updata:icon替换

frontend/app/routes/platform.tsx

@@ -8,7 +8,7 @@ import { Collapsible } from "@base-ui/react/collapsible";
 
 import type { Route } from "./+types/platform";
 import { Topbar } from "../components/common/Topbar";
-import Icon from "../components/common/Icon";
+import { BrandMark } from "../components/common/BrandMark";
 import {
   Sidebar,
   SidebarProvider,
@@ -221,7 +221,7 @@ function AuthenticatedLayout() {
             className={`flex h-[70px] items-center gap-2.5 border-b border-[var(--sidebar-border)] text-white ${sidebarCollapsed ? "justify-center px-0" : "px-[17px]"}`}
           >
             <span className="grid size-9 shrink-0 place-items-center text-[#5ca9ff]">
-              <Icon name="brand" size={31} />
+              <BrandMark size={31} />
             </span>
             {!sidebarCollapsed && (
               <span className="whitespace-nowrap text-[15px] font-bold tracking-[0.01em] max-xl:text-[13px]">