/**
 * @purpose Injectable dependencies for sync CLI commands.
 * @invariant All fields are optional to allow partial mocking in tests.
 * @invariant unlink and rmdir are no-op by default in the sync command; sync-skills provides real implementations.
 */
export type SyncCmdDeps = {
    /**
     * @purpose Read file from disk.
     * @param path File path.
     * @returns File contents as Buffer.
     */
    readFile?: (path: string) => Buffer;
    /**
     * @purpose Write file to disk.
     * @param path File path.
     * @param data File contents.
     */
    writeFile?: (path: string, data: Buffer) => void;
    /**
     * @purpose Create directory.
     * @param path Directory path.
     * @param [opts] Options.
     */
    mkdir?: (path: string, opts?: {
        recursive: boolean;
    }) => void;
    /**
     * @purpose Get file stats.
     * @param path File path.
     * @returns Stats object with isDirectory and isFile.
     */
    stat?: (path: string) => {
        isDirectory(): boolean;
        isFile(): boolean;
    };
    /**
     * @purpose List directory contents.
     * @param path Directory path.
     * @returns File names.
     */
    readdir?: (path: string) => string[];
    /**
     * @purpose Resolve gennady package subdirectory path.
     * @param projectRoot Project root directory.
     * @param subdir Subdirectory inside the gennady package.
     * @returns Absolute path or null if not found.
     */
    resolvePackageDir?: (projectRoot: string, subdir: string) => string | null;
    /** @purpose Standard output stream. */
    stdout?: NodeJS.WriteStream;
    /** @purpose Standard error stream. */
    stderr?: NodeJS.WriteStream;
    /**
     * @purpose Delete a file (no-op in sync, used by sync-skills).
     * @param path File path.
     */
    unlink?: (path: string) => void;
    /**
     * @purpose Delete a directory recursively (no-op in sync, used by sync-skills).
     * @param path Directory path.
     * @param [options] Options.
     */
    rmdir?: (path: string, options?: {
        recursive: boolean;
    }) => void;
};