- Delete CampusSwitcher component and useCampus hook
- Delete Departments page and its route
- Remove campus header interceptor from API client
- Remove departmentId from Class interfaces
- Remove campusLocation from student profile
- Remove department permissions from test fixtures
- Remove currentCampusId from test cleanup
TypeScript compiles clean.
- Add GET /classes/:id/schedule returning ClassSchedule list with classroom name
- Add GET /classes/:id/attendance-summary returning attendance/absence/late rates
- Add 课表 and 出勤汇总 tabs to Classes detail page
- Register ClassSchedule and AttendanceRecord in ClassesModule
