Agent SDK 太多了，不知道用哪个了，选择困难症
Claude Agent SDK：https://docs.claude.com/en/api/agent-sdk/overview
Vercel AI SDK: https://ai-sdk.dev/docs/agents/overview
OpenAI Agent SDK: https://openai.github.io/openai-agents-js/
Cloudflare Agent SDK: https://developers.cloudflare.com/agents/
LangGraph: https://langchain-ai.github.io/langgraphjs/