Returns typed task details after current audience and tenant checks. Segment language pairs use only currently readable contributors and never expose historical occurrence counts. Import and invitation references must still belong to the task context; imports require resource or applicable language view, invitations additionally require members view. Unavailable details are explicit nulls. Integration errors describe the recorded occurrence without contacting a provider. Hidden tasks or segment tasks with no readable contributors return 404. The computed response has its own complete ETag and does not mutate the task. Requires workspace general view permission.