/**
 * Declarations extracted from `memory-preflight-service.ts` by the b1
 * file-size campaign: the result/ranking types, the token/CJK constants,
 * and the pure selection helpers (token gate, entry renderer, one-line
 * summariser, block item counter). The service re-exports the public type
 * and imports the helpers back, so importers keep the original path.
 */
import type { MemoryIndexEntry } from '../memory/memory-search-service.js';
export interface MemoryPreflightResult {
    available: boolean;
    block?: string;
    /** Back-compat: total items emitted (hot + warm). */
    feedbackListItems?: number;
    cachedItemCount?: number;
    reason?: string;
    truncated?: boolean | undefined;
    droppedCount?: number | undefined;
    hotSelected?: number | undefined;
    warmSelected?: number | undefined;
    bytesEmitted?: number | undefined;
    budgetTruncated?: boolean | undefined;
    timedOut?: boolean | undefined;
}
export interface RankedEntry {
    entry: MemoryIndexEntry;
    score: number;
}
/**
 * Tokens shorter than 4 chars are too promiscuous for literal containment
 * ("add" is a substring of "padding"), so they rank but do not gate.
 */
export declare const MIN_TOKEN_LENGTH = 4;
/**
 * Absolute relevance gate: does the token literally occur in the entry?
 *
 * The fuzzy kernel's score is normalized per batch (best match = 1.0), so
 * it cannot distinguish a strong match from the best of a bad lot — an
 * absolute check is required for the warm gate. CJK titles have no word
 * boundaries, so those tokens fall back to 2-char gram overlap.
 */
export declare function tokenHits(text: string, tokens: string[]): number;
export declare function renderEntry(entry: MemoryIndexEntry): string;
export declare function countItemsInBlock(text: string): number;