/**
 * LLM Deduplication Enhancer.
 *
 * Provides a 4th-pass semantic deduplication via LLM analysis.
 * Receives unclaimed facts (not already grouped by the 3-pass algorithm)
 * and asks the LLM to identify semantically equivalent facts.
 *
 * Results are returned as IDuplicateGroup with reason 'llm-semantic'.
 * Graceful fallback: returns empty groups on any LLM failure.
 *
 * Part of Phase 6D: Intelligent LLM-Assisted Deduplication.
 */
import type { ILlmGuard } from '../../domain/interfaces/ILlmGuard';
import type { ILogger } from '../../domain/interfaces/ILogger';
import type { IMemoryItem } from '../../domain/interfaces/types';
import type { IDuplicateGroup } from '../../domain/interfaces/IDeduplicationService';
/**
 * Options for the LLM deduplication enhancer.
 */
export interface ILlmDeduplicationOptions {
    /** Maximum facts to send to the LLM (default: 100) */
    readonly maxFacts?: number;
    /** Batch size for LLM calls (default: 20) */
    readonly batchSize?: number;
}
/**
 * LLM-assisted semantic deduplication enhancer interface.
 */
export interface ILlmDeduplicationEnhancer {
    /**
     * Find semantic duplicates among unclaimed facts using LLM analysis.
     *
     * @param facts - All facts from the group
     * @param existingGroups - Groups already found by the 3-pass algorithm
     * @param options - Batch size and limit options
     * @returns New duplicate groups with reason 'llm-semantic'
     */
    findSemanticDuplicates(facts: readonly IMemoryItem[], existingGroups: readonly IDuplicateGroup[], options?: ILlmDeduplicationOptions): Promise<readonly IDuplicateGroup[]>;
}
/**
 * Create an LLM deduplication enhancer.
 *
 * @param llmGuard - LLM guard for policy-enforced completions
 * @param logger - Optional logger
 */
export declare function createLlmDeduplicationEnhancer(llmGuard: ILlmGuard, logger?: ILogger): ILlmDeduplicationEnhancer;
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