Macworld Whether it’s the result of compelling evidence or groupthink, the normally fractious and argumentative Apple rumorsphere has a tendency every now and then to suddenly speak with one voice. And right now that voice is saying four words: HomePod with a display. Within the space of a week, pundits spotted HomeAccessory17,1 references in backend code and a touchscreen interface hidden in a tvOS beta that all seem to point to the same thing. Whether this will result in a shipped product remains to be seen, but it’s getting hard to deny that Apple is at least working on some form of smart s…