toJson method

@override Map<String, Object?> toJson()

Wire form with stable key order (zap first — the envelope reads top-down).

Implementation

@override
Map<String, Object?> toJson() => <String, Object?>{
  'zap': zapProtocolVersion,
  'type': type,
  'id': id,
  'ts': ts,
  'missionId': missionId,
  'stepId': stepId,
  'phase': phase,
  'command': command,
  'exit': exit,
  'digest': digest,
  'at': at,
  if (durationMs != null) 'durationMs': durationMs,
  if (output != null) 'output': output,
};