/**
 * Mission Control TUI Header Component
 *
 * Displays:
 * - Title with icon
 * - Run ID
 * - Mission timer (elapsed time from run.started_at)
 * - Compact legend for keyboard navigation
 */
import type { Theme } from "@mariozechner/pi-coding-agent";
import type { Run } from "../state.js";
export interface HeaderProps {
    run: Run | null;
    currentPhase: string;
    agentsReady: boolean;
    skillsReady: boolean;
}
/**
 * Format elapsed time as HH:MM:SS
 */
export declare function formatElapsedTime(startedAt: string): string;
/**
 * Render the header component
 * Returns an array of strings (one per line)
 */
export declare function renderHeader(width: number, props: HeaderProps, theme: Theme): string[];
/**
 * Header component class for dashboard integration
 */
export declare class HeaderComponent {
    private props;
    private cachedWidth?;
    private cachedLines?;
    constructor(run: Run | null, currentPhase: string, agentsReady?: boolean, skillsReady?: boolean);
    update(run: Run | null, currentPhase: string, agentsReady?: boolean, skillsReady?: boolean): void;
    render(width: number, theme: Theme): string[];
    invalidate(): void;
}
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