import * as lancedb from "@lancedb/lancedb";
import type { FileRecord } from "../types.js";
/**
 * Opens (or creates) a LanceDB database at the given path.
 * Also ensures the _meta table exists with a schema_version row.
 */
export declare function createDatabase(dbPath: string): Promise<lancedb.Connection>;
/**
 * Returns the files table, creating it (empty) if it doesn't exist.
 * Migrates the schema if needed (e.g. adds display_name/digest columns).
 * When wsPath is provided, migrates matching legacy sidecars into DB columns.
 */
export declare function getFilesTable(db: lancedb.Connection, wsPath?: string): Promise<lancedb.Table>;
/**
 * Insert a single file record into the files table.
 */
export declare function insertFileRecord(table: lancedb.Table, record: Record<string, unknown>): Promise<void>;
/**
 * Convert a raw LanceDB row into a FileRecord.
 * Handles Arrow vector arrays -> Float32Array conversion.
 */
export declare function toFileRecord(raw: Record<string, unknown>): FileRecord;
/**
 * Query all non-deleted file records from the table.
 */
export declare function queryFiles(table: lancedb.Table): Promise<FileRecord[]>;
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