import { type NativePortableAcceptanceCriterion } from './native-portable-acceptance.js';
import { type NativePortableState, type NativePortableWorkspace } from './native-portable-types.js';
import { NATIVE_CHANGE_SCHEMA, NATIVE_LEGACY_CHANGE_SCHEMA, NATIVE_V2_CHANGE_SCHEMA, type NativeReadableChangeState } from './native-types.js';
export declare const NATIVE_PORTABLE_MIGRATION_TRANSACTION_SCHEMA: "comet.native.portable-migration.v1";
export type NativePortableMigrationTransactionStatus = 'prepared' | 'yaml-committed' | 'legacy-cleanup' | 'committed';
export interface NativePortableMigrationTransaction {
    schema: typeof NATIVE_PORTABLE_MIGRATION_TRANSACTION_SCHEMA;
    id: string;
    change: string;
    fromSchema: typeof NATIVE_LEGACY_CHANGE_SCHEMA | typeof NATIVE_V2_CHANGE_SCHEMA | typeof NATIVE_CHANGE_SCHEMA;
    status: NativePortableMigrationTransactionStatus;
    createdAt: string;
}
export type NativePortableMigrationAction = 'commit-portable-yaml' | 'cleanup-legacy-runtime' | 'commit-transaction' | 'done';
export interface NativePortableMigrationNextStep {
    action: NativePortableMigrationAction;
    fromStatus: NativePortableMigrationTransactionStatus;
    nextStatus: NativePortableMigrationTransactionStatus | null;
}
/**
 * Convert a parsed v1/v2/v3 change into the portable v4 stable boundary.
 *
 * This function intentionally has no Runtime input. Missing trajectory, Run,
 * checkpoint, snapshot, evidence, or per-change Runtime files cannot alter the
 * result. A caller may supply the migration time; otherwise the legacy creation
 * date is used as a deterministic recovery timestamp.
 */
export declare function migrateNativeLegacyStateToPortable(options: {
    state: NativeReadableChangeState;
    acceptance: readonly NativePortableAcceptanceCriterion[];
    workspace: NativePortableWorkspace;
    migratedAt?: string | Date;
}): NativePortableState;
export declare function parseNativePortableMigrationTransaction(value: unknown): NativePortableMigrationTransaction;
/**
 * Return the one replay-safe action for a persisted transaction boundary.
 * Repeated calls with the same journal return the same action and never mutate
 * the journal; the filesystem integration advances status only after the action
 * has reached its stable boundary.
 */
export declare function nextNativePortableMigrationStep(value: NativePortableMigrationTransaction): NativePortableMigrationNextStep;
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