@type t() :: %ExecutionPlane.ExecutionActivityMetadata{
  activity_call_ref: term(),
  actor_ref: term(),
  authority_packet_ref: term(),
  contract_name: term(),
  heartbeat_policy: term(),
  idempotency_key: term(),
  lower_run_ref: term(),
  permission_decision_ref: term(),
  resource_ref: term(),
  runtime_family: term(),
  target_ref: term(),
  tenant_ref: term(),
  timeout_policy: term(),
  trace_id: term(),
  workflow_ref: term()
}