feat: 完成P6-P8前端能力闭环（V3,D2,D3,B3）

client/src/api/reimbursements.ts

@@ -59,6 +59,22 @@ export type ReimbursementListResponse = {
   items: ReimbursementListItem[];
 };
 
+export type ReimbursementBudgetHint = {
+  budgetId: string;
+  budgetCode: string;
+  budgetName: string;
+  controlMode: "warn" | "block";
+  warningThresholdPercent: number;
+  allocatedAmount: string;
+  usedAmount: string;
+  remainingAmount: string;
+  currentAmount: string;
+  nextUsedAmount: string;
+  nextUsagePercent: number;
+  exceedsThreshold: boolean;
+  exceedsBudget: boolean;
+};
+
 export type ReimbursementDetail = {
   id: string;
   formNumber: string | null;
@@ -86,6 +102,7 @@ export type ReimbursementDetail = {
     invoiceNumber: string | null;
     totalAmount: string | null;
   }>;
+  budgetHint: ReimbursementBudgetHint | null;
   pendingWorkflow: {
     instanceId: string;
     stepId: string;
@@ -135,6 +152,22 @@ export type ReimbursementItemDeleteResponse = {
   totalAmount: string;
 };
 
+export type ReimbursementSubmitResponse = {
+  reimbursementId: string;
+  formNumber: string;
+  workflowInstanceId: string;
+  currentTaskId: string;
+  status: "reviewing";
+  budget: {
+    budgetId: string;
+    budgetCode: string;
+    controlMode: "warn" | "block";
+    usagePercent: number;
+    exceededThreshold: boolean;
+    exceededBudget: boolean;
+  } | null;
+};
+
 function toQueryString(query: Record<string, string | number | undefined>) {
   const params = new URLSearchParams();
 
@@ -171,7 +204,7 @@ export async function createReimbursement(payload: {
 }
 
 export async function submitReimbursement(reimbursementId: string) {
-  return apiRequestData<Record<string, unknown>>(`/api/reimbursements/${reimbursementId}/submit`, {
+  return apiRequestData<ReimbursementSubmitResponse>(`/api/reimbursements/${reimbursementId}/submit`, {
     method: "POST",
     body: JSON.stringify({}),
   });