/**
 * Sync Daemon for Background Realtime Sync (TRL-334)
 *
 * Background process that maintains persistent WebSocket connection
 * and auto-syncs full graph state between environments.
 */
import type { VcsOp } from '../vcs/types.js';
export interface SyncDaemonOptions {
    /** WebSocket server URL. */
    url: string;
    /** Local peer ID. */
    localPeerId: string;
    /** Function to get local ops. */
    getLocalOps: () => VcsOp[];
    /** Function to apply received ops. */
    onOpsReceived: (ops: VcsOp[]) => void | Promise<void>;
    /** Sync interval in ms (default: 1000). */
    syncInterval?: number;
}
export interface SyncDaemonState {
    running: boolean;
    connected: boolean;
    lastSyncTime?: string;
    syncCount: number;
    quarantineCount: number;
}
/**
 * Background sync daemon.
 * Maintains WebSocket connection and auto-syncs on interval.
 */
export declare class SyncDaemon {
    private options;
    private engine;
    private transport;
    private quarantine;
    private interval;
    private state;
    constructor(opts: SyncDaemonOptions);
    /**
     * Start the sync daemon.
     */
    start(): Promise<void>;
    /**
     * Stop the sync daemon.
     */
    stop(): void;
    /**
     * Get current daemon state.
     */
    getState(): SyncDaemonState;
    /**
     * Get quarantine entries.
     */
    getQuarantine(): import("../vcs/sync-policy.js").QuarantineEntry[];
    /**
     * Apply a quarantined message.
     */
    applyQuarantine(id: string): Promise<void>;
    /**
     * Reject a quarantined message.
     */
    rejectQuarantine(id: string): void;
}
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