ci: drop PYPI_TOKEN guard from publish recipe

OIDC publishing sets no PYPI_TOKEN, so the guard would abort the run.
The GITHUB_REF_NAME check still refuses to run outside CI.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: lesnik512

Justfile

@@ -34,7 +34,6 @@ test-branch:
 # Auth via PyPI Trusted Publishing (OIDC); uv publish auto-detects the CI id-token.
 publish:
     @test -n "${GITHUB_REF_NAME:-}" || (echo "GITHUB_REF_NAME is required; refusing to run outside CI" >&2; exit 1)
-    @test -n "${PYPI_TOKEN:-}" || (echo "PYPI_TOKEN is required; refusing to run outside CI" >&2; exit 1)
     rm -rf dist
     uv version $GITHUB_REF_NAME
     uv build