ci: add GitHub Actions workflow for validate-filepaths

[okwn]

Adds a GitHub Actions workflow that runs Jest tests for the validate-filepaths script on Node 20.

[Copilot]

Pull request overview

Adds CI coverage for the .github/script/validate-filepaths Node/Jest test suite by introducing a dedicated GitHub Actions workflow, along with a new Jest test file intended to validate filepath/date rules.

Changes:

• Added a new GitHub Actions workflow to run npm test for validate-filepaths on Node 20.
• Added a new Jest test file under .github/script/validate-filepaths/__tests__.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/validate-filepaths.yml	Runs the validate-filepaths Jest tests in CI on pushes/PRs targeting master.
.github/script/validate-filepaths/tests/validate.test.js	Adds additional unit tests around year-folder detection and filename date pattern checks.

Comments suppressed due to low confidence (2)

.github/script/validate-filepaths/tests/validate.test.js:67

• The file defines isFileInsideAYearFolder / isFilepathDateValid a second time in a later describe. Duplicating helper implementations increases the chance tests diverge over time; reuse a single helper/import across the file (or import the real functions) to keep tests consistent.

describe("filepath structure validation", () => {
  // Tests for the overall filepath structure (year folder, optional month folder, filename)

  function isFileInsideAYearFolder(filepath) {
    return filepath.match(/^\d{4}/) !== null;
  }

  function isFilepathDateValid(filepath) {
    const filename = filepath.split("/").pop();
    const dateStringInFilename = filename.match(/\d{4}-\d{2}-\d{2}/);
    return dateStringInFilename !== null;
  }

.github/script/validate-filepaths/tests/validate.test.js:91

• This test is labeled as an “incorrect structure with non-matching date in filename”, but it asserts isFilepathDateValid(...) is true. If the intended rule is that folder year/month must match the date in the filename (as isFileInCorrectFolder enforces), update the assertions to reflect the expected failure condition and/or call the actual folder-validation function here.

  test("incorrect structure with non-matching date in filename", () => {
    const invalidPath = "2024/06/2023-06-15-brand.markdown";
    expect(isFileInsideAYearFolder(invalidPath)).toBe(true);
    expect(isFilepathDateValid(invalidPath)).toBe(true);
  });

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