import type { CanonicalState, DerivedState, ReviewGateExpeditionState } from "../types/index.js";
import type { GatePolicy, Reviewer, ReviewDecisionType, AcceptanceDecisionType, RefinedIntent } from "./review-gates.js";
import type { EvaluationResult } from "./proposal-evaluation/types.js";
export type ReviewGateEngineEvent = {
    type: string;
    payload: Record<string, unknown>;
};
export type ReviewGateEngineResult = {
    state: ReviewGateExpeditionState;
    events: ReviewGateEngineEvent[];
};
/** Ensure a review-gate expedition record exists. */
export declare function ensureReviewGateExpedition(derivedState: DerivedState, expeditionId: string): ReviewGateExpeditionState;
/** Approve a Refined Intent and bind it to the expedition. */
export declare function engineApproveRefinedIntent(current: ReviewGateExpeditionState | undefined, expeditionId: string, refinedIntentInput: Omit<RefinedIntent, "id" | "version" | "approvedAt">, reviewer: Reviewer, policy: GatePolicy): ReviewGateEngineResult;
/** Mark implementation complete and open a Review Gate.
 *
 * Supports both the first review (expedition is `proposed`) and re-review
 * after a revision cycle (expedition is `executing`).
 */
export declare function engineOpenReviewGate(current: ReviewGateExpeditionState | undefined, expeditionId: string, implementationReference: string, policy: GatePolicy): ReviewGateEngineResult;
/** Resolve a Review Gate with a decision. */
export declare function engineResolveReviewGate(current: ReviewGateExpeditionState, decisionType: ReviewDecisionType, reviewer: Reviewer, reason: string, evidence?: string[], affectedAssets?: string[], requiredChanges?: string[], evaluation?: EvaluationResult): ReviewGateEngineResult;
/** Begin a revision after a Review Gate requested changes. */
export declare function engineRequestRevision(current: ReviewGateExpeditionState, gateId: string, reviewer: Reviewer, reason: string, evidence?: string[]): ReviewGateEngineResult;
/** Open the Acceptance Gate after a successful Review Gate. */
export declare function engineOpenAcceptanceGate(current: ReviewGateExpeditionState, policy: GatePolicy): ReviewGateEngineResult;
/** Resolve the Acceptance Gate. */
export declare function engineResolveAcceptanceGate(current: ReviewGateExpeditionState, decisionType: AcceptanceDecisionType, reviewer: Reviewer, reason: string, evidence?: string[], evaluation?: EvaluationResult): ReviewGateEngineResult;
/** Close an accepted expedition. */
export declare function engineCloseExpedition(current: ReviewGateExpeditionState): ReviewGateEngineResult;
/** Fulfill a condition on a review gate. */
export declare function engineFulfillCondition(current: ReviewGateExpeditionState, gateId: string, conditionId: string, fulfilledBy: string): ReviewGateEngineResult;
/** Check whether an upstream expedition blocks downstream work. */
export declare function isBlockedByUpstreamGate(state: CanonicalState, derivedState: DerivedState, expeditionId: string): boolean;