feat(web): add Privacy Policy and Terms of Service pages

- Create /chinh-sach-bao-mat (Privacy Policy) with 10 sections
- Create /dieu-khoan-su-dung (Terms of Service) with 11 sections
- Add legal link group to footer (vi + en i18n)
- Add legalLinks prop to Footer for bottom-bar display
- Wire links into public layout

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/app/[locale]/(public)/layout.tsx

@@ -117,6 +117,13 @@ export default function PublicLayout({ children }: { children: React.ReactNode }
         { label: t('common.register'), href: '/register' },
       ],
     },
+    {
+      title: t('footer.legal'),
+      links: [
+        { label: t('footer.privacyPolicy'), href: '/chinh-sach-bao-mat' },
+        { label: t('footer.termsOfService'), href: '/dieu-khoan-su-dung' },
+      ],
+    },
   ];
 
   return (
@@ -163,6 +170,10 @@ export default function PublicLayout({ children }: { children: React.ReactNode }
         description={t('footer.description')}
         linkGroups={footerLinkGroups}
         copyright={t('common.allRightsReserved')}
+        legalLinks={[
+          { label: t('footer.privacyPolicy'), href: '/chinh-sach-bao-mat' },
+          { label: t('footer.termsOfService'), href: '/dieu-khoan-su-dung' },
+        ]}
         contact={{
           address: 'TP. Hồ Chí Minh, Việt Nam',
           phone: '1900 xxxx',