@type t() :: %Vibe.Event.Subagent.Finished{
  child_session_id: term(),
  duration_ms: term(),
  error: term(),
  finished_at: term(),
  id: term(),
  model: term(),
  parent_session_id: term(),
  pid: term(),
  result: term(),
  role: term(),
  started_at: term(),
  status: term(),
  task: term()
}