The description: field in these four agent files contained unquoted colon-space
sequences (Examples:, Context:, user:, assistant:) that strict YAML parsers
reject with "mapping values are not allowed in this context". Claude Code's
own parser tolerates this, but third-party tooling and linters fail on it.
Wraps each description in a |- literal block scalar with 2-space indentation
so the frontmatter is spec-compliant YAML. Description text and agent body are
byte-for-byte unchanged.
Same approach as #44055 (which covers pr-review-toolkit only).
Refs #40370