Update start.sh

start.sh

@@ -8,7 +8,10 @@ cd /app
 echo "[INIT] Switched to /app"
 
 echo "[CLEAN] Removing everything in /app except /app/tools ..."
-find /app -mindepth 1 -maxdepth 1 ! -name tools -exec rm -rf {} \;
+find /app -mindepth 1 -maxdepth 1 \
+  ! -name tools \
+  ! -name shield \
+  -exec rm -rf {} \;
 echo "[CLEAN] Cleanup complete."
 
 echo "[CLONE] Cloning private repo into /tmp/repo ..."