/**
 * The resolver's reading of an approver's `readRootGrant` (`AskOutcome`) against the card it answered. It only
 * READS: widening a run's read roots is that run's own station's act, and the resolver holds no run.
 */
import type { ReadRootGrantCandidate } from "./types.js";
/** `granted` ⇔ an `allow` whose grant is byte-equal to the request's `readRootCandidate.dir` (the candidate rides
 *  back whole, `covers` included); otherwise `rejected` with ONE reason, the card's `offered` dir when it had one,
 *  and the `requested` grant when it was a string (verbatim host text — a notice bounds it). */
export type ReadRootGrantScreen = {
    readonly verdict: "granted";
    readonly candidate: ReadRootGrantCandidate;
} | {
    readonly verdict: "rejected";
    readonly reason: "on_refusal" | "not_a_string" | "no_candidate" | "mismatch";
    readonly offered?: string;
    readonly requested?: string;
};
/** Screen one grant read; `{}` when the answer carried none. */
export declare function readRootGrantSeat(grant: unknown, candidate: ReadRootGrantCandidate | undefined, allowed: boolean): {
    readRootGrant?: ReadRootGrantScreen;
};
/** An engine-owned copy of a card's offer (one read per member), taken before an approver can touch the object. */
export declare function ownReadRootCandidate(c: ReadRootGrantCandidate | undefined): ReadRootGrantCandidate | undefined;