fix: regenerate .openclaw ponytail skill mirror (fixes red CI) (#177)

#82 added the "Web tasks: rung 3 lookup" section to skills/ponytail/SKILL.md
but did not run scripts/build-openclaw-skills.js, so the committed
.openclaw/skills/ponytail/SKILL.md mirror drifted from its source. The two
generator-sync tests in tests/openclaw-skills.test.js have failed on main
since that merge. Regenerated the mirror; suite is green again.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>