chore: render star history chart as png

.github/workflows/star-history.yml

@@ -15,24 +15,31 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Fetch latest chart (SVG)
+      - name: Install SVG renderer
+        run: |
+          set -euo pipefail
+          sudo apt-get update
+          sudo apt-get install -y librsvg2-bin
+
+      - name: Fetch latest chart (SVG) and render PNG
         run: |
           set -euo pipefail
           mkdir -p assets
           curl -fsSL \
             "https://api.star-history.com/svg?repos=sickn33/antigravity-awesome-skills&type=date&legend=top-left" \
-            -o assets/star-history.svg
+            -o /tmp/star-history.svg
+          rsvg-convert /tmp/star-history.svg -o assets/star-history.png
 
       - name: Commit and push if changed
         run: |
           set -euo pipefail
           if git diff --quiet; then
-            echo "No changes in star-history.svg"
+            echo "No changes in star-history.png"
             exit 0
           fi
 
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add assets/star-history.svg
+          git add assets/star-history.png
           git commit -m "chore: update star history chart"
           git push