/**
 * Apply a subtle pulse effect to text - alternates between white and cyan
 * Much more readable than the old per-character shimmer
 * @param text The text to display
 * @param offset Frame offset for animation
 * @returns Colorized text
 */
export declare function applyShimmer(text: string, offset: number): string;
/**
 * Spinner frames for progress animation
 */
export declare const SPINNER_FRAMES: string[];
/**
 * Get spinner frame for current animation frame
 */
export declare function getSpinner(frame: number): string;
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