/**
 * Summarization Prompt Builder.
 *
 * Constructs system and user prompts for LLM-based memory summarization.
 * Formats facts with dates, types, and tags for optimal extraction.
 *
 * Part of Phase 6B: AI-Powered Memory Summarization.
 */
import type { IMemoryItem } from '../../../domain/interfaces/types';
import type { ISummarizationOptions } from '../../../domain/interfaces/ISummarizationService';
/**
 * Built prompt pair for the summarization LLM call.
 */
export interface ISummarizationPrompt {
    readonly system: string;
    readonly user: string;
}
/**
 * Build a summarization prompt from memory facts.
 *
 * @param facts - Memory facts to summarize
 * @param options - Summarization options (style, topic)
 */
export declare function buildSummarizationPrompt(facts: readonly IMemoryItem[], options?: ISummarizationOptions): ISummarizationPrompt;
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