优化

tests/return-packing-api.test.mjs

@@ -11,6 +11,11 @@ test('packing preview keeps customer scope internal and exposes stable order ref
 	assert.equal(value.skus[0].availableQuantity, 8)
 })
 
+test('legacy single-customer preview is normalized to all customer orders', () => {
+	const value = normalizePackingPreview({ customerId: '100', orders: [{ returnNo: 'RT-1' }, { returnNo: 'RT-2' }], skus: [{ skuCode: 'SKU-1', availableQuantity: 8 }] })
+	assert.deepEqual(value.customers[0].orders.map((item) => item.returnNo), ['RT-1', 'RT-2'])
+})
+
 test('return packing API uses exact PDA inventory routes without submitting customer or warehouse scope', async () => {
 	const calls = []
 	session.apiBase = '/api'; session.token = 'packing-token'