Add release notes generation to GitHub Actions workflow

Author: kelltom

.github/workflows/release.yml

@@ -18,6 +18,8 @@ jobs:
     steps:
     - name: Checkout code
       uses: actions/checkout@v4
+      with:
+        fetch-depth: 0  # Fetch all history for changelog generation
 
     - name: Set up Python
       uses: actions/setup-python@v5
@@ -45,6 +47,34 @@ jobs:
         echo "VERSION=$version" >> $env:GITHUB_OUTPUT
         echo "Version: $version"
     
+    - name: Generate release notes
+      id: release_notes
+      run: |
+        $tag = "v${{ steps.version.outputs.VERSION }}"
+        
+        # Get the previous tag
+        $previousTag = git describe --tags --abbrev=0 HEAD^ 2>$null
+        
+        if ($previousTag) {
+          # Generate commit log between tags
+          $commits = git log "$previousTag..HEAD" --pretty=format:"- %s (%h)" --no-merges
+        } else {
+          # First release - show recent commits
+          $commits = git log -10 --pretty=format:"- %s (%h)" --no-merges
+        }
+        
+        $releaseNotes = @"
+        ## What's Changed
+        
+        $commits
+        
+        **Full Changelog**: https://github.com/${{ github.repository }}/compare/$previousTag...$tag
+        "@ -replace "`r`n", "`n"
+        
+        # Escape for GitHub Actions
+        $releaseNotes = $releaseNotes -replace '%', '%25' -replace "`n", '%0A' -replace "`r", '%0D'
+        echo "NOTES=$releaseNotes" >> $env:GITHUB_OUTPUT
+    
     - name: Create version info file
       run: |
         @"
@@ -82,4 +112,4 @@ jobs:
         dotnet tool install -g vpk
         vpk download github --repoUrl https://github.com/${{ github.repository }} --token ${{ secrets.GITHUB_TOKEN }}
         vpk pack --packId ChiselPDF --packVersion ${{ steps.version.outputs.VERSION }} --packDir .\dist\ChiselPDF --mainExe ChiselPDF.exe
-        vpk upload github --repoUrl https://github.com/${{ github.repository }} --publish --releaseName "ChiselPDF ${{ steps.version.outputs.VERSION }}" --tag v${{ steps.version.outputs.VERSION }} --token ${{ secrets.GITHUB_TOKEN }}
+        vpk upload github --repoUrl https://github.com/${{ github.repository }} --publish --releaseName "ChiselPDF ${{ steps.version.outputs.VERSION }}" --tag v${{ steps.version.outputs.VERSION }} --releaseNotes "${{ steps.release_notes.outputs.NOTES }}" --token ${{ secrets.GITHUB_TOKEN }}