ci: use reusable build workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: DeepDiver1975

.github/workflows/main.yml

@@ -58,11 +58,9 @@ jobs:
   build:
     name: Build
     needs:
+      - get-vars
       - php-code-style
       - php-unit
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-      - name: Build
-        run: make dist
+    uses: owncloud/reusable-workflows/.github/workflows/build.yml@main
+    with:
+      app-name: ${{ needs.get-vars.outputs.app-name }}