Merge nucleic/lucid-river-toad-6efj into dev

build.ps1

@@ -232,6 +232,16 @@ function Build-Core([hashtable]$sql) {
 function Build-Broker {
     Write-Step 'broker: dotnet test windows\Nucleic.sln'
     & dotnet test (Join-Path $repo 'windows\Nucleic.sln') --nologo | Out-Host
+    if ($LASTEXITCODE -ne 0) { return $LASTEXITCODE }
+
+    # The tests run against FakeWslc, so they never compile Wslc/WslcFacade.cs — the one file
+    # that touches the preview SDK, and the one most likely to break when the pin moves. Build
+    # it too, or the real facade is unguarded on the only machine that can run it.
+    #
+    # Build, not test: exercising it needs a live wslc service, which is M1 (a2)'s job.
+    Write-Step 'broker: dotnet build -p:UseWslc=true (the real Microsoft.WSL.Containers facade)'
+    & dotnet build (Join-Path $repo 'windows\NucleicBroker\NucleicBroker.csproj') `
+        -p:UseWslc=true --nologo | Out-Host
     return $LASTEXITCODE
 }