import type { OpenCodeClient } from "../../shared/session-api.js";
import type { ChildSessionStartParams, ChildSessionStartResult } from "./coordinator.js";
/**
 * Starts a delegated OpenCode child session through the SDK session API.
 *
 * @param client - OpenCode SDK client injected by the plugin runtime.
 * @returns Starter dependency used by `DelegationCoordinator` after preflight succeeds.
 *
 * @example
 * ```typescript
 * const starter = createSdkChildSessionStarter(client)
 * await starter.start({ parentSessionId, agent, prompt, delegationId, validatedAgent, workingDirectory })
 * ```
 */
export declare function createSdkChildSessionStarter(client: OpenCodeClient): {
    start(params: ChildSessionStartParams): Promise<ChildSessionStartResult>;
};
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