>>16688924
>we don't have the capacity to even make robots that would be able to do much once they reach even the nearest stars
Right now we don't, but it is conceptually feasible.
You don't really need to send the big capable robot itself to another star, you just need to send the instructions for making it, and the tiny assemblers which could mine raw material and begin the construction process.
All of this could fit on something smaller than a postage stamp in the middle of the craft.