The minecraft.html artifact is Fable 5 Max run inside Claude Code — a different harness from the existing Claude Web App entry, so per the model x harness x effort architecture it becomes a new combination (claude-fable-5-code) rather than a variant. The validator now also rejects loose files under outputs/<id>/ that no run declares, which is how this artifact briefly slipped into the repo unregistered. OG count refreshed (11 -> 12 ran). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>