具有 `stream: false` 的代理 API 总是返回 `messages: []` 和零令牌 - ResponseCollector 仅匹配传统字符串 `Claude-response` 形状

**Version:** 1.37.2, and 1.37.3 (the code is byte-identical in both). Self-hosted npm install, Node 22.23.1, Linux, `Claude` provider on a Pro subscription. Reached over plain HTTP on `127.0.0.1:3001`, no proxy.