fix: 改进拖拽排序实现，整个item可拖拽并添加详细调试日志

frontend/src/views/CreateTask.vue

@@ -71,18 +71,19 @@
                   :key="item.id"
                   class="task-type-item"
                   :class="{ 'dragging': dragIndex === index, 'drag-over': dragOverIndex === index }"
+                  draggable="true"
+                  @dragstart="handleDragStart($event, index)"
+                  @dragend="handleDragEnd"
                   @dragover.prevent="handleDragOver($event, index)"
                   @dragleave="handleDragLeave"
-                  @drop="handleDrop($event, index)"
+                  @drop.prevent="handleDrop($event, index)"
                 >
                   <div class="task-type-row">
                     <!-- 拖拽手柄 -->
                     <div 
                       class="drag-handle" 
                       title="拖拽调整顺序"
-                      draggable="true"
-                      @dragstart="handleDragStart($event, index)"
-                      @dragend="handleDragEnd"
+                      @mousedown.prevent
                     >
                       <Icon name="menu" size="sm" />
                     </div>
@@ -556,7 +557,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted, onUnmounted, watch } from 'vue'
+import { ref, reactive, computed, onMounted, onUnmounted, watch, nextTick } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { message } from 'ant-design-vue'
 import type { UploadFile, UploadProps } from 'ant-design-vue'
@@ -953,13 +954,31 @@ const removeTaskType = (index: number) => {
 
 // 拖拽开始
 const handleDragStart = (e: DragEvent, index: number) => {
+  const target = e.target as HTMLElement
+  
+  // 如果点击的是可交互元素（input、select、button等），阻止拖拽
+  if (target.tagName === 'INPUT' || 
+      target.tagName === 'SELECT' || 
+      target.tagName === 'BUTTON' ||
+      target.closest('input, select, button, .ant-cascader, .ant-input-number, .ant-select')) {
+    e.preventDefault()
+    return false
+  }
+  
+  // 只有从拖拽手柄或空白区域开始拖拽才允许
+  if (!target.closest('.drag-handle') && !target.closest('.task-type-item')) {
+    e.preventDefault()
+    return false
+  }
+  
   dragIndex.value = index
+  
   if (e.dataTransfer) {
     e.dataTransfer.effectAllowed = 'move'
     e.dataTransfer.setData('text/plain', String(index))
     e.dataTransfer.setData('application/json', JSON.stringify({ index }))
+    
     // 设置拖拽图像为整个 item
-    const target = e.target as HTMLElement
     const itemElement = target.closest('.task-type-item') as HTMLElement
     if (itemElement) {
       // 创建一个临时元素作为拖拽图像
@@ -967,11 +986,18 @@ const handleDragStart = (e: DragEvent, index: number) => {
       dragImage.style.opacity = '0.8'
       dragImage.style.position = 'absolute'
       dragImage.style.top = '-1000px'
+      dragImage.style.width = itemElement.offsetWidth + 'px'
       document.body.appendChild(dragImage)
       e.dataTransfer.setDragImage(dragImage, e.offsetX, e.offsetY)
-      setTimeout(() => document.body.removeChild(dragImage), 0)
+      setTimeout(() => {
+        if (document.body.contains(dragImage)) {
+          document.body.removeChild(dragImage)
+        }
+      }, 0)
     }
   }
+  
+  return true
 }
 
 // 拖拽结束
@@ -1006,30 +1032,49 @@ const handleDrop = (e: DragEvent, targetIndex: number) => {
     if (data) {
       sourceIndex = parseInt(data, 10)
     } else {
+      console.warn('无法获取拖拽源索引')
       handleDragEnd()
       return
     }
   }
   
-  if (sourceIndex === null || sourceIndex === targetIndex || sourceIndex < 0 || targetIndex < 0) {
+  if (sourceIndex === null || isNaN(sourceIndex) || sourceIndex < 0 || targetIndex < 0) {
+    console.warn('无效的拖拽索引:', { sourceIndex, targetIndex })
     handleDragEnd()
     return
   }
   
-  console.log('拖拽排序:', sourceIndex, '->', targetIndex)
+  if (sourceIndex === targetIndex) {
+    console.log('拖拽到相同位置，无需移动')
+    handleDragEnd()
+    return
+  }
   
-  // 交换位置 - 使用 splice 原地修改数组以确保响应式更新
+  console.log('开始拖拽排序:', {
+    sourceIndex,
+    targetIndex,
+    before: formData.taskTypes.map((t, i) => ({ index: i, id: t.id, taskTypeId: t.taskTypeId }))
+  })
+  
+  // 创建新数组并交换位置
   const newTaskTypes = [...formData.taskTypes]
   const [removed] = newTaskTypes.splice(sourceIndex, 1)
   newTaskTypes.splice(targetIndex, 0, removed)
   
-  // 直接替换整个数组以触发 Vue 的响应式更新
+  console.log('拖拽后数组:', newTaskTypes.map((t, i) => ({ index: i, id: t.id, taskTypeId: t.taskTypeId })))
+  
+  // 直接替换整个数组（reactive 对象会自动响应）
   formData.taskTypes = newTaskTypes
   
+  // 等待 DOM 更新后再检查
+  nextTick(() => {
+    console.log('DOM更新后数组:', formData.taskTypes.map((t, i) => ({ index: i, id: t.id, taskTypeId: t.taskTypeId })))
+  })
+  
   // 重新计算积分（pipelineGroups 是 computed，会自动更新）
   calculateScore()
   
-  message.success('任务顺序已调整')
+  message.success(`任务顺序已调整: 第 ${sourceIndex + 1} 项移动到第 ${targetIndex + 1} 项`)
   
   handleDragEnd()
 }