fix: 全端隐藏用户角色标签(SUPER_ADMIN/操作员等)

frontend/src/components/layout/AdminLayout.tsx

@@ -113,11 +113,6 @@ export default function AdminLayout() {
               <span className="font-medium text-gray-700">
                 {user?.display_name ?? user?.username ?? "—"}
               </span>
-              {user?.role && (
-                <span className="rounded bg-gray-100 px-1.5 py-0.5 text-[10px] text-gray-500">
-                  {user.role}
-                </span>
-              )}
             </div>
             <button
               onClick={handleLogout}

frontend/src/pages/ProfilePage.tsx

@@ -14,10 +14,6 @@ export default function ProfilePage() {
   // ---- 从 AuthContext 派生真实数据 ----
   const displayName = user?.display_name || user?.username || "未知用户";
   const avatarChar = displayName.charAt(0);
-  const roleLabel =
-    user?.role === "SUPER_ADMIN"
-      ? "超级管理员"
-      : user?.role || "操作员";
 
   function handleLogout() {
     logout();
@@ -47,7 +43,6 @@ export default function ProfilePage() {
           <span className="block text-base font-bold text-gray-800">
             {displayName}
           </span>
-          <span className="text-xs text-gray-400">{roleLabel}</span>
         </div>
         <span className="text-xl text-gray-300">›</span>
       </div>