feat: 完成 F17 报表导出（CSV/XLSX）\n\n- 后端新增 /api/exports/* 导出接口（含权限与审计记录）\n- CSV 采用流式生成，XLSX 使用 exceljs\n- 前端在报销/票据/审计页加入导出入口（下载 Blob）\n- 更新 P5 蓝图 v3 中 F17 状态为 DONE

server/src/app.js

@@ -28,6 +28,7 @@ const expenseTypesRoutes = require("./routes/expenseTypes");
 const configReadRoutes = require("./routes/configRead");
 const approvalRulesRoutes = require("./routes/approvalRules");
 const notificationsRoutes = require("./routes/notifications");
+const exportsRoutes = require("./routes/exports");
 const { startDelegationRevokeJob } = require("./jobs/delegationRevokeJob");
 const { startOcrJob } = require("./jobs/ocrJob");
 const { startInvoiceArchiveJob } = require("./jobs/invoiceArchiveJob");
@@ -204,6 +205,7 @@ async function buildApp() {
   await app.register(configReadRoutes, { prefix: "/api" });
   await app.register(approvalRulesRoutes, { prefix: "/api" });
   await app.register(notificationsRoutes, { prefix: "/api" });
+  await app.register(exportsRoutes, { prefix: "/api" });
 
   startDelegationRevokeJob(app);
   startOcrJob(app);