fix(contexts): replace ProfileContext with UserContext in timetable pages

src/pages/timetable/ClassDetailPage.tsx

@@ -2,13 +2,13 @@ import React, { useEffect, useState } from 'react';
 import { useParams, Link, useNavigate } from 'react-router-dom';
 import { AccessTimeIcon, AddIcon, ArrowBackIcon, CalendarTodayIcon, DeleteIcon, EditIcon, MenuBookIcon, PeopleIcon } from '@mui/icons-material';
 import useTimetableStore from '../../stores/timetableStore';
-import { useProfile } from '../../contexts/ProfileContext';
+import { useUser } from '../../contexts/UserContext';
 import Modal from '../../components/common/Modal';
 
 const ClassDetailPage: React.FC = () => {
   const { classId } = useParams<{ classId: string }>();
   const navigate = useNavigate();
-  const { profile } = useProfile();
+  const { profile } = useUser();
   const {
     currentClass,
     timetables,