Are there examples of taildragger autoland systems?
There aren't any tailwheel airplanes with the level of sophistication that would make it even worthwhile doing.

It could be done in theory but would require a much more sophisticated system because taildraggers are considerably more demanding to land and to control on the ground (they are dynamically unstable while rolling on the ground and want to switch ends - try pushing a shopping cart backwards really fast).  There just isn't a market that would even take an interest in developing it.