Fewer sign-ins, and a list of where you are signed in

Elixir was asking for sign-in more than it should have, and a census of the owner's own sessions showed why: sessions were not expiring, sign-ins were happening beside live ones. Four causes, fixed. When the page could not reach Elixir it showed the sign-in wall; now it retries once and then says Elixir didn't answer, and never calls you signed out for a request that did not get through. Every OAuth consent went to your inbox even when you were signed in; now the consent page honours your sign-in (one Authorize), and consenting by code signs you in to the site too. The idle window is thirty days instead of nine (ninety at most, as before). And a sign-in started on one screen and finished on another - the link opened in the phone's mail app - now signs in the screen that asked, at once from the same address and after a yes from a different one; the sixth email in an hour is answered honestly instead of promised. New on Console ▸ Profile: Devices, every place you are signed in with a sign-out for each and one for everywhere else.