R53 A1-A6：ERP 集成运维可视化与业务同步状态接入

- ErpIntegrationPage Tab 化：主数据同步 / Outbox 队列管理 / ID 映射查看器
- Outbox 分页查询、详情、重试与统计端点
- IntegrationBinding 分页查询、routePath 推导与采购/资产深链
- 报销/采购/资产详情区接入 ERP 同步状态卡片
- 单测覆盖 Outbox 与 Binding 端点

client/src/api/integrations.ts

@@ -66,6 +66,99 @@ export type ReimbursementJournalPreview = {
   };
 };
 
+export type IntegrationOutboxStatus =
+  | "pending"
+  | "processing"
+  | "succeeded"
+  | "failed"
+  | "dead_letter";
+
+export type IntegrationOutboxPayloadSummary = {
+  entityType: string | null;
+  entityId: string | null;
+  sourceEventName: string | null;
+  journalType: string | null;
+  exportType: string | null;
+  identityCode: string | null;
+};
+
+export type IntegrationOutboxItem = {
+  id: string;
+  eventType: string;
+  status: IntegrationOutboxStatus | string;
+  payloadSummary: IntegrationOutboxPayloadSummary;
+  attempts: number;
+  maxAttempts: number;
+  nextRetryAt: string | null;
+  createdAt: string | null;
+  processedAt: string | null;
+  deadLetterAt: string | null;
+};
+
+export type IntegrationOutboxDetail = IntegrationOutboxItem & {
+  payload: Record<string, unknown> | null;
+  lastError: string | null;
+};
+
+export type IntegrationOutboxListResponse = {
+  page: number;
+  pageSize: number;
+  total: number;
+  items: IntegrationOutboxItem[];
+};
+
+export type IntegrationOutboxStats = {
+  pending: number;
+  processing: number;
+  succeeded: number;
+  failed: number;
+  deadLetter: number;
+};
+
+export type IntegrationOutboxQuery = {
+  page?: number;
+  pageSize?: number;
+  status?: IntegrationOutboxStatus;
+  eventType?: string;
+};
+
+export type IntegrationBindingItem = {
+  id: string;
+  provider: string;
+  entityType: string;
+  localId: string;
+  externalId: string | null;
+  externalCode: string | null;
+  lastSyncedAt: string | null;
+  routePath: string | null;
+};
+
+export type IntegrationBindingListResponse = {
+  page: number;
+  pageSize: number;
+  total: number;
+  items: IntegrationBindingItem[];
+};
+
+export type IntegrationBindingQuery = {
+  page?: number;
+  pageSize?: number;
+  provider?: string;
+  entityType?: string;
+};
+
+function toQueryString(query: Record<string, string | number | boolean | undefined>) {
+  const params = new URLSearchParams();
+  for (const [key, value] of Object.entries(query)) {
+    if (value == null || value === "") {
+      continue;
+    }
+    params.set(key, typeof value === "boolean" ? (value ? "1" : "0") : String(value));
+  }
+  const encoded = params.toString();
+  return encoded ? `?${encoded}` : "";
+}
+
 export async function triggerErpSync(reimbursementId: string, runNow = true) {
   return apiRequestData<{
     outboxId: string;
@@ -107,6 +200,45 @@ export async function exportReimbursementJournal(reimbursementId: string, runNow
   });
 }
 
+export async function fetchIntegrationOutbox(query: IntegrationOutboxQuery = {}) {
+  return apiRequestData<IntegrationOutboxListResponse>(
+    `/api/integrations/outbox${toQueryString({
+      page: query.page,
+      pageSize: query.pageSize,
+      status: query.status,
+      event_type: query.eventType,
+    })}`,
+  );
+}
+
+export async function fetchIntegrationOutboxDetail(outboxId: string) {
+  const response = await apiRequestData<{ item: IntegrationOutboxDetail }>(`/api/integrations/outbox/${outboxId}`);
+  return response.item;
+}
+
+export async function retryIntegrationOutbox(outboxId: string) {
+  const response = await apiRequestData<{ item: IntegrationOutboxDetail }>(`/api/integrations/outbox/${outboxId}/retry`, {
+    method: "POST",
+    body: JSON.stringify({}),
+  });
+  return response.item;
+}
+
+export async function fetchIntegrationOutboxStats() {
+  return apiRequestData<IntegrationOutboxStats>("/api/integrations/outbox/stats");
+}
+
+export async function fetchIntegrationBindings(query: IntegrationBindingQuery = {}) {
+  return apiRequestData<IntegrationBindingListResponse>(
+    `/api/integrations/bindings${toQueryString({
+      page: query.page,
+      pageSize: query.pageSize,
+      provider: query.provider,
+      entity_type: query.entityType,
+    })}`,
+  );
+}
+
 export async function importTravelOrders(payload: {
   orders: Array<{
     source: string;