/**
 * Sidecar storage for `~/.peaks/config.json` (the slim 2.0 file).
 * The on-disk `~/.peaks/config.json` is strictly `{ version, ocr.llm.* }`.
 * LIVE runtime data (provider configs, proxy, workspace state) lives in
 * dedicated sidecar files under the same `~/.peaks/` directory so the
 * user has one discoverable location for all global peaks state, while
 * `config.json` itself remains a minimal, schema-validatable artifact.
 *
 * Each sidecar has its own `version` field (`"2.0.0"`) for future migrations.
 * All reads/writes use the same hardened-fs primitives as the main
 * config file (symlink / hardlink / HTTPS guards via
 * `validateUserConfigPathForWrite`).
 */
export declare const SIDECAR_SCHEMA_VERSION = "2.0.0";
export declare function providersConfigPath(home?: string): string;
export declare function proxyConfigPath(home?: string): string;
export declare function workspacesConfigPath(home?: string): string;
export declare function sidecarExists(path: string): boolean;
export declare function readSidecarJson<T>(path: string, fallback: T): T;
export declare function writeSidecarJson(path: string, content: unknown): void;
export declare function ensureSidecarVersion(content: {
    version?: unknown;
}): {
    version: string;
};