- Add symfony/flex so extra.symfony.require "7.4.*" is enforced for
transitive components (dependency-injection had drifted to 8.0.15)
- Group Symfony packages in Renovate and restrict them to ~7.4
- Copy symfony.lock in Docker builds so Flex doesn't re-apply recipes
- Add missing 0.2.1 changelog section and cut 0.2.2
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>