/**
 * Gets git blame data for a file, returning a map of line numbers to ISO date strings.
 * Uses author-time (when the change was originally created) rather than committer-time.
 * @param filePath - Absolute path to the file
 * @param repoPath - Path to the git repository root
 * @returns Record<number, string> mapping line numbers (1-indexed) to ISO date strings
 */
export declare const getGitBlame: (filePath: string, repoPath: string) => Promise<Record<number, string>>;