The Workbook X-Ray recording + Free Skill

Hi Reader, Saturday, I built a Tableau Workbook X-Ray live - an extension that reads any workbook and shows what's inside. The demo workbook had 423 fields. 373 were unused. The skill that made that possible is now free. It's the SKILL.md I use in every live build, the one that keeps Claude Code from repeating every classic extension error: the manifest gotchas, the hosting traps, the "why won't it load." Drop it into Claude Code, describe the extension you want, and it builds with all of...