ReadonlyallocationThe shape the new show DECLARES — what the console is (or is about to be built at). Never derived from the channel lists: the allocation is the ask, the lists are what sits in it.
Optional ReadonlypendingA shape that only a restart can reach (a shrink), recorded beside the declared one exactly
as /console/allocation's accept does. Absent when the asked-for shape lands live.
What a new session is started at — see blankConsoleSnapshot.