A television is not a small desk or a big phone: it is a shared window a room of people look through together. What CTV is for (5a), the remote-first input grammar (5b), and — stated as design, not omission — what TV refuses to do (5c).
Voice through the remote's mic goes to the ally like any other saying. No on-screen keyboard beyond a handle search; anything longer, the ally offers the phone.
kiduna.tv, the site, is the download and the explanation — what CTV is for, in these words — not a fifth surface.