import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
/** Event-bus arbitration is synchronous: reserve before the first startup await.
 * Each controller reports its own lifecycle; idle LAN servers never participate.
 */
export declare class ActiveVoiceGuard {
    private pending;
    private readonly pi;
    private readonly owner;
    constructor(pi: ExtensionAPI, owner: string, active: () => boolean);
    start<T>(action: () => Promise<T>): Promise<T>;
    assertAvailable(): void;
    hold<T>(action: () => Promise<T>): Promise<T>;
}