work-item tracks story stage via status/* labels and issue open/close (the
board), not Gitea project-board columns. Gitea's REST API exposes no project
endpoints and its web move-endpoints need a logged-in session; an API token
only authenticates /api/*. Document the label-as-board approach and the
limitation in the README and AGENTS.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>