Smoke-test skill that confirms the Mycelium plugin loaded correctly. Returns a deterministic marker string for plugin-shape validation. Not for end-user invocation in normal use.
$npx -y skills add haabe/mycelium --skill pingInstalls into the current project.
Run `npx skills use "https://github.com/haabe/mycelium" --skill "haabe/mycelium/ping"` 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.