/**
 * Common response envelope shared by every gaff-check tool (SPEC §4).
 *
 * Every payload carries provenance (`source`, `source_url`, `licence`),
 * freshness (`data_vintage`, `retrieved_at`) and honesty (`caveats`).
 */
export interface Meta {
    source: string;
    source_url: string;
    licence: string;
    data_vintage: string;
    retrieved_at: string;
    caveats: string[];
}
export interface Envelope<Q, R> {
    query: Q;
    results: R[];
    meta: Meta;
}
export declare function makeEnvelope<Q, R>(query: Q, results: R[], meta: Omit<Meta, "retrieved_at">): Envelope<Q, R>;
/** Caveat copy shared across tools. Treat edits as user-facing copy changes. */
export declare const CAVEATS: {
    readonly GEOCODE_BEST_EFFORT: "Geocoding is best-effort via OpenStreetMap Nominatim. Verify the resolved location matches the property you mean before relying on downstream results.";
    readonly EIRCODE_UNSUPPORTED: "Eircode lookup is proprietary (ECAD licence) and not supported. Some Eircodes resolve via OpenStreetMap where mappers have added them, but this is incidental — prefer a full address or lat/lng.";
    readonly NO_RESULTS_IS_NOT_ABSENCE: "No matching records in the queried dataset does not mean none exist — coverage and update lag vary by source.";
};