论坛之前改配置的方式也不太行，即使是 Ultra Plan，仍然连续报 503，几乎不可用： 
Error: HTTP 503 Service Unavailable
{
  "error": {
    "code": 503,
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "domain": "cloudcode-pa.googleapis.com",
        "metadata": {
          "model": "claude-sonnet-4-6"
        },
        "reason": "MODEL_CAPACITY_EXHAUSTED"
      }
    ],
    "message": "N...