feat: 工时显示转换为工作日格式（8小时=1天）

frontend/src/views/CreateTask.vue

@@ -174,7 +174,7 @@
                         <div class="group-summary">
                           <span class="summary-item">{{ group.totalScore }}分</span>
                           <span class="summary-divider">|</span>
-                          <span class="summary-item">{{ group.totalHours }}小时</span>
+                          <span class="summary-item">{{ formatWorkHours(group.totalHours) }}</span>
                         </div>
                       </div>
                       <div class="group-items">
@@ -196,7 +196,7 @@
                     <span>总计：</span>
                     <span class="footer-score">{{ totalPipelineScore }}分</span>
                     <span class="footer-divider">|</span>
-                    <span class="footer-hours">{{ totalPipelineHours }}小时</span>
+                    <span class="footer-hours">{{ formatWorkHours(Number(totalPipelineHours)) }}</span>
                     <span class="footer-divider">|</span>
                     <span class="footer-groups">{{ pipelineGroups.length }}个子任务组</span>
                   </div>
@@ -1174,6 +1174,23 @@ const totalPipelineHours = computed(() => {
   return pipelineGroups.value.reduce((sum, group) => sum + group.totalHours, 0).toFixed(1)
 })
 
+// 格式化工时显示（8小时=1个工作日）
+const formatWorkHours = (hours: number): string => {
+  if (hours === 0) return '0小时'
+  
+  const WORK_HOURS_PER_DAY = 8
+  const days = Math.floor(hours / WORK_HOURS_PER_DAY)
+  const remainingHours = hours % WORK_HOURS_PER_DAY
+  
+  if (days === 0) {
+    return `${remainingHours}小时`
+  } else if (remainingHours === 0) {
+    return `${days}天`
+  } else {
+    return `${days}天${remainingHours}小时`
+  }
+}
+
 // 计算积分
 const calculateScore = () => {
   // 计算已在computed中完成