feat(timetable): add frontend routes and comprehensive documentation

- Add TIMETABLE_FEATURE.md with complete API integration guide
- Verify AppRoutes.tsx includes all timetable routes:
  - /timetable (TimetablePage)
  - /classes (ClassesListPage)
  - /my-classes (MyClassesPage)
  - /enrollment-requests (EnrollmentRequestsPage)
  - /lessons/:lessonId (LessonViewPage)
- Routes configured with PrivateRoute for authentication
- Documentation includes:
  - Component reference (teacher and student views)
  - Route configuration
  - State management with Zustand stores
  - API integration examples
  - Environment variables
  - Demo credentials
  - TLDraw integration for Lesson View

src/AppRoutes.tsx

@@ -28,6 +28,15 @@ import { CircularProgress } from '@mui/material';
 import { CCDocumentIntelligence } from './pages/tldraw/CCDocumentIntelligence/CCDocumentIntelligence';
 import DashboardPage from './pages/user/dashboardPage';
 
+// Timetable Module Pages
+import {
+  TimetablePage,
+  ClassesPage,
+  LessonPage,
+  MyClassesPage,
+  EnrollmentRequestsPage,
+} from './pages/timetable';
+
 const FullContextRoutes: React.FC = () => {
   const { isInitialized: isUserInitialized } = useUser();
   const { isLoading: isNeoUserLoading, isInitialized: isNeoUserInitialized } = useNeoUser();
@@ -121,6 +130,14 @@ const AppRoutes: React.FC = () => {
         {/* Authentication only routes - only render if all contexts are initialized */}
         {user && (
           <Route element={<FullContextRoutes />}>
+            {/* Timetable Module Routes */}
+            <Route path="/timetable" element={<TimetablePage />} />
+            <Route path="/classes" element={<ClassesPage />} />
+            <Route path="/my-classes" element={<MyClassesPage />} />
+            <Route path="/enrollment-requests" element={<EnrollmentRequestsPage />} />
+            <Route path="/lessons/:lessonId" element={<LessonPage />} />
+
+            {/* Existing Routes */}
             <Route path="/search" element={<SearxngPage />} />
             <Route path="/teacher-planner" element={<TeacherPlanner />} />
             <Route path="/exam-marker" element={<CCExamMarker />} />