feat: add platform audit export

apps/taro/src/services/platformAdmin.ts

@@ -223,6 +223,18 @@ export interface PlatformAuditLogItem {
   createdAt?: string | null;
 }
 
+export interface PlatformAuditExportItem {
+  filename?: string | null;
+  format?: string | null;
+  mimeType?: string | null;
+  rowCount?: number | string | null;
+  exportedAt?: string | null;
+  sha256?: string | null;
+  sizeBytes?: number | string | null;
+  contentBase64?: string | null;
+  filters?: Record<string, unknown> | null;
+}
+
 export interface CreatePlatformTenantInput {
   slug: string;
   name: string;
@@ -342,6 +354,23 @@ export async function loadPlatformAuditLogs(query: { tenantId?: string; action?:
   });
 }
 
+export async function exportPlatformAuditLogs(query: {
+  tenantId?: string;
+  action?: string;
+  targetType?: string;
+  actorUserId?: string;
+  q?: string;
+  startDate?: string;
+  endDate?: string;
+  format?: 'csv' | 'json';
+  limit?: number;
+} = {}) {
+  return apiRequest<{ item?: PlatformAuditExportItem }>('/api/platform-admin/audit-logs/export', {
+    query: { format: 'csv', ...query, limit: query.limit || 1000 },
+    tenantId: null,
+  });
+}
+
 export async function loadPlatformInvoices(query: { tenantId?: string; status?: string; limit?: number } = {}) {
   return apiRequest<{ items?: PlatformInvoiceItem[] }>('/api/platform-admin/invoices', {
     query: { ...query, limit: query.limit || 80 },