fix(test): resolve loading customer credentials per run

scripts/admin-test-env-modules/phase3-loading.mjs

@@ -7,12 +7,19 @@ import { createHash } from 'node:crypto'
 
 const MODULE = 'phase3-loading'
 const OPTIONS = { scenario: 'phase3-split-preload-loading', deploymentBlocker: true }
-const MERCHANT_USERNAME = process.env.MERCHANT_TEST_USERNAME || ''
-const MERCHANT_PASSWORD = process.env.MERCHANT_TEST_PASSWORD || ''
 const MATSON_SUPPLIER_NAME = 'MATSON 开发联调船司'
 const LATE_CONTAINER_GATE_ONLY = process.env.LATE_CONTAINER_GATE_ONLY === '1'
 
 function id(value) { return value == null ? '' : String(value) }
+export function loadingMerchantCredentials(context, environment = process.env) {
+  const fixture = context.context?.merchantQualificationFixture
+  const options = context.options || {}
+  const selected = fixture || (options.merchantUsername || options.merchantPassword
+    ? { username: options.merchantUsername, password: options.merchantPassword }
+    : { username: environment.MERCHANT_TEST_USERNAME, password: environment.MERCHANT_TEST_PASSWORD })
+  if (!selected.username || !selected.password) throw new Error('装柜验收当前运行缺少完整客户登录凭据')
+  return { username: selected.username, password: selected.password }
+}
 export function loadingBookingCustomerFields(scope = 'CUSTOMER', customerId, customerName) {
   if (scope === 'PLATFORM') return {}
   if (scope !== 'CUSTOMER') throw new Error('三期订舱范围必须明确为 CUSTOMER 或 PLATFORM')
@@ -184,6 +191,7 @@ function taskItemsSignature(task) {
 }
 
 export async function run(context) {
+  const merchantCredentials = loadingMerchantCredentials(context)
   const source = fixture(context)
   const tenantId = id(source?.tenantId)
   const inboundId = id(source?.inboundId)
@@ -940,12 +948,12 @@ export async function run(context) {
   }
 
   const merchantLogin = await context.request('POST', '/api/auth/login', {
-    loginId: MERCHANT_USERNAME, password: MERCHANT_PASSWORD,
+    loginId: merchantCredentials.username, password: merchantCredentials.password,
   }, '')
   const merchantToken = merchantLogin.http === 200 && codeOf(merchantLogin) === '200'
     ? merchantLogin.body?.data?.accessToken : null
   context.addStep(MODULE, '取得客户侧隔离令牌用于 PDA 批次越权验证', merchantLogin,
-    Boolean(merchantToken), `username=${MERCHANT_USERNAME}`, OPTIONS)
+    Boolean(merchantToken), 'current-run customer credentials', OPTIONS)
   const customerIsolatedBatch = merchantToken
     ? await request(context, 'POST', batchPath, batchPayload, {
       Authorization: `Bearer ${merchantToken}`,