feat(P20T1-4): 差旅前端入口与审批移动端联动

client/src/api/masterData.ts

@@ -4,6 +4,7 @@ export type DocumentCategoryEntityType =
   | "reimbursement"
   | "leave"
   | "purchase_request"
+  | "travel_request"
   | "asset_card"
   | "general";
 

client/src/api/notificationChannels.ts

@@ -7,6 +7,7 @@ export type NotificationDomainScope =
   | "reimbursement"
   | "leave"
   | "procurement"
+  | "travel"
   | "asset"
   | "inventory";
 

client/src/api/travelRequests.ts

@@ -0,0 +1,218 @@
+import { apiRequestData } from "./http";
+
+export type TravelRequestStatus = "draft" | "reviewing" | "approved" | "rejected";
+export type TravelTripType = "domestic" | "international";
+export type TravelSegmentRole = "outbound" | "return" | "connection";
+export type TravelTransportType = "flight" | "train" | "car" | "bus" | "other";
+
+export type TravelRequestSummary = {
+  id: string;
+  requestNo: string | null;
+  applicantEmployeeId: string;
+  submitterId: string | null;
+  departmentId: string;
+  legalEntityId: string;
+  costCenterId: string;
+  budgetPoolId: string | null;
+  purpose: string;
+  tripType: TravelTripType;
+  startDate: string | null;
+  endDate: string | null;
+  estimatedAmount: string;
+  status: TravelRequestStatus;
+  createdAt: string | null;
+  updatedAt: string | null;
+  applicant: {
+    id: string;
+    employeeNo: string;
+    name: string;
+  } | null;
+  submitter: {
+    id: string;
+    employeeNo: string;
+    name: string;
+  } | null;
+  department: {
+    id: string;
+    name: string;
+  } | null;
+  legalEntity: {
+    id: string;
+    code: string;
+    name: string;
+  } | null;
+  costCenter: {
+    id: string;
+    code: string;
+    name: string;
+    legalEntityId: string;
+  } | null;
+  budgetPool: {
+    id: string;
+    code: string;
+    name: string;
+  } | null;
+};
+
+export type TravelRequestSegment = {
+  id: string;
+  sortOrder: number;
+  segmentRole: TravelSegmentRole;
+  transportType: TravelTransportType;
+  fromCity: string;
+  toCity: string;
+  departAt: string | null;
+  arriveAt: string | null;
+  createdAt: string | null;
+  updatedAt: string | null;
+};
+
+export type TravelOrderLink = {
+  id: string;
+  source: string;
+  externalOrderNo: string;
+  employeeId: string;
+  linkedReimbursementId: string | null;
+  occurredAt: string | null;
+  amount: string | null;
+  currency: string;
+  status: string;
+  createdAt: string | null;
+  updatedAt: string | null;
+};
+
+export type TravelRequestDetail = TravelRequestSummary & {
+  segments: TravelRequestSegment[];
+  travelOrders: TravelOrderLink[];
+  pendingWorkflow: {
+    instanceId: string;
+    currentStatus: string;
+    currentStepId: string;
+    task: {
+      id: string;
+      stepId: string;
+      stepName: string;
+      assigneeId: string | null;
+      assigneeRole: string | null;
+    } | null;
+  } | null;
+  permissions: {
+    canEditDraft: boolean;
+    canSubmit: boolean;
+    canWithdraw: boolean;
+    canManage: boolean;
+  };
+};
+
+export type TravelRequestListResponse = {
+  page: number;
+  pageSize: number;
+  total: number;
+  mine: boolean;
+  items: TravelRequestSummary[];
+};
+
+export type TravelRequestListQuery = {
+  status?: TravelRequestStatus;
+  mine?: boolean;
+  tripType?: TravelTripType;
+  legalEntityId?: string;
+  costCenterId?: string;
+  page?: number;
+  pageSize?: number;
+};
+
+export type TravelRequestSegmentPayload = {
+  segmentRole: TravelSegmentRole;
+  transportType: TravelTransportType;
+  fromCity: string;
+  toCity: string;
+  departAt: string;
+  arriveAt: string;
+};
+
+export type TravelRequestPayload = {
+  purpose: string;
+  tripType: TravelTripType;
+  startDate: string;
+  endDate: string;
+  legalEntityId: string;
+  costCenterId: string;
+  estimatedAmount: string;
+  segments: TravelRequestSegmentPayload[];
+};
+
+export type TravelRequestSubmitResponse = {
+  travelRequestId: string;
+  requestNo: string;
+  status: "reviewing";
+  workflowInstanceId: string;
+  currentTaskId: string;
+  budgetPoolId: string | null;
+  budgetReservation: {
+    applied: boolean;
+    reservedAmount?: string;
+    items?: Array<{ budgetPoolId: string; amount: string }>;
+  };
+};
+
+export type TravelRequestWithdrawResponse = {
+  travelRequestId: string;
+  status: "draft";
+  outcome: "withdrawn";
+  workflowInstanceId: string | null;
+  budgetRelease: {
+    applied: boolean;
+    items?: Array<{ budgetPoolId: string; amount: 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 ? `?${encoded}` : "";
+}
+
+export async function fetchTravelRequests(query: TravelRequestListQuery = {}) {
+  return apiRequestData<TravelRequestListResponse>(
+    `/api/travel-requests${toQueryString(query as Record<string, string | number | boolean | undefined>)}`,
+  );
+}
+
+export async function createTravelRequest(payload: TravelRequestPayload) {
+  return apiRequestData<TravelRequestDetail>("/api/travel-requests", {
+    method: "POST",
+    body: JSON.stringify(payload),
+  });
+}
+
+export async function fetchTravelRequestDetail(travelRequestId: string) {
+  return apiRequestData<TravelRequestDetail>(`/api/travel-requests/${travelRequestId}`);
+}
+
+export async function updateTravelRequest(travelRequestId: string, payload: Partial<TravelRequestPayload>) {
+  return apiRequestData<TravelRequestDetail>(`/api/travel-requests/${travelRequestId}`, {
+    method: "PATCH",
+    body: JSON.stringify(payload),
+  });
+}
+
+export async function submitTravelRequest(travelRequestId: string) {
+  return apiRequestData<TravelRequestSubmitResponse>(`/api/travel-requests/${travelRequestId}/submit`, {
+    method: "POST",
+    body: JSON.stringify({}),
+  });
+}
+
+export async function withdrawTravelRequest(travelRequestId: string) {
+  return apiRequestData<TravelRequestWithdrawResponse>(`/api/travel-requests/${travelRequestId}/withdraw`, {
+    method: "POST",
+    body: JSON.stringify({}),
+  });
+}

client/src/api/workflow.ts

@@ -136,6 +136,39 @@ export type WorkflowTaskDetail = {
       name: string;
     } | null;
   } | null;
+  travelRequest: {
+    id: string;
+    requestNo: string | null;
+    status: string;
+    purpose: string;
+    tripType: string;
+    startDate: string | null;
+    endDate: string | null;
+    estimatedAmount: string | null;
+    applicant: {
+      id: string;
+      employeeNo: string;
+      name: string;
+    } | null;
+    legalEntity: {
+      id: string;
+      code: string;
+      name: string;
+    } | null;
+    costCenter: {
+      id: string;
+      code: string;
+      name: string;
+    } | null;
+    segments: Array<{
+      id: string;
+      sortOrder: number;
+      segmentRole: string;
+      transportType: string;
+      fromCity: string;
+      toCity: string;
+    }>;
+  } | null;
   allowedActions: Array<"approve" | "reject" | "return" | "transfer">;
   history: WorkflowHistoryItem[];
 };

client/src/auth/permissions.ts

@@ -22,6 +22,12 @@ const PROCUREMENT_SELF_SERVICE_PERMISSIONS = [
   "procurement.submit",
 ] as const;
 
+const TRAVEL_SELF_SERVICE_PERMISSIONS = [
+  "travel.create",
+  "travel.view_own",
+  "travel.submit",
+] as const;
+
 const ASSET_SELF_SERVICE_PERMISSIONS = ["asset.view_own"] as const;
 
 const MASTERDATA_VIEW_PERMISSIONS = ["masterdata.view"] as const;
@@ -30,6 +36,7 @@ const MASTERDATA_MANAGE_PERMISSIONS = ["masterdata.manage"] as const;
 const EMPLOYEE_BASE_PERMISSIONS = [
   ...EXPENSE_SELF_SERVICE_PERMISSIONS,
   ...LEAVE_SELF_SERVICE_PERMISSIONS,
+  ...TRAVEL_SELF_SERVICE_PERMISSIONS,
 ] as const;
 
 const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
@@ -47,6 +54,8 @@ const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
     "leave.approve",
     "procurement.approve",
     "procurement.view_all",
+    "travel.approve",
+    "travel.view_all",
     "asset.view_all",
     "report.dashboard.view",
     "budget.view",
@@ -63,6 +72,8 @@ const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
     "leave.view_all",
     "procurement.approve",
     "procurement.view_all",
+    "travel.approve",
+    "travel.view_all",
     "asset.view_all",
     "report.dashboard.view",
     "budget.view",
@@ -78,6 +89,7 @@ const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
     "expense.finance.pay",
     "expense.view_all",
     "procurement.view_all",
+    "travel.view_all",
     "asset.view_all",
   ],
   finance_mgr: [
@@ -97,6 +109,8 @@ const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
     "expense.finance.override_duplicate",
     "procurement.view_all",
     "procurement.manage",
+    "travel.view_all",
+    "travel.manage",
     "asset.view_all",
     "asset.manage",
     "asset.inventory",
@@ -108,6 +122,8 @@ const ROLE_PERMISSIONS: Record<string, readonly string[]> = {
     ...EMPLOYEE_BASE_PERMISSIONS,
     "procurement.view_all",
     "procurement.manage",
+    "travel.view_all",
+    "travel.manage",
     "asset.view_all",
     "asset.manage",
     "asset.transfer",

client/src/components/navigation/NavLinks.tsx

@@ -30,11 +30,17 @@ export const NAV_ITEMS: NavItem[] = [
     icon: "shopping_cart",
     anyOf: ["procurement.create", "procurement.view_own", "procurement.view_all", "procurement.manage"],
   },
+  {
+    to: "/travel-requests",
+    label: "差旅申请",
+    icon: "flight",
+    anyOf: ["travel.create", "travel.view_own", "travel.view_all", "travel.manage"],
+  },
   {
     to: "/workflow/tasks",
     label: "待我处理",
     icon: "fact_check",
-    anyOf: ["expense.approve", "leave.approve", "procurement.approve"],
+    anyOf: ["expense.approve", "leave.approve", "procurement.approve", "travel.approve"],
   },
   {
     to: "/assets",
@@ -64,7 +70,7 @@ export const NAV_ITEMS: NavItem[] = [
     to: "/mobile/approvals",
     label: "移动审批",
     icon: "mobile_friendly",
-    anyOf: ["expense.approve", "leave.approve", "procurement.approve"],
+    anyOf: ["expense.approve", "leave.approve", "procurement.approve", "travel.approve"],
   },
   {
     to: "/budgets",

client/src/pages/MobileApprovalsPage.tsx

@@ -29,6 +29,9 @@ function entityLabel(entityType: string | undefined) {
   if (entityType === "purchase_request") {
     return "采购";
   }
+  if (entityType === "travel_request") {
+    return "差旅";
+  }
   return entityType || "未知";
 }
 
@@ -189,6 +192,14 @@ export function MobileApprovalsPage() {
                   <div>金额：{selectedTask.purchaseRequest.totalAmount ?? "-"}</div>
                 </>
               ) : null}
+              {selectedTask.travelRequest ? (
+                <>
+                  <div>差旅单号：{selectedTask.travelRequest.requestNo ?? selectedTask.travelRequest.id}</div>
+                  <div>申请人：{selectedTask.travelRequest.applicant?.name ?? "-"}</div>
+                  <div>出差类型：{selectedTask.travelRequest.tripType === "international" ? "国际" : "国内"}</div>
+                  <div>预估金额：{selectedTask.travelRequest.estimatedAmount ?? "-"}</div>
+                </>
+              ) : null}
             </div>
 
             <Textarea

client/src/pages/NotificationChannelsPage.tsx

@@ -71,6 +71,7 @@ const DOMAIN_SCOPE_OPTIONS = [
   { value: "reimbursement", label: "报销" },
   { value: "leave", label: "请假" },
   { value: "procurement", label: "采购" },
+  { value: "travel", label: "差旅" },
   { value: "asset", label: "资产" },
   { value: "inventory", label: "盘点" },
 ] as const;
@@ -85,6 +86,8 @@ const NOTIFICATION_TYPE_OPTIONS = [
   { value: "leave.rejected", label: "leave.rejected" },
   { value: "purchase_request.approved", label: "purchase_request.approved" },
   { value: "purchase_request.rejected", label: "purchase_request.rejected" },
+  { value: "travel_request.approved", label: "travel_request.approved" },
+  { value: "travel_request.rejected", label: "travel_request.rejected" },
   { value: "asset.assigned", label: "asset.assigned" },
   { value: "asset.returned", label: "asset.returned" },
   { value: "asset.transferred", label: "asset.transferred" },

client/src/pages/TravelRequestsPage.tsx

@@ -0,0 +1,994 @@
+import { useEffect, useMemo, useState, type Dispatch, type SetStateAction } from "react";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { useSearchParams } from "react-router-dom";
+import { toast } from "sonner";
+import { mapApiErrorMessage } from "../api/errorMessages";
+import { isApiError } from "../api/types";
+import {
+  createTravelRequest,
+  fetchTravelRequestDetail,
+  fetchTravelRequests,
+  submitTravelRequest,
+  updateTravelRequest,
+  withdrawTravelRequest,
+  type TravelRequestDetail,
+  type TravelRequestPayload,
+  type TravelRequestStatus,
+  type TravelSegmentRole,
+  type TravelTransportType,
+  type TravelTripType,
+} from "../api/travelRequests";
+import { fetchCostCenters, fetchLegalEntities } from "../api/masterData";
+import { useAuth } from "../auth/AuthContext";
+import { hasPermission } from "../auth/permissions";
+import { CardSkeleton } from "../components/common/CardSkeleton";
+import { EmptyStateCard } from "../components/common/EmptyStateCard";
+import { PageHeader } from "../components/common/PageHeader";
+import { Pagination } from "../components/common/Pagination";
+import { StatusBadge } from "../components/common/StatusBadge";
+import { TableSkeleton } from "../components/common/TableSkeleton";
+import { Button } from "../components/ui/button";
+import { Input } from "../components/ui/input";
+import { Label } from "../components/ui/label";
+import { Textarea } from "../components/ui/textarea";
+
+const PAGE_SIZE = 12;
+
+type DraftSegment = {
+  localId: string;
+  segmentRole: TravelSegmentRole;
+  transportType: TravelTransportType;
+  fromCity: string;
+  toCity: string;
+  departAt: string;
+  arriveAt: string;
+};
+
+function resolveError(error: unknown) {
+  if (isApiError(error)) {
+    return `${error.code}: ${mapApiErrorMessage(error.code, error.details, error.message)}`;
+  }
+  if (error instanceof Error) {
+    return error.message;
+  }
+  return "请求失败，请稍后重试。";
+}
+
+function emptySegment(): DraftSegment {
+  return {
+    localId: crypto.randomUUID(),
+    segmentRole: "outbound",
+    transportType: "flight",
+    fromCity: "",
+    toCity: "",
+    departAt: "",
+    arriveAt: "",
+  };
+}
+
+function toDateTimeLocalValue(value: string | null) {
+  if (!value) {
+    return "";
+  }
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return "";
+  }
+  const pad = (input: number) => String(input).padStart(2, "0");
+  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}T${pad(date.getHours())}:${pad(date.getMinutes())}`;
+}
+
+function toApiDateTime(value: string) {
+  if (!value) {
+    return value;
+  }
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return value;
+  }
+  return date.toISOString();
+}
+
+function tripTypeLabel(value: TravelTripType) {
+  return value === "international" ? "国际" : "国内";
+}
+
+function segmentRoleLabel(value: TravelSegmentRole) {
+  if (value === "outbound") return "去程";
+  if (value === "return") return "返程";
+  return "中转";
+}
+
+function transportTypeLabel(value: TravelTransportType) {
+  if (value === "flight") return "航班";
+  if (value === "train") return "火车";
+  if (value === "car") return "汽车";
+  if (value === "bus") return "大巴";
+  return "其他";
+}
+
+function buildPayload(values: {
+  purpose: string;
+  tripType: TravelTripType;
+  startDate: string;
+  endDate: string;
+  legalEntityId: string;
+  costCenterId: string;
+  estimatedAmount: string;
+  segments: DraftSegment[];
+}): TravelRequestPayload {
+  return {
+    purpose: values.purpose.trim(),
+    tripType: values.tripType,
+    startDate: values.startDate,
+    endDate: values.endDate,
+    legalEntityId: values.legalEntityId,
+    costCenterId: values.costCenterId,
+    estimatedAmount: values.estimatedAmount,
+    segments: values.segments.map((item) => ({
+      segmentRole: item.segmentRole,
+      transportType: item.transportType,
+      fromCity: item.fromCity.trim(),
+      toCity: item.toCity.trim(),
+      departAt: toApiDateTime(item.departAt),
+      arriveAt: toApiDateTime(item.arriveAt),
+    })),
+  };
+}
+
+function buildPatchPayload(values: Parameters<typeof buildPayload>[0]) {
+  return buildPayload(values);
+}
+
+function buildDraftSegments(detail: TravelRequestDetail | null): DraftSegment[] {
+  if (!detail?.segments?.length) {
+    return [emptySegment()];
+  }
+
+  return detail.segments.map((item) => ({
+    localId: item.id,
+    segmentRole: item.segmentRole,
+    transportType: item.transportType,
+    fromCity: item.fromCity,
+    toCity: item.toCity,
+    departAt: toDateTimeLocalValue(item.departAt),
+    arriveAt: toDateTimeLocalValue(item.arriveAt),
+  }));
+}
+
+export function TravelRequestsPage() {
+  const queryClient = useQueryClient();
+  const { permissions } = useAuth();
+  const [searchParams, setSearchParams] = useSearchParams();
+
+  const canCreate = hasPermission(permissions, "travel.create");
+  const canViewAll = hasPermission(permissions, "travel.view_all") || hasPermission(permissions, "travel.manage");
+
+  const [status, setStatus] = useState<TravelRequestStatus | "">("");
+  const [mine, setMine] = useState(true);
+  const [tripType, setTripType] = useState<TravelTripType | "">("");
+  const [legalEntityFilter, setLegalEntityFilter] = useState("");
+  const [costCenterFilter, setCostCenterFilter] = useState("");
+  const [page, setPage] = useState(1);
+
+  const [selectedId, setSelectedId] = useState(searchParams.get("id") ?? "");
+  const [formError, setFormError] = useState("");
+  const [purpose, setPurpose] = useState("");
+  const [formTripType, setFormTripType] = useState<TravelTripType>("domestic");
+  const [startDate, setStartDate] = useState("");
+  const [endDate, setEndDate] = useState("");
+  const [legalEntityId, setLegalEntityId] = useState("");
+  const [costCenterId, setCostCenterId] = useState("");
+  const [estimatedAmount, setEstimatedAmount] = useState("0.00");
+  const [segments, setSegments] = useState<DraftSegment[]>([emptySegment()]);
+
+  const selectedQueryId = searchParams.get("id") ?? "";
+
+  useEffect(() => {
+    setSelectedId(selectedQueryId);
+  }, [selectedQueryId]);
+
+  const legalEntitiesQuery = useQuery({
+    queryKey: ["travel-requests", "legal-entities"],
+    queryFn: () => fetchLegalEntities({ enabled: true }),
+  });
+
+  const costCentersQuery = useQuery({
+    queryKey: ["travel-requests", "cost-centers"],
+    queryFn: () => fetchCostCenters({ enabled: true }),
+  });
+
+  const listQuery = useQuery({
+    queryKey: ["travel-requests", "list", status, mine, tripType, legalEntityFilter, costCenterFilter, page],
+    queryFn: () =>
+      fetchTravelRequests({
+        status: status || undefined,
+        mine: canViewAll ? mine : true,
+        tripType: tripType || undefined,
+        legalEntityId: legalEntityFilter || undefined,
+        costCenterId: costCenterFilter || undefined,
+        page,
+        pageSize: PAGE_SIZE,
+      }),
+  });
+
+  const detailQuery = useQuery({
+    enabled: Boolean(selectedId),
+    queryKey: ["travel-requests", "detail", selectedId],
+    queryFn: () => fetchTravelRequestDetail(selectedId),
+  });
+
+  const selectableCostCenters = useMemo(() => {
+    return (costCentersQuery.data?.items ?? []).filter((item) => {
+      if (!legalEntityId) {
+        return true;
+      }
+      return item.legalEntityId === legalEntityId;
+    });
+  }, [costCentersQuery.data?.items, legalEntityId]);
+
+  const filterableCostCenters = useMemo(() => {
+    return (costCentersQuery.data?.items ?? []).filter((item) => {
+      if (!legalEntityFilter) {
+        return true;
+      }
+      return item.legalEntityId === legalEntityFilter;
+    });
+  }, [costCentersQuery.data?.items, legalEntityFilter]);
+
+  useEffect(() => {
+    if (detailQuery.data) {
+      setPurpose(detailQuery.data.purpose ?? "");
+      setFormTripType(detailQuery.data.tripType);
+      setStartDate(detailQuery.data.startDate ?? "");
+      setEndDate(detailQuery.data.endDate ?? "");
+      setLegalEntityId(detailQuery.data.legalEntityId ?? "");
+      setCostCenterId(detailQuery.data.costCenterId ?? "");
+      setEstimatedAmount(detailQuery.data.estimatedAmount ?? "0.00");
+      setSegments(buildDraftSegments(detailQuery.data));
+      setFormError("");
+      return;
+    }
+
+    if (!selectedId) {
+      setPurpose("");
+      setFormTripType("domestic");
+      setStartDate("");
+      setEndDate("");
+      setLegalEntityId("");
+      setCostCenterId("");
+      setEstimatedAmount("0.00");
+      setSegments([emptySegment()]);
+      setFormError("");
+    }
+  }, [detailQuery.data, selectedId]);
+
+  useEffect(() => {
+    if (selectedId || canCreate) {
+      return;
+    }
+    const nextId = listQuery.data?.items?.[0]?.id ?? "";
+    if (!nextId) {
+      return;
+    }
+    const next = new URLSearchParams(searchParams);
+    next.set("id", nextId);
+    setSearchParams(next);
+  }, [canCreate, listQuery.data?.items, selectedId, setSearchParams]);
+
+  const detail = detailQuery.data ?? null;
+  const isDraftEditing = Boolean(detail && detail.status === "draft" && detail.permissions.canEditDraft);
+
+  function selectTravelRequest(nextId: string) {
+    setSelectedId(nextId);
+    const next = new URLSearchParams(searchParams);
+    if (nextId) {
+      next.set("id", nextId);
+    } else {
+      next.delete("id");
+    }
+    setSearchParams(next);
+  }
+
+  function validateForm() {
+    if (!canCreate && !selectedId) {
+      throw new Error("当前无可保存的差旅申请");
+    }
+    if (!purpose.trim()) {
+      throw new Error("请填写出差目的");
+    }
+    if (!startDate || !endDate) {
+      throw new Error("请选择出差起止日期");
+    }
+    if (!legalEntityId || !costCenterId) {
+      throw new Error("请选择法体与成本中心");
+    }
+    if (!estimatedAmount || Number(estimatedAmount) < 0) {
+      throw new Error("请填写有效的预估金额");
+    }
+    if (!segments.length) {
+      throw new Error("至少需要一条行程段");
+    }
+    for (const item of segments) {
+      if (!item.fromCity.trim() || !item.toCity.trim()) {
+        throw new Error("请补全行程段的出发地与目的地");
+      }
+      if (!item.departAt || !item.arriveAt) {
+        throw new Error("请补全行程段的出发与到达时间");
+      }
+    }
+  }
+
+  const saveMutation = useMutation({
+    mutationFn: async () => {
+      validateForm();
+      const values = { purpose, tripType: formTripType, startDate, endDate, legalEntityId, costCenterId, estimatedAmount, segments };
+      if (selectedId && isDraftEditing) {
+        return updateTravelRequest(selectedId, buildPatchPayload(values));
+      }
+      return createTravelRequest(buildPayload(values));
+    },
+    onSuccess: async (travelRequest) => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: ["travel-requests"] }),
+        queryClient.invalidateQueries({ queryKey: ["workflow", "tasks"] }),
+      ]);
+      setFormError("");
+      selectTravelRequest(travelRequest.id);
+      toast.success(selectedId && isDraftEditing ? "差旅草稿已更新" : "差旅草稿已创建");
+    },
+    onError: (error) => {
+      const message = resolveError(error);
+      setFormError(message);
+      toast.error(message);
+    },
+  });
+
+  const submitMutation = useMutation({
+    mutationFn: async () => {
+      if (!selectedId) {
+        throw new Error("请选择待提交的差旅申请");
+      }
+      return submitTravelRequest(selectedId);
+    },
+    onSuccess: async () => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: ["travel-requests"] }),
+        queryClient.invalidateQueries({ queryKey: ["workflow", "tasks"] }),
+      ]);
+      toast.success("差旅申请已提交");
+    },
+    onError: (error) => {
+      const message = resolveError(error);
+      setFormError(message);
+      toast.error(message);
+    },
+  });
+
+  const withdrawMutation = useMutation({
+    mutationFn: async () => {
+      if (!selectedId) {
+        throw new Error("请选择待撤回的差旅申请");
+      }
+      return withdrawTravelRequest(selectedId);
+    },
+    onSuccess: async () => {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: ["travel-requests"] }),
+        queryClient.invalidateQueries({ queryKey: ["workflow", "tasks"] }),
+      ]);
+      toast.success("差旅申请已撤回");
+    },
+    onError: (error) => {
+      const message = resolveError(error);
+      setFormError(message);
+      toast.error(message);
+    },
+  });
+
+  const totalPages = Math.max(1, Math.ceil((listQuery.data?.total ?? 0) / PAGE_SIZE));
+
+  return (
+    <div className="space-y-6">
+      <PageHeader
+        title="差旅申请"
+        subtitle="差旅主单、行程段、预算锁定与审批待办统一收口。"
+        actions={
+          canCreate ? (
+            <Button type="button" onClick={() => selectTravelRequest("")}>新建差旅申请</Button>
+          ) : undefined
+        }
+      />
+
+      {formError ? (
+        <p className="rounded-lg border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-600">{formError}</p>
+      ) : null}
+
+      <div className="grid gap-6 xl:grid-cols-[360px_minmax(0,1fr)]">
+        <section className="card-std space-y-4 p-5">
+          <div className="grid gap-3">
+            <div>
+              <Label htmlFor="travel-filter-status">状态</Label>
+              <select
+                id="travel-filter-status"
+                className="select-std mt-1"
+                value={status}
+                onChange={(event) => {
+                  setStatus(event.target.value as TravelRequestStatus | "");
+                  setPage(1);
+                }}
+              >
+                <option value="">全部状态</option>
+                <option value="draft">草稿</option>
+                <option value="reviewing">审批中</option>
+                <option value="approved">已通过</option>
+                <option value="rejected">已驳回</option>
+              </select>
+            </div>
+
+            {canViewAll ? (
+              <div>
+                <Label htmlFor="travel-filter-scope">范围</Label>
+                <select
+                  id="travel-filter-scope"
+                  className="select-std mt-1"
+                  value={mine ? "mine" : "all"}
+                  onChange={(event) => {
+                    setMine(event.target.value !== "all");
+                    setPage(1);
+                  }}
+                >
+                  <option value="mine">仅看我的</option>
+                  <option value="all">查看全部</option>
+                </select>
+              </div>
+            ) : null}
+
+            <div>
+              <Label htmlFor="travel-filter-trip-type">出差类型</Label>
+              <select
+                id="travel-filter-trip-type"
+                className="select-std mt-1"
+                value={tripType}
+                onChange={(event) => {
+                  setTripType(event.target.value as TravelTripType | "");
+                  setPage(1);
+                }}
+              >
+                <option value="">全部类型</option>
+                <option value="domestic">国内</option>
+                <option value="international">国际</option>
+              </select>
+            </div>
+
+            <div>
+              <Label htmlFor="travel-filter-legal-entity">法体</Label>
+              <select
+                id="travel-filter-legal-entity"
+                className="select-std mt-1"
+                value={legalEntityFilter}
+                onChange={(event) => {
+                  setLegalEntityFilter(event.target.value);
+                  setCostCenterFilter("");
+                  setPage(1);
+                }}
+              >
+                <option value="">全部法体</option>
+                {(legalEntitiesQuery.data?.items ?? []).map((item) => (
+                  <option key={item.id} value={item.id}>{item.name}</option>
+                ))}
+              </select>
+            </div>
+
+            <div>
+              <Label htmlFor="travel-filter-cost-center">成本中心</Label>
+              <select
+                id="travel-filter-cost-center"
+                className="select-std mt-1"
+                value={costCenterFilter}
+                onChange={(event) => {
+                  setCostCenterFilter(event.target.value);
+                  setPage(1);
+                }}
+              >
+                <option value="">全部成本中心</option>
+                {filterableCostCenters.map((item) => (
+                  <option key={item.id} value={item.id}>{item.name}</option>
+                ))}
+              </select>
+            </div>
+          </div>
+
+          {listQuery.isLoading ? <TableSkeleton columns={1} rows={6} /> : null}
+          {listQuery.isError ? (
+            <p className="rounded-lg border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-600">{resolveError(listQuery.error)}</p>
+          ) : null}
+
+          {!listQuery.isLoading && !listQuery.isError ? (
+            <div className="space-y-3">
+              {(listQuery.data?.items ?? []).length ? (
+                (listQuery.data?.items ?? []).map((item) => (
+                  <button
+                    key={item.id}
+                    type="button"
+                    onClick={() => selectTravelRequest(item.id)}
+                    className={`w-full rounded-xl border px-4 py-3 text-left transition ${
+                      item.id === selectedId ? "border-primary bg-primary-50" : "border-zinc-200 hover:border-zinc-300"
+                    }`}
+                    data-testid={`travel-request-item-${item.id}`}
+                  >
+                    <div className="flex items-start justify-between gap-3">
+                      <div>
+                        <p className="text-sm font-semibold text-zinc-900">{item.requestNo ?? item.purpose}</p>
+                        <p className="mt-1 text-xs text-zinc-500 line-clamp-2">{item.purpose}</p>
+                      </div>
+                      <StatusBadge status={item.status} />
+                    </div>
+                    <div className="mt-2 space-y-1 text-xs text-zinc-500">
+                      <div>{tripTypeLabel(item.tripType)} · {item.startDate ?? "-"} → {item.endDate ?? "-"}</div>
+                      <div>预估金额：{item.estimatedAmount}</div>
+                      <div>申请人：{item.applicant?.name ?? "-"}</div>
+                    </div>
+                  </button>
+                ))
+              ) : (
+                <EmptyStateCard
+                  title="暂无差旅申请"
+                  description={canCreate ? "点击右上角创建新的差旅草稿。" : "当前筛选条件下没有可查看的差旅申请。"}
+                />
+              )}
+            </div>
+          ) : null}
+
+          <Pagination page={page} totalPages={totalPages} onPageChange={setPage} testIdPrefix="travel-requests" />
+        </section>
+
+        <section className="space-y-6">
+          {selectedId && detailQuery.isLoading ? <CardSkeleton lines={10} /> : null}
+
+          {selectedId && detailQuery.isError ? (
+            <div className="card-std p-6 text-sm text-red-600">{resolveError(detailQuery.error)}</div>
+          ) : null}
+
+          {!selectedId ? (
+            canCreate ? (
+              <div className="card-std space-y-6 p-6">
+                <div>
+                  <h3 className="text-lg font-semibold text-zinc-900">新建差旅申请</h3>
+                  <p className="mt-1 text-sm text-zinc-500">填写主单与行程段，保存为草稿后可继续编辑并提交审批。</p>
+                </div>
+                <TravelRequestForm
+                  purpose={purpose}
+                  setPurpose={setPurpose}
+                  tripType={formTripType}
+                  setTripType={setFormTripType}
+                  startDate={startDate}
+                  setStartDate={setStartDate}
+                  endDate={endDate}
+                  setEndDate={setEndDate}
+                  legalEntityId={legalEntityId}
+                  setLegalEntityId={setLegalEntityId}
+                  legalEntities={legalEntitiesQuery.data?.items ?? []}
+                  costCenterId={costCenterId}
+                  setCostCenterId={setCostCenterId}
+                  costCenters={selectableCostCenters}
+                  estimatedAmount={estimatedAmount}
+                  setEstimatedAmount={setEstimatedAmount}
+                  segments={segments}
+                  setSegments={setSegments}
+                  readOnly={false}
+                  budgetPoolName="待提交时自动解析"
+                />
+                <div className="flex justify-end">
+                  <Button type="button" onClick={() => saveMutation.mutate()} disabled={saveMutation.isPending} data-testid="travel-request-save">
+                    {saveMutation.isPending ? "保存中..." : "保存草稿"}
+                  </Button>
+                </div>
+              </div>
+            ) : (
+              <EmptyStateCard title="请选择差旅申请" description="从左侧选择一条差旅申请查看详情。" />
+            )
+          ) : null}
+
+          {detail ? (
+            <div className="space-y-6">
+              <div className="card-std space-y-4 p-6">
+                <div className="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
+                  <div>
+                    <div className="flex items-center gap-3">
+                      <h3 className="text-lg font-semibold text-zinc-900">{detail.requestNo ?? "差旅草稿"}</h3>
+                      <StatusBadge status={detail.status} />
+                    </div>
+                    <p className="mt-1 text-sm text-zinc-500">{detail.purpose}</p>
+                  </div>
+                  <div className="flex flex-wrap gap-2">
+                    {detail.permissions.canSubmit ? (
+                      <Button
+                        type="button"
+                        variant="secondary"
+                        onClick={() => submitMutation.mutate()}
+                        disabled={submitMutation.isPending}
+                        data-testid="travel-request-submit"
+                      >
+                        {submitMutation.isPending ? "提交中..." : "提交审批"}
+                      </Button>
+                    ) : null}
+                    {detail.permissions.canWithdraw ? (
+                      <Button
+                        type="button"
+                        variant="secondary"
+                        onClick={() => withdrawMutation.mutate()}
+                        disabled={withdrawMutation.isPending}
+                        data-testid="travel-request-withdraw"
+                      >
+                        {withdrawMutation.isPending ? "撤回中..." : "撤回到草稿"}
+                      </Button>
+                    ) : null}
+                    {isDraftEditing ? (
+                      <Button type="button" onClick={() => saveMutation.mutate()} disabled={saveMutation.isPending} data-testid="travel-request-update">
+                        {saveMutation.isPending ? "保存中..." : "保存修改"}
+                      </Button>
+                    ) : null}
+                  </div>
+                </div>
+
+                <div className="grid gap-3 md:grid-cols-2 xl:grid-cols-4 text-sm">
+                  <div>
+                    <p className="text-zinc-500">申请人</p>
+                    <p className="font-medium text-zinc-900">{detail.applicant?.name ?? "-"}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">出差类型</p>
+                    <p className="font-medium text-zinc-900">{tripTypeLabel(detail.tripType)}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">起止日期</p>
+                    <p className="font-medium text-zinc-900">{detail.startDate ?? "-"} → {detail.endDate ?? "-"}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">预算池</p>
+                    <p className="font-medium text-zinc-900">{detail.budgetPool?.name ?? "待提交时自动解析"}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">法体</p>
+                    <p className="font-medium text-zinc-900">{detail.legalEntity?.name ?? "-"}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">成本中心</p>
+                    <p className="font-medium text-zinc-900">{detail.costCenter?.name ?? "-"}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">预估金额</p>
+                    <p className="font-medium text-zinc-900">{detail.estimatedAmount}</p>
+                  </div>
+                  <div>
+                    <p className="text-zinc-500">提交人</p>
+                    <p className="font-medium text-zinc-900">{detail.submitter?.name ?? "-"}</p>
+                  </div>
+                </div>
+              </div>
+
+              <div className="card-std p-6">
+                <TravelRequestForm
+                  purpose={purpose}
+                  setPurpose={setPurpose}
+                  tripType={formTripType}
+                  setTripType={setFormTripType}
+                  startDate={startDate}
+                  setStartDate={setStartDate}
+                  endDate={endDate}
+                  setEndDate={setEndDate}
+                  legalEntityId={legalEntityId}
+                  setLegalEntityId={setLegalEntityId}
+                  legalEntities={legalEntitiesQuery.data?.items ?? []}
+                  costCenterId={costCenterId}
+                  setCostCenterId={setCostCenterId}
+                  costCenters={selectableCostCenters}
+                  estimatedAmount={estimatedAmount}
+                  setEstimatedAmount={setEstimatedAmount}
+                  segments={segments}
+                  setSegments={setSegments}
+                  readOnly={!isDraftEditing}
+                  budgetPoolName={detail.budgetPool?.name ?? "待提交时自动解析"}
+                />
+              </div>
+
+              <div className="grid gap-6 xl:grid-cols-2">
+                <div className="card-std space-y-3 p-6">
+                  <h3 className="text-base font-semibold text-zinc-900">审批轨道</h3>
+                  {detail.pendingWorkflow ? (
+                    <div className="space-y-2 text-sm">
+                      <div>实例：{detail.pendingWorkflow.instanceId}</div>
+                      <div>状态：<StatusBadge status={detail.pendingWorkflow.currentStatus} /></div>
+                      <div>当前步骤：{detail.pendingWorkflow.task?.stepName ?? detail.pendingWorkflow.currentStepId}</div>
+                      <div>审批角色：{detail.pendingWorkflow.task?.assigneeRole ?? "-"}</div>
+                    </div>
+                  ) : (
+                    <p className="text-sm text-zinc-500">当前没有进行中的审批实例。</p>
+                  )}
+                </div>
+
+                <div className="card-std space-y-3 p-6">
+                  <h3 className="text-base font-semibold text-zinc-900">关联差旅订单</h3>
+                  {detail.travelOrders.length ? (
+                    <div className="space-y-3 text-sm">
+                      {detail.travelOrders.map((item) => (
+                        <div key={item.id} className="rounded-lg border border-zinc-200 p-3">
+                          <div className="flex items-center justify-between gap-3">
+                            <div className="font-medium text-zinc-900">{item.externalOrderNo}</div>
+                            <StatusBadge status={item.status} />
+                          </div>
+                          <div className="mt-2 text-xs text-zinc-500 space-y-1">
+                            <div>来源：{item.source}</div>
+                            <div>发生日期：{item.occurredAt ?? "-"}</div>
+                            <div>金额：{item.amount ?? "-"} {item.currency}</div>
+                            <div>报销关联：{item.linkedReimbursementId ?? "-"}</div>
+                          </div>
+                        </div>
+                      ))}
+                    </div>
+                  ) : (
+                    <p className="text-sm text-zinc-500">当前暂无关联的 `travel_orders` 入站记录。</p>
+                  )}
+                </div>
+              </div>
+            </div>
+          ) : null}
+        </section>
+      </div>
+    </div>
+  );
+}
+
+type TravelRequestFormProps = {
+  purpose: string;
+  setPurpose: (value: string) => void;
+  tripType: TravelTripType;
+  setTripType: (value: TravelTripType) => void;
+  startDate: string;
+  setStartDate: (value: string) => void;
+  endDate: string;
+  setEndDate: (value: string) => void;
+  legalEntityId: string;
+  setLegalEntityId: (value: string) => void;
+  legalEntities: Array<{ id: string; name: string; code: string }>;
+  costCenterId: string;
+  setCostCenterId: (value: string) => void;
+  costCenters: Array<{ id: string; name: string; code: string }>;
+  estimatedAmount: string;
+  setEstimatedAmount: (value: string) => void;
+  segments: DraftSegment[];
+  setSegments: Dispatch<SetStateAction<DraftSegment[]>>;
+  readOnly: boolean;
+  budgetPoolName: string;
+};
+
+function TravelRequestForm(props: TravelRequestFormProps) {
+  const {
+    purpose,
+    setPurpose,
+    tripType,
+    setTripType,
+    startDate,
+    setStartDate,
+    endDate,
+    setEndDate,
+    legalEntityId,
+    setLegalEntityId,
+    legalEntities,
+    costCenterId,
+    setCostCenterId,
+    costCenters,
+    estimatedAmount,
+    setEstimatedAmount,
+    segments,
+    setSegments,
+    readOnly,
+    budgetPoolName,
+  } = props;
+
+  return (
+    <div className="space-y-6">
+      <div className="grid gap-4 md:grid-cols-2">
+        <div className="md:col-span-2">
+          <Label htmlFor="travel-purpose">出差目的</Label>
+          <Textarea
+            id="travel-purpose"
+            value={purpose}
+            onChange={(event) => setPurpose(event.target.value)}
+            rows={3}
+            readOnly={readOnly}
+            className="mt-1"
+          />
+        </div>
+        <div>
+          <Label htmlFor="travel-trip-type">出差类型</Label>
+          <select
+            id="travel-trip-type"
+            className="select-std mt-1"
+            value={tripType}
+            onChange={(event) => setTripType(event.target.value as TravelTripType)}
+            disabled={readOnly}
+          >
+            <option value="domestic">国内</option>
+            <option value="international">国际</option>
+          </select>
+        </div>
+        <div>
+          <Label htmlFor="travel-amount">预估金额</Label>
+          <Input id="travel-amount" className="mt-1" value={estimatedAmount} onChange={(event) => setEstimatedAmount(event.target.value)} readOnly={readOnly} />
+        </div>
+        <div>
+          <Label htmlFor="travel-start-date">开始日期</Label>
+          <Input id="travel-start-date" className="mt-1" type="date" value={startDate} onChange={(event) => setStartDate(event.target.value)} readOnly={readOnly} />
+        </div>
+        <div>
+          <Label htmlFor="travel-end-date">结束日期</Label>
+          <Input id="travel-end-date" className="mt-1" type="date" value={endDate} onChange={(event) => setEndDate(event.target.value)} readOnly={readOnly} />
+        </div>
+        <div>
+          <Label htmlFor="travel-legal-entity">法体</Label>
+          <select
+            id="travel-legal-entity"
+            className="select-std mt-1"
+            value={legalEntityId}
+            onChange={(event) => {
+              setLegalEntityId(event.target.value);
+              setCostCenterId("");
+            }}
+            disabled={readOnly}
+          >
+            <option value="">请选择法体</option>
+            {legalEntities.map((item) => (
+              <option key={item.id} value={item.id}>{item.name}</option>
+            ))}
+          </select>
+        </div>
+        <div>
+          <Label htmlFor="travel-cost-center">成本中心</Label>
+          <select
+            id="travel-cost-center"
+            className="select-std mt-1"
+            value={costCenterId}
+            onChange={(event) => setCostCenterId(event.target.value)}
+            disabled={readOnly}
+          >
+            <option value="">请选择成本中心</option>
+            {costCenters.map((item) => (
+              <option key={item.id} value={item.id}>{item.code} · {item.name}</option>
+            ))}
+          </select>
+        </div>
+        <div className="md:col-span-2">
+          <Label>预算池</Label>
+          <div className="mt-1 rounded-lg border border-zinc-200 bg-zinc-50 px-3 py-2 text-sm text-zinc-600">{budgetPoolName}</div>
+        </div>
+      </div>
+
+      <div className="space-y-3">
+        <div className="flex items-center justify-between gap-3">
+          <h3 className="text-base font-semibold text-zinc-900">行程段</h3>
+          {!readOnly ? (
+            <Button type="button" variant="secondary" onClick={() => setSegments((current) => [...current, emptySegment()])}>
+              新增行程段
+            </Button>
+          ) : null}
+        </div>
+
+        <div className="space-y-3">
+          {segments.map((segment, index) => (
+            <div key={segment.localId} className="rounded-xl border border-zinc-200 p-4">
+              <div className="mb-3 flex items-center justify-between gap-3">
+                <p className="text-sm font-medium text-zinc-900">第 {index + 1} 段</p>
+                {!readOnly && segments.length > 1 ? (
+                  <Button
+                    type="button"
+                    variant="secondary"
+                    onClick={() => setSegments((current) => current.filter((item) => item.localId !== segment.localId))}
+                  >
+                    删除
+                  </Button>
+                ) : null}
+              </div>
+              <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-3">
+                <div>
+                  <Label>角色</Label>
+                  <select
+                    className="select-std mt-1"
+                    value={segment.segmentRole}
+                    disabled={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, segmentRole: event.target.value as TravelSegmentRole } : item),
+                      )
+                    }
+                  >
+                    <option value="outbound">去程</option>
+                    <option value="return">返程</option>
+                    <option value="connection">中转</option>
+                  </select>
+                </div>
+                <div>
+                  <Label>交通方式</Label>
+                  <select
+                    className="select-std mt-1"
+                    value={segment.transportType}
+                    disabled={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, transportType: event.target.value as TravelTransportType } : item),
+                      )
+                    }
+                  >
+                    <option value="flight">航班</option>
+                    <option value="train">火车</option>
+                    <option value="car">汽车</option>
+                    <option value="bus">大巴</option>
+                    <option value="other">其他</option>
+                  </select>
+                </div>
+                <div>
+                  <Label>出发地</Label>
+                  <Input
+                    className="mt-1"
+                    value={segment.fromCity}
+                    readOnly={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, fromCity: event.target.value } : item),
+                      )
+                    }
+                  />
+                </div>
+                <div>
+                  <Label>目的地</Label>
+                  <Input
+                    className="mt-1"
+                    value={segment.toCity}
+                    readOnly={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, toCity: event.target.value } : item),
+                      )
+                    }
+                  />
+                </div>
+                <div>
+                  <Label>出发时间</Label>
+                  <Input
+                    className="mt-1"
+                    type="datetime-local"
+                    value={segment.departAt}
+                    readOnly={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, departAt: event.target.value } : item),
+                      )
+                    }
+                  />
+                </div>
+                <div>
+                  <Label>到达时间</Label>
+                  <Input
+                    className="mt-1"
+                    type="datetime-local"
+                    value={segment.arriveAt}
+                    readOnly={readOnly}
+                    onChange={(event) =>
+                      setSegments((current) =>
+                        current.map((item) => item.localId === segment.localId ? { ...item, arriveAt: event.target.value } : item),
+                      )
+                    }
+                  />
+                </div>
+              </div>
+              {readOnly ? (
+                <p className="mt-3 text-xs text-zinc-500">{segmentRoleLabel(segment.segmentRole)} · {transportTypeLabel(segment.transportType)} · {segment.fromCity} → {segment.toCity}</p>
+              ) : null}
+            </div>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}

client/src/pages/WorkflowTaskDetailPage.tsx

@@ -30,6 +30,9 @@ function entityTitle(entityType: string | undefined) {
   if (entityType === "purchase_request") {
     return "采购申请";
   }
+  if (entityType === "travel_request") {
+    return "差旅申请";
+  }
   return entityType || "业务单据";
 }
 
@@ -200,6 +203,26 @@ export function WorkflowTaskDetailPage() {
             <div>说明：{detail.purchaseRequest.reason ?? "-"}</div>
           </>
         ) : null}
+        {detail.travelRequest ? (
+          <>
+            <div>差旅单号：{detail.travelRequest.requestNo ?? detail.travelRequest.id}</div>
+            <div>申请人：{detail.travelRequest.applicant?.name ?? "-"}</div>
+            <div>出差类型：{detail.travelRequest.tripType === "international" ? "国际" : "国内"}</div>
+            <div>法体：{detail.travelRequest.legalEntity?.name ?? "-"}</div>
+            <div>成本中心：{detail.travelRequest.costCenter?.name ?? "-"}</div>
+            <div>起止日期：{detail.travelRequest.startDate ?? "-"} → {detail.travelRequest.endDate ?? "-"}</div>
+            <div>预估金额：{detail.travelRequest.estimatedAmount ?? "-"}</div>
+            <div>出差目的：{detail.travelRequest.purpose || "-"}</div>
+            <div>
+              行程段：
+              {detail.travelRequest.segments.length
+                ? detail.travelRequest.segments
+                    .map((item) => `${item.fromCity}→${item.toCity}(${item.segmentRole})`)
+                    .join("；")
+                : "-"}
+            </div>
+          </>
+        ) : null}
       </div>
 
       <div className="card-std space-y-4 p-6">

client/src/pages/WorkflowTasksPage.tsx

@@ -23,6 +23,9 @@ function entityLabel(entityType: string | undefined) {
   if (entityType === "purchase_request") {
     return "采购";
   }
+  if (entityType === "travel_request") {
+    return "差旅";
+  }
   return entityType || "-";
 }
 
@@ -48,7 +51,7 @@ export function WorkflowTasksPage() {
 
   return (
     <div className="space-y-6">
-      <PageHeader title="待我处理" subtitle="审批待办列表，覆盖报销、请假与采购流程。" />
+      <PageHeader title="待我处理" subtitle="审批待办列表，覆盖报销、请假、采购与差旅流程。" />
 
       <div className="card-std p-6 space-y-4">
         <Tabs

client/src/router/index.tsx

@@ -20,6 +20,7 @@ import { NotificationsPage } from "../pages/NotificationsPage";
 import { NotificationChannelsPage } from "../pages/NotificationChannelsPage";
 import { ErpIntegrationPage } from "../pages/ErpIntegrationPage";
 import { PurchaseRequestsPage } from "../pages/PurchaseRequestsPage";
+import { TravelRequestsPage } from "../pages/TravelRequestsPage";
 import { AssetRegistryPage } from "../pages/AssetRegistryPage";
 import { InventoryChecksPage } from "../pages/InventoryChecksPage";
 import { NotFoundPage } from "../pages/NotFoundPage";
@@ -112,6 +113,15 @@ export function AppRouter() {
           }
         />
 
+        <Route
+          path="travel-requests"
+          element={
+            <RequirePermission anyOf={["travel.create", "travel.view_own", "travel.view_all", "travel.manage"]}>
+              <TravelRequestsPage />
+            </RequirePermission>
+          }
+        />
+
         <Route
           path="assets"
           element={
@@ -133,7 +143,7 @@ export function AppRouter() {
         <Route
           path="workflow/tasks"
           element={
-            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve"]}>
+            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve", "travel.approve"]}>
               <WorkflowTasksPage />
             </RequirePermission>
           }
@@ -142,7 +152,7 @@ export function AppRouter() {
         <Route
           path="workflow/tasks/:taskId"
           element={
-            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve"]}>
+            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve", "travel.approve"]}>
               <WorkflowTaskDetailPage />
             </RequirePermission>
           }
@@ -169,7 +179,7 @@ export function AppRouter() {
         <Route
           path="mobile/approvals"
           element={
-            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve"]}>
+            <RequirePermission anyOf={["expense.approve", "leave.approve", "procurement.approve", "travel.approve"]}>
               <MobileApprovalsPage />
             </RequirePermission>
           }