Keep the Windows package zipped on the way to the release

download-artifact unpacks a zip it detects, so the Windows package arrived in
dist/ as loose files (Starter.exe, the native dlls, startercfg/) and gh tried
to upload the startercfg directory as a release asset. skip-decompress leaves
the artifact as the file it was uploaded as.

The two packages are also named explicitly instead of globbing dist/*, so a
missing one fails the step rather than quietly publishing half a release.

.github/workflows/dotnet.yml

@@ -128,12 +128,15 @@ jobs:
 
     steps:
       # v8, not v7: the packages are uploaded with archive: false, and only v8
-      # can pull those non-zipped artifacts back down.
+      # can pull those non-zipped artifacts back down. skip-decompress keeps the
+      # Windows .zip a file - unpacked, its contents would end up in the release
+      # instead of the package.
       - name: Collect the packages
         uses: actions/download-artifact@v8
         with:
           path: dist
           merge-multiple: true
+          skip-decompress: true
 
       # Recreated rather than edited, so the tag follows its branch and no asset
       # from an older build is left behind.
@@ -146,7 +149,9 @@ jobs:
           ls -l dist
 
           gh release delete "$RELEASE_TAG" --repo "$GITHUB_REPOSITORY" --yes --cleanup-tag || true
-          gh release create "$RELEASE_TAG" dist/* \
+          gh release create "$RELEASE_TAG" \
+            dist/StarterNG-windows-x64.zip \
+            dist/StarterNG-linux-x64.tar.gz \
             --repo "$GITHUB_REPOSITORY" \
             --target "$GITHUB_SHA" \
             --prerelease \