Can Claude Code migrate VanillaJS/HTML/CSS to Preact/Tailwind?

In my last post, I introduced LinkedIn Secret Weapon, the Chrome Extension I built with Claude Code to supercharge my LinkedIn workflow. As I mentioned, the app was built almost entirely with Claude Code – I had no background or knowledge about building browser extensions. I just wanted the tool, and AI built it, and it worked! But now I want to work on expanding it, adding a backend to store the actions a user takes, getting my hands a little more dirty with the code. So, inspired by this ar...