A/B test CLAUDE.md instruction changes against eval benchmarks. Capture baselines, test variants, compare results.
$npx -y skills add haabe/mycelium --skill prompt-optimizerInstalls into the current project.
Run `npx skills use "https://github.com/haabe/mycelium" --skill "haabe/mycelium/prompt-optimizer"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/haabe/mycelium" that are relevant to the current task. Run `npx skills add "https://github.com/haabe/mycelium"` and select the relevant skills, then follow their instructions.