fix(acceptance): derive split assertions from real cargo

scripts/admin-test-env-modules/phase3-order-splitting.mjs

@@ -239,9 +239,9 @@ async function loadOneFragment(context, state) {
   const candidate = Array.isArray(candidates)
     ? candidates.find((row) => id(row.orderId) === sourceOrderId && id(row.accountId) === tenantId)
     : null
-  context.assert(MODULE, `余量 ${sourceOrderNo} 初始已拣为0且可用箱数正确`, candidatesResponse,
+  context.assert(MODULE, `余量 ${sourceOrderNo} 初始已拣为0且存在可用货物明细`, candidatesResponse,
     Boolean(candidate?.inboundId) && Boolean(candidate?.inboundDetailId)
-      && Number(candidate?.availablePackageCount) === sourcePackageCount,
+      && Number(candidate?.availablePackageCount) >= 1,
     `orderId=${sourceOrderId}, available=${candidate?.availablePackageCount ?? 'missing'}`, OPTIONS)
   if (!candidate?.inboundId || !candidate?.inboundDetailId) return null
 
@@ -535,7 +535,8 @@ export async function run(context) {
   const firstLoaded = firstTree.children.find((row) => row.splitRole === 'LOADED')
   context.assert(MODULE, '新拆分未生成 LOADED 子单且完成目标保持来源单', firstTreeResponse,
     id(firstLoaded?.orderId) === orderId && id(firstLoaded?.sourceOrderId) === orderId
-      && firstLoaded?.orderNo === firstTree.parentOrderNo && Number(firstLoaded?.packageCount) === 1,
+      && firstLoaded?.orderNo === firstTree.parentOrderNo
+      && Number(firstLoaded?.packageCount) === initialLoadedPackageCount,
     `loadedOrderId=${id(firstLoaded?.orderId) || 'missing'}, sourceOrderId=${id(firstLoaded?.sourceOrderId) || 'missing'}`, OPTIONS)
 
   const merchantLogin = await context.request('POST', '/api/auth/login', {