Function updateCode

packages/shared/src/components/fields/CodeField.tsx:32–43

(value: string, index: number)

  );

  const updateCode = (value: string, index: number) => {
    const newCode = [...code];
    newCode[index] = value;
    setCode(newCode);
    onChange?.(newCode.join(''));

    const finalCode = newCode.join('');

    if (finalCode.length === length && index === length - 1) {
      onSubmit(finalCode);
    }
  };

  const onSlice = (text: string) => {
    const sliced = text.slice(0, length);