Descriptions written through the API were interpolated raw into the SKILL.md
frontmatter, so a value containing a colon+space made the whole frontmatter
unparseable: every field silently stayed empty, the skill loaded under its
directory name, and a skill-gated MCP server was silently skipped. The same
applied to updates through the meta rewrite, and the shipped scopesentry skill
had a malformed name line all along.
- yamlScalar: plain-safe tokens stay bare, everything else single-quoted
- fsCreateSkill/fsUpdateSkillMeta emit safe values and re-verify the written
file with the real skill parser (name + mcps must survive), rejecting the
write otherwise
- warnBrokenSkills at startup logs skills whose name fell back to the
directory (the signature of broken frontmatter)
- fix skills/scopesentry/SKILL.md name line
Closes#39
