完善节目管理与回放播放体验

frontend/src/admin/AdminLayout.tsx

@@ -13,8 +13,8 @@ const { Text } = Typography
 
 const menuItems = [
   { key: '/admin', icon: <DashboardOutlined />, label: '概览' },
-  { key: '/admin/streams', icon: <VideoCameraOutlined />, label: '直播列表' },
-  { key: '/admin/streams/new', icon: <PlusOutlined />, label: '创建直播' },
+  { key: '/admin/streams', icon: <VideoCameraOutlined />, label: '节目列表' },
+  { key: '/admin/streams/new', icon: <PlusOutlined />, label: '创建节目' },
   { key: '/admin/nodes', icon: <CloudServerOutlined />, label: '边缘节点' },
   { key: '/admin/settings', icon: <SettingOutlined />, label: '系统设置' },
 ]