chore: checkpoint admin editor and perf work

frontend/src/layouts/BaseLayout.astro

@@ -5,21 +5,25 @@ import Footer from '../components/Footer.astro';
 import BackToTop from '../components/interactive/BackToTop.svelte';
 import { api, DEFAULT_SITE_SETTINGS } from '../lib/api/client';
 import { getI18n, LOCALE_COOKIE_NAME, SUPPORTED_LOCALES } from '../lib/i18n';
+import type { SiteSettings } from '../lib/types';
 
 interface Props {
   title?: string;
   description?: string;
+  siteSettings?: SiteSettings;
 }
 
 const props = Astro.props;
 const { locale, messages } = getI18n(Astro);
 
-let siteSettings = DEFAULT_SITE_SETTINGS;
+let siteSettings = props.siteSettings ?? DEFAULT_SITE_SETTINGS;
 
-try {
-  siteSettings = await api.getSiteSettings();
-} catch (error) {
-  console.error('Failed to load site settings:', error);
+if (!props.siteSettings) {
+  try {
+    siteSettings = await api.getSiteSettings();
+  } catch (error) {
+    console.error('Failed to load site settings:', error);
+  }
 }
 
 const title = props.title || siteSettings.siteTitle;
@@ -305,7 +309,7 @@ const i18nPayload = JSON.stringify({ locale, messages });
       </main>
 
       <Footer siteSettings={siteSettings} />
-      <BackToTop client:load />
+      <BackToTop client:idle />
     </div>
   </body>
 </html>