Self-hosted Windows runner builds the Sciter-UI rustdesk.exe with our
get_cursor() patch for issue #672. Pinned to LLVM 16.0.0 + vcpkg commit
120deac3 to match upstream rustdesk CI exactly. Artifact uploaded to
Gitea releases for OnRamp's Install-RustDeskClient to fetch.
Triggers on push to yowie-master + workflow_dispatch.