收口报销详情返回与金额展示（07-27-yang-jun-reimbursement-readiness）

client/src/pages/WorkflowTaskDetailPage.tsx

@@ -1,6 +1,6 @@
 import type { ReactNode } from "react";
 import { useMemo, useState } from "react";
-import { Link, Navigate, useNavigate, useParams } from "react-router-dom";
+import { Link, Navigate, useLocation, useNavigate, useParams } from "react-router-dom";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { isApiError } from "../api/types";
 import { mapApiErrorMessage } from "../api/errorMessages";
@@ -34,6 +34,11 @@ import { Button } from "../components/ui/button";
 import { Textarea } from "../components/ui/textarea";
 import { resolvePurchaseDisplayCode } from "../lib/approvalDisplay";
 import { formatDisplayDateTime } from "../lib/displayFormat";
+import {
+  buildPcDetailSource,
+  resolvePcDetailSource,
+  type PcDetailNavigationState,
+} from "../lib/pcDetailNavigation";
 import { getWorkflowConfirmCopy, type WorkflowConfirmAction } from "../lib/workflowActionConfirm";
 
 function entityTitle(entityType: string | undefined) {
@@ -118,6 +123,7 @@ type SecondaryWorkflowAction = "reject" | "return" | "transfer";
 
 export function WorkflowTaskDetailPage() {
   const { taskId = "" } = useParams();
+  const location = useLocation();
   const navigate = useNavigate();
   const queryClient = useQueryClient();
   const { permissions } = useAuth();
@@ -130,6 +136,9 @@ export function WorkflowTaskDetailPage() {
   const [activeSecondaryAction, setActiveSecondaryAction] = useState<SecondaryWorkflowAction | null>(null);
   const [confirmAction, setConfirmAction] = useState<WorkflowConfirmAction | null>(null);
   const [transferConfirmOpen, setTransferConfirmOpen] = useState(false);
+  const currentTaskSource = buildPcDetailSource(location.pathname, location.search);
+  const navigationState = location.state as PcDetailNavigationState | null;
+  const backSource = resolvePcDetailSource(navigationState?.from, currentTaskSource) ?? "/workflow/tasks";
 
   const detailQuery = useQuery({
     enabled: Boolean(taskId),
@@ -263,10 +272,10 @@ export function WorkflowTaskDetailPage() {
         <p className="text-sm text-red-600">{message}</p>
         <Button
           variant="secondary"
-          onClick={() => navigate("/workflow/tasks")}
+          onClick={() => navigate(backSource, { replace: true })}
           type="button"
         >
-          返回待办列表
+          {backSource.startsWith("/reimbursements") ? "返回报销列表" : "返回待办列表"}
         </Button>
       </div>
     );
@@ -292,7 +301,9 @@ export function WorkflowTaskDetailPage() {
         )}
         actions={(
           <Button asChild variant="secondary" data-testid="workflow-task-back">
-            <Link to="/workflow/tasks">返回待办列表</Link>
+            <Link replace to={backSource}>
+              {backSource.startsWith("/reimbursements") ? "返回报销列表" : "返回待办列表"}
+            </Link>
           </Button>
         )}
       />
@@ -397,6 +408,7 @@ export function WorkflowTaskDetailPage() {
                 <Button asChild variant="secondary">
                   <Link
                     data-testid="workflow-task-reimbursement-detail-link"
+                    state={{ from: currentTaskSource }}
                     to={`/reimbursements/${encodeURIComponent(detail.reimbursement.id)}`}
                   >
                     查看报销单