import type { MemoryProfile } from './EntrySchema.js';
export interface SchemaMigration {
    from: number;
    to: number;
    migrate(profile: MemoryProfile): MemoryProfile;
}
export declare const CURRENT_SCHEMA_VERSION = 2;
/**
 * Apply all necessary migrations to bring a profile up to the current version.
 * Returns the migrated profile. If already current, returns as-is.
 */
export declare function migrateProfile(profile: MemoryProfile): MemoryProfile;