Build CI Toolchain Image / Build & push CI image (push) Successful in 2m9s
The build-time smoke test failed the image build even though the toolchain was
healthy: reportgenerator prints its version banner then exits 1 ("No report
files specified"), so it has no clean version probe. Probe the dotnet-tool shim
on PATH instead. dotnet --info confirmed the SDK + .NET 10.0.10 runtimes resolve
correctly on the ffmpeg base (ICU/glibc fine).
Refs #390