fix: 修复工时显示浮点数精度问题

frontend/src/views/CreateTask.vue

@@ -1180,14 +1180,21 @@ const formatWorkHours = (hours: number): string => {
   
   const WORK_HOURS_PER_DAY = 8
   const days = Math.floor(hours / WORK_HOURS_PER_DAY)
-  const remainingHours = hours % WORK_HOURS_PER_DAY
+  // 处理浮点数精度问题，保留两位小数
+  let remainingHours = Math.round((hours % WORK_HOURS_PER_DAY) * 100) / 100
+  
+  // 格式化小时显示
+  const formatHours = (h: number): string => {
+    if (Number.isInteger(h)) return `${h}小时`
+    return `${h.toFixed(2).replace(/\.?0+$/, '')}小时`
+  }
   
   if (days === 0) {
-    return `${remainingHours}小时`
+    return formatHours(remainingHours)
   } else if (remainingHours === 0) {
     return `${days}天`
   } else {
-    return `${days}天${remainingHours}小时`
+    return `${days}天${formatHours(remainingHours)}`
   }
 }