/**
 * ATR Quality Standard — Maturity Promotion and Demotion
 *
 * Pure functions that decide whether a rule is eligible to promote to a
 * higher maturity level, or should be automatically demoted due to
 * quality regression.
 *
 * See docs/proposals/001-atr-quality-standard-rfc.md §1 for the gate
 * definitions.
 *
 * @module agent-threat-rules/quality/validate-maturity
 */
import type { DemotionDecision, FpReport, Maturity, PromotionDecision, RuleMetadata } from "./types.js";
/**
 * Determine whether a rule is eligible to promote from its current maturity
 * to the next level.
 *
 * @param rule - Rule metadata
 * @param target - Target maturity level
 * @param now - Current timestamp (ISO string) for age calculations
 * @returns Promotion decision with blockers listed
 */
export declare function canPromote(rule: RuleMetadata, target: Maturity, now?: string): PromotionDecision;
/**
 * Determine whether a stable rule should be automatically demoted to
 * experimental due to quality regression.
 *
 * Triggers:
 *  - Wild FP rate exceeds DEMOTION_FP_RATE_THRESHOLD
 *  - DEMOTION_FP_REPORT_COUNT+ unresolved FP reports in the window
 *
 * @param rule - Rule metadata
 * @param recentFpReports - FP reports from the demotion window
 * @param now - Current timestamp (ISO string)
 * @returns Demotion decision
 */
export declare function shouldDemote(rule: RuleMetadata, recentFpReports: readonly FpReport[], now?: string): DemotionDecision;
/**
 * Public accessor for the promotion/demotion thresholds.
 * Useful for documentation and UI that displays the gate policy.
 */
export declare function getMaturityThresholds(): {
    minExperimentalDays: number;
    minWildSamplesForStable: number;
    maxWildFpForStable: number;
    minConfidenceForStable: number;
    demotionFpRateThreshold: number;
    demotionFpReportCount: number;
    demotionWindowDays: number;
};
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