@type t() :: %Cyclium.Schemas.WorkflowInstance{
  __meta__: term(),
  conversation_id: term(),
  created_at: term(),
  dry_run_opts: term(),
  finished_at: term(),
  id: term(),
  mode: term(),
  source_env: term(),
  source_stack: term(),
  started_at: term(),
  status: term(),
  step_states: term(),
  subject_value: term(),
  trigger_ref: term(),
  updated_at: term(),
  workflow_id: term()
}