/**
 * event-normalizer.ts — 把 opencodeClient 的事件映射成干净的 ChatEvent 流
 *
 * 输入：opencodeClient EventEmitter 发出的事件
 *   - permissionRequest
 *   - messageUpdated  (Message info)
 *   - messagePartUpdated  (Part, optional delta)
 *   - sessionIdle / sessionError / sessionStatus
 *   - questionAsked
 *
 * 输出：按 sessionId 发布到 ChatEventBus 的 ChatEvent
 *
 * 见 plan-v2.md 第三节事件协议、第四节架构说明。
 */
import { type ChatEventBus } from './event-bus.js';
export declare class ChatEventNormalizer {
    private readonly bus;
    private readonly sessionStates;
    private installed;
    private readonly handlers;
    private cleanupTimer;
    constructor(bus?: ChatEventBus);
    /** 挂接到 opencodeClient 事件源 */
    install(): void;
    /** 从事件源解绑（测试或热重载时用） */
    uninstall(): void;
    private getSessionState;
    private getMessageState;
    private publish;
    private onMessageUpdated;
    private onPartUpdated;
    private processAssistantPartUpdate;
    private onSessionIdle;
    /** Remove session states that haven't received events for SESSION_STATE_TTL_MS */
    private cleanupStaleSessions;
    private onSessionError;
    private onSessionStatus;
    private onPermissionRequest;
}
/** 单例（在 admin-server 启动时 install） */
export declare const chatEventNormalizer: ChatEventNormalizer;
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