/**
 * Performance Monitor Agent
 *
 * Monitors database performance, query times, and system metrics.
 */
export interface PerformanceMetrics {
    queryCount: number;
    avgQueryTime: number;
    slowQueries: number;
    databaseSize: number;
    indexUsage: number;
    cacheHitRate: number;
}
export declare class PerformanceMonitorAgent {
    private db;
    private queryTimes;
    private slowQueryThreshold;
    constructor(projectRoot: string);
    /**
     * Track query execution time
     */
    trackQuery(durationMs: number): void;
    /**
     * Get current performance metrics
     */
    getMetrics(): PerformanceMetrics;
    /**
     * Generate performance report
     */
    generateReport(): string;
    /**
     * Suggest optimizations
     */
    suggestOptimizations(): string[];
    close(): void;
}
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