fix(orders): retain nullable palletizing facts in customer summaries

src/modules/cross-border/api/businessOrders.ts

@@ -79,7 +79,7 @@ export interface TransportSummary {
   orderNo: string
   transportType: string
   transportMode?: string
-  palletRequired?: string
+  palletRequired?: string | null
   origin: string
   destination: string
   containerType: string | null

src/modules/cross-border/businessOrders.test.mjs

@@ -1,11 +1,29 @@
 import assert from 'node:assert/strict'
 import { readFileSync } from 'node:fs'
 import test from 'node:test'
+import { runInNewContext } from 'node:vm'
+import ts from 'typescript'
 
 const api = readFileSync(new URL('./api/businessOrders.ts', import.meta.url), 'utf8')
 const routes = readFileSync(new URL('./routes.ts', import.meta.url), 'utf8')
 const view = readFileSync(new URL('./components/BusinessOrdersView.vue', import.meta.url), 'utf8')
 
+test('renders unknown pallet service and container type as dashes while preserving explicit values', () => {
+  const helpers = view.slice(view.indexOf('function read('), view.indexOf('function idempotencyKey('))
+  const compiled = ts.transpileModule(helpers, { compilerOptions: { target: ts.ScriptTarget.ES2022 } }).outputText
+  const { displayCell, yesNo, text } = runInNewContext(`${compiled}\n({ displayCell, yesNo, text })`)
+  assert.equal(displayCell({ palletRequired: null }, 'palletRequired'), '—')
+  assert.equal(displayCell({ palletRequired: 'NO' }, 'palletRequired'), '否')
+  assert.equal(displayCell({ palletRequired: 'YES' }, 'palletRequired'), '是')
+  assert.equal(displayCell({ containerType: null }, 'containerType'), '—')
+  assert.equal(displayCell({ containerType: '40HQ' }, 'containerType'), '40HQ')
+  assert.equal(yesNo(null), '—')
+  assert.equal(text(null), '—')
+  assert.match(api, /palletRequired\?: string \| null/)
+  const create = api.slice(api.indexOf('export interface TransportCreate'), api.indexOf('export interface TransportUpdate'))
+  assert.doesNotMatch(create, /palletRequired\?: string \| null/)
+})
+
 test('shows merchant-owned arrangement facts without a pool request or editable status control', () => {
   assert.match(api, /fleetArrangement: import\('\.\.\/fleetArrangement'\)\.FleetArrangement \| null/)
   assert.match(view, /aria-label="承运安排"/)