[Feature Request] Artifact version history retrieval and URL versioning support

Bug Description
Hi guys, great product, I am using every-day-bases, thank you. Would be great to be able to fetch for older artifact versions, i am stuck in the last version from the prompt, the url is the same even if i select to share the artifact by versioning in the UI. So if the agent update the artifact version I just loose access to the last versions information.

Environment Info

• Platform: linux
• Terminal: vscode
• Version: 2.1.216
• Feedback ID: c7b9487f-4155-4a97-806a-c92a0e78d2f6

Agent Response

I don't have a tool to enumerate an artifact's version history — Artifact with action: "list" only lists distinct artifacts (one row each, current state), and WebFetch only returns the current published content. There's no version-history endpoint exposed to me.

The version picker you'd see in the claude.ai UI (mentioned via the label field when publishing) isn't something I can query — that's client-side only. If you need to compare against an older version, you'd have to pull it up in the browser yourself and paste me the content, or tell me what changed and I can help from there.