Create Verify Setup Skill

[JennyPng]

#13784

thoughts

• reliably loads skill and references when prompted "verify my setup" or "verify my setup for [language]" or "what should i install"
• correctness of install instructions is generally correct, but sometimes less reliable, copilot might come up with different instructions that weren't specified in the .md file
• copilot may also vary how it checks that a requirement exists
• sometimes copilot chains many check commands, other times it runs each check individually meaning manual approval is needed for each, slowing down the verification
• correctness of version checking is also less reliable - claude-sonnet-4 claimed 2x that my pytest version 8.3.4 exceeds the minimum required 8.3.5

example output

example of incorrectness - claims pytest exceeds minimum required version when it clearly doesn't