Update web/src/App.tsx

web/src/App.tsx

@@ -449,26 +449,27 @@ function App() {
     return groupMembers;
   }, [currentWorkspaceId, mySpaceUserMember, clareMember, groupMembers]);
 
+
+
+
   useEffect(() => {
     if (!currentWorkspace) return;
-
+  
+    // Group course workspace: courseId 应该由 workspace 决定（单向写入）
     if (currentWorkspace.type === "group" && currentWorkspace.category === "course") {
       const cid = currentWorkspace.courseInfo?.id;
-      if (cid) setCurrentCourseId(cid);
+      if (cid && cid !== currentCourseId) setCurrentCourseId(cid);
       return;
     }
-
+  
+    // Individual workspace: 只在 currentCourseId 为空/无效时才从 localStorage hydrate
     if (currentWorkspace.type === "individual") {
       const saved = localStorage.getItem("myspace_selected_course");
-      if (saved) setCurrentCourseId(saved);
+      if (saved && saved !== currentCourseId) setCurrentCourseId(saved);
     }
-  }, [currentWorkspaceId, currentWorkspace]);
+  }, [currentWorkspaceId, currentWorkspace, currentCourseId]);
+
 
-  useEffect(() => {
-    if (currentWorkspace?.type === "individual") {
-      localStorage.setItem("myspace_selected_course", currentCourseId);
-    }
-  }, [currentCourseId, currentWorkspace]);
 
   useEffect(() => {
     document.documentElement.classList.toggle("dark", isDarkMode);