feat: 新增验收测试清单(199项24域)替代功能调查问卷; 修复工作台评分环文字重叠

- 新增 acceptance-test.html 交互式验收测试页面(验收人姓名/自动补全/自动统计/CSV+Excel下载)
- 新增 AcceptanceTestModal 组件, TopNav 中用验收测试弹窗替代 SurveyModal
- Settings 页问卷导出替换为验收测试结果导出(支持多验收人汇总MD)
- 修复 Dashboard 合规健康度评分环文字重叠: 圆环增大至w-32, 加overflow-hidden+truncate

frontend/src/pages/Dashboard.tsx

@@ -265,7 +265,7 @@ export default function Dashboard() {
               <Card>
                 <div className="flex items-center gap-4">
                   {/* SVG 环形评分 */}
-                  <div className="relative w-28 h-28 shrink-0">
+                  <div className="relative w-32 h-32 shrink-0">
                     <ResponsiveContainer width="100%" height="100%">
                       <RadialBarChart
                         innerRadius="70%"
@@ -278,9 +278,9 @@ export default function Dashboard() {
                         <RadialBar background dataKey="value" cornerRadius={8} />
                       </RadialBarChart>
                     </ResponsiveContainer>
-                    <div className="absolute inset-0 flex flex-col items-center justify-center">
-                      <span className={`text-2xl font-bold ${complianceScore?.level === 'safe' ? 'text-safe' : complianceScore?.level === 'warning' ? 'text-warning' : 'text-danger'}`}>{complianceScore?.overallScore ?? complianceScore?.totalScore ?? 0}</span>
-                      <span className="text-xs text-gray-500">{complianceScore?.levelLabel ?? complianceScore?.summary ?? ''}</span>
+                    <div className="absolute inset-0 flex flex-col items-center justify-center px-2 overflow-hidden">
+                      <span className={`text-2xl font-bold leading-none ${complianceScore?.level === 'safe' ? 'text-safe' : complianceScore?.level === 'warning' ? 'text-warning' : 'text-danger'}`}>{complianceScore?.overallScore ?? complianceScore?.totalScore ?? 0}</span>
+                      <span className="text-xs text-gray-500 mt-1 truncate max-w-full">{complianceScore?.levelLabel ?? ''}</span>
                     </div>
                   </div>
                   {/* 5 维度评分 */}