/**
 * Full-screen analytics overlay.
 * Opens on Ctrl+Space, shows session stats, closes on any key.
 * Uses the alternate screen buffer so the chat is preserved.
 */
import type { Interface as RLInterface } from 'readline';
export interface TurnRecord {
    userInput: string;
    outTok: number;
    totalDelta: number;
    elapsedMs: number;
    timestamp: Date;
}
export declare function showAnalytics(opts: {
    rl: RLInterface;
    turns: TurnRecord[];
    totalTok: number;
    promptTok: number;
    outTok: number;
    model: string;
    provider: string;
    mode: string;
    effort: string;
    startedAt: Date;
    onClose: () => void;
}): void;
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