export function lessonExportColumns(r) { return {'会员 ID':r.studentId,'学员':r.studentName,'课程':r.courseName,'门店':r.storeName,'授课老师':r.coachName, '训练时间(北京时间)':r.lessonAt?new Date(r.lessonAt).toLocaleString('sv-SE',{timeZone:'Asia/Shanghai'}):'未记录', '课型':r.classTypeLabel,'老师点评':r.coachComment,'学生评分':r.score||'未评分','学生评价':r.studentComment, '反馈摘要':r.feedbackSummary,'复习陪练':(r.reviewCoaches||[]).map(c=>c.name).join('、'),'待复习次数':r.pendingReviews}; }