TeacherPreferencesDTO - class-scheduling

教师课程偏好数据传输对象

该类用于在系统各层之间传递教师课程偏好信息，包含了教师对特定时间段的课程偏好设置。

{ "preference_uuid": "string", "teacher_uuid": "string", "semester_uuid": "string", "day_of_week": 0, "time_slot": 0, "preference_level": 0, "reason": "string", "created_at": 0, "updated_at": 0 }