fix: 花名册身份证搜索bug修复 + Header企业名称 + 优化文档更新

- 修复Roster.tsx前端二次过滤清空身份证搜索结果的问题
- TopNav增加企业名称显示（复用settingsApi.org()）
- 新增docs/20260804-优化.md（23项反馈全面审查）
- 更新20260803-优化.md状态（问题5已完成）

frontend/src/components/layout/TopNav.tsx

@@ -3,7 +3,7 @@ import { ChevronDown, Settings as SettingsIcon, Bell, Menu, HelpCircle, Smartpho
 import { useState } from 'react'
 import { useQuery } from '@tanstack/react-query'
 import { useAuthStore } from '../../store/authStore'
-import { dashboardApi } from '../../lib/api-services'
+import { dashboardApi, settingsApi } from '../../lib/api-services'
 import Breadcrumb from './Breadcrumb'
 import HelpModal from '../HelpModal'
 import PortalQRModal from '../PortalQRModal'
@@ -22,6 +22,11 @@ export default function TopNav({ onMenuClick }: { onMenuClick?: () => void }) {
     queryFn: () => dashboardApi.data(),
     refetchInterval: 60000,
   })
+  const { data: orgData } = useQuery<any>({
+    queryKey: ['org-settings'],
+    queryFn: () => settingsApi.org(),
+    staleTime: 300000,
+  })
   const riskCount = dashboardData?.riskSummary?.pending || 0
 
   return (
@@ -36,6 +41,12 @@ export default function TopNav({ onMenuClick }: { onMenuClick?: () => void }) {
           >
             <Menu className="w-5 h-5 text-gray-600" />
           </button>
+          {orgData?.name && (
+            <span className="hidden sm:inline text-sm font-medium text-gray-700 shrink-0">
+              {orgData.name}
+            </span>
+          )}
+          {orgData?.name && <span className="hidden sm:inline text-gray-300 shrink-0">|</span>}
           <Breadcrumb />
         </div>
 

frontend/src/pages/Roster.tsx

@@ -265,7 +265,7 @@ export default function Roster() {
   })
 
   const filtered = employees?.filter((e: any) =>
-    !search || e.name.includes(search) || e.department.includes(search)
+    !search || e.name.includes(search) || e.department.includes(search) || (e.idCardMasked && e.idCardMasked.includes(search))
   ) || []
 
   if (selectedId) {