Agent Skills: comment-review

Review markdown or HTML artifacts before fixation (publish/commit/deposit/merge) via /inquire × /sublate × /gap × /contextualize through a channel-first browser preview loop. Markdown renders via marked; HTML serves directly through a Shadow DOM. Each round mode is `apply + scan` (apply queued comments now + scan to surface findings into the next round's sidepanel) or `apply` (apply only). User-invoked via /comment-review.