fix(firstleg): atomically finalize PDA completion

scripts/admin-test-env-modules/phase3-phase4-producer-fixture-contract.test.mjs

@@ -10,10 +10,11 @@ import { collectPhase4InboundProducerFixture } from './phase3-loading-finalize.m
 const here = dirname(fileURLToPath(import.meta.url))
 const read = (name) => readFileSync(resolve(here, name), 'utf8')
 
-test('order fixture defaults to FBA and accepts only the explicit OVERSEAS variant', () => {
+test('order fixture defaults to FBA and preserves explicit OVERSEAS or PRIVATE routes', () => {
   assert.equal(requestedOrderDestinationType({ context: {} }), 'FBA')
   assert.equal(requestedOrderDestinationType({ context: { orderDestinationType: 'overseas' } }), 'OVERSEAS')
-  assert.equal(requestedOrderDestinationType({ context: { orderDestinationType: 'PRIVATE' } }), 'FBA')
+  assert.equal(requestedOrderDestinationType({ context: { orderDestinationType: 'PRIVATE' } }), 'PRIVATE')
+  assert.equal(requestedOrderDestinationType({ context: { orderDestinationType: 'invalid' } }), 'FBA')
   const orders = read('orders.mjs')
   assert.match(orders, /warehouseType=\$\{encodeURIComponent\(destinationType\)\}/)
   assert.match(orders, /destinationType: master\.destinationType/)
@@ -88,7 +89,8 @@ test('measurement and loading pass destination identity into the LOADED producer
   assert.match(entry, /skuLines: Array\.isArray\(fixtureOrder\.skuLines\) \? fixtureOrder\.skuLines : \[\]/)
   const pda = read('phase4-overseas-pda.mjs')
   assert.match(pda, /find\(\(item\) => item\?\.fulfillmentType === 'ONE_CLICK_DROPSHIP'\)/)
-  assert.match(pda, /skuFixtures\(context, producer\)/)
+  assert.match(pda, /resolveCartonFixtures\(context, token, current\.data\.inbounds, producerCartonMarks\)/)
+  assert.match(pda, /FBA与OVERSEAS箱码resolve均为纯查询且零状态写入/)
 })
 
 test('only PDA-operated variants traverse real outbound and carrier nodes before overseas receiving', () => {