/**
 * PgVectorProvider - Postgres + pgvector implementation of MemoryProvider
 */
import { MemoryProvider, MemoryChunk, IngestResult, SearchResult, ProjectInfo } from './memory-provider.interface.js';
export declare class PgVectorProvider implements MemoryProvider {
    private pool;
    private embedding;
    private chunking;
    private categoryInference;
    private cache?;
    constructor(databaseUrl?: string, redisUrl?: string);
    /**
     * Generate SHA256 hash of text for deduplication
     */
    private hashContent;
    /**
     * Get or create project by root_path
     */
    private getOrCreateProject;
    /**
     * Ingest text content into vector store
     */
    ingest(project_root: string, path: string, text: string, meta?: Record<string, any>): Promise<IngestResult>;
    /**
     * Search for similar chunks with filters
     *
     * Uses hybrid search combining:
     * - Vector similarity (semantic search) - 60%
     * - BM25 text search (keyword matching) - 30%
     * - Time decay (recency boost) - 10%
     *
     * Plus outcome bonus: +10% for success outcomes
     */
    search(project_root: string | null, query: string, k?: number, global?: boolean, component?: string, category?: string, tags?: string[]): Promise<SearchResult>;
    /**
     * Calculate outcome bonus based on metadata
     * +10% for success outcomes, -5% for failures, 0% otherwise
     */
    private calculateOutcomeBonus;
    /**
     * Delete all chunks for a specific path
     */
    deleteByPath(project_root: string, path: string): Promise<{
        deleted: number;
    }>;
    /**
     * Reindex entire project (delete all + re-ingest)
     */
    reindexProject(project_root: string): Promise<{
        indexed: number;
    }>;
    /**
     * List all indexed projects with stats
     */
    listProjects(): Promise<ProjectInfo[]>;
    /**
     * Record feedback on memory helpfulness
     */
    recordFeedback(chunk_id: number, helpful: boolean, context?: string | null): Promise<void>;
    /**
     * Get top helpful memories across projects
     */
    getTopHelpfulMemories(limit?: number): Promise<MemoryChunk[]>;
    /**
     * Get cache metrics (if cache enabled)
     */
    getCacheMetrics(): import("../services/redis-cache.service.js").CacheMetrics | undefined;
    /**
     * Close database connection pool and Redis connection
     */
    close(): Promise<void>;
}
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