/**
 * 服务端状态 —— TanStack Query(编码规范 §1 / §9.2)。
 * 「SSE 事件到达 → 按信封目标失效对应缓存,由订阅层统一做;组件禁止自行轮询或手写缓存。」
 */
import { QueryClient } from '@tanstack/react-query';

export const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      // 缓存失效由 SSE 订阅层驱动,不靠组件轮询
      refetchOnWindowFocus: false,
      retry: 1,
      staleTime: 5_000,
    },
  },
});

export const queryKeys = {
  session: ['session'] as const,
  tasks: ['desk', 'tasks'] as const,
  task: (id: string) => ['desk', 'task', id] as const,
  messages: ['desk', 'messages'] as const,
  approvals: ['desk', 'approvals'] as const,
};