import type { DeliverPayload } from "#channel/types.js";
import type { SessionControl, SessionInputQueue, TurnSelection } from "#execution/session/input-queue.js";
import type { SessionInboxReader } from "#execution/session-inbox/inbox.js";
import type { SessionStateCursor } from "#execution/session/state-cursor.js";
import type { WorkflowToolRunMessage } from "#execution/tools/workflow/messages.js";
export type NextTurnInstruction = {
    readonly kind: "workflow";
    readonly message: WorkflowToolRunMessage;
} | {
    readonly kind: "authorization-resume";
    readonly payloads: readonly DeliverPayload[];
} | {
    readonly kind: SessionControl;
} | {
    readonly kind: "closed";
} | {
    readonly kind: "cancel-turn";
} | TurnSelection;
/**
 * Waits for the next input the parked owner must act on. While an
 * authorization challenge is open, its callbacks collect in the queue and
 * resume the challenge once every expected attempt has reported; ordinary
 * deliveries keep starting turns in the meantime. Fully routed descendant
 * deliveries leave nothing for the parent, so the wait continues.
 */
export declare function nextTurnDelivery(input: {
    readonly inbox: SessionInboxReader;
    readonly cursor: SessionStateCursor;
    readonly deferDeliveries?: boolean;
    readonly expectedAttemptIds?: ReadonlySet<string>;
    readonly queue: SessionInputQueue;
}): Promise<NextTurnInstruction>;