[Bug]: web_fetch tool fails to fetch websites when HTTP/HTTPS proxy is enabled #49948
Description
Bug type
Behavior bug (incorrect output/state without crash)
Summary
web_fetch 在代理环境下无法获取某些网站
Steps to reproduce
配置代理 → 启动 OpenClaw → 使用 web_fetch → 失败
Expected behavior
正常通过代理获取，或提供绕过选项
Actual behavior
连接/SSL 错误
OpenClaw version
2026.3.18
Operating system
Ubuntu 24.04
Install method
npm global
Model
bailian/kimi-k2.5
Provider / routing chain
openclaw -> bailian
Config file / key location
No response
Additional provider/model setup details
No response
Logs, screenshots, and evidence
Impact and severity
中等级别，影响需要代理的用户
Additional information
No response