- Enhanced PasswordValidator with additional security checks:
* Maximum length validation (128 characters)
* Common password detection (password, 123456, qwerty, etc.)
* Repetitive pattern detection (aaaa, 1111, etc.)
* Sequential pattern detection (1234, abcd, qwerty, etc.)
- Added ValidatePasswordChange method to ensure new password is
sufficiently different from old password (similarity check)
- Updated PasswordService to use enhanced validator consistently
- Replaced utils.ValidatePasswordStrength with validators.PasswordValidator
- All password operations now use the same comprehensive validation rules
Phase: PHASE-4
Priority: P1
Progress: 8/267 (3.0%)
