/**
 * Extracts browser name and major version from a User-Agent string
 * Returns format like "Chrome/131" or "Firefox/122"
 */
export declare function parseBrowserFromUserAgent(userAgent: string): string;
/**
 * Builds a client identifier from browser info and optional hostname
 * Format: clientName/version (metadata)
 * Example: "overlay/Chrome/131 (example.com)"
 */
export declare function buildClientIdentifier(clientName: string, userAgent?: string, hostname?: string): string;