/**
 * Deep-clone helpers for continuity records.
 *
 * Extracted from `continuity/index.ts` to satisfy the ≤500 LOC gate (GA-4).
 * The clone functions preserve defensive-copy semantics for the
 * session continuity store (Q6: deep-clone-on-read, deep-clone-on-write).
 *
 * @module task-management/continuity/continuity-clone
 */
import type { CapturedResult, CompactionCheckpointData, DelegationMeta, DelegationPacket, PendingNotification, SessionContinuityRecord, SessionLifecycleState } from "../../shared/types.js";
/**
 * Clone a DelegationMeta envelope (or null).
 *
 * @param meta - Source meta or null.
 * @returns Deep-cloned copy or null.
 */
export declare function cloneDelegationMeta(meta: DelegationMeta | null): DelegationMeta | null;
/**
 * Clone a CompactionCheckpointData value, deep-copying nested tools/warnings.
 *
 * @param cp - Source checkpoint or undefined.
 * @returns Deep-cloned copy or undefined.
 */
export declare function cloneCompactionCheckpoint(cp: CompactionCheckpointData | undefined): CompactionCheckpointData | undefined;
/**
 * Clone a DelegationPacket envelope with deep-copied arrays.
 *
 * @param packet - Source packet or undefined.
 * @returns Deep-cloned copy or undefined.
 */
export declare function cloneDelegationPacket(packet: DelegationPacket | undefined): DelegationPacket | undefined;
/**
 * Clone a SessionLifecycleState envelope.
 *
 * @param state - Source lifecycle state or undefined.
 * @returns Deep-cloned copy or undefined.
 */
export declare function cloneLifecycleState(state: SessionLifecycleState | undefined): SessionLifecycleState | undefined;
/**
 * Clone the pendingNotifications array, deep-copying nested metadata/artifacts/commits.
 *
 * @param notifications - Source array or undefined.
 * @returns Deep-cloned array (empty if input is not an array).
 */
export declare function clonePendingNotifications(notifications: PendingNotification[] | undefined): PendingNotification[];
/**
 * Clone a CapturedResult envelope with deep-copied arrays.
 *
 * @param result - Source result or undefined.
 * @returns Deep-cloned copy or undefined.
 */
export declare function cloneCapturedResult(result: CapturedResult | undefined): CapturedResult | undefined;
/**
 * Clone a SessionContinuityRecord, deep-copying every nested metadata field.
 *
 * This is the canonical defensive-copy entry point used by the public API
 * surface in `continuity/index.ts` for all reads and writes.
 *
 * @param record - Source record.
 * @returns Deep-cloned copy.
 */
export declare function cloneContinuityRecord(record: SessionContinuityRecord): SessionContinuityRecord;
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