feat(M08-B): 补保洁员端统计看板

miniapp/pages/cleaner/tasks.wxml

@@ -3,7 +3,7 @@
     <view class="header">
       <view>
         <view class="title">保洁任务</view>
-        <view class="muted">待结算 {{stats.pendingSettlementText}}</view>
+        <view class="muted">待结算 {{stats.pendingSettlementText}} · 已结算 {{stats.settledRewardText}}</view>
       </view>
       <button size="mini" loading="{{loading}}" bindtap="refreshAll">刷新</button>
     </view>
@@ -20,6 +20,25 @@
       <text>完成 {{stats.byStatus.COMPLETED || 0}}</text>
     </view>
 
+    <view class="stats-board">
+      <view class="stats-card">
+        <text>任务总数</text>
+        <strong>{{stats.taskTotal}}</strong>
+      </view>
+      <view class="stats-card">
+        <text>完成率</text>
+        <strong>{{stats.completionRate}}%</strong>
+      </view>
+      <view class="stats-card">
+        <text>驳回</text>
+        <strong>{{stats.rejected}}</strong>
+      </view>
+      <view class="stats-card">
+        <text>已结算</text>
+        <strong>{{stats.settledRewardText}}</strong>
+      </view>
+    </view>
+
     <view wx:if="{{errorMessage}}" class="error">{{errorMessage}}</view>
 
     <block wx:if="{{activeTab === 'hall'}}">