fix(frontend): keep browser API on same-origin rewrites in dev

Document that NEXT_PUBLIC_WAVELET_BACKEND_URL must stay unset for local
next dev so axios hits /api/* and Next rewrites proxy to the backend.

frontend/app/(docs)/docs/privacy-policy/page.tsx

@@ -1,18 +1,21 @@
+import { getTranslations } from 'next-intl/server';
 import { LegalPageLayout } from '@/components/common/docs/legal-page-layout';
-import { privacySections } from '@/components/common/docs/privacy';
+import { getPrivacySections } from '@/components/common/docs/privacy';
 import { TERMS_LAST_UPDATED } from '@/components/common/docs/terms';
 
-export default function PrivacyPolicyPage() {
+export default async function PrivacyPolicyPage() {
+  const t = await getTranslations('docs');
+
   return (
     <LegalPageLayout
-      title='隐私政策 (Privacy)'
+      title={t('privacy.title')}
       lastUpdated={TERMS_LAST_UPDATED}
-      sections={privacySections}
+      sections={getPrivacySections(t)}
       description={
         <span>
-          我们非常重视您的隐私保护。本政策将向您透明地展示我们如何收集、使用、存储您的个人信息，
+          {t('privacy.description')}
           <br className='hidden md:block' />
-          以及您享有的相关权利。
+          {t('privacy.descriptionRights')}
         </span>
       }
     />