Use it now
The comments tool is now a real artifact addon that reads and replies to comment threads instead of matching macOS app bundles.
The comments/artifact tool no longer relies on a hardcoded set of macOS bundle identifiers (Safari, Chrome, Slack, Zoom, Notion, etc.). It's now a proper comments addon tool that can read and reply to comment threads on a published artifact and watch it for republishes, gated behind a gateOpen check.