BREAKING CHANGES:
- Minimum PHP version is now 8.1
- Requires doctrine/dbal ^4.0
- Requires doctrine/orm ^3.0

Changes:
- Update composer.json dependencies for modern stack
- Replace deprecated EntityManager::transactional() with wrapInTransaction()
- Rewrite DbalPersistedConnection for DBAL 4.x compatibility
- Update CI workflow for PHP 8.1-8.4

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>