import type { MemoryStore } from '../store/index.js';
import type { MemoryPipeline } from './types.js';
export interface DefaultPipelineConfig {
    /** The store both subflows share. */
    readonly store: MemoryStore;
    /** How many recent entries to load per turn. Default 20 (see loadRecent). */
    readonly loadCount?: number;
    /**
     * Token reserve for prompt headers / new user message / safety margin.
     * Default 256.
     */
    readonly reserveTokens?: number;
    /** Minimum memory-token budget before the picker skips injection. Default 100. */
    readonly minimumTokens?: number;
    /**
     * Hard cap on entries selected per turn, independent of tokens. Helps
     * with "lost-in-the-middle" degradation. Default: no cap.
     */
    readonly maxEntries?: number;
    /**
     * Optional tier constraint — e.g. `['hot']` to read only entries
     * marked `hot` by the write side. Combines with `loadCount` (cap
     * AFTER filter).
     */
    readonly tiers?: ReadonlyArray<'hot' | 'warm' | 'cold'>;
    /**
     * Optional tier written entries are tagged with. Matches the `tiers`
     * read filter when both sides want to coordinate tier policy.
     */
    readonly writeTier?: 'hot' | 'warm' | 'cold';
    /**
     * Optional write-side TTL in milliseconds from `now`. Every written
     * entry expires this long after storage. Useful for compliance
     * retention windows.
     */
    readonly writeTtlMs?: number;
    /**
     * Override for the formatter's header text. Omit to use the default
     * "Relevant context from prior conversations..." phrasing.
     */
    readonly formatHeader?: string;
    /** Override for the formatter's footer text. Default: empty. */
    readonly formatFooter?: string;
}
/**
 * Build the default read + write pipelines sharing a single store.
 * Returns two FlowChart subflows ready to be mounted by the wire layer.
 */
export declare function defaultPipeline(config: DefaultPipelineConfig): MemoryPipeline;