feat: 环境监测模块页码更新与卡片内容优化

- 员工端健康监测首页：环境监测卡片显示4个监测类型等级（室外空气、室内空气、水质、花粉）
- 导航页index.html：添加环境监测模块3个新页面到页码统计

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

employee-app/health-monitor/index.html

@@ -178,9 +178,10 @@ body { background: #f0f2f5; display: flex; justify-content: center; align-items:
         <div class="entry-info">
           <div class="entry-name">环境监测</div>
           <div class="entry-metrics">
-            <span class="entry-metric">空气质量 <strong>AQI 45</strong> <span class="badge badge--good">优</span></span>
+            <span class="entry-metric">室外空气 <span class="badge badge--good">优</span></span>
+            <span class="entry-metric">室内空气 <span class="badge badge--good">清洁</span></span>
             <span class="entry-metric">水质 <span class="badge badge--good">达标</span></span>
-            <span class="entry-metric">过敏 <span class="badge badge--normal">低风险</span></span>
+            <span class="entry-metric">花粉 <span class="badge badge--normal">低</span></span>
           </div>
           <div class="entry-time-tag">05-25 09:30 更新</div>
         </div>