File maintain-stats.test.ts

test/maintain-stats.test.ts:None–None

import { describe, it, expect } from 'vitest';
import { buildMaintainStats, suggestNextScopes, recommendNextScope, weeklyReport, trendByWeek, projectMonthly, forecastTrend } from '../src/cli/maintain-stats.ts';

const R = (scope: string, status: string, filesChanged = 0, when = '1h ago', at?: string) => ({ scope, status, filesChanged, when, at });