import type { HarnessInstallOptions } from "../../../harness";
export interface HarnessInstallCommandArgs extends HarnessInstallOptions {
    harnessName?: string;
}
/**
 * Install a harness CLI via adapters.
 */
export declare function handleHarnessInstall(args: HarnessInstallCommandArgs): Promise<number>;
/**
 * Install a babysitter plugin for a harness.
 *
 * Plugin installation remains harness-specific since it involves babysitter's
 * own plugin packaging. This uses the published per-harness plugin installer.
 */
export declare function handleHarnessInstallPlugin(args: HarnessInstallCommandArgs): Promise<number>;
export declare function formatHarnessInstallError(error: unknown, json: boolean): number;
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