[CI] Improve Code Prepare stability and cleanup logic (#7198)

.github/workflows/_base_test.yml

@@ -81,7 +81,14 @@ jobs:
               if ls "${REPO_NAME}"* >/dev/null 2>&1; then
                 echo "ERROR: Failed to clean ${REPO_NAME}* after multiple attempts"
                 ls -ld "${REPO_NAME}"*
-                exit 1
+                echo "Attempting force cleanup with find..."
+                find /workspace -mindepth 1 -maxdepth 1 -name "${REPO_NAME}*" -type d -exec chmod -R u+rwx {} \; -exec rm -rf {} + 2>/dev/null || true
+                if ls "${REPO_NAME}"* >/dev/null 2>&1; then
+                  echo "ERROR: Force cleanup still failed"
+                  exit 1
+                else
+                  echo "Force cleanup succeeded"
+                fi
               fi
             '
 
@@ -111,7 +118,11 @@ jobs:
             exit 1
           fi
 
-          tar -xf FastDeploy.tar.gz
+          tar --no-same-owner -xf FastDeploy.tar.gz || {
+            echo "ERROR: Failed to extract archive"
+            exit 1
+          }
+
           rm -rf FastDeploy.tar.gz
           cd FastDeploy
           git config --global user.name "FastDeployCI"