import { CausalLink, CausalChain } from '../types.js';
import { GlobalBrain } from './global-brain.js';
export declare class CausalChains {
    private brain;
    private links;
    private byEffect;
    private byCause;
    private initialized;
    constructor(brain?: GlobalBrain);
    init(): Promise<void>;
    /** Record that `effectId` was caused by `causeId`. */
    link(effectId: string, causeId: string, rationale?: string, strength?: number): Promise<CausalLink>;
    /** Walk back from an effect to trace all ancestor causes. */
    trace(effectId: string, opts?: {
        maxDepth?: number;
    }): Promise<CausalChain>;
    /** Walk forward from a cause to find all effects it influenced. */
    influence(causeId: string, opts?: {
        maxDepth?: number;
    }): Promise<CausalChain>;
    /** Simple stats for dashboards. */
    stats(): {
        totalLinks: number;
        effects: number;
        causes: number;
    };
    /** Remove a single link. */
    unlink(linkId: string): Promise<boolean>;
    private index;
    private rebuildIndexes;
    private nodeFromMemoryId;
    private renderDot;
    private persist;
}
export declare function getCausalChains(): CausalChains;
export declare function resetCausalChainsForTests(): void;
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