AcademicDashboardDTO

教务仪表盘数据DTO
用于返回教务查看的学院统计信息

{
    "teacher_count": 0,
    "student_count": 0,
    "major_student_counts": [
        {
            "major_uuid": "string",
            "major_name": "string",
            "count": 0
        }
    ],
    "administrative_class_count": 0,
    "teaching_class_count": 0,
    "course_library_count": 0
}