Completed result of one task in the active superstep, held on
Docket.Run.pending_writes until the superstep's update barrier.
While sibling tasks are still retrying, completed results are committed here so recovery never re-executes them — but they stay invisible to channels, guards, and snapshots until the barrier applies the whole superstep at once.
kind is :update for a validated state-update map or :interrupt for
an interrupt request awaiting barrier registration.
Summary
Types
@type t() :: %Docket.Run.PendingWrite{ attempt: pos_integer(), kind: :update | :interrupt, node_id: String.t(), task_id: String.t(), value: map() | Docket.Interrupt.t() }