The workflow-level causal-autonomy narrative — "this workflow runs itself", or the stages where a run waits on someone.
OptionalcurrentMost recent history entries (newest first), capped to keep payload tight.
OptionalsubjectWhat this workflow is about. See ProjectedSubject.
OptionalworkflowWorkflow's human-readable title — see ProjectedInstanceSummary.workflowTitle.
Activities on the current stage, with available actions.