check-skill-names

Verify that skill name fields in SKILL.md frontmatter match their directory names (category-skillname format). Use when (1) before creating a pull request or release to ensure naming consistency, (2) after adding new skills to verify the name field was set correctly, (3) after renaming skill directories to update frontmatter accordingly, (4) as part of comprehensive repository validation alongside check-skill-refs and check-skill-counts, (5) when debugging skill discovery issues that might stem from name mismatches.