- #76: Add file type validation for product images (Media severity)
- #75: Mask emails in audit logs to prevent information leakage (Media severity)
- #74: Add max value validator to quantity fields (Low severity)
- #73: Add min length validation to password fields (Low severity)
- Add ProductEditForm, EditProfileForm, ChangePasswordForm, ShippingAddressForm
- Add ResetPasswordForm, ResetPasswordPhase2Form
- Update views to use new Django Forms
- Add form validation tests (terms required, password mismatch, etc)
- Update templates to use Django Forms {{ form.as_p }}