LP6 完善请假采购体验与审批说明

client/src/pages/WorkflowTaskDetailPage.tsx

@@ -23,6 +23,7 @@ import { PageScaffold } from "../components/patterns/PageScaffold";
 import { SectionPanel } from "../components/patterns/SectionPanel";
 import { Button } from "../components/ui/button";
 import { Textarea } from "../components/ui/textarea";
+import { resolvePurchaseDisplayCode } from "../lib/approvalDisplay";
 
 function entityTitle(entityType: string | undefined) {
   if (entityType === "leave") {
@@ -302,7 +303,7 @@ export function WorkflowTaskDetailPage() {
                 ) : null}
                 {detail.purchaseRequest ? (
                   <>
-                    <div>采购单号：{detail.purchaseRequest.requestNo ?? detail.purchaseRequest.id}</div>
+                    <div>采购单号：{resolvePurchaseDisplayCode(detail.purchaseRequest)}</div>
                     <div>标题：{detail.purchaseRequest.title || "-"}</div>
                     <div>申请人：{detail.purchaseRequest.applicant?.name ?? "-"}</div>
                     <div>供应商：{detail.purchaseRequest.supplier?.name ?? "-"}</div>