feat(config): add wallet configuration management page

新增钱包配置管理页面，包含转入转出限额配置功能，添加对应路由导航与API接口，完善配置元信息

src/api/admin-settings.ts

@@ -0,0 +1,30 @@
+import { adminRequest } from "@/lib/admin-http";
+import { API_V1_PREFIX } from "@/api/paths";
+
+const A = `${API_V1_PREFIX}/admin`;
+
+export type AdminSettingItem = {
+  key: string;
+  value: unknown;
+  group: string;
+  description: string | null;
+};
+
+export type AdminSettingListResponse = {
+  items: AdminSettingItem[];
+};
+
+export async function getAdminSettings(
+  group: string,
+): Promise<AdminSettingListResponse> {
+  return adminRequest.get<AdminSettingListResponse>(`${A}/settings`, {
+    params: { group },
+  });
+}
+
+export async function updateAdminSetting(
+  key: string,
+  value: unknown,
+): Promise<AdminSettingItem> {
+  return adminRequest.put<AdminSettingItem>(`${A}/settings/${key}`, { value });
+}