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/campus-glow/fragments/header.html

@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<!-- 公共头部：顶条(日期+专业院系) + 品牌行(校徽/站名/搜索) + 栏目导航（数据契约与 default 一致，仅换皮） -->
+<header class="cg-header" th:fragment="header">
+    <a class="cg-skip-link" href="#main-content">跳到主要内容</a>
+
+    <div class="cg-topbar">
+        <div class="cg-container cg-topbar-inner">
+            <span class="cg-topbar-date" id="siteDate" th:aria-label="'今日日期'">加载日期…</span>
+            <div class="cg-topbar-side" th:if="${!site.colleges.isEmpty()}"
+                 th:with="collegesLabel=${site.config['colleges_label'] ?: '专业院系'}">
+                <div class="cg-colleges">
+                    <span class="cg-colleges-toggle">
+                        <a href="javascript:void(0)" th:text="${collegesLabel}">专业院系</a>
+                        <i class="cg-colleges-arrow" aria-hidden="true">▾</i>
+                    </span>
+                    <ul class="cg-colleges-menu">
+                        <li th:each="col : ${site.colleges}" th:classappend="${col.path == site.path} ? 'active'">
+                            <a th:href="${url.siteHome(col.path, col.publicBaseUrl)}"
+                               th:title="${col.name}" th:text="${col.name}">学院名称</a>
+                        </li>
+                    </ul>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <div class="cg-container cg-brand-row">
+        <div class="cg-site-brand">
+            <img th:if="${site.config['logo'] != null}" class="cg-site-logo"
+                 th:src="${url.upload(site.config['logo'])}" th:alt="${site.name}">
+            <a class="cg-site-name" th:href="${url.home()}" th:text="${site.name}">站点名称</a>
+        </div>
+        <form class="cg-site-search" th:action="${url.search('', null)}" method="get" role="search">
+            <input type="text" name="q" placeholder="站内搜索" aria-label="站内搜索">
+            <button type="submit">搜索</button>
+        </form>
+    </div>
+
+    <nav class="cg-nav" aria-label="栏目导航">
+        <ul class="cg-container">
+            <li th:classappend="${currentCategoryId == null} ? 'active'">
+                <a th:href="${url.home()}">首页</a>
+            </li>
+            <li th:each="cat : ${navCategories}"
+                th:classappend="${(currentCategoryId == cat.id ? 'active' : '') + (!cat.children.isEmpty() ? ' has-sub' : '')}">
+                <a th:if="${cat.type == 3}" th:href="${cat.linkUrl}" target="_blank" rel="noopener"
+                   th:text="${cat.name}">栏目</a>
+                <a th:unless="${cat.type == 3}" th:href="${url.category(cat.id)}"><span th:text="${cat.name}">栏目</span><i th:if="${!cat.children.isEmpty()}" class="cg-caret" aria-hidden="true">▾</i></a>
+                <ul class="cg-sub-nav" th:if="${!cat.children.isEmpty()}">
+                    <li th:each="sub : ${cat.children}">
+                        <a th:if="${sub.type == 3}" th:href="${sub.linkUrl}" target="_blank" rel="noopener"
+                           th:text="${sub.name}">子栏目</a>
+                        <a th:unless="${sub.type == 3}" th:href="${url.category(sub.id)}" th:text="${sub.name}">子栏目</a>
+                    </li>
+                </ul>
+            </li>
+        </ul>
+    </nav>
+</header>
+</html>