/**
 * View 4: Cost Trends.
 *
 * Aggregates metrics across runs by date and displays cost trends,
 * cache savings, cost per file, and error rate trends.
 *
 * @module
 */
import type { RunLog } from '../../ai/types.js';
/**
 * Render cost trends across all runs, aggregated by date.
 *
 * @param logs - Array of run logs (already sorted newest first)
 */
export declare function renderTrends(logs: RunLog[]): void;
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