移除自选和回测功能

Co-Authored-By: Claude <noreply@anthropic.com>

serve/frontend/src/components/Layout.tsx

@@ -16,9 +16,7 @@ import {
 } from '@/lib/useSharedQueries'
 import { QK } from '@/lib/queryKeys'
 import {
-  Star,
   ScanSearch,
-  History,
   FileText,
   Settings,
   Key,
@@ -47,9 +45,7 @@ const BRAND = '#8B5CF6'
 
 const nav = [
   { to: '/',                label: '看板',     icon: LayoutDashboard },
-  { to: '/watchlist',  label: '自选',   icon: Star },
   { to: '/screener',   label: '策略',   icon: ScanSearch },
-  { to: '/backtest',   label: '回测',   icon: History },
   { to: '/stock-analysis',    label: '个股分析', icon: TrendingUp },
   { to: '/limit-ladder', label: '连板梯队', icon: Flame },
   { to: '/concept-analysis', label: '概念分析', icon: Layers3 },