/**
 * Transcript Enricher Interface.
 *
 * Defines the contract for LLM-powered extraction of structured facts
 * from session transcripts. Extracts decisions, learnings, blockers,
 * tasks, preferences, conventions, and gotchas with confidence levels.
 *
 * Part of Phase 6C: Enhanced Session Transcript Extraction.
 */
import type { ILlmUsage } from './ILlmService';
import type { ConfidenceLevel } from './types/IMemoryQuality';
import type { IWorkSummary } from './IWorkSummary';
/**
 * Fact type extracted from a session transcript.
 */
export type ExtractedFactType = 'decision' | 'learning' | 'blocker' | 'task' | 'preference' | 'convention' | 'gotcha';
/**
 * All valid extracted fact types.
 */
export declare const EXTRACTED_FACT_TYPE_VALUES: readonly ExtractedFactType[];
/**
 * Type guard for ExtractedFactType.
 */
export declare function isValidExtractedFactType(value: string): value is ExtractedFactType;
/**
 * A structured fact extracted by the LLM from a transcript.
 */
export interface IExtractedFact {
    readonly text: string;
    readonly type: ExtractedFactType;
    readonly confidence: ConfidenceLevel;
    readonly tags: readonly string[];
    readonly rationale?: string;
}
/**
 * Result of enriching a session transcript with LLM extraction.
 */
export interface IEnrichmentResult {
    readonly facts: readonly IExtractedFact[];
    readonly summary: string;
    readonly usage: ILlmUsage;
}
/**
 * Options for transcript enrichment.
 */
export interface IEnrichmentOptions {
    /** Extraction depth: 'fast' extracts top 5 facts, 'thorough' up to 15. Default: 'fast'. */
    readonly depth?: 'fast' | 'thorough';
    /** Restrict extraction to specific fact types. Default: all types. */
    readonly extractTypes?: readonly ExtractedFactType[];
    /** Maximum transcript length sent to LLM (chars). Default: 4000. */
    readonly maxSnippetLength?: number;
}
/**
 * Service for enriching session transcripts with LLM-extracted facts.
 */
export interface ITranscriptEnricher {
    /**
     * Enrich a session transcript with structured facts via LLM analysis.
     *
     * @param workSummary - Parsed work summary from the session
     * @param transcriptSnippet - Raw transcript text snippet
     * @param options - Enrichment options
     * @returns Extracted facts, summary, and usage stats
     */
    enrich(workSummary: IWorkSummary, transcriptSnippet: string, options?: IEnrichmentOptions): Promise<IEnrichmentResult>;
}
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