/**
 * Beam Config — Load, save, and migrate config.json
 */
import type { PhotonConfig } from './types.js';
/** Get config file path based on working directory */
export declare function getConfigFilePath(workingDir: string): string;
/** Migrate old flat config to new nested structure */
export declare function migrateConfig(config: any): PhotonConfig;
/** Load config.json from the working directory */
export declare function loadConfig(workingDir: string): Promise<PhotonConfig>;
/** Save config.json to the working directory */
export declare function saveConfig(config: PhotonConfig, workingDir: string): Promise<void>;
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