import type { Session, SessionEvent } from '@deepseek-ai/dsh-session';
export declare const APPROVAL_REVIEWERS: readonly ["user", "auto-review", "none"];
export type ApprovalReviewer = typeof APPROVAL_REVIEWERS[number];
type ApprovalPolicy = 'ask' | 'never';
type SandboxMode = 'workspace-write' | 'danger-full-access';
export interface ApprovalPermissionState {
    approvalPolicy?: ApprovalPolicy;
    approvalPolicyEvent: boolean;
    reviewer?: ApprovalReviewer;
    reviewerEvent: boolean;
    sandboxMode?: SandboxMode;
    sandboxModeEvent: boolean;
}
declare module '@deepseek-ai/dsh-session/types' {
    interface SessionEventMap {
        /** Durable reviewer selection; log-only and never projected into model history. */
        'assistant-policy/approval-reviewer': {
            reviewer: ApprovalReviewer;
        };
    }
}
/** Fold the three durable permission dimensions without inventing missing values. */
export declare function approvalPermissionStateOf(events: readonly SessionEvent[]): ApprovalPermissionState;
/** Stable exact-state fingerprint used to close asynchronous reviewer races. */
export declare function approvalPermissionFingerprint(events: readonly SessionEvent[]): string;
export declare function hasCoherentFullAccess(events: readonly SessionEvent[]): boolean;
export declare function hasCoherentAutoReview(events: readonly SessionEvent[], sessionFormat?: number): boolean;
/** Return the last valid reviewer event, without applying approval-policy compatibility. */
export declare function foldApprovalReviewer(events: readonly SessionEvent[]): ApprovalReviewer | undefined;
/**
 * Resolve a reviewer conservatively against the standard approval policy.
 * Inconsistent intermediate event order never widens authority.
 */
export declare function approvalReviewerOf(events: readonly SessionEvent[], sessionFormat?: number): ApprovalReviewer;
export declare function getApprovalReviewer(session: Pick<Session, 'snapshotEvents' | 'header'>): ApprovalReviewer;
/** Append a validated reviewer transition only when it changes the durable selection. */
export declare function setApprovalReviewer(session: Session, reviewer: ApprovalReviewer): boolean;
export {};
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