Released version 0.1.13 qa: added phpmd, phpcpd, type coverage and composer-normalize src: replaced assert() with explicit exceptions, typed constants Validator\BankAccount::getBanksList() now declares @return array<int|string, string> instead of array<string, string>. No runtime change, but consumers typing the result as array<string, string> will get new PHPStan errors - bank codes without a leading zero (2010) are int keys, because PHP cannot use a numeric string as an array key.