You guys are safe, it wont be a retrofit, new aircraft will be designed that way, single human pilot on the flight deck with no need to enter the cabin area at all. Sleeping lounge below for the resting crew member. I think Airbus is preparing us for it, prove it can be done single pilot so there is less argument with a much more sophisticated pilot. The flight deck is there for the human pilots benefit and as redundancy, but the robot won't need to look at and interpret any of the flight instruments. It has all that capability within itself and is self contained.
Imagine if we humans were able to see and know everything you need in our 3 dimensional environment without having to look at it.