feat: 新增活动详情页+问卷填写页+问卷详情查看页

- 活动详情页:活动基本信息(名称/日期/状态/组织/联系人电话等)+问卷列表
- 联系电话支持点击拨打
- 问卷列表统一一个"去填写"按钮
- 填写流程:去填写→答题→提交→返回→已填写样式变化+隐藏按钮
- 已填写卡片可点击查看填写内容(绿色高亮已选答案)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

index.html

@@ -583,6 +583,9 @@ const SITE_MAP = [
       { file:'health-screening/checkin-record.html', label:'打卡记录' },
       { file:'health-screening/questionnaire-detail.html', label:'问卷详情' },
       { file:'health-checkup/index.html', label:'健康排查活动列表' },
+      { file:'health-checkup/activity-detail.html', label:'活动详情' },
+      { file:'health-checkup/activity-fill.html', label:'问卷填写' },
+      { file:'health-checkup/questionnaire-fill.html', label:'问卷详情查看' },
       { file:'weight/index.html', label:'体重监测首页' },
       { file:'weight/history.html', label:'体重历史数据' },
       { file:'weight/report-detail.html', label:'体重详细报告' },