Update web/src/components/sidebar/LeftSidebar.tsx

web/src/components/sidebar/LeftSidebar.tsx

@@ -70,18 +70,6 @@ export function LeftSidebar(props: Props) {
 
   return (
     <div className="h-full w-full flex flex-col min-h-0">
-      {/* ✅ 极强提示：只要这个组件在跑，你不可能看不到 */}
-      <div
-        style={{
-          background: "yellow",
-          color: "red",
-          fontWeight: 700,
-          padding: "8px 12px",
-          borderBottom: "2px solid red",
-        }}
-      >
-        SIDEBAR ACTIVE: web/src/components/sidebar/LeftSidebar.tsx
-      </div>
 
       {/* Course info（不滚动） */}
       <div className="flex-shrink-0">