feat(P17A-3,P17A-4): 实现采购申请接口附件与前端入口

client/src/pages/WorkflowTaskDetailPage.tsx

@@ -27,6 +27,9 @@ function entityTitle(entityType: string | undefined) {
   if (entityType === "reimbursement") {
     return "报销单";
   }
+  if (entityType === "purchase_request") {
+    return "采购申请";
+  }
   return entityType || "业务单据";
 }
 
@@ -142,7 +145,7 @@ export function WorkflowTaskDetailPage() {
 
   const detail = detailQuery.data;
   const isLeaveTask = detail.workflowInstance?.entityType === "leave";
-  const canTransfer = allowedActions.has("transfer");
+  const canTransfer = allowedActions.has("transfer") && detail.workflowInstance?.entityType === "reimbursement";
 
   return (
     <div className="space-y-6">
@@ -183,6 +186,19 @@ export function WorkflowTaskDetailPage() {
             <div>附件：{detail.leaveRequest.attachment?.originalName ?? "-"}</div>
           </>
         ) : null}
+        {detail.purchaseRequest ? (
+          <>
+            <div>采购单号：{detail.purchaseRequest.requestNo ?? detail.purchaseRequest.id}</div>
+            <div>申请人：{detail.purchaseRequest.applicant?.name ?? "-"}</div>
+            <div>供应商：{detail.purchaseRequest.supplier?.name ?? "-"}</div>
+            <div>法体：{detail.purchaseRequest.legalEntity?.name ?? "-"}</div>
+            <div>成本中心：{detail.purchaseRequest.costCenter?.name ?? "-"}</div>
+            <div>单据分类：{detail.purchaseRequest.documentCategory?.name ?? "-"}</div>
+            <div>金额：{detail.purchaseRequest.totalAmount ?? "-"} {detail.purchaseRequest.currencyCode}</div>
+            <div>预计到货：{detail.purchaseRequest.expectedDeliveryDate ?? "-"}</div>
+            <div>说明：{detail.purchaseRequest.reason ?? "-"}</div>
+          </>
+        ) : null}
       </div>
 
       <div className="card-std space-y-4 p-6">