修改页面，完成单页模式新增首页返回上一页按钮

public/js/ceremony-admin-pages.js

@@ -486,9 +486,7 @@
   function redirectUnauthorized(api, error) {
     if (!shouldRedirectToLogin(api, error)) return false;
     if (api && api.clearToken) api.clearToken();
-    if (!root.location) return true;
-    if (typeof root.location.replace === 'function') root.location.replace('login.html');
-    else root.location.href = 'login.html';
+    root.NavigationUtil.open('login.html');
     return true;
   }
 
@@ -876,7 +874,7 @@
       if (!savedId) throw new Error('保存响应缺少 ceremonyId');
       verified = normalizeCeremony(await api.ceremonyDetail(genealogyId, savedId));
       if (!verified || verified.ceremonyId !== savedId) throw new Error('保存后未能重读同一活动');
-      if (root.location) root.location.href = buildDetailUrl(genealogyId, savedId);
+      root.NavigationUtil.open(buildDetailUrl(genealogyId, savedId));
     } catch (error) {
       if (redirectUnauthorized(api, error)) return;
       setStatus(
@@ -974,7 +972,7 @@
     try {
       await api.deleteCeremony(genealogyId, ceremonyId);
       if (query('[data-ceremony-list-page]')) await loadCeremonies();
-      else if (root.location) root.location.href = buildListUrl(genealogyId);
+      else root.NavigationUtil.open(buildListUrl(genealogyId));
     } catch (error) {
       if (redirectUnauthorized(api, error)) return;
       showMessage(isForbidden(error) ? '当前账号无权删除该活动。' : (error.message || '活动删除失败'));