Add auto GitHub release creation on v* tag push

- dotnet.yml: new github-release job triggers on v* tags, extracts
  changelog section for the version, creates GitHub release with NuGet
  packages attached using softprops/action-gh-release@v2
- release.yml: replace deprecated actions/create-release@v1 and
  actions/upload-release-asset@v1 with softprops/action-gh-release@v2

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: rbenzing

.github/workflows/dotnet.yml

@@ -94,3 +94,47 @@ jobs:
       with:
         name: nuget-packages
         path: ./packages/*.nupkg
+
+  github-release:
+    needs: package
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Determine Version
+      id: version
+      run: |
+        VERSION=${GITHUB_REF#refs/tags/v}
+        echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+    - name: Download Package Artifacts
+      uses: actions/download-artifact@v4
+      with:
+        name: nuget-packages
+        path: ./packages
+
+    - name: Extract changelog for this version
+      id: changelog
+      run: |
+        VERSION="${{ steps.version.outputs.version }}"
+        # Extract the section for this version from CHANGELOG.md
+        NOTES=$(awk "/^## \[$VERSION\]/{found=1; next} found && /^## \[/{exit} found{print}" CHANGELOG.md)
+        # Write to a file to preserve newlines
+        echo "$NOTES" > release_notes.md
+        echo "Release notes extracted for v$VERSION"
+
+    - name: Create GitHub Release
+      uses: softprops/action-gh-release@v2
+      with:
+        tag_name: v${{ steps.version.outputs.version }}
+        name: v${{ steps.version.outputs.version }}
+        body_path: release_notes.md
+        draft: false
+        prerelease: ${{ contains(steps.version.outputs.version, '-') }}
+        files: ./packages/*.nupkg

.github/workflows/release.yml

@@ -114,34 +114,20 @@ jobs:
         git push origin "v${{ needs.validate.outputs.version }}"
     
     - name: Create GitHub Release
-      uses: actions/create-release@v1
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      uses: softprops/action-gh-release@v2
       with:
         tag_name: v${{ needs.validate.outputs.version }}
-        release_name: Release v${{ needs.validate.outputs.version }}
+        name: v${{ needs.validate.outputs.version }}
         body: |
           ## Release v${{ needs.validate.outputs.version }}
-          
-          ### Changes
-          - See commit history for detailed changes
-          
-          ### Branch: ${{ github.event.inputs.branch }}
-          ### Type: ${{ github.event.inputs.release_type }}
-          
+
           ### Installation
           ```
           dotnet add package LibEmiddle --version ${{ needs.validate.outputs.version }}
           ```
+
+          ### Branch: ${{ github.event.inputs.branch }}
+          ### Type: ${{ github.event.inputs.release_type }}
         draft: false
         prerelease: ${{ contains(needs.validate.outputs.version, '-') }}
-    
-    - name: Upload packages to release
-      uses: actions/upload-release-asset@v1
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        upload_url: ${{ steps.create_release.outputs.upload_url }}
-        asset_path: ./packages/LibEmiddle.${{ needs.validate.outputs.version }}.nupkg
-        asset_name: LibEmiddle.${{ needs.validate.outputs.version }}.nupkg
-        asset_content_type: application/zip
+        files: ./packages/*.nupkg