5 mistakes I made building an AI Chrome extension — and the readers who caught them

I've been reviewing pull requests for most of my career.

At some point the queue got bad enough that I stopped asking "which PR should I review first?" and started asking "why does this keep happening?"

The answer was that I had no system. Just a flat list of open PRs, a vague sense of urgency, and two hours a day I couldn't account for.

So I built a tool. PR Focus Pro — a Chrome extension that triages GitHub PRs with AI summaries and a hybrid risk score. Free tier included; Pro is a $9.50 one-time payment, no subscription. It's been running in production for 6 weeks. I use it every day.

Here are five decisions I made building it, and what I'd do differently if I started today.