import type { DeliveryConfirmation, HookInput, InjectionsResponse } from './types.js';
export declare const MAX_DELIVERY_CONFIRMATIONS_PER_REQUEST = 8;
export interface PendingDelivery {
    deliveryRef: string;
    emittedHashes: string[];
    rendererVersion: string;
    transcriptByteOffset: number;
    sessionSalt: string;
}
export declare function pendingDeliveryPath(sessionId: string): string;
/**
 * A named file inside this session's private state directory — the same
 * directory pending.jsonl and session.salt live in, so sweepStaleSessionDirs
 * cleans it up with the rest of the session's litter.
 */
export declare function sessionStateFilePath(sessionId: string, fileName: string): string;
/** Generate one random salt per host session without any awaited work. */
export declare function getOrCreateSessionSalt(sessionId: string): string;
export declare function ensurePrivateDirectory(path: string): boolean;
/** One bounded O_APPEND write. Any failure is silent and never blocks emission. */
export declare function appendPendingDelivery(sessionId: string, record: PendingDelivery): boolean;
/** Parse only bytes appended after each stored transcript offset. */
export declare function collectDeliveryConfirmations(input: HookInput): DeliveryConfirmation[];
/** Remove accepted references after the existing request returns. */
export declare function acknowledgeDeliveryConfirmations(sessionId: string, accepted: string[]): void;
/** Wall-clock floor for files left behind when the host misses lifecycle cleanup. */
export declare const ORPHAN_SESSION_MS: number;
/**
 * Remove abandoned session directories after lifecycle cleanup failed to run.
 * This wall clock limits orphaned files only. It does not expire a live proof.
 * Runs once per SessionStart and checks the directory plus each direct child,
 * because rewriting a child does not refresh its directory mtime on Linux.
 */
export declare function sweepStaleSessionDirs(now?: number): number;
/** Remove one session's private proof state on clean SessionEnd. */
export declare function clearPendingDeliveries(sessionId: string): void;
/** Record the reflex fragments that survived final additionalContext composition. */
export declare function captureReflexDeliveries(input: HookInput, additionalContext: string, response: InjectionsResponse | null): boolean;