export interface RoiSnapshot {
    hours_saved_total: number;
    hours_saved_this_month: number;
    hours_saved_today: number;
    revenue_attributed_total: number;
    revenue_attributed_this_month: number;
    top_contributors: Array<{
        tool: string;
        executions: number;
        minutes_saved: number;
    }>;
    current_streak_days: number;
    longest_streak_days: number;
    total_actions: number;
}
export declare function computeRoi(tenantId: string): Promise<RoiSnapshot>;
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