/**
 * Darwin — Notification System
 *
 * Sends alerts when important evolution events happen.
 * Currently supports Telegram. Non-blocking — failures are logged, not thrown.
 *
 * Env vars: TELEGRAM_BOT_TOKEN, TELEGRAM_ADMIN_CHAT_ID
 */
export interface NotificationConfig {
    telegram?: {
        botToken: string;
        chatId: string;
    };
}
/**
 * Load notification config from environment variables.
 * Returns config with telegram only if both vars are set.
 */
export declare function loadNotificationConfig(): NotificationConfig;
/**
 * Notify that an A/B test completed and a winner was activated.
 */
export declare function notifyABTestComplete(config: NotificationConfig, agentName: string, winner: string, loser: string, compositeWinner: number, compositeLoser: number): Promise<void>;
/**
 * Notify that an A/B test was closed by its wall-clock budget
 * (`evolution.maxTestDays`) without ever reaching `minRuns`.
 *
 * Deliberately NOT routed through {@link notifyABTestComplete}: that message
 * announces a winner and a score delta, and a timeout produced neither. The
 * incumbent kept its slot because nothing beat it, not because it won.
 */
export declare function notifyABTestTimeout(config: NotificationConfig, agentName: string, incumbent: string, challenger: string, runsA: number, runsB: number, minRuns: number, maxTestDays: number): Promise<void>;
/**
 * Notify that a new prompt version was generated and A/B test started.
 */
export declare function notifyEvolutionStarted(config: NotificationConfig, agentName: string, oldVersion: string, newVersion: string, reason: string): Promise<void>;
/**
 * Notify that a rollback happened.
 */
export declare function notifyRollback(config: NotificationConfig, agentName: string, rolledBackTo: string, failures: number): Promise<void>;
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