Introduced `Project` and `Task` entities, along with supporting services, repositories, and APIs. Added features for project-based and household-level task management, including creation, listing, updates, and validation. Implemented scheduled notifications for tasks due tomorrow. Updated Flyway migrations, configuration files, and tests to support these functionalities.
Introduced `Household` and `HouseholdMember` entities, services, and repositories, enabling role-based access (`OWNER` and `MEMBER`). Added REST APIs for household creation, member management, and listing. Configured Flyway migrations, updated tests, and included IntelliJ HTTP client script for API testing. Updated `README.md` with feature details, usage instructions, and architecture overview.
