Update Jest configuration to include TypeScript support and add new code quality checks workflow; translate comments to Russian and adjust paths in test files.

server/routers/procurement/routes/__tests__/buyProducts.test.js

@@ -1,6 +1,7 @@
 const express = require('express')
 const mongoose = require('mongoose')
 const request = require('supertest')
+const { describe, it, beforeAll, expect } = require('@jest/globals')
 
 // Mock auth middleware
 const mockAuthMiddleware = (req, res, next) => {