fc356012e6
The single self-hosted act_runner intermittently fails actions/setup-dotnet: a partial extraction sticks in the shared tool-cache (tar: Cannot open: File exists) or the SDK tarball download corrupts. Install into a clean private $HOME/.dotnet via dotnet-install.sh with a rm -rf + retry-once, matching the npm ci and NuGet publish retries already in this pipeline. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>