/**
 * Provenance lookup for correlation: resolve a ledger row's recorded
 * `source_event_id` to its connector event-index row.
 *
 * Kept apart from external-correlation.ts so the correlation rules stay a pure,
 * DB-free unit. The lookup is by EXACT primary key - the id is a hash of connector
 * plus source id, so there is nothing to pattern-match or guess, and a value that
 * does not resolve is simply not provenance.
 */
import type { ProvenanceRecord } from './external-correlation.js';
/**
 * Build a lookup over one prepared statement (a correlation pass resolves one row
 * per open task). Malformed metadata yields null metadata rather than throwing: the
 * correlation layer then falls back to the composite id or reports the ref
 * unresolvable, both of which are honest outcomes.
 */
export declare function buildProvenanceLookup(): Promise<(eventIndexId: string) => ProvenanceRecord | null>;
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