Add multi-session auth and changelog tracking

client/src/components/DashboardLayout.tsx

@@ -51,6 +51,7 @@ const menuItems: MenuItem[] = [
   { icon: Trophy, label: "排行榜", path: "/leaderboard", group: "stats" },
   { icon: BookOpen, label: "教程库", path: "/tutorials", group: "learn" },
   { icon: Bell, label: "训练提醒", path: "/reminders", group: "learn" },
+  { icon: ScrollText, label: "更新日志", path: "/changelog", group: "learn" },
   { icon: ScrollText, label: "系统日志", path: "/logs", group: "learn" },
   { icon: Microscope, label: "视觉测试", path: "/vision-lab", group: "learn", adminOnly: true },
   { icon: Shield, label: "管理系统", path: "/admin", group: "learn", adminOnly: true },