📖 Read the full version with charts and embedded sources on AgentConn → A week ago, the GitHub-trending story on skills was a generic-directory race. Today it is a domain-specialization race. In a single 24-hour window, three vertical skill bundles — scientific , academic , and learning — each landed on GitHub trending or HN with star velocities that put them in the top 12 worldwide. The genre has moved past "ship a .claude folder" and into "ship a .claude folder for this profession ." This is the moment the skill ecosystem stops resembling NPM-style awesome-* lists and starts resembling industry-trade-association toolkits. We've covered the skills directory race and the skill-spam validator wave already on AgentConn. What's new this cycle is that the next layer — vertical bundles — is now visibly being built on top, and three of them landed at once. Here are the three verticals that crossed the trending bar in the May 14 window, what each one ships, and the pattern they all share.…