feat(pda): support five loading photos per category and reconcile saves

src/api/dispatch-loading-documents.js

@@ -1,6 +1,9 @@
 import { overseasRequest, overseasUpload, overseasDownload } from './overseas.js'
 
 export const loadingPhotoSlots = ['LOADING_SCENE', 'LOADING_LIST', 'PRE_DEPARTURE_CHECK', 'DRIVER_LICENSE', 'RECEIPT']
+// 保留既有五框标识以维持文件归属，界面按当前装车资料分类展示。
+export const loadingPhotoLabels = { LOADING_SCENE: '司机驾驶证', LOADING_LIST: '车牌照片', PRE_DEPARTURE_CHECK: '装车完成', DRIVER_LICENSE: '封车照片', RECEIPT: 'BOL司机签字' }
+export const loadingPhotoLimit = 5
 const path = no => {
   if (!no || typeof no !== 'string') throw new Error('请先打开排车任务')
   return `/pda/v1/last-leg/dispatches/${encodeURIComponent(no)}/loading-documents`
@@ -12,10 +15,11 @@ function slotPath(no, slot) {
 export function normalizeLoadingDocuments(value, no) {
   if (value?.dispatchNo !== no || !/^\d+$/.test(String(value.recordVersion ?? '')) || !Array.isArray(value.photos)
     || !['LOADING', 'AFTER_LOADING', 'DELIVERING', 'DELIVERED'].includes(value.stage)) throw new Error('装车资料与当前排车事实不一致')
-  const slots = new Set()
+  const files = new Set(), counts = {}
   for (const photo of value.photos) {
-    if (!loadingPhotoSlots.includes(photo.slot) || !photo.fileId || slots.has(photo.slot)) throw new Error('装车照片引用不完整或重复')
-    slots.add(photo.slot)
+    if (!loadingPhotoSlots.includes(photo.slot) || !photo.fileId || files.has(String(photo.fileId))) throw new Error('装车照片引用不完整或重复')
+    files.add(String(photo.fileId)); counts[photo.slot] = (counts[photo.slot] || 0) + 1
+    if (counts[photo.slot] > loadingPhotoLimit) throw new Error('每类装车照片最多5张')
   }
   return { ...value, editable: value.editable === true, complete: value.complete === true }
 }