Section508Coordinators/Dev-Auto-Pipeline-Ex ? reverse-engineered prompt

Build me a monorepo example that shows how to add automated accessibility testing into a real CI CD workflow for a React app.

I want the project to include a small React based UI, shared styles, and examples of running accessibility checks with axe, HTML Code Sniffer, and pa11y ci during both unit and integration tests. It should also show how this can fit into common pipeline setups like Jenkins, Azure Pipelines, AWS CodePipeline, GitHub Actions, and similar tools, so I can see how the same idea works in different environments.

Please make it feel like a practical demo I can run locally and also use as a reference for a team that wants to start following Section 508 style accessibility practices in the build process. Include clear setup instructions, scripts to run the tests, and enough example code that I can understand how the accessibility checks are wired into the pipeline. If you need to, look up current docs online for anything that has changed.