import { type DrizzleExecutor } from "../drizzle.js";
/**
 * Extends the deadline on an agentTurns lease only while its agent remains active and the current worker owns it.
 * The guarded heartbeat aborts deactivated execution and prevents a stale process from prolonging work that has already been reassigned.
 */
export declare function agentTurnRenewLease(executor: DrizzleExecutor, input: {
    agentUserId: string;
    userMessageId: string;
    workerId: string;
}): Promise<boolean>;
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