Worked on the ypech-itescam/POO-2025 repository to establish a scalable foundation for domain-driven development using Java and object-oriented programming principles. Focused on building core domain model scaffolding across multiple areas, including shapes, objects, sum calculators, store, university, and vehicle components, each with constructors, getters, setters, and basic behaviors to support future extensibility. Addressed technical debt by removing outdated legacy modules and introducing safe placeholders, which improved repository hygiene and maintainability. Standardized commit messages and reorganized the folder structure, enabling faster onboarding and smoother domain migrations. Emphasized code deletion and clean architecture to streamline ongoing development and maintenance.