/**
 * Starts every pending runtime action for the parked parent session.
 *
 * Each child run starts in task mode, emits a parent `subagent.called`
 * control-plane event, and then runs independently on its own child
 * stream. Records each child's continuation token on the parent
 * session and returns the updated snapshot-bearing state.
 */
import type { RuntimeSubagentResultActionResult } from "#runtime/actions/types.js";
import { type DurableSessionState } from "#execution/durable-session-store.js";
export declare function dispatchRuntimeActionsStep(input: {
    readonly callbackBaseUrl?: string;
    readonly parentWritable: WritableStream<Uint8Array>;
    readonly serializedContext: Record<string, unknown>;
    readonly sessionState: DurableSessionState;
}): Promise<{
    readonly results: readonly RuntimeSubagentResultActionResult[];
    readonly sessionState: DurableSessionState;
}>;