fix: treat missing return records as empty results

src/api/return-packing.js

@@ -4,6 +4,11 @@ const BASE = '/pda/v1/last-leg/return-inventory'
 const encoded = (value) => encodeURIComponent(String(value || '').trim())
 const count = (value) => Number.isFinite(Number(value)) ? Math.max(0, Number(value)) : 0
 
+function isNotFound(error) {
+	const code = String(error?.code || '').toUpperCase()
+	return code === 'A0404' || code === '404'
+}
+
 function normalizeItems(items) {
 	return Array.isArray(items) ? items.map((item) => ({
 		skuCode: String(item.skuCode || ''), productNameZh: String(item.productNameZh || ''),
@@ -34,7 +39,12 @@ export function normalizeReturnLabel(value = {}) {
 
 export async function findPackingOrders(returnNo = '') {
 	const query = String(returnNo || '').trim()
-	return normalizePackingPreview(await overseasRequest('GET', `${BASE}/packing/orders${query ? `?returnNo=${encoded(query)}` : ''}`))
+	try {
+		return normalizePackingPreview(await overseasRequest('GET', `${BASE}/packing/orders${query ? `?returnNo=${encoded(query)}` : ''}`))
+	} catch (error) {
+		if (isNotFound(error)) return normalizePackingPreview()
+		throw error
+	}
 }
 
 export async function mergeReturnCartons(request) {