Optional ReadonlybackgroundedWhether a newer lane of the same owner opened while this one ran: the reader moved on to the newer request, so
this one works in the background from then on. Another owner's lane does not background it; agents talking to the
reader at once stay side by side. A delegated subagent (a fresh thread on main) is in the background from the
start.
ReadonlycreatedOptional ReadonlyfromA fork's fork point: the message of main it forks at.
ReadonlyidReadonlykindOptional ReadonlymergedHow a person merged a fork into main: its whole work (raw), or its conclusion (summary).
Optional ReadonlyoverlappedWhether another lane was running at some point while this one was.
ReadonlyownerOptional ReadonlypurposeReadonlystatusOptional ReadonlywaitingThe lane this one is waiting for (threadWait).
One top-level unit of work: a light (or other) thread opened on main, or a turn that runs on main. Several lanes running at once are what the chat shows side by side.