import type { EventBus } from '../events/index.js';
export declare class BusyTracker {
    private _count;
    private _bus;
    setBus(bus: EventBus): void;
    trackPendingTask(delta: number): void;
    /** Exposed for testing: current activeLlmCount value. */
    get count(): number;
}
export declare const busyTracker: BusyTracker;
/** Backward-compat named export: call sites change only the import path, not the call. */
export declare function trackPendingTask(delta: number): void;