使用sgs cookie 的值当 apikey请求 
import time
import json
import httpx
from fastapi import FastAPI, Request, HTTPException
from fastapi.responses import StreamingResponse
from pydantic import BaseModel

app = FastAPI()

model_mappings = {
    "claude-sonnet-4-20250514": "anthropic::2024-10-22::claude-sonnet-4-latest",
    "o4-mini": "openai::2024-02-01::o4-mini"
}

# 配置目标API基础URL
API_BASE_URL = "https://...