enum PhaseStatus { active, completed, abandoned }

class PhaseModel {
  final String id;
  final String userId;
  final String? title;
  final String startedAt; // YYYY-MM-DD
  final String? endedAt;
  final int durationWeeks;
  final PhaseStatus status;
  final bool rewardDeclarationsLocked;

  const PhaseModel({
    required this.id,
    required this.userId,
    this.title,
    required this.startedAt,
    this.endedAt,
    this.durationWeeks = 6,
    required this.status,
    this.rewardDeclarationsLocked = false,
  });
}