feat: check if zip file is valid

- test the zip file to ensure its valid

.gitea/workflows/deploy.yaml

@@ -27,7 +27,7 @@ jobs:
           echo "Attempting to download plans from ${PLANS_URL}"
           while [ $RETRY_COUNT -lt $MAX_RETRIES ]; do
             # Download the file
-            curl -L -o /workspace/plans.zip "${PLANS_URL}"
+            curl -L -o /workspace/plans.zip "${PLANS_URL}" --fail --silent
             # Validate if it is a valid ZIP
             if unzip -t /workspace/plans.zip > /dev/null 2>&1; then
               echo "Plans file downloaded and verified successfully."