/**
 * Generates the Assets.xcassets directory structure for a widget extension.
 *
 * Creates the minimal required asset catalog structure:
 * - Assets.xcassets/
 *   - Contents.json (required root manifest)
 *
 * @param targetPath - Path to the widget extension target directory
 */
export declare function generateAssetsCatalog(targetPath: string): void;
/**
 * Adds an image to the Assets.xcassets catalog as an imageset.
 *
 * Creates:
 * - {imageName}.imageset/
 *   - {originalFilename}
 *   - Contents.json
 *
 * @param assetsPath - Path to Assets.xcassets directory
 * @param imagePath - Path to the source image file
 */
export declare function addImageToAssetsCatalog(assetsPath: string, imagePath: string): void;