Was user-local in ~/.hermes/skills/. Ported into skills/software-development/
so other Hermes users get it and so the related_skills links from
node-inspect-debugger and python-debugpy resolve in-repo.
Frontmatter upgraded to match repo convention (version/author/license/
metadata.hermes.{tags,related_skills}, description rewritten as "Use when ...").
Body expanded with debugging-tactics section pointing at the two new
debugger skills, and additional common-issues / pitfalls entries.
