/**
 * knowledge-graph.js — 知识图谱类工具 (2)
 *
 * 10. check_duplicate     候选查重
 * 12. add_graph_edge      手动添加图谱边
 *
 * 注意: discover_relations 已删除。
 * 关系发现由 Agent LLM 直接推理完成，利用通用工具（search_knowledge, query_code_graph 等）。
 */
import type { ToolHandlerContext } from './_shared.js';
export declare const checkDuplicate: {
    name: string;
    description: string;
    parameters: {
        type: string;
        properties: {
            candidate: {
                type: string;
                description: string;
            };
            candidateId: {
                type: string;
                description: string;
            };
            projectRoot: {
                type: string;
                description: string;
            };
            threshold: {
                type: string;
                description: string;
            };
        };
    };
    handler: (params: Record<string, unknown>, ctx: ToolHandlerContext) => Promise<{
        similar: never[];
        message: string;
        hasDuplicate?: undefined;
        highestSimilarity?: undefined;
        _meta?: undefined;
    } | {
        similar: {
            file: string;
            title: string;
            similarity: number;
        }[];
        hasDuplicate: boolean;
        highestSimilarity: number;
        _meta: {
            confidence: string;
            hint: string;
        };
        message?: undefined;
    }>;
};
export declare const addGraphEdge: {
    name: string;
    description: string;
    parameters: {
        type: string;
        properties: {
            fromId: {
                type: string;
                description: string;
            };
            fromType: {
                type: string;
                description: string;
            };
            toId: {
                type: string;
                description: string;
            };
            toType: {
                type: string;
                description: string;
            };
            relation: {
                type: string;
                description: string;
            };
            weight: {
                type: string;
                description: string;
            };
        };
        required: string[];
    };
    handler: (params: Record<string, unknown>, ctx: ToolHandlerContext) => Promise<any>;
};