/**
 * Header Component
 * Displays CLI branding and session information
 */
import type { StartupInfo } from '../../state/types.js';
interface HeaderProps {
    modelName: string;
    sessionId?: string | undefined;
    hasActiveSession: boolean;
    startupInfo: StartupInfo;
}
/**
 * Pure presentational component for CLI header
 * Automatically adjusts width to terminal size
 */
export declare function Header({ modelName, sessionId, hasActiveSession, startupInfo }: HeaderProps): import("react/jsx-runtime").JSX.Element;
export {};
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