Generate a day's entries on the device the request names

Starts a Generate of that local day on the device X-Six-Minute-Device names (403 for a device that is not the caller's; without the header, until the follow-up, the caller's most recently active device, 400 with none), from that device's activity and the meetings, which belong to no device, over the day's start to the press (D-311; the generate-reliability plan, T2 and A2). It writes only over free time: what a live entry already holds is clipped, never refused. 202 names the run; 200 started: false when nothing waits (K8); 409 generate-running while a Generate of that day on that device runs. A press on another device while one runs is queued behind it. Two presses of one window are one run; a press after a delete is a run of its own.