Added comprehensive unit tests for `UsersController` and `UsersService`, covering CRUD operations, GDPR consent updates, data export, and exception handling. Mocked `JwtAuthGuard` and database operations for all tests.
Added comprehensive unit tests for `UsersController` and `UsersService`, covering CRUD operations, GDPR consent updates, data export, and exception handling. Mocked `JwtAuthGuard` and database operations for all tests.