feat: 添加功能调查问卷，218项功能可在线打分

frontend/src/components/layout/TopNav.tsx

@@ -1,5 +1,5 @@
 import { Link, useNavigate } from 'react-router-dom'
-import { ChevronDown, Settings as SettingsIcon, Bell, Menu, HelpCircle, Smartphone } from 'lucide-react'
+import { ChevronDown, Settings as SettingsIcon, Bell, Menu, HelpCircle, Smartphone, ClipboardList } from 'lucide-react'
 import { useState } from 'react'
 import { useQuery } from '@tanstack/react-query'
 import { useAuthStore } from '../../store/authStore'
@@ -7,6 +7,7 @@ import api from '../../lib/api'
 import Breadcrumb from './Breadcrumb'
 import HelpModal from '../HelpModal'
 import PortalQRModal from '../PortalQRModal'
+import SurveyModal from '../SurveyModal'
 
 export default function TopNav({ onMenuClick }: { onMenuClick?: () => void }) {
   const navigate = useNavigate()
@@ -14,6 +15,7 @@ export default function TopNav({ onMenuClick }: { onMenuClick?: () => void }) {
   const [menuOpen, setMenuOpen] = useState(false)
   const [helpOpen, setHelpOpen] = useState(false)
   const [portalQROpen, setPortalQROpen] = useState(false)
+  const [surveyOpen, setSurveyOpen] = useState(false)
 
   const { data: dashboardData } = useQuery<any>({
     queryKey: ['dashboard'],
@@ -58,6 +60,14 @@ export default function TopNav({ onMenuClick }: { onMenuClick?: () => void }) {
             <HelpCircle className="w-4 h-4 text-gray-600" />
           </button>
           <HelpModal open={helpOpen} onClose={() => setHelpOpen(false)} />
+          <button
+            onClick={() => setSurveyOpen(true)}
+            className="p-1.5 rounded-md hover:bg-gray-100"
+            aria-label="功能调查"
+          >
+            <ClipboardList className="w-4 h-4 text-gray-600" />
+          </button>
+          <SurveyModal open={surveyOpen} onClose={() => setSurveyOpen(false)} />
           <Link to="/settings" className="p-1.5 rounded-md hover:bg-gray-100" aria-label="设置">
             <SettingsIcon className="w-4 h-4 text-gray-600" />
           </Link>