/**
 * @purpose Determine programming language by file extension.
 * @consumer review-gen, cat-gen
 */
export declare const getProgrammingLanguage: (ext: string) => string | undefined;
/**
 * @purpose Get system user language (locale) for output localization.
 * @sideEffect Process: call osascript to read system info.
 * @consumer ai-legacy, prompts
 */
export declare const getSysLang: () => string;