacts list, they are redirected to an appropriate activity.

I also deleted a few minor projects that went nowhere.  I don't think they're worth keeping around, and there are still a number of side projects that show progress!