fix(test): align receiving pallets with FBA destinations

scripts/admin-test-env-modules/phase4-overseas-pda-operations-contract.test.mjs

@@ -5,7 +5,7 @@ import test from 'node:test'
 import { fileURLToPath } from 'node:url'
 
 import { normalizeModuleOrder } from '../admin-test-env-acceptance.mjs'
-import { run } from './phase4-overseas-pda-operations.mjs'
+import { auxiliaryPalletFbaWarehouseCode, run } from './phase4-overseas-pda-operations.mjs'
 
 const here = path.dirname(fileURLToPath(import.meta.url))
 const source = fs.readFileSync(path.join(here, 'phase4-overseas-pda-operations.mjs'), 'utf8')
@@ -58,6 +58,16 @@ test('P2 to P5 cover all frozen endpoints, replays and conflict boundaries witho
   assert.match(source, /traceId=/)
 })
 
+test('auxiliary pallets use the authoritative inbound FBA code and never the business destination fallback', () => {
+  assert.equal(auxiliaryPalletFbaWarehouseCode('FBA', ' ABE3 '), 'ABE3')
+  assert.equal(auxiliaryPalletFbaWarehouseCode('OVERSEAS', 'ABE3'), null)
+  assert.equal(auxiliaryPalletFbaWarehouseCode('FBA', ''), null)
+  assert.match(receivingSource,
+    /destinationType: inbound\.destinationType,[\s\S]*fbaWarehouseCode: inbound\.destinationType === 'FBA' \? inbound\.fbaWarehouseCode : null/)
+  assert.match(source, /fbaWarehouseCode,\s*\n\s*remark:/)
+  assert.doesNotMatch(source, /createEmptyPallet\([^\n]*main\.destinationWarehouseCode/)
+})
+
 test('fixture failure still disables both picker accounts and removes all transient tokens', async () => {
   const cleanups = []
   const gaps = []