refactor: OSS base URL 与 logo URL 改由 API 下发 (AGENTS.md 合规)

src/components/Topbar.tsx

@@ -10,6 +10,7 @@ import {
   WalletOutlined,
 } from "@ant-design/icons";
 import { LocalAvatar } from "./LocalAvatar";
+import { getLogoUrl } from "../api/publicConfigClient";
 import type { WebUserSession } from "../types";
 
 interface TopbarProps {
@@ -110,7 +111,7 @@ export function Topbar({
         onClick={onOpenWorkspace}
       >
         <span className="ecommerce-standalone__logo" aria-hidden="true">
-          <img src="https://stringtest.oss-cn-hangzhou.aliyuncs.com/logo.png" alt="" />
+          <img src={getLogoUrl()} alt="" />
         </span>
         <strong>OmniAI 电商智能体</strong>
       </button>