feat(G2-4): 升级预算页为多作用域模式

client/src/api/budgets.ts

@@ -1,10 +1,30 @@
 import { apiRequestData } from "./http";
 
+export type BudgetScopeType = "global" | "department_legacy" | "cost_center_scoped" | "invalid";
+
 export type BudgetPool = {
   id: string;
   code: string;
   name: string;
+  scopeType: BudgetScopeType;
   departmentId: string | null;
+  legalEntityId: string | null;
+  costCenterId: 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;
   status: "active" | "archived";
   periodStart: string | null;
   periodEnd: string | null;
@@ -27,28 +47,34 @@ export type BudgetListResponse = {
 export type BudgetListQuery = {
   status?: "active" | "archived";
   departmentId?: string;
+  legalEntityId?: string;
+  costCenterId?: string;
   page?: number;
   pageSize?: number;
 };
 
-function toQueryString(query: BudgetListQuery = {}) {
+function toQueryString(query: Record<string, string | number | undefined>) {
   const params = new URLSearchParams();
-  if (query.status) params.set("status", query.status);
-  if (query.departmentId) params.set("departmentId", query.departmentId);
-  if (query.page != null) params.set("page", String(query.page));
-  if (query.pageSize != null) params.set("pageSize", String(query.pageSize));
+  for (const [key, value] of Object.entries(query)) {
+    if (value == null || value === "") {
+      continue;
+    }
+    params.set(key, String(value));
+  }
   const encoded = params.toString();
   return encoded ? `?${encoded}` : "";
 }
 
 export async function fetchBudgets(query: BudgetListQuery = {}) {
-  return apiRequestData<BudgetListResponse>(`/api/budgets${toQueryString(query)}`);
+  return apiRequestData<BudgetListResponse>(`/api/budgets${toQueryString(query as Record<string, string | number | undefined>)}`);
 }
 
 export async function createBudget(payload: {
   code: string;
   name: string;
   departmentId?: string | null;
+  legalEntityId?: string | null;
+  costCenterId?: string | null;
   periodStart: string;
   periodEnd: string;
   allocatedAmount: string;