import type { PrincipleStatus } from './types/principle-enums.js';
export type { PrincipleStatus };
export type PruningRiskLevel = 'none' | 'watch' | 'review';
export interface PrinciplePruningSignal {
    principleId: string;
    status: PrincipleStatus;
    createdAt: string;
    updatedAt: string;
    derivedCandidateIds: string[];
    derivedPainCount: number;
    matchedCandidateCount: number;
    recentCandidateCount: number;
    orphanCandidateCount: number;
    ageDays: number;
    riskLevel: PruningRiskLevel;
    reasons: string[];
}
export interface PruningHealthSummary {
    totalPrinciples: number;
    byStatus: Record<string, number>;
    watchCount: number;
    reviewCount: number;
    orphanDerivedCandidateCount: number;
    averageAgeDays: number;
    activeL1Count: number;
    l1Cap: number;
    generatedAt: string;
}
export interface OrphanDerivedCandidate {
    candidateId: string;
    principleId: string;
    reason: string;
    sourceRef?: string;
    status?: string;
}
export interface OrphanDetectionResult {
    candidates: OrphanDerivedCandidate[];
    dbReadable: boolean;
}
export interface PruningReadModelOptions {
    workspaceDir: string;
    /** Override days threshold for 'watch' risk level (default: 30) */
    watchThresholdDays?: number;
    /** Override days threshold for 'review' risk level (default: 90) */
    reviewThresholdDays?: number;
    /** Override L1 hard cap for health summary (default: 12) */
    l1Cap?: number;
}
export declare class PruningReadModel {
    private readonly workspaceDir;
    private readonly watchThresholdDays;
    private readonly reviewThresholdDays;
    private readonly l1Cap;
    constructor(opts: PruningReadModelOptions);
    /**
     * Build per-principle signals for the current workspace ledger.
     *
     * Reads:
     *   - .state/principle_training_state.json (ledger)
     *   - .pd/state.db principle_candidates (candidate table)
     *
     * Returns one signal per ledger principle entry.
     */
    getPrincipleSignals(): PrinciplePruningSignal[];
    /**
     * Build aggregate pruning health summary.
     * Reuses getPrincipleSignals() to avoid duplicate DB queries.
     */
    getHealthSummary(): PruningHealthSummary;
    getOrphanDerivedCandidates(): OrphanDetectionResult;
}
export interface RemovedOrphanReference {
    principleId: string;
    removedIds: string[];
}
export declare function removeOrphanReferencesFromLedger(stateDir: string, orphanIdsByPrinciple: Map<string, Set<string>>): RemovedOrphanReference[];
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