export interface WeeklyInsightData {
    total_sessions: number;
    total_cost: number;
    input_tokens: number;
    output_tokens: number;
    cache_read: number;
    cache_hit_pct: number;
    total_loops: number;
    avg_efficiency: number;
    top_tool: string;
    top_tool_cost_pct: number;
    week_start: number;
    week_end: number;
}
export declare function getWeeklyInsightData(days?: number): WeeklyInsightData;
export declare function generateTip(d: WeeklyInsightData): string;
export interface UsageInsightsData {
    days: number;
    total_sessions: number;
    total_cost: number;
    avg_cost_per_session: number;
    cache_savings_usd: number;
    cache_hit_pct: number;
    output_input_ratio: number;
    ratio_label: string;
    avg_efficiency: number;
    efficiency_delta: number;
    total_loops: number;
    project_costs: {
        project: string;
        session_count: number;
        total_cost: number;
    }[];
    hour_ranges: {
        emoji: string;
        from: string;
        to: string;
        count: number;
    }[];
}
export declare function getUsageInsights(days?: number): UsageInsightsData;
export declare function renderInsights(d: UsageInsightsData): string;
export declare function shouldShowInsight(): boolean;
export declare function markInsightShown(): void;
export declare function renderWeeklyInsight(d: WeeklyInsightData): string;
export declare function getPrevWeekInsightData(): WeeklyInsightData;