/**
 * Curation Service Implementation.
 *
 * Marks facts with curation status (authoritative, draft, deprecated, needs-review)
 * and computes quality scores for ranking facts by reliability.
 *
 * Detection only — delegates mutations to the underlying memory service.
 *
 * Part of Phase 5C: Curation & Compaction.
 */
import type { ICurationService } from '../../domain/interfaces/ICurationService';
import type { IMemoryWriter } from '../../domain/interfaces/IMemoryService';
/**
 * Compute recency bonus for a fact.
 * 1.0 for facts < 7 days old, decays linearly to 0.5 at 90 days.
 *
 * @param createdAt - ISO timestamp or Date of fact creation
 * @param now - Current time (for testing)
 * @returns Recency bonus between 0.5 and 1.0
 */
export declare function computeRecencyBonus(createdAt: string | Date | undefined, now?: Date): number;
/**
 * Create a CurationService.
 *
 * @param memoryWriter - Memory writer for mutations (addFact for tags, expireFact for deprecated)
 */
export declare function createCurationService(memoryWriter: IMemoryWriter): ICurationService;
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