fix:批量修复了一些问题

frontend/src/App.tsx

@@ -1,13 +1,15 @@
 /**
  * 主应用入口
  *
- * 整合前台(报纸风格)和后台(暗色管理)的路由。
- * - /       → 先知(Profeto)主站
- * - /admin/* → 管理后台
+ * 顶层三分区导航:
+ * - 比赛/预测 → 公开,报纸风赛程 + 预测
+ * - 评估      → 只读(后端需 admin 鉴权,未登录引导登录)
+ * - 管理      → 采集/回测/配置等(需登录)
  */
 
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
 import { ErrorBoundary } from './components/ErrorBoundary'
+import { useState } from 'react'
 import Matches from './pages/Matches'
 import { adminRoutes } from './admin/routes'
 
@@ -21,10 +23,34 @@ function dateLine(): string {
   })
 }
 
+/** 顶层导航三分区 */
+type TopView = 'matches' | 'eval' | 'admin'
+
+function TopNav({ onNavigate }: { onNavigate: (v: TopView) => void }) {
+  const go = (v: TopView) => {
+    onNavigate(v)
+    const path = v === 'matches' ? '/' : v === 'eval' ? '/admin/eval' : '/admin'
+    window.location.assign(path)
+  }
+  return (
+    <nav className="flex items-center justify-center gap-1 border-b border-ink-200" aria-label="主导航">
+      <button onClick={() => go('matches')} className="tab">
+        <span aria-hidden="true">◇</span> 比赛 / 预测
+      </button>
+      <button onClick={() => go('eval')} className="tab">
+        <span aria-hidden="true">◈</span> 评估
+      </button>
+      <button onClick={() => go('admin')} className="tab">
+        <span aria-hidden="true">⚙</span> 管理
+      </button>
+    </nav>
+  )
+}
+
 function HomePage() {
   return (
     <div className="min-h-screen bg-paper-50">
-      {/* ── 报头:粗线 + 居中刊名 + 报眉 ── */}
+      {/* ── 报头:粗线 + 居中刊名 + 顶层导航 ── */}
       <header className="masthead-rule">
         <div className="mx-auto max-w-5xl px-5 sm:px-8">
           <div className="border-b border-ink-900 py-5 text-center sm:py-6">
@@ -40,14 +66,8 @@ function HomePage() {
           </div>
           <div className="flex items-center justify-between border-b border-ink-200 py-2 text-2xs text-ink-500">
             <span>{dateLine()}</span>
-            <a
-              href="/admin"
-              className="flex items-center gap-1.5 text-press hover:text-press-dark transition-colors"
-            >
-              <span aria-hidden="true">⚙</span>
-              管理后台
-            </a>
           </div>
+          <TopNav onNavigate={() => {}} />
         </div>
       </header>
 
@@ -64,12 +84,18 @@ function HomePage() {
   )
 }
 
+/** 管理入口页:直接导向 /admin,由 AdminLayout 处理鉴权(未登录显示登录页) */
+function AdminEntry() {
+  return <Navigate to="/admin" replace />
+}
+
 export default function App() {
   return (
     <ErrorBoundary>
       <BrowserRouter>
         <Routes>
           <Route path="/" element={<HomePage />} />
+          <Route path="/admin" element={<AdminEntry />} />
           {adminRoutes.map(route => (
             <Route key={route.path} path={route.path} element={route.element}>
               {route.children.map(child => (
@@ -88,3 +114,4 @@ export default function App() {
     </ErrorBoundary>
   )
 }
+