/**
 * Transient, host-neutral presentation state for subagent spawns that have
 * received an ID but have not yet created a tracker record.
 */
import type { StyleConfig } from "#src/widget-style";
export interface PendingEntry {
    id: string;
    role: string;
    harness: string;
    style?: StyleConfig;
}
export type PendingEntryInput = Omit<PendingEntry, "id">;
export declare class SpawnQueue {
    private entries;
    private listeners;
    addPending(id: string, entry: PendingEntryInput): void;
    removePending(id: string): void;
    getPending(): PendingEntry[];
    subscribe(listener: () => void): () => void;
    private notify;
}
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