MVC 1 - CI Testing for /doc-locale/ja-jp/

To ensure high-quality localized documentation, we need automated testing specifically for our Japanese translations. Currently, we lack a dedicated CI pipeline to validate Japanese content before it's merged upstream.

Goal

Create a CI pipeline that automatically tests Japanese translations in the /doc-locale/ja-jp/ directory. This pipeline will leverage our localization forks environment to validate content before integration with upstream repositories. This CI can be used as a downstream pipeline when translations are merged upstream.

Potential Test Cases

Success Criteria

1. Pipeline successfully detects and reports issues in Japanese translations
2. Tests run automatically when relevant files change
3. Clear reporting that helps translators and reviewers address problems
4. Reduced regression issues in published Japanese documentation

Related Work

1. This builds upon our work to create local directories
2. https://gitlab.com/gitlab-com/localization/docs-site-localization/-/issues/102
3. Will serve as a model for additional language testing pipelines in the future