export type MemoryGraphNodeType = 'memory' | 'project' | 'agent' | 'tag';
export type MemoryGraphEdgeType = 'belongs' | 'wrote' | 'tagged' | 'related';
export interface MemoryGraphNode {
    id: string;
    label: string;
    type: MemoryGraphNodeType;
    group: string;
    score: number;
    size: number;
    pagerank: number;
    degree: number;
    meta?: Record<string, unknown>;
}
export interface MemoryGraphEdge {
    source: string;
    target: string;
    weight: number;
    type: MemoryGraphEdgeType;
}
export interface MemoryGraphStats {
    memories: number;
    projects: number;
    agents: number;
    tags: number;
    edges: number;
    totalConsidered: number;
    droppedNodes: number;
}
export interface MemoryGraphSnapshot {
    nodes: MemoryGraphNode[];
    edges: MemoryGraphEdge[];
    stats: MemoryGraphStats;
    projectScoped: boolean;
    generatedAt: Date;
}
export interface MemoryGraphBuildOptions {
    projectId?: string;
    limit?: number;
    minImportance?: number;
    maxNodes?: number;
    maxRelatedPerNode?: number;
}
export declare class MemoryGraph {
    /** Build a constellation snapshot from the current global brain. */
    build(opts?: MemoryGraphBuildOptions): Promise<MemoryGraphSnapshot>;
    /** Standard PageRank with dangling-node handling. damping 0.85, eps 1e-4. */
    private pageRank;
}
export declare function getMemoryGraph(): MemoryGraph;
export declare function resetMemoryGraphForTests(): void;
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