/**
 * @purpose Locate a subdirectory inside the installed gennady npm package.
 * @param projectRoot Project root directory (contains node_modules/).
 * @param subdir Subdirectory path inside the gennady package (e.g., 'ai/directives').
 * @returns Absolute path or null if the package or subdirectory is not found.
 */
export declare function resolvePackageDir(projectRoot: string, subdir: string): string | null;
/**
 * @purpose Byte-level comparison of two buffers.
 * @param a First buffer.
 * @param b Second buffer.
 * @returns false when buffers are byte-identical, true otherwise. Degrades to true on non-Buffer inputs.
 */
export declare function compareBytes(a: Buffer | undefined | null, b: Buffer | undefined | null): boolean;