/**
 * @license
 * Copyright 2025 Vybestack LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * Read-only provider key storage that proxies read operations through
 * the credential proxy Unix socket. Write operations are blocked.
 *
 * @plan PLAN-20250214-CREDPROXY.P12
 * @requirement R9
 * @pseudocode analysis/pseudocode/004-proxy-provider-key-storage.md
 */
import { ProxySocketClient } from './proxy-socket-client.js';
export declare class ProxyProviderKeyStorage {
    private readonly client;
    constructor(client: ProxySocketClient);
    getKey(name: string): Promise<string | null>;
    listKeys(): Promise<string[]>;
    hasKey(name: string): Promise<boolean>;
    saveKey(_name: string, _apiKey: string): Promise<void>;
    deleteKey(_name: string): Promise<boolean>;
}