File maintain-history.test.ts

test/maintain-history.test.ts:None–None

import { describe, it, expect } from 'vitest';
import { serializeMaintainHistory, deserializeMaintainHistory, mergeRuns, verifyHistoryAudit, historyHead, MAINTAIN_HISTORY_VERSION } from '../src/cli/maintain-history.ts';
import type { MaintainRun } from '../src/cli/maintain-stats.ts';