/**
 * Starts or continues every pending runtime action for the parked parent
 * session.
 *
 * The batch is classified into a dispatch plan first (reject / resume /
 * start), then each entry dispatches and emits one
 * parent `subagent.called` control-plane event through a single tail.
 * Every start commits an agent handle (`starting`) before its side effect
 * and confirms it (`running`) once the child reports coordinates, so the
 * returned snapshot-bearing state owns every child it may have created.
 */
import type { RuntimeSubagentResult } from "#runtime/actions/types.js";
import { type DurableSessionState } from "#execution/durable-session-store.js";
export declare function dispatchRuntimeActionsStep(input: {
    readonly callbackBaseUrl?: string;
    /** Internal hook that receives child completion and HITL payloads. */
    readonly parentContinuationToken?: string;
    readonly parentWritable: WritableStream<Uint8Array>;
    readonly serializedContext: Record<string, unknown>;
    readonly sessionState: DurableSessionState;
}): Promise<{
    readonly results: readonly RuntimeSubagentResult[];
    readonly sessionState: DurableSessionState;
}>;