Most plugin/han SKILL.md and command files write `description:` as a folded block scalar (`>` / `|`) with the text on the following indented lines. The old single-line frontmatter reader captured the literal `>`, so the slash menu showed garbage/blank descriptions for nearly all of them. frontmatterField now collapses folded blocks (join with spaces) and preserves literal blocks. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>