feat: 推广粘贴上传功能至所有图片上传页面（purchase/buy/product/semi）

inventory-web/src/views/purchase/index.vue

@@ -147,7 +147,7 @@
             </el-form-item>
           </el-col>
           <el-col :span="24">
-            <el-form-item label="图片上传" required>
+            <el-form-item label="图片上传" required id="upload-purchase-images">
               <el-upload
                   v-model:file-list="fileList"
                   :http-request="customUpload"
@@ -244,6 +244,7 @@ import {
   approvePurchase, getPurchaseApprovers, autoFillPurchase
 } from '@/api/purchase'
 import { uploadFile, deleteFile } from '@/api/common/upload'
+import { usePasteUpload } from '@/hooks/usePasteUpload'
 import type { FormInstance } from 'element-plus'
 
 const userStore = useUserStore()
@@ -490,6 +491,8 @@ const customUpload = async (options: any) => {
     if (res.code === 200) {
       const newUrl = res.data.url
       form.value.images!.push(newUrl)
+      // 同步更新 fileList，触发 el-upload UI 刷新
+      fileList.value.push({ name: newUrl.split('/').pop(), url: getImageUrl(newUrl) })
       onSuccess(res)
     } else {
       ElMessage.error(res.msg || '上传失败')
@@ -512,6 +515,12 @@ const handleRemoveImage = async (uploadFile: any) => {
   }
 }
 
+// 粘贴上传处理器（PC 端：鼠标悬停 + Ctrl+V 直接粘贴图片）
+const handlePasteLink = (link: string, field: string) => {
+  // 采购单没有独立的外链输入框，暂不支持网页图片链接自动填入
+}
+usePasteUpload(customUpload, 'images', '#upload-purchase-images', handlePasteLink)
+
 // --- 提交 ---
 const submitForm = async () => {
   if (!form.value.name.trim()) { ElMessage.warning('请选择或填写采购物品'); return }