Workshop Artifact Skill: Page-Based Decision Resolution

The /workshop skill (interactive decision artifact) has been updated to a page-self-publish model. Decisions are now resolved by readers clicking option rows directly on the published page, with the page republishing itself via window.claude.self.publish — no separate server-side interaction store is polled. The session loop now detects pending decisions by diffing the live page's DOM state (resolved vs. open call-items) rather than reading from an interactions API.

Additional clarity added to the skill prompt: when building or publishing a workshop, talk about the workshop at the product level — don't narrate internal machinery (publish declarations, renderer wiring, etc.) to the user.