import { type DrizzleExecutor } from "../drizzle.js";
/**
 * Claims the oldest eligible active agent's agentTurns item for one worker and records a bounded ownership lease.
 * The active identity query and conditional state transition prevent deactivated work from resuming while serializing competing workers to at most one executor.
 */
export declare function agentTurnTakeNext(executor: DrizzleExecutor, chatId: string, workerId: string): Promise<{
    agentUserId: string;
    actorUserId: string;
    baselineMessageCount?: number;
    chatId: string;
    lastSessionEventId?: string;
    leaseExpiresAt?: string;
    runId?: string;
    sessionId: string;
    startedAt: string;
    streamCommittedText: string;
    text: string;
    userMessageId: string;
    workerId: string;
} | undefined>;
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