import type { SessionEntry } from "@earendil-works/pi-coding-agent";
export declare const COMPACTION_CARRY_ENTRY_TYPE = "pi-fabric-compact-carry";
export declare const MAX_CARRY_ITEMS = 16;
export declare const MAX_CARRY_ITEM_CHARS: number;
export interface CompactionCarryEntryData {
    version: 1;
    items: string[];
}
export interface CompactionCarryUpdate {
    items?: string[];
    add?: string[];
    remove?: string[];
    clear?: boolean;
}
/** Validates a persisted entry; a malformed one fails closed to no carry. */
export declare const decodeCarryEntryData: (data: unknown) => string[] | undefined;
export declare const latestCarryItems: (entries: readonly SessionEntry[]) => string[];
export declare const applyCarryUpdate: (current: readonly string[], update: CompactionCarryUpdate) => string[];
export declare const isCarryUpdate: (update: CompactionCarryUpdate) => boolean;
export declare const sameCarryItems: (left: readonly string[], right: readonly string[]) => boolean;
/** Summary lines for the protected `[Carry Forward]` block. */
export declare const carryRequestLines: (items: readonly string[]) => string[];
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