实现报销材料合并预览与差旅概要（07-27-yang-jun-reimbursement-readiness）

client/src/api/reimbursements.ts

@@ -137,6 +137,13 @@ export type ReimbursementDetail = {
   reimbursementDate: string | null;
   totalAmount: string | null;
   description: string | null;
+  travelSummary: {
+    isTravel: boolean;
+    purpose: string | null;
+    location: string | null;
+    startDate: string | null;
+    endDate: string | null;
+  };
   payment: {
     paymentVoucherNo: string | null;
     paymentDate: string | null;
@@ -276,6 +283,17 @@ export type ReimbursementCreatePayload = {
   description?: string;
   templateId?: string;
   linkedTravelRequestId?: string;
+  travelPurpose?: string;
+  travelLocation?: string;
+  travelStartDate?: string;
+  travelEndDate?: string;
+};
+
+export type ReimbursementTravelSummaryPayload = {
+  travelPurpose: string | null;
+  travelLocation: string | null;
+  travelStartDate: string | null;
+  travelEndDate: string | null;
 };
 
 export type ReimbursementCreateResponse = {
@@ -459,6 +477,16 @@ export async function deleteReimbursement(reimbursementId: string) {
   });
 }
 
+export async function updateReimbursementTravelSummary(
+  reimbursementId: string,
+  payload: ReimbursementTravelSummaryPayload,
+) {
+  return apiRequestData<{ travelSummary: Omit<ReimbursementDetail["travelSummary"], "isTravel"> }>(
+    `/api/reimbursements/${reimbursementId}`,
+    { method: "PATCH", body: JSON.stringify(payload) },
+  );
+}
+
 export async function createReimbursementItem(
   reimbursementId: string,
   payload: ReimbursementItemPayload,
@@ -549,12 +577,11 @@ export async function fetchReimbursementAttachmentPreviewUrl(
 
 export type ReimbursementMaterialPreviewBundle = {
   expiresAt: string;
-  pages: Array<{
-    url: string;
-    materialType: "invoice" | "attachment";
-    materialIndex: number;
-    pageNumber: number;
-  }>;
+  signedUrl: string;
+  originalName: string;
+  mimeType: "application/pdf";
+  fileSize: number;
+  pageCount: number;
 };
 
 export async function fetchReimbursementMaterialPreviewBundle(