/**
 * Entity relationship graph for iranti.
 *
 * Stores and queries directed relationships between entities in the
 * `entityRelationship` table. Relationships are identified by a 5-tuple
 * `(fromType, fromId, relationshipType, toType, toId)` and are upserted
 * idempotently so callers can register the same edge multiple times safely.
 *
 * Supports bidirectional traversal: `getRelated` returns both outbound and
 * inbound edges labelled with `direction`. `getRelatedDeep` walks the graph
 * up to `depth` hops (default 2), deduplicating visited nodes.
 *
 * Used by:
 *  - `contextual-conflicts.ts` — cross-entity semantic consistency checks
 *  - `agent-registry.ts`       — MEMBER_OF team assignments
 *  - MCP `iranti_related` / `iranti_related_deep` tools
 */
export interface RelationshipInput {
    fromType: string;
    fromId: string;
    relationshipType: string;
    toType: string;
    toId: string;
    createdBy: string;
    properties?: Record<string, unknown>;
}
export interface Relationship {
    fromType: string;
    fromId: string;
    relationshipType: string;
    toType: string;
    toId: string;
    properties: Record<string, unknown>;
    createdAt: Date;
}
export interface RelatedEntity {
    entityType: string;
    entityId: string;
    relationshipType: string;
    direction: 'outbound' | 'inbound';
    properties: Record<string, unknown>;
}
export declare function createRelationship(input: RelationshipInput): Promise<Relationship>;
export declare function getRelated(entityType: string, entityId: string): Promise<RelatedEntity[]>;
export declare function getRelatedDeep(entityType: string, entityId: string, depth?: number): Promise<RelatedEntity[]>;
export declare function deleteRelationship(fromType: string, fromId: string, relationshipType: string, toType: string, toId: string): Promise<void>;
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