import type { Logger } from "@onenomad/przm-cortex-core";
import type { LLMRouter } from "@onenomad/przm-cortex-llm-core";
import type { EngramClient } from "./engram.js";
export interface PgVectorClientOptions {
    /**
     * Connection mode. 'external' uses node-postgres against the supplied
     * connectionString. 'embedded' spins up PGlite in-process at dataDir
     * — no Docker, no system PG, no port.
     */
    mode: "external" | "embedded";
    /** Required when mode='external'. */
    connectionString?: string;
    /** Required when mode='embedded'. Absolute filesystem path. */
    dataDir?: string;
    table: string;
    embeddingDim: number;
    embedTask: string;
    /**
     * Optional LLM router for embeddings. When supplied, the configured
     * `embedTask` resolves to a provider's embed() (e.g. Ollama, OpenAI).
     * When omitted, Cortex's local Xenova embedder takes over —
     * MiniLM-L6-v2 (384-dim, ~23MB on first run, zero credentials).
     * Local is the default for the standalone-Cortex story; LLM
     * routing is opt-in for higher-quality embeddings on cloud deploys
     * with credentials.
     */
    llmRouter?: LLMRouter;
    /**
     * Optional: restore the PGlite data dir from a tarball at init.
     * Caller already wiped the dataDir; pass-through to PGlite's
     * loadDataDir. Only honored in `embedded` mode.
     */
    loadFromBlob?: Blob;
    logger: Logger;
}
/**
 * Adapts `@onenomad/przm-cortex-memory-pgvector`'s MemoryBackend to the EngramClient shape
 * the rest of the server already consumes. The point: callers don't have to
 * know which backend served the call; switching primary + fallback is a
 * config + factory change, not a tool-level refactor.
 *
 * Embeddings: prefer the LLM router when wired (provider-specific
 * model, often higher quality). Fall back to Cortex's local Xenova
 * embedder otherwise — keeps the standalone deploy story intact
 * (Cortex is fully self-sufficient; no external runtime memory dep).
 */
export declare function createPgVectorClient(opts: PgVectorClientOptions): Promise<EngramClient>;
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