feat(phase-b): student enrollment UI, teacher/student management pages, lesson views

- ClassDetailPage: full rewrite with MUI tabs (students, enrollment requests, teachers),
  add/remove students, approve/reject enrollment requests, AddStudentDialog
- StudentLessonsPage: new — student's weekly lesson view with week navigation
- TaughtLessonsPage: teacher's taught lesson week view
- SchoolSettingsPage, StaffManagerPage, StudentManagerPage: school admin management pages
- PlatformAdminPage: platform admin reset/seed controls
- Header: expanded nav menu (student lessons, school management, platform admin items)
- AppRoutes: routes for all new pages
- SchoolCalendarWizard, TeacherTimetableWizard: week_cycle support and improvements
- CCGraphNavPanel: updated navigation integration
- index.ts: export all new timetable pages

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

src/pages/timetable/index.ts

@@ -1,19 +1,17 @@
 /**
  * Timetable Module - Page Exports
- * 
- * This barrel file exports all pages related to the timetable/classroom management system.
- * 
- * @module pages/timetable
  */
 
-// Main pages
 export { default as TimetablePage } from './TimetablePage';
 export { default as ClassesPage } from './ClassesPage';
 export { default as LessonPage } from './LessonPage';
-
-// Class management pages
+export { default as TaughtLessonsPage } from './TaughtLessonsPage';
 export { default as MyClassesPage } from './MyClassesPage';
 export { default as EnrollmentRequestsPage } from './EnrollmentRequestsPage';
+export { default as StaffManagerPage } from './StaffManagerPage';
+export { default as StudentManagerPage } from './StudentManagerPage';
+export { default as SchoolSettingsPage } from './SchoolSettingsPage';
+export { default as ClassDetailPage } from './ClassDetailPage';
+export { default as StudentLessonsPage } from './StudentLessonsPage';
 
-// Re-export types if needed
 export type { ClassView, DaySchedule, WeekSchedule } from './TimetablePage';