I'm not the expert but Gemini doesn't say anything exists besides the Voltera V-One (which obviously doesn't work for complex PCBs). I am imagining something like a PCB microfactory the size of a container (or even smaller) that completely handles PCB etch and drill, solder paste application, PnP, baking, and testing.

That would be super cool. Difficulty comes with multi-layer PCBs, hard to find a solution for laminating.