simplify-and-refactor-code-isomorphically

CRITICAL E005: Suspicious download URL detected in skill instructions.

• Suspicious download URL detected (high risk: 0.90). Most links are benign placeholders or GitHub repos, but the personal domain jeffreys-skills.md exposes direct install.sh and install.ps1 scripts (and the malformed https://staging/ entry), which are direct executable/script downloads from an untrusted/personal host and therefore represent a high malware risk.