export declare function initEvents(): Promise<void>;
export declare function shutdownEvents(): Promise<void>;
export declare function publishEvent(suffix: string, payload: object): void;
export declare const events: {
    searchRequested(p: {
        query: string;
        profile?: string;
        expand?: boolean;
        time_range?: string;
        num_results: number;
    }): void;
    searchCompleted(p: {
        result_count: number;
        latency_ms: number;
        sources?: string[];
        rerank_applied: boolean;
    }): void;
    fetchRequested(p: {
        url: string;
        max_chars: number;
        prefer_fit?: boolean;
    }): void;
    fetchTierMiss(p: {
        url: string;
        tier: string;
        reason: string;
        latency_ms: number;
    }): void;
    fetchTierSkipped(p: {
        url: string;
        tier: string;
        reason: string;
    }): void;
    fetchCompleted(p: {
        url: string;
        tier_served: string;
        title: string;
        text_len: number;
        latency_ms: number;
        source?: string;
    }): void;
    cacheHit(p: {
        key_type: string;
        namespace: string;
        age_seconds?: number;
    }): void;
    cacheMiss(p: {
        key_type: string;
        namespace: string;
    }): void;
    crawlRequested(p: {
        url: string;
        max_pages: number;
        same_domain_only: boolean;
    }): void;
    crawlCompleted(p: {
        url: string;
        strategy: string;
        page_count: number;
        latency_ms: number;
        cached: boolean;
    }): void;
    error(p: {
        stage: string;
        url?: string;
        error_type: string;
        message: string;
    }): void;
};