chore: fix yaml frontmatter parse error

[sator-imaging]

No description provided.

[jbetala7]

This is the same generated-frontmatter YAML failure covered by the broader generator fix in #1752, and this PR only fixes one generated output file.

Evidence from this diff: it changes just design-consultation/SKILL.md from an unquoted inline description: to a quoted scalar. That does repair this one file, but it leaves the root cause in scripts/gen-skill-docs.ts, so the next docs generation can emit the same invalid YAML again for any colon-containing trimmed description.

Canonical path looks like #1752 (or #1739): update applyCatalogTrim/the generator to quote inline descriptions, add frontmatter validation/regression coverage, and regenerate all affected SKILL.md files. I would treat this PR as duplicate/incomplete unless it is rebased into the generator-level fix.