@type t() :: %Autonomic.ObservationFrame{
  deterministic: [map()],
  dropped_low_priority_count: non_neg_integer(),
  effect_context: map() | nil,
  episode_id: Autonomic.Contracts.episode_id(),
  epoch: Autonomic.Contracts.epoch(),
  metadata: map(),
  observed_at: integer(),
  resource: map(),
  semantic: [Autonomic.SemanticObservation.t()],
  sequence: non_neg_integer()
}