Fix vitest import in file_helpers.test.cjs

[Copilot]

The test file was using require("vitest") which fails in CommonJS modules. Vitest must be imported using ES6 import syntax.

Changes

• Updated file_helpers.test.cjs to use import statement for vitest test functions

Before

const { describe, it, expect, beforeEach, afterEach } = require("vitest");

After

import { describe, it, expect, beforeEach, afterEach } from "vitest";

This aligns with all other test files in the repository.

Original prompt

Reference: https://github.com/githubnext/gh-aw/actions/runs/20694222642/job/59406899228#step:6:1

Fix js tests

FAIL file_helpers.test.cjs [ file_helpers.test.cjs ]

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.