/**
 * Shared diff formatting utility
 *
 * Provides colored unified diff output for terminal display.
 * Used by both the upload flow (skill conflict resolution) and
 * the switch flow (local change viewing).
 */
/**
 * Format a diff for terminal display with colored +/- lines
 *
 * @param args - The function arguments
 * @param args.existingContent - The original/existing content
 * @param args.localContent - The current/local content
 *
 * @returns Formatted diff string for display in a note
 */
export declare const formatDiffForNote: (args: {
    existingContent: string;
    localContent: string;
}) => string;
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