/**
 * Referential integrity checks: detect ghost rows referencing deleted entities.
 */
import type { IndexDatabase } from '../../../../db/database.js';
import type { CoverageCheckResult } from './verify-types.js';
/**
 * Check referential integrity: detect ghost rows referencing deleted entities.
 */
export declare function checkReferentialIntegrity(db: IndexDatabase): CoverageCheckResult;
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