fix: 禁用 axios 自动代理读取，修复 HTTP_PROXY 导致 URL 拼接错误 (#493)

[easonlh]

Summary

• 禁用 Lark SDK 默认 axios 实例的自动代理读取（proxy: false），修复当系统设置 http_proxy 环境变量时 API URL 被错误拼接的问题
• 代理路由由 OpenClaw 核心的 global-agent 统一管理，Lark SDK 不应自行处理代理

Root Cause

@larksuiteoapi/node-sdk 使用 axios.create() 作为默认 HTTP 客户端。Axios v1.x 会自动读取 HTTP_PROXY/HTTPS_PROXY 环境变量并应用代理，与 OpenClaw 核心的 global-agent 产生冲突，导致 URL 被拼接为类似 http://127.0.0.1:7890https://open.feishu.cn/xxxx 的无效格式。

Fix

在 src/core/lark-client.ts 中，于 Lark.defaultHttpInstance 上显式设置 proxy: false，仅增加 1 行代码。

Test plan

• pnpm test — 271 tests passed
• pnpm lint — 0 errors
• 手动验证：设置 http_proxy 环境变量后，飞书 API 请求正常

Fixes #493

[evandance]

The proxy fix itself looks correct and minimal — proxy: false on Lark.defaultHttpInstance.defaults is the right way to disable axios' auto-reading of HTTP_PROXY/HTTPS_PROXY, and the comment explaining global-agent ownership is good context.

The PR currently bundles two independent changes though: the proxy fix (src/core/lark-client.ts) and the Schema 2 operator.user_id fallback from #505 (src/channel/interactive-dispatch.ts, commit 8988258), because this branch is opened on top of #505 rather than main. Each fix is a separate concern with separate review state — #505 still needs a codebase sweep before it can land — so they should travel independently.

Could you rebase #508 onto main so it carries only the proxy commit (7b6be30)? The proxy fix can then land cleanly without being coupled to #505's progress.

[easonlh]

@evandance 已经重新rebase，只剩 proxy 一个 commit。

[evandance]

Thanks for the rebase — the branch is now clean (proxy fix + a small drive-by converting three lark-client.ts comments from Chinese to English, which aligns with the repo's English-comments convention).

One adjustment before this is mergeable: the commit messages currently carry a Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> trailer. That doesn't match the repo's standard commit-message style — none of the recent merged commits, including AI-assisted contributions from other contributors, include Co-Authored-By trailers. Please amend both commits to drop the trailer and force-push.