import type { GatewayClient } from "../types.js";
/**
 * Handle agent.cancel: abort the current turn for the given session.
 * - Proxy agents: abort in-flight run via registered AbortController.
 * - Local agent: uses pi-coding-agent's session.abort().
 */
export declare function handleAgentCancel(client: GatewayClient, params: {
    sessionId?: string;
    agentId?: string;
}): Promise<{
    status: string;
}>;