Skill Creator Agnostic

This skill is a thin overlay on Anthropic's skill-creator. It does not replace the upstream workflow; it adds cross-runner and repo-level guardrails so skill work stays reliable across Codex, Copilot, Opus, and similar agents.

Before benchmarking, read references/benchmark-contract.md.

On Windows or when running from PowerShell, also read references/windows-powershell-benchmarking.md.

Critical