/**
 * Computes a stable SHA-256 hash for media bytes.
 *
 * The browser `SubtleCrypto` implementation is used when available for performance. A CryptoJS fallback
 * keeps the helper working in environments where Web Crypto is unavailable or partially polyfilled.
 *
 * @param data Raw media bytes to hash.
 * @returns Lowercase hexadecimal SHA-256 digest.
 */
export declare function createMediaHash(data: Uint8Array): Promise<string>;