import type { WorkflowToolRunAgentStartedMessage, WorkflowToolRunMessage } from "#execution/tools/workflow/messages.js";
import type { SessionStateCursor } from "#execution/session/state-cursor.js";
import type { RuntimeActionResult } from "#shared/action-types.js";
interface HandlerInput<T> {
    readonly cursor: SessionStateCursor;
    readonly message: T;
}
export declare function handleWorkflowToolRunMessage(input: HandlerInput<WorkflowToolRunMessage>): Promise<RuntimeActionResult | undefined>;
/** Boundary messages in admission order, with consecutive `agent-started` messages grouped. */
type BoundaryBatch = {
    readonly kind: "agent-started";
    readonly messages: WorkflowToolRunAgentStartedMessage[];
} | {
    readonly kind: "message";
    readonly message: WorkflowToolRunMessage;
};
/** Groups consecutive `agent-started` messages so one `emitAgentStartedStep` publishes each group. */
export declare function batchAgentStarts(messages: readonly WorkflowToolRunMessage[]): BoundaryBatch[];
export {};