This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . The setup I'm building KingxTech , and specifically K-XpertAI — an AI agent that reads, writes, and deletes files in a live project workspace, then hosts the result instantly. Under the hood it's a React 19 + Vite frontend talking to a TypeScript/Express backend on Cloud Run. I'd just shipped a big batch of changes to the workspace UI — a proper code editor, a file tree with GitHub import...