64bfe80806
Implementation to make all tests pass: Value Objects: - HabitType: BOOLEAN, COUNTER, VALUE with validation - Frequency: DAILY, WEEKLY, MONTHLY with validation Entities: - User: email, password hash, timezone with defaults - Habit: tracking habits with type, frequency, carry-over - HabitEntry: recording habit completions with soft delete Repositories (interfaces): - UserRepository: CRUD operations for users - HabitRepository: CRUD operations for habits - HabitEntryRepository: CRUD operations for entries Shared: - Common error definitions for domain layer All domain tests now pass.