Assert a terminal Execution contract

Use field-aware matchers instead of comparing a complete Entry whose unrelated timestamps or metadata may change.

expect(
  useCase.history,
  contains(
    isTerminalUseCaseExecutionEntry<LoadOrder>(
      result: UseCaseExecutionResult.completed,
    ),
  ),
);

For a complete scenario, useCaseTest subscribes before act, waits on an explicit observable condition, verifies Snapshots and history, then closes the UseCase. Use a manual UseCaseTestObserver when several Commands require staged assertions.

A pre-processing rejection is intentionally absent from terminal history. Verify an application rejection hook directly or use diagnostics when rejection events are part of the requirement.