import type { MemoryTier, MemoryUnit, LoadResult } from "./types.js";
export declare function extractTagsFromString(text: string): string[];
export declare function scoreRelevance(unit: MemoryUnit, taskTags: string[]): number;
/**
 * Apply token budget to a list of candidate units.
 * Hydrates selected units via the provided hydrate function.
 * Returns a LoadResult with selected units + dropped overflow.
 */
export declare function applyBudget(units: MemoryUnit[], budget: number, hydrateUnit: (unit: MemoryUnit) => MemoryUnit, markLoaded: (key: string) => void, logFn: (msg: string) => void): LoadResult;
/**
 * Rank candidates by relevance to a task string, filter by threshold,
 * apply budget, and return the LoadResult.
 */
export declare function rankAndLoad(task: string, tier: MemoryTier, matchThreshold: number, candidates: MemoryUnit[], budget: number, hydrateUnit: (unit: MemoryUnit) => MemoryUnit, markLoaded: (key: string) => void, logFn: (msg: string) => void): LoadResult;
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