When users report broken preview tabs, blank screens, or missing browser previews, this skill knows exactly what to check. It reads the actual registry files at `/data/previews.json` and `/data/preview_history.json` to diagnose what's running versus what crashed. More importantly, it prevents the classic mistake of telling users to visit localhost URLs that they can't actually reach from their browser. It also catches the absolute path gotcha that breaks static assets when served through the reverse proxy. Think of it as the troubleshooting manual for Claude's iframe preview system, with step-by-step debugging that actually works.
npx skills add https://github.com/starchild-ai-agent/official-skills --skill browser-preview