/**
 * Project Profile Management for Babysitter SDK
 *
 * Provides functions to read, write, merge, and render project profiles.
 * Project profiles are stored at `{projectRoot}/.a5c/project-profile.json`
 * with a companion human-readable markdown file alongside.
 *
 * All file operations are synchronous for CJS compatibility.
 * Writes use an atomic temp-file-then-rename strategy to prevent corruption.
 */
import { ProjectProfile } from "./types";
export { mergeProjectProfile } from "./projectProfileMerge";
export { renderProjectProfileMarkdown } from "./projectProfileRender";
/**
 * Returns the directory for storing the project profile.
 *
 * Defaults to `{cwd}/.a5c/` if no project root is specified.
 *
 * @param projectRoot - Absolute path to the project root. Defaults to `process.cwd()`.
 * @returns Absolute path to the project profile directory
 */
export declare function getProjectProfileDir(projectRoot?: string): string;
/**
 * Reads the project profile from disk.
 *
 * Returns `null` if the profile file does not exist or contains
 * malformed JSON. Does not throw on missing or corrupt files.
 *
 * @param projectRoot - Absolute path to the project root. Defaults to `process.cwd()`.
 * @returns The parsed project profile, or `null` if unavailable
 */
export declare function readProjectProfile(projectRoot?: string): ProjectProfile | null;
/**
 * Writes a project profile to disk atomically.
 *
 * Creates the profile directory recursively if it does not exist.
 * Uses a temporary file with rename to prevent partial writes.
 * Also writes a companion markdown summary file for human readability.
 *
 * @param profile - The complete project profile to persist
 * @param projectRoot - Absolute path to the project root. Defaults to `process.cwd()`.
 */
export declare function writeProjectProfile(profile: ProjectProfile, projectRoot?: string): void;
/**
 * Deep-merges partial updates into an existing project profile.
 *
 * Merge strategy:
 * - **Scalars** (strings, numbers, booleans): overwritten by the update value
 * - **Objects**: spread-merged (shallow merge per nested object)
 * - **Arrays with identifiable items** (having `id`, `name`, or similar fields):
 *   deduplicated by that key, with update items taking precedence
 * - **Arrays of primitives**: deduplicated by value
 * - `updatedAt` is set to the current ISO timestamp
 * - `version` is incremented by 1
 *
 * @param existing - The current project profile
 * @param updates - Partial profile fields to merge in
 * @returns A new merged project profile (does not mutate inputs)
 */
/**
 * Creates a new project profile with sensible defaults.
 *
 * @param projectName - Name of the project
 * @returns A complete project profile with default values
 */
export declare function createDefaultProjectProfile(projectName: string): ProjectProfile;
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