FIX(app): handle shell operators properly

- Wrap command in sh -c for shell operators
- Fix &&, ||, | execution in host namespace

deploy/k8s/overlays/prod/kustomization.yaml

@@ -16,5 +16,5 @@ commonLabels:
 # 이미지 태그 설정 (ArgoCD Image Updater가 자동으로 업데이트)
 images:
   - name: gitea0213.kro.kr/bluemayne/mas
-    newTag: main-sha-38cbbafe9d0d9d215c126396bafecf2c27bed6a7
+    newTag: main-sha-a03903666a368706b8bbebe96f334b09aaa9f7c4
 

services/backend/tools/bash_tool.py

@@ -92,7 +92,8 @@ def execute_host(command: str, timeout: int = 30, use_sudo: bool = False) -> str
         # -u: UTS namespace (hostname)
         # -n: network namespace
         # -i: IPC namespace
-        nsenter_command = f"nsenter -t 1 -m -u -n -i -- {command}"
+        # Wrap command in sh -c to properly handle shell operators (&&, ||, |, etc.)
+        nsenter_command = f"nsenter -t 1 -m -u -n -i -- sh -c {subprocess.list2cmdline([command])}"
 
         result = subprocess.run(
             nsenter_command,