/**
 * Evaluation Metrics -- computes precision, recall, F1, confusion matrix,
 * per-category breakdowns, and latency percentiles.
 *
 * All functions are pure (no side effects, no mutation).
 *
 * @module agent-threat-rules/eval/metrics
 */
export interface SampleResult {
    readonly id: string;
    readonly category: string;
    readonly expectedDetection: boolean;
    readonly actualDetection: boolean;
    readonly matchedRules: readonly string[];
    readonly confidence: number;
    readonly latencyMs: number;
    readonly difficulty: string;
    readonly tier: string;
}
export interface ConfusionMatrix {
    readonly tp: number;
    readonly fp: number;
    readonly tn: number;
    readonly fn: number;
}
export interface ClassMetrics {
    readonly precision: number;
    readonly recall: number;
    readonly f1: number;
    readonly accuracy: number;
    readonly fpRate: number;
    readonly confusion: ConfusionMatrix;
    readonly sampleCount: number;
}
export interface LatencyStats {
    readonly p50: number;
    readonly p95: number;
    readonly p99: number;
    readonly mean: number;
    readonly max: number;
}
export interface CategoryBreakdown {
    readonly category: string;
    readonly metrics: ClassMetrics;
    readonly missedSamples: readonly string[];
    readonly falsePositives: readonly string[];
}
export interface DifficultyBreakdown {
    readonly difficulty: string;
    readonly metrics: ClassMetrics;
}
export interface EvalReport {
    readonly timestamp: string;
    readonly corpusSize: number;
    readonly overall: ClassMetrics;
    readonly latency: LatencyStats;
    readonly byCategory: readonly CategoryBreakdown[];
    readonly byDifficulty: readonly DifficultyBreakdown[];
    readonly missedAttacks: readonly SampleResult[];
    readonly falsePositives: readonly SampleResult[];
}
export declare function computeEvalReport(results: readonly SampleResult[]): EvalReport;
export interface RegressionCheck {
    readonly passed: boolean;
    readonly violations: readonly string[];
}
export interface BaselineThresholds {
    readonly minRecall: number;
    readonly maxFpRate: number;
    readonly minF1: number;
    readonly maxP95LatencyMs: number;
}
export declare function checkRegression(report: EvalReport, thresholds?: BaselineThresholds): RegressionCheck;
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