/**
 * @fileoverview Update risk scorer for skill version upgrades
 * @module @skillsmith/core/versioning/update-risk
 * @see SMI-skill-version-tracking Wave 2
 *
 * Produces a RiskLevel and Recommendation for a proposed skill update
 * based on change severity, risk score delta, local modification status,
 * trust tier, and changelog availability.
 *
 * Scoring table (additive):
 *   change_type === 'major'      → +30
 *   riskScoreDelta > 0           → +20
 *   hasLocalModifications        → +20
 *   trustTier === 'verified'     → -20
 *   hasChangelog                 → -10
 *
 * Buckets:
 *   low      0–20   → auto-update
 *   medium  21–40   → review-then-update
 *   high    41–60   → manual-review-required
 *   critical 61+    → manual-review-required
 */
export type RiskLevel = 'low' | 'medium' | 'high' | 'critical';
export type Recommendation = 'auto-update' | 'review-then-update' | 'manual-review-required';
export interface UpdateRisk {
    /** Human-readable risk bucket */
    level: RiskLevel;
    /** Raw additive risk score (may be negative — clamped to 0 for level mapping) */
    score: number;
    /** Suggested action for the caller */
    recommendation: Recommendation;
}
/**
 * Compute the update risk for a pending skill upgrade.
 *
 * @param params.changeType         Semantic change type from classifyChange()
 * @param params.riskScoreDelta     newRiskScore - oldRiskScore (optional)
 * @param params.hasLocalModifications  Whether the user has edited the skill
 * @param params.trustTier          Registry trust tier for the skill
 * @param params.hasChangelog       Whether the skill includes a changelog entry
 * @returns UpdateRisk with level, score, and recommendation
 */
export declare function computeUpdateRisk(params: {
    changeType: 'major' | 'minor' | 'patch' | 'unknown';
    riskScoreDelta?: number;
    hasLocalModifications: boolean;
    trustTier: 'verified' | 'community' | 'experimental';
    hasChangelog: boolean;
}): UpdateRisk;
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