import { type CeConfig } from './types.js';
/**
 * Load ce.json from the project root.
 *
 * - If ce.json doesn't exist, returns defaults (fully backwards compatible).
 * - If ce.json exists but is invalid, throws with a clear error.
 * - Rejects absolute paths for envDir.
 */
export declare function loadConfig(projectRoot: string): CeConfig;
/**
 * Save (merge) fields into ce.json at the project root.
 * Creates the file if it doesn't exist. Preserves existing fields.
 */
export declare function saveConfig(projectRoot: string, updates: Partial<CeConfig>): void;
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