Assert that the agent actually read the named skill's SKILL.md during the
run. Scans every message's content (stringifying array/object content via
safeStringify) for a reference to the named skill's
.skills/<name>/SKILL.md (or skills/<name>/SKILL.md) path.
Assert that the agent actually read the named skill's
SKILL.mdduring the run. Scans every message's content (stringifying array/object content viasafeStringify) for a reference to the named skill's.skills/<name>/SKILL.md(orskills/<name>/SKILL.md) path.