- Implemented frontend password validation for minimum strength:
- Requires 8+ characters with uppercase, lowercase, digit, and special character.
- Integrated haveibeenpwned (HIBP) k-anonymity API to detect breached passwords.
- Display appropriate error messages for weak or pwned passwords.
- Updated Message component to support "error" and "default" types with styling.
- Cleaned up SignupPage form UI and removed unused refs (e.g., roleElement).
- Created passwordUtils.js to isolate SHA-1 hashing and API call logic.
