feat(公告): 仪表盘公告卡片支持 summary 摘要并优化卡片布局

- announcement.json/reply_server.py/app.js 增加 summary 字段，前端优先展示摘要、回退到原 message
- dashboard.css 调整卡片为垂直居中、消息两行省略、关闭按钮 flex 居中，缓解长公告把卡片撑高的问题

announcement.json

@@ -5,6 +5,7 @@
       "enabled": true,
       "level": "warning",
       "title": "v2.0.0 大版本升级提醒",
+      "summary": "v2.0.0 已发布：本次为大版本升级，涉及登录、滑块、在线客服、商品发布和历史订单等重要调整，建议查看说明后手动升级。",
       "message": "v2.0.0 已发布，本次包含登录、扫码、滑块验证、Token刷新、在线客服、商品发布、历史订单同步和数据库结构等较大调整。由于涉及依赖、浏览器自动化和运行环境变化，不建议仅通过在线热更新完成升级。升级前请先备份 data 目录。源码部署用户请拉取最新代码后执行 pip install -r requirements.txt、playwright install chromium 并重启服务；Docker 镜像部署用户请拉取最新镜像并重启容器；本地源码构建 Docker 的用户请重新构建容器。若在线更新后出现登录、扫码、滑块或页面异常，请改用手动方式重新部署。",
       "dismissible": true,
       "published_at": "2026-05-19T02:00:00+08:00",

reply_server.py

@@ -243,7 +243,8 @@ def _normalize_dashboard_announcement_entry(payload: Any) -> Optional[Dict[str,
     end_at = _parse_announcement_datetime(payload.get('end_at'))
     title = str(payload.get('title') or '').strip()
     message = str(payload.get('message') or '').strip()
-    if not title and not message:
+    summary = str(payload.get('summary') or payload.get('brief') or payload.get('short_message') or '').strip()
+    if not title and not message and not summary:
         return None
 
     level = str(payload.get('level') or 'info').strip().lower()
@@ -281,6 +282,7 @@ def _normalize_dashboard_announcement_entry(payload: Any) -> Optional[Dict[str,
         'status': status,
         'level': level,
         'title': title,
+        'summary': summary,
         'message': message,
         'action_text': action_text,
         'action_type': action_type,

static/css/dashboard.css

@@ -28,7 +28,7 @@
 
 .dashboard-announcement-card {
   display: flex;
-  align-items: flex-start;
+  align-items: center;
   gap: 0.75rem;
   min-height: 72px;
   padding: 0.85rem 0.95rem;
@@ -89,11 +89,15 @@
   font-size: 0.8rem;
   line-height: 1.45;
   white-space: pre-line;
+  overflow: hidden;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
 }
 
 .dashboard-announcement-actions {
   display: inline-flex;
-  align-items: flex-start;
+  align-items: center;
   gap: 0.45rem;
   flex: 0 0 auto;
 }
@@ -118,6 +122,15 @@
 .dashboard-announcement-close {
   width: 32px;
   padding: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  line-height: 1;
+}
+
+.dashboard-announcement-close .bi {
+  display: block;
+  line-height: 1;
 }
 
 .dashboard-announcement-action:hover,

static/js/app.js

@@ -574,6 +574,8 @@ function renderDashboardAnnouncement() {
         : 'info';
     const title = String(currentAnnouncement.title || '').trim();
     const message = String(currentAnnouncement.message || '').trim();
+    const summary = String(currentAnnouncement.summary || currentAnnouncement.brief || currentAnnouncement.short_message || '').trim();
+    const displayMessage = summary || message;
     const actionText = String(currentAnnouncement.action_type ? (currentAnnouncement.action_text || '') : '').trim();
     const dismissible = currentAnnouncement.dismissible !== false;
 
@@ -592,7 +594,7 @@ function renderDashboardAnnouncement() {
                 </span>
                 <span class="dashboard-announcement-body">
                     ${title ? `<span class="dashboard-announcement-title">${escapeHtml(title)}</span>` : ''}
-                    ${message ? `<span class="dashboard-announcement-message">${escapeHtml(message)}</span>` : ''}
+                    ${displayMessage ? `<span class="dashboard-announcement-message">${escapeHtml(displayMessage)}</span>` : ''}
                 </span>
             </button>
             <div class="dashboard-announcement-actions">