- 添加_is_structured_output_request函数检测是否为结构化JSON输出请求
- 当检测到请求指定responseMimeType为application/json时，跳过gemini-balance主动添加的所有工具
- 仅在非结构化输出场景下，gemini-balance才会自动添加codeExecution、googleSearch、urlContext等工具
- 解决"Tool use with a response mime type: 'application/json' is unsupported"错误
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
