Adds LICENSE + pyproject.toml license metadata, and extends CI to
publish the built .ndp to this repo's own Gitea generic package
registry (linked to the repo) alongside the existing pkgs.daubney.dev
upload.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018n5ffHCn5QUjpDtuWTk3fh
