import { type DrizzleExecutor } from "../drizzle.js";
import { type MutationHint } from "../chat/types.js";
/**
 * Stops the chat's running agent turn on a reader's request and finishes it durably with whatever the agent had already streamed.
 * Releasing the lease inside the same transaction that publishes the reply is what makes the stop authoritative: the worker still
 * streaming this turn loses its next lease renewal and unwinds, so no second process can keep writing to a turn a person ended.
 * The turn is finished rather than deleted because its partial answer is already visible to everyone in the chat; queued turns for
 * the same chat stay pending, since stopping the current inference does not discard messages a person has already sent.
 */
export declare function agentTurnAbort(executor: DrizzleExecutor, input: {
    agentUserId: string;
    chatId: string;
}): Promise<{
    hint: MutationHint;
    runId?: string;
    sessionId: string;
    userMessageId: string;
} | undefined>;
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