@type status() :: :running | :done | :failed | :cancelled

@type t() :: %Pi.Agent.Job{
  child_session_id: String.t(),
  duration_ms: non_neg_integer() | nil,
  error: term(),
  finished_at: DateTime.t() | nil,
  id: String.t(),
  model: term(),
  parent_session_id: String.t() | nil,
  pid: pid() | nil,
  result: term(),
  role: atom() | String.t() | nil,
  started_at: DateTime.t() | nil,
  status: status(),
  task: String.t()
}