feat(person): initial Person domain with entity, model and DTO

- Add PersonEntity in Data layer with Doctrine ORM attributes
- Add PersonModel in Logic layer for business logic
- Add immutable PersonDto in Shared layer
- Configure doctrine/orm dependency in composer.json
- Add Doctrine deprecation triggers to phpunit configuration

.continue/rules/doctrine-repository-best-practices.md

@@ -0,0 +1,7 @@
+---
+globs: '["**/Data/**/*Repository.php"]'
+description: Prevents the common error of using invalid Doctrine ORM attributes
+  in Repository classes
+---
+
+When creating Doctrine repositories, NEVER use #[ORM\EntityManager] as this is not a valid Doctrine mapping attribute and causes runtime errors. Repositories must only be instantiated via Dependency Injection with EntityManagerInterface in their constructor. Valid ORM attributes for Repositories include: none (standard), or optionally #[ORM\HasEntityListeners] if needed. Mapping attributes like #[ORM\Entity], #[ORM\Table], #[ORM\JoinColumn] are ONLY for Entity classes, not Repository classes.