export interface BrokerPeer {
    id: string;
    pid: number;
    cwd: string;
    git_root: string | null;
    /** Controlling tty without /dev/ (e.g. "ttys004"); null when detached. */
    tty?: string | null;
    summary: string;
    registered_at: string;
    last_seen: string;
}
/** Live peers on this machine. Empty when the broker is down; never throws. */
export declare function fetchPeers(): Promise<BrokerPeer[]>;
export interface BrokerMessage {
    id: number;
    from_id: string;
    to_id: string;
    text: string;
    sent_at: string;
}
export declare function brokerRegister(req: {
    pid: number;
    cwd: string;
    git_root: string | null;
    tty: string | null;
    summary: string;
}): Promise<{
    id: string;
}>;
export declare function brokerHeartbeat(id: string): Promise<unknown>;
export declare function brokerUnregister(id: string): Promise<unknown>;
/** Undelivered messages for a peer. The broker marks them delivered as it returns them. */
export declare function brokerPoll(id: string): Promise<BrokerMessage[]>;
export declare function brokerSend(fromId: string, toId: string, text: string): Promise<{
    ok: boolean;
    error?: string;
}>;
export declare function getHumanPeerId(): string | null;
export declare function setHumanPeerId(id: string | null): void;
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