The changes in the PR look good overall, but there are a few areas where we can make improvements.

1. In the Jazzicon component, the useEffect hook is missing dependencies. This could lead to unexpected behavior. The result variable should be included in the dependency array to ensure the effect runs whenever result changes.

useEffect(() => {
  if (!divRef || !divRef.current) return null;

  divRef.current.appendChild(result);
}, [result]); // added result to the dependency array

2. In the CSS file, it's a good practice to always have a newline at the end of the file. This is a common convention that helps prevent any concatenation bugs that might occur.

.user-reply>div:first-of-type {
  border: 2px solid white;
}
\n // added newline

3. The Math.floor(100000 + Math.random() * 900000) line is used to generate a random number between 100000 and 1000000. This is a bit hard to understand at first glance. Consider creating a helper function for this to improve readability.

function getRandomNumber(min, max) {
  return Math.floor(min + Math.random() * (max - min));
}

const seed = user?.uid
  ? toPseudoRandomInteger(user.uid)
  : getRandomNumber(100000, 1000000);