Add summary

Author: cwickham

.github/workflows/update-prerelease-reference.yml

@@ -130,6 +130,11 @@ jobs:
 
           git checkout -b "$branch"
           git add -A
+
+          # Capture summary of changes before committing
+          diff_stat=$(git diff --cached --stat | tail -1)
+          changed_files=$(git diff --cached --name-only)
+
           git commit -m "Update reference pages for v${version}"
           git push origin "$branch"
 
@@ -139,7 +144,21 @@ jobs:
             --title "Update reference pages for v${version}" \
             --body "$(cat <<EOF
           Automated update of reference documentation for Quarto prerelease v${version}.
-          
+
+          ## Summary
+
+          ${diff_stat}
+
+          ## Changed files
+
+          \`\`\`
+          ${changed_files}
+          \`\`\`
+
+          ## Scripts run
+
+          - \`tools/reference.ts\` - format/cell/project reference JSON
+          - \`tools/reference-cli-generate-md.R\` - CLI reference markdown
           EOF
           )")