- Adds `BLOCKED_DOMAINS` list to reject disposable/invalid email domains. - Enforces TLD length >= 2 chars in `isValidEmail`. - Updates tests to cover new validation rules. Co-authored-by: ragusa-it <196988693+ragusa-it@users.noreply.github.com>
- Adds `BLOCKED_DOMAINS` list to reject disposable/invalid email domains. - Enforces TLD length >= 2 chars in `isValidEmail`. - Updates tests to cover new validation rules. Co-authored-by: ragusa-it <196988693+ragusa-it@users.noreply.github.com>