fix: 修复因代理ip不可用导致axios的proxy回退到环境变量代理问题

src/routes/admin.js

@@ -7183,6 +7183,7 @@ router.post('/openai-accounts/exchange-code', authenticateAdmin, async (req, res
     // 配置代理（如果有）
     const proxyAgent = ProxyHelper.createProxyAgent(sessionData.proxy)
     if (proxyAgent) {
+      axiosConfig.httpAgent = proxyAgent
       axiosConfig.httpsAgent = proxyAgent
       axiosConfig.proxy = false
     }

src/routes/openaiRoutes.js

@@ -332,6 +332,7 @@ const handleResponses = async (req, res) => {
 
     // 如果有代理，添加代理配置
     if (proxyAgent) {
+      axiosConfig.httpAgent = proxyAgent
       axiosConfig.httpsAgent = proxyAgent
       axiosConfig.proxy = false
       logger.info(`🌐 Using proxy for OpenAI request: ${ProxyHelper.getProxyDescription(proxy)}`)