import { ISignal } from '@lumino/signaling';
import type { IAgent } from './agents';
import type { IAgentRegistry } from './tokens';
/**
 * The concrete {@link IAgentRegistry} the launcher plugin provides on the
 * `IAgentRegistry` token. Holds the active agent list and re-emits `changed`
 * whenever the launcher recomputes it (on a settings change). The launcher
 * is the only writer, so the write side ({@link setAgents}) is kept off the
 * shared token.
 */
export declare class AgentRegistry implements IAgentRegistry {
    get agents(): IAgent[];
    get changed(): ISignal<IAgentRegistry, void>;
    /**
     * Replace the agent list and notify observers. Called by the launcher
     * after merging the user's settings and filtering by availability.
     */
    setAgents(agents: IAgent[]): void;
    private _agents;
    private _changed;
}