feat(web): migrate teacher attendance workflow

Add the React attendance console with manual, QR, and location check-in flows, record editing, Excel exchange, submission, risk signals, and course statistics. Preserve server-side task scope and archived-task restrictions.

web-react/MIGRATION_MATRIX.md

@@ -36,6 +36,7 @@
 | `/campus-registrations` | 校园支付与报名 | Student | 开放项目、报名、审核状态、撤销、校园余额支付 | verification |
 | `/approvals` | 我的审批申请 | Student | 免修、缓考、课程替代申请与审核结果 | verification |
 | `/teacher-roster` | 选课名单 | Teacher | 本人授课教学班、学生联系与特殊支持信息、Excel 导出 | verification |
+| `/teacher-attendance` | 教学点名 | Teacher、教务管理、Counselor | 教学班筛选、人工/扫码/定位签到、Excel、提交、风险信号与课程统计 | verification |
 | `/activate` | 学生账号激活 | 公开 | 学籍选项、身份匹配、强密码和一次性激活 | verification |
 | `/verify/:verificationCode?` | 电子凭证验真 | 公开 | 唯一编号、实时状态、签发信息和 PDF 哈希 | verification |
 | `/classroom-repairs/report/:classroomId` | 教室扫码报修 | 公开 | 教室设备、故障类别、联系方式和工单提交 | verification |