From e1de3a7b21a1f062e7c72c8041aacc8f0bc28f51 Mon Sep 17 00:00:00 2001
From: win <win@windeMacBook-Pro.local>
Date: Thu, 26 Mar 2026 12:31:01 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20antigravity=20client=20=E6=97=A0?=
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解决 OAuth token 交换在国内服务器超时的问题：
当账号未绑定代理时，NewClient 现在显式使用 http.ProxyFromEnvironment，
使得 HTTPS_PROXY 环境变量对 oauth2.googleapis.com 等外部请求生效。
API 调用仍然走 node-tls-proxy（指纹伪装不受影响）。
---
 backend/internal/pkg/antigravity/client.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/backend/internal/pkg/antigravity/client.go b/backend/internal/pkg/antigravity/client.go
index f24ff5a8..e2802535 100644
--- a/backend/internal/pkg/antigravity/client.go
+++ b/backend/internal/pkg/antigravity/client.go
@@ -257,6 +257,16 @@ func NewClient(proxyURL string) (*Client, error) {
 			return nil, fmt.Errorf("configure proxy: %w", err)
 		}
 		client.Transport = transport
+	} else {
+		// 无显式代理时，使用支持 HTTPS_PROXY 环境变量的 Transport
+		// 用于 OAuth token 交换等需要访问外部服务的场景
+		client.Transport = &http.Transport{
+			Proxy: http.ProxyFromEnvironment,
+			DialContext: (&net.Dialer{
+				Timeout: proxyDialTimeout,
+			}).DialContext,
+			TLSHandshakeTimeout: proxyTLSHandshakeTimeout,
+		}
 	}
 
 	return &Client{