Feat: update CLAP / VST CI

.github/workflows/assemble-macos.yml

@@ -104,17 +104,23 @@ jobs:
           name: cagire-macos-universal-desktop
           path: Cagire.app.zip
 
+      - name: Prepare universal plugin staging
+        run: |
+          mkdir -p staging/clap staging/vst3
+          cp -R cagire-plugins.clap staging/clap/
+          cp -R cagire-plugins.vst3 staging/vst3/
+
       - name: Upload universal CLAP plugin
         uses: actions/upload-artifact@v4
         with:
           name: cagire-macos-universal-clap
-          path: cagire-plugins.clap
+          path: staging/clap/
 
       - name: Upload universal VST3 plugin
         uses: actions/upload-artifact@v4
         with:
           name: cagire-macos-universal-vst3
-          path: cagire-plugins.vst3
+          path: staging/vst3/
 
       - name: Upload DMG
         uses: actions/upload-artifact@v4