feat(stocking): useStockingForm 支持车辆明细附件上传

ItemRow 增加 attachment_files，mappedItems 映射 attachment，
新增车辆附件上传/删除方法并暴露。

Co-Authored-By: Claude <noreply@anthropic.com>

src/composables/useStockingForm.ts

@@ -67,6 +67,7 @@ export interface ItemRow {
   fob_transport_fee: number | undefined
   port_misc_fee: string
   remark: string
+  attachment_files?: { name: string; url: string; file_name: string }[]
   ocean_freight: string
   ocean_freight_currency: string
   ocean_freight_currency_snapshot: string
@@ -235,6 +236,7 @@ export function useStockingForm(isFinal = false, stockingId?: string | number) {
     fob_transport_fee: undefined,
     port_misc_fee: '',
     remark: '',
+    attachment_files: [],
     ocean_freight: '',
     ocean_freight_currency: 'CNY',
     ocean_freight_currency_snapshot: '人民币',
@@ -705,6 +707,48 @@ export function useStockingForm(isFinal = false, stockingId?: string | number) {
     }
   }
 
+  // 车辆明细附件上传
+  const itemUploadAction = `${import.meta.env.VITE_API_URL}/ticket/upload?scene=stock_orders`
+
+  const beforeItemAttachmentUpload = (file: File) => {
+    const isValidType = /\.(jpg|jpeg|png|gif|pdf|doc|docx|xls|xlsx|txt)$/i.test(file.name)
+    if (!isValidType) {
+      ElMessage.error('只能上传图片或文档文件！')
+      return false
+    }
+    const isLt10M = file.size / 1024 / 1024 < 10
+    if (!isLt10M) {
+      ElMessage.error('文件大小不能超过 10MB!')
+      return false
+    }
+    return true
+  }
+
+  const handleItemAttachmentUpload = (response: any, idx: number) => {
+    if (response.code === 200) {
+      const fileInfo = {
+        name: response.data.original_name || '附件',
+        url: response.data.file_url,
+        file_name: response.data.file_name
+      }
+      if (!items.value[idx].attachment_files) {
+        items.value[idx].attachment_files = []
+      }
+      items.value[idx].attachment_files!.push(fileInfo)
+      ElMessage.success('附件上传成功！')
+    } else {
+      ElMessage.error(response.message || '附件上传失败！')
+    }
+  }
+
+  const removeItemAttachment = (idx: number, fileIdx: number) => {
+    const list = items.value[idx].attachment_files
+    if (list) {
+      list.splice(fileIdx, 1)
+      ElMessage.success('附件已删除')
+    }
+  }
+
   const removeContractFile = (index: number) => {
     contractFiles.value.splice(index, 1)
     // 更新合同字段为文件名数组
@@ -977,6 +1021,11 @@ export function useStockingForm(isFinal = false, stockingId?: string | number) {
       _echo_vin: Boolean(it.vin),
       mileage: it.mileage ?? 0,
       model_snapshot: it.model_snapshot || '',
+      attachment_files: (it.attachment || []).map((f: any) => ({
+        name: f.original_name || f.name || '附件',
+        url: f.url || f.file_url || '',
+        file_name: f.file_name || f.url || ''
+      })),
       listing_price: it.listing_price?.amount ? Number(it.listing_price.amount) : undefined,
       listing_price_currency: it.listing_price?.currency || 'CNY',
       listing_price_currency_snapshot: '',
@@ -1231,7 +1280,11 @@ export function useStockingForm(isFinal = false, stockingId?: string | number) {
       ),
       retention_price: wrapMoney(it.retention_price, (it as any).retention_price_currency, '挂账'),
       car_price: wrapMoney(it.car_price, (it as any).car_price_currency, '车价'),
-      increase_price: wrapMoney(it.increase_price, (it as any).increase_price_currency, '加价')
+      increase_price: wrapMoney(it.increase_price, (it as any).increase_price_currency, '加价'),
+      attachment: (it.attachment_files || []).map((f) => ({
+        url: f.url,
+        original_name: f.name
+      }))
     }))
 
     // 从提交参数中移除 settlement_currency
@@ -1540,6 +1593,10 @@ export function useStockingForm(isFinal = false, stockingId?: string | number) {
     // 上传相关
     actionImageUplode,
     uploadHeaders,
+    itemUploadAction,
+    beforeItemAttachmentUpload,
+    handleItemAttachmentUpload,
+    removeItemAttachment,
 
     // 方法
     initializeForm,