Model: gpt-5.4-medium
Agent: jarvis
Artifact: playable-9x9-go-board.html

Reproduction:
- Generate a single self-contained HTML file with inline CSS and JavaScript.
- Requirements: 9x9 board, clickable intersections, legal move checking, captures, simple ko, pass, undo, reset, move log, and rough score estimate.
- Keep it dependency-free so it can live directly under static/artifacts/gpt-5.4-medium/ and be served as-is by Hugo.
- The artifacts index at /artifacts/ auto-discovers this file during the Hugo build by scanning static/artifacts/*.