import type { Database as DatabaseType } from 'better-sqlite3';
export declare function emitEvent(db: DatabaseType, kind: string, topicId: number | null, payload?: string): number;
export declare function getEventsAfter(db: DatabaseType, afterId: number, topicId?: number): Array<{
    id: number;
    kind: string;
    topic_id: number | null;
    payload: string | null;
    created_at: string;
}>;
export declare function logUsage(db: DatabaseType, email: string, agentName: string, jobId: number): void;
export declare function countRecentJobs(db: DatabaseType, email: string, windowSeconds?: number): number;
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