/**
 * Decision Trail Builder — reconstruct the evidence chain behind decisions.
 *
 * Walks events + observations + entity graph backward from a decision
 * to find the context that led to it.
 */
import type { StoragePlugin } from './types.js';
export interface EvidenceItem {
    type: 'file_read' | 'error' | 'search' | 'knowledge' | 'decision' | 'fix';
    content: string;
    timestamp: number;
    source_id?: string;
}
export interface DecisionTrail {
    decision: string;
    date: number;
    evidence_chain: EvidenceItem[];
    alternatives_considered: string[];
    related_entities: string[];
    confidence: number;
}
/**
 * Build a decision trail for a query (file path or topic).
 */
export declare function buildTrail(storage: StoragePlugin, query: string): DecisionTrail | null;
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