Initialize MSVC for Windows package builds

scripts/github-workflow-build.test.cjs

@@ -44,3 +44,12 @@ test("build workflow installs bsdtar for Arch pacman packaging", () => {
     "both Linux package jobs must install libarchive-tools for pacman metadata generation",
   );
 });
+
+test("build workflow initializes MSVC before Windows packaging", () => {
+  const msvcStep = /name:\s*Set up MSVC developer command prompt[\s\S]*?if:\s*matrix\.name == 'windows'[\s\S]*?uses:\s*ilammy\/msvc-dev-cmd@v1[\s\S]*?arch:\s*x64/;
+  assert.match(
+    buildWorkflow,
+    msvcStep,
+    "Windows package builds must initialize the MSVC developer prompt so cl.exe is available for the Windows Hello helper",
+  );
+});