公告增加每次显示模式

src/app/layout.tsx

@@ -58,6 +58,9 @@ export default async function RootLayout({
   let announcement =
     process.env.ANNOUNCEMENT ||
     '本网站仅提供影视信息搜索服务，所有内容均来自第三方网站。本站不存储任何视频资源，不对任何内容的准确性、合法性、完整性负责。';
+  // 公告显示模式：从环境变量读取，数据库模式下由管理面板配置覆盖
+  let announcementDisplayMode: 'once' | 'every' =
+    process.env.ANNOUNCEMENT_DISPLAY_MODE === 'every' ? 'every' : 'once';
 
   let doubanProxyType =
     process.env.NEXT_PUBLIC_DOUBAN_PROXY_TYPE || 'cmliussss-cdn-tencent';
@@ -136,6 +139,8 @@ export default async function RootLayout({
     const config = await getConfig();
     siteName = config.SiteConfig.SiteName;
     announcement = config.SiteConfig.Announcement;
+    announcementDisplayMode =
+      config.SiteConfig.AnnouncementDisplayMode === 'every' ? 'every' : 'once';
 
     doubanProxyType = config.SiteConfig.DoubanProxyType;
     doubanProxy = config.SiteConfig.DoubanProxy;
@@ -346,6 +351,7 @@ export default async function RootLayout({
           <SiteProvider
             siteName={siteName}
             announcement={announcement}
+            announcementDisplayMode={announcementDisplayMode}
             tmdbApiKey={tmdbApiKey}
           >
             <WatchRoomProvider>