enhance: prevent deploy when e2e failed

.github/workflows/deploy-db-test-pages.yml

@@ -14,6 +14,19 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: e2e-success
+          path: .
+        continue-on-error: true
+
+      - name: Check E2E success
+        run: |
+          if [ ! -f e2e-success.txt ]; then
+            echo "❌ E2E tests did not succeed — aborting release."
+            exit 1
+          fi
+
       - uses: actions/checkout@v4
 
       - name: Setup Java JDK