/**
 * Clipboard utilities
 */
/**
 * Copy text to clipboard
 */
export declare function copyToClipboard(text: string): boolean;
/**
 * Read text from clipboard
 */
export declare function readFromClipboard(): string | null;
/**
 * Read image from clipboard as base64 data URL, or null if no image present.
 */
export declare function readImageFromClipboard(): string | null;
/**
 * Check if clipboard is available
 */
export declare function isClipboardAvailable(): boolean;