✨ Optimize Response API, Link Handling, and Add File Upload Support

[luuquangvu]

• Remove the unused auto-refresh functionality and related imports. They are no longer needed since the underlying library issue has been resolved.
• Enhance error handling in client initialization and message sending.
• Refactor link handling to extract file paths and simplify Google search links. Close Model generates Google Search URLs instead of local file paths for tool calls #59. Close vscode + roo code中可以使用，但是会卡在检查点，而且似乎没有调用工具能力 #72
• Increase timeout value in configuration files from 60 to 120 seconds to better handle heavy tasks.
• Support upload file for /v1/responses endpoint.
• Refactor tool handling to support standard tools for /v1/responses endpoint.

[luuquangvu]

Update:

• Fix: replace running with _running for internal client status checks. Close 最新镜像启动报错'GeminiClientWrapper' object has no attribute 'running'. Did you mean: '_running' #74