/**
 * v2.15.0 follow-up — G1: slice business review state.
 *
 * The 12 Gaps positioning memory: each slice completion triggers a
 * business review by the user (not a technical review). The user
 * evaluates 4-5 business / product items; technical metrics (coverage,
 * P99, security scan) are AI auto-decided in `peaks-rd`'s fan-out.
 *
 * State persistence: `.peaks/_runtime/<sid>/slice-reviews/<slice-id>.json`.
 *
 *   reviewScore: 1-5 per item; overallOk when avg >= 3 AND no P0 fail
 *   decision: pending | accepted | rejected
 *   rejectionReason: only when decision = rejected
 */
export type SliceReviewDecision = 'pending' | 'accepted' | 'rejected';
export interface SliceReviewItem {
    /** Item identifier (e.g. "business-match", "boundary-cases", "ui-assembly", "mergeable"). */
    readonly id: string;
    /** Human-readable question / check. */
    readonly question: string;
    /** User's score 1-5, or null when not yet reviewed. */
    readonly score: number | null;
    /** Optional user note (especially on rejection). */
    readonly note?: string;
}
export interface SliceReview {
    readonly sliceId: string;
    /** Session id this review belongs to. */
    readonly sessionId: string;
    /** ISO when the review was first opened (or the slice completed). */
    readonly createdAt: string;
    /** ISO when the user last updated (accepted/rejected). */
    readonly updatedAt: string;
    /** Current decision. */
    readonly decision: SliceReviewDecision;
    /** The 4-5 review items. */
    readonly items: readonly SliceReviewItem[];
    /** Optional reason when decision = rejected. */
    readonly rejectionReason?: string;
}
/** The 5 default review items per slice (the 12 Gaps memory checklist). */
export declare const DEFAULT_REVIEW_ITEMS: readonly {
    id: string;
    question: string;
}[];
export declare function buildEmptySliceReview(sliceId: string, sessionId: string, now?: Date): SliceReview;
export declare function getReviewDir(projectRoot: string, sessionId: string): string;
export declare function getReviewPath(projectRoot: string, sessionId: string, sliceId: string): string;
export declare function readSliceReview(projectRoot: string, sessionId: string, sliceId: string): SliceReview | null;
export declare function writeSliceReview(projectRoot: string, review: SliceReview): void;
/** Update a single item's score. Returns the new state. */
export declare function scoreItem(review: SliceReview, itemId: string, score: number, note?: string, now?: Date): SliceReview;
/** Compute the average score across all scored items. */
export declare function averageScore(review: SliceReview): number | null;
/** Decide accept/reject based on the 12 Gaps threshold:
 *   - avg score >= 3 AND no item scored <= 2 → accepted
 *   - any item scored 1 (P0 fail) or avg < 3 → rejected
 */
export declare function deriveDecision(review: SliceReview): SliceReviewDecision;
/** Apply the derived decision to a review (used by `peaks slice accept`). */
export declare function acceptReview(review: SliceReview, now?: Date): SliceReview;
export declare function rejectReview(review: SliceReview, reason: string, now?: Date): SliceReview;
/** Render the review as a user-facing checklist (for `peaks slice review`). */
export interface ReviewChecklistItem {
    readonly id: string;
    readonly question: string;
    readonly currentScore: number | null;
    readonly prompt: string;
}
export declare function renderChecklist(review: SliceReview): readonly ReviewChecklistItem[];