feat(workspace): 用加载转圈替换消息骨架屏

frontend/src/components/workspace/workspace-header.tsx

@@ -30,7 +30,7 @@ export function WorkspaceHeader({ className }: { className?: string }) {
         {state === "collapsed" ? (
           <div className="group-has-data-[collapsible=icon]/sidebar-wrapper:-translate-y flex w-full cursor-pointer items-center justify-center">
             <div className="text-primary block pt-1 font-serif group-hover/workspace-header:hidden">
-              DF
+              XC
             </div>
             <SidebarTrigger className="hidden pl-2 group-hover/workspace-header:block" />
           </div>
@@ -38,11 +38,11 @@ export function WorkspaceHeader({ className }: { className?: string }) {
           <div className="flex items-center justify-between gap-2">
             {env.NEXT_PUBLIC_STATIC_WEBSITE_ONLY === "true" ? (
               <Link href="/" className="text-primary ml-2 font-serif">
-                DeerFlow
+                XClaw侧边栏
               </Link>
             ) : (
               <div className="text-primary ml-2 cursor-default font-serif">
-                DeerFlow
+                XClaw（测试专用侧边栏。）
               </div>
             )}
             <SidebarTrigger />

frontend/src/components/workspace/workspace-sidebar.tsx

@@ -29,7 +29,7 @@ export function WorkspaceSidebar({
           {isSidebarOpen && <RecentChatList />}
         </SidebarContent>
         <SidebarFooter>
-          <WorkspaceNavMenu />
+          {/* <WorkspaceNavMenu /> */}
         </SidebarFooter>
         <SidebarRail />
       </Sidebar>