v0.0.53: 공유 모달·헤더 사용자 메뉴·회원가입·로그인 화면

Co-authored-by: Cursor <cursoragent@cursor.com>

components/site/RightSidebar.vue

@@ -179,7 +179,7 @@ const { data: siteSettings } = await useFetch('/api/site-settings', {
       </div>
     </div>
 
-    <footer class="right-sidebar__footer shrink-0 border-t border-[var(--site-line)] py-4 pl-5 pr-0 text-xs site-muted">
+    <footer class="right-sidebar__footer shrink-0 py-4 pl-5 pr-0 text-xs site-muted">
       {{ siteSettings.copyrightText }}
     </footer>
   </aside>