$ uv run tools/flow.py llm down
✔ OpenAI credential: broken key (drill). Restore with: uv run tools/flow.py llm up

$ uv run tools/flow.py call my-helpdesk requests/faq-vpn-nocache.json -v
HTTP 500 · 1.3s
    → request  POST /webhook/my-helpdesk
      {
        "question": "VPN 접속이 자꾸 끊겨요. 어떻게 하나요?",
        "user": "이준호",
        "no_cache": true
      }
    ← response HTTP 500
      {
        "message": "Error in workflow"
      }

$ uv run tools/flow.py llm up
✔ OpenAI credential: real key from .env restored