feat(portal): 门户左侧栏目导航+首页视觉升级+主题正名批次-PortalSideNav模型+attachCategoryNavigation注入doCategory/doArticle三件套categoryPath/navTopId/sideNav(站点快照树推导零新增查询,home/search不注入);7主题侧栏两栏markup+窄屏横滚+顶导航祖先高亮+二级下拉当前项高亮+面包屑全路径;cms_category.home_style全链路(news_grid 16条8x2日期前缀/media_focus形态)+PortalListData.Item补source来源徽标四处装配;Banner机制gallery展示位→galleryBanners四列大图轮播(自由字符串零DDL);页脚config 12新键(footer_addresses多校区/qr_*/social_*含URL校验,footerAddressLines由PortalSiteSnapshot.of拆行派生);新增展示型皮肤包campus-glow;fresh-mint2正名fresh-mint(theme.json/头注释同步);AttachmentService scene白名单加category(单页富文本贴图免清孤儿);新增PortalSideNavIT 8+PortalHomeBlocksIT 3,CategoryServiceIT/SiteServiceIT/PortalSsrIT/ThemeContractIT等单类独跑全绿;附sql/clear_cms_data.sql全量清库脚本(清cms_*六表留平台账号/主题包/上传文件,测试数据重走用)

src/main/resources/templates/themes/blue-white/list.html

@@ -4,10 +4,27 @@
 <body>
 <header th:replace="~{${themeBase} + '/fragments/header' :: header}"></header>
 
-<main class="list-main">
+<main class="list-main" th:classappend="${sideNav != null} ? 'has-sidenav'">
+    <!-- 左侧栏目导航（docs/11）：模块有二级子栏目时展示"模块名 + 全部兄弟" -->
+    <aside class="side-nav" th:if="${sideNav != null}" aria-label="栏目导航">
+        <div class="side-nav-head" th:text="${sideNav.top.name}">模块名</div>
+        <ul class="side-nav-list">
+            <li class="side-nav-item" th:each="item : ${sideNav.items}"
+                th:classappend="${item.id == sideNav.activeId} ? 'active'">
+                <a th:if="${item.type == 3}" th:href="${item.linkUrl}" target="_blank" rel="noopener"
+                   th:text="${item.name}">子栏目</a>
+                <a th:unless="${item.type == 3}" th:href="${url.category(item.id)}" th:text="${item.name}">子栏目</a>
+            </li>
+        </ul>
+    </aside>
+    <div class="list-body">
     <nav class="breadcrumb" th:if="${searchMode != true}">
         <a th:href="${url.home()}">首页</a>
-        <span th:text="${category.name}">栏目</span>
+        <th:block th:each="node, st : ${categoryPath}">
+            <a th:if="${!st.last}" class="crumb-parent" th:href="${url.category(node.id)}"
+               th:text="${node.name}">父栏目</a>
+            <span th:if="${st.last}" th:text="${node.name}">栏目</span>
+        </th:block>
     </nav>
     <nav class="breadcrumb" th:if="${searchMode == true}">
         <a th:href="${url.home()}">首页</a>
@@ -42,6 +59,7 @@
         <a th:if="${cur < total}"
            th:href="${searchMode == true} ? ${url.search(q, cur + 1)} : ${url.category(listData.categoryId) + '?page=' + (cur + 1)}">下一页</a>
     </nav>
+    </div>
 </main>
 
 <footer th:replace="~{${themeBase} + '/fragments/footer' :: footer}"></footer>