upload-artifact@v4 uses a backend API incompatible with Gitea (GHES).
Collapse to a single job that builds both targets sequentially and uploads
directly to a Gitea release via the REST API, removing the need for
artifact passing between jobs entirely.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Builds Linux x64 and Windows x64 binaries on tag pushes (v*) and
publishes them as assets on a Gitea release via the REST API.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>