♻️ refactor(home): build serverAddress using ${window.location.origin}

Replace the fallback assignment of serverAddress in `web/src/pages/Home/index.jsx`
to use a template literal for `window.location.origin`.

- Aligns with the preferred style for constructing base URLs
- Keeps formatting consistent across the app
- No functional changes; behavior remains the same
- Lint passes with no new warnings or errors

Files affected:
- web/src/pages/Home/index.jsx

web/src/pages/Home/index.jsx

@@ -41,7 +41,7 @@ const Home = () => {
   const isMobile = useIsMobile();
   const isDemoSiteMode = statusState?.status?.demo_site_enabled || false;
   const docsLink = statusState?.status?.docs_link || '';
-  const serverAddress = statusState?.status?.server_address || window.location.origin;
+  const serverAddress = statusState?.status?.server_address || `${window.location.origin}`;
   const endpointItems = API_ENDPOINTS.map((e) => ({ value: e }));
   const [endpointIndex, setEndpointIndex] = useState(0);
   const isChinese = i18n.language.startsWith('zh');