- Add updateProfile and updatePassword server actions
- Add getUserProfile function with sensitive data protection
- Create ProfileForm component for name and email updates
- Create PasswordChangeForm component with current password verification
- Create profile page at /profile with all profile management features
- Add profile and invitations navigation links to main page
- Implement email uniqueness validation
- Implement password hashing on password change
Requirements: 7.1, 7.2, 7.3, 7.4, 7.5
