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src/views/InstructorView.js

@@ -1852,10 +1852,13 @@ export function setupInstructorEvents() {
                     // Helper Actions
                     window.confirmReset = async (userId, challengeId, title) => {
                         if (confirm(`確定要退回 ${title} 嗎？此動作將清除學員目前的進度。`)) {
-                            const roomCode = localStorage.getItem('vibecoding_instructor_room');
-                            if (userId && challengeId && roomCode) {
+                            // Unified top-level import
+                            const roomCode = localStorage.getItem('vibecoding_room_code') || localStorage.getItem('vibecoding_instructor_room'); // Fallback
+
+                            if (userId && challengeId) {
                                 try {
-                                    const { resetProgress } = await import("../services/classroom.js");
+                                    alert("正在執行退回 (列表模式)...");
+                                    // Use top-level import directly
                                     await resetProgress(userId, roomCode, challengeId);
                                     // Refresh current list if open? (It will stay open but might not update immediately if realtime check isn't hooked to modal content. But subscriptions update `currentStudents`. We might need to refresh list)
                                     // For now, simple alert or auto-close