User module | Register Feature

### Attributes

- [x] email
- [x] password
- [x] name

### Validation

- [x] validateUser()
- [x] validateEmail()
- [x] validatePassword()
- [x] validateName()

### Vlaidation Test

- [x] testValidateUser()
- [x] testValidateEmail()
- [x] testValidatePassword()
- [x] testValidateName()

### DAO

- [x] createUser()

### Service

- [x] registerUser()

### Test

- [x] testRegisterSuccessful()
- [x] testResisterFail()

### Estimation

6 hrs

### Flow

The issue lists validateUser(), validateEmail(), validatePassword(), validateName(), createUser(), and registerUser(), along with their tests, but provides no file paths or entry points. Check whether these checklist items already exist; the stated done condition is completing the validation, DAO, service, and registration tests, all of which are marked complete.

Written by the indexing model from the issue text.