Apply RED-GREEN-REFACTOR with PHPUnit 10/11 for Symfony; KernelTestCase/WebTestCase, attributes (#[Test]/#[DataProvider]), Foundry
$npx -y skills add makfly/superpowers-symfony --skill tdd-with-phpunitInstalls into the current project.
Run `npx skills use "https://github.com/makfly/superpowers-symfony" --skill "makfly/superpowers-symfony/tdd-with-phpunit"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/makfly/superpowers-symfony" that are relevant to the current task. Run `npx skills add "https://github.com/makfly/superpowers-symfony"` and select the relevant skills, then follow their instructions.