If you’ve ever dusted off an old project and thought, “How did I leave things in such a mess?”, you’re in good company. On my latest Rubber Duck Thursdays stream, I dove back into my OctoArcade Next.js app, only to rediscover a host of UI gremlins. So, we experimented with something that felt like magic: letting GitHub Copilot agent mode, paired with Playwright MCP server, identify and fix UI bugs