Upload 9 files

src/main.js

@@ -52,6 +52,10 @@ function handleRoute() {
         navigateTo('admin');
         return;
     }
+    if (hash === 'instructor') {
+        navigateTo('instructor');
+        return;
+    }
 
     // Auto-login check
     const roomCode = localStorage.getItem('vibecoding_room_code');

src/views/InstructorView.js

@@ -171,7 +171,8 @@ export function setupInstructorEvents() {
             const isValid = await verifyInstructorPassword(pwdInput.value);
             if (isValid) {
                 authModal.classList.add('hidden');
-                // Store session to avoid re-login on reload (Optional, for now just per session)
+                // Store session to avoid re-login on reload
+                sessionStorage.setItem('vibecoding_instructor_auth', 'true');
             } else {
                 alert('密碼錯誤');
                 pwdInput.value = '';
@@ -589,12 +590,24 @@ export function setupInstructorEvents() {
         }
     });
 
+    // Check Previous Session
+    if (sessionStorage.getItem('vibecoding_instructor_auth') === 'true') {
+        authModal.classList.add('hidden');
+    }
+
+    // Check Active Room State
+    const activeRoom = sessionStorage.getItem('vibecoding_instructor_in_room');
+    if (activeRoom === 'true' && savedRoomCode) {
+        enterRoom(savedRoomCode);
+    }
+
     function enterRoom(roomCode) {
         createContainer.classList.add('hidden');
         roomInfo.classList.remove('hidden');
         dashboardContent.classList.remove('hidden');
         displayRoomCode.textContent = roomCode;
         localStorage.setItem('vibecoding_instructor_room', roomCode);
+        sessionStorage.setItem('vibecoding_instructor_in_room', 'true');
 
         // Subscribe to updates
         subscribeToRoom(roomCode, (students) => {