export interface DashboardConfig {
    port?: number;
    dataDir: string;
    refreshIntervalSec?: number;
    title?: string;
}
export interface DashboardMetrics {
    uptime: string;
    totalRuns: number;
    passRate: number;
    errorRate: number;
    avgLatencyMs: number;
    totalCost: number;
    slaStatus: 'healthy' | 'degraded' | 'critical';
    lastUpdated: string;
    recentRuns: DashboardRun[];
}
export interface DashboardRun {
    name: string;
    timestamp: string;
    passed: number;
    failed: number;
    durationMs: number;
    cost: number;
}
/**
 * Scan a reports directory and extract dashboard metrics.
 */
export declare function collectDashboardMetrics(dataDir: string): DashboardMetrics;
/**
 * Format millisecond duration as human-readable uptime.
 */
export declare function formatUptime(ms: number): string;
/**
 * Generate a standalone HTML dashboard page.
 */
export declare function generateDashboardHTML(metrics: DashboardMetrics, config?: Partial<DashboardConfig>): string;
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