Add DMG packaging to release workflow.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: zeroman27

.github/workflows/release.yml

@@ -145,6 +145,21 @@ jobs:
           ditto -c -k --sequesterRsrc --keepParent FluffyFlash.app "$ARTIFACT_DIR/${NAME}.zip"
           shasum -a 256 "$ARTIFACT_DIR/${NAME}.zip" | tee "$ARTIFACT_DIR/${NAME}.zip.sha256"
 
+      - name: Package .app into .dmg
+        working-directory: FluffyFlash/build/Build/Products/Release
+        run: |
+          mkdir -p "$ARTIFACT_DIR"
+          NAME="FluffyFlash-${GITHUB_REF_NAME:-dev}"
+          DMG="$ARTIFACT_DIR/${NAME}.dmg"
+          rm -f "$DMG"
+          hdiutil create \
+            -volname "Fluffy Flash" \
+            -srcfolder FluffyFlash.app \
+            -ov \
+            -format UDZO \
+            "$DMG"
+          shasum -a 256 "$DMG" | tee "$ARTIFACT_DIR/${NAME}.dmg.sha256"
+
       - name: Security scan (Trivy on built .app)
         uses: aquasecurity/trivy-action@v0.36.0
         with: