[Bug]: Antigravity更新了Claude 可用模型，可否烦请大佬同步一下

[sz30]

提交前确认

• 我已经搜索过现有的 issues,确认这不是重复问题
• 我已经阅读过项目文档

是否是最新版

是,使用最新版

调用的是哪个渠道

antigravity

调用的是哪个模型

claude-sonnet-5-5-medium

调用的是哪个格式

openai 格式

具体报错内容

root@xx:~# curl -s \
  -H "Authorization: Bearer xx" \
  http://127.0.0.1:7861/antigravity/v1/models \
| grep -oE '"id":"claude-(sonnet|opus)-5-5-(low|medium|high)"' \
| cut -d'"' -f4
claude-opus-5-5-low
claude-sonnet-5-5-high
claude-sonnet-5-5-medium
claude-opus-5-5-high
claude-sonnet-5-5-low
claude-opus-5-5-medium
root@xx:~# curl -s \
  -X POST \
  http://127.0.0.1:7861/antigravity/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer xx" \
  -d '{
    "model": "claude-sonnet-5-5-medium",
    "messages": [
      {
        "role": "user",
        "content": "Reply with OK"
      }
    ],
    "stream": false
  }'
{"id":"6873eff5-e1f1-xxxx-xxxx-4fd03ce45bda","object":"chat.completion","created":1790000000,"model":"claude-sonnet-5-5-medium","choices":[{"index":0,"message":{"role":"assistant","content":"Claude Sonnet 4.6 is no longer available. Please switch to Claude Sonnet 5.5."},"finish_reason":"stop"}],"usage":{"prompt_tokens":0,"completion_tokens":0,"total_tokens":0}}

错误描述

Antigravity 更新了 Claude 系列的models，现在可用下列:

• claude-sonnet-5-5-low
• claude-sonnet-5-5-medium
• claude-sonnet-5-5-high
• claude-opus-5-5-low
• claude-opus-5-5-medium
• claude-opus-5-5-high

但当我调用 claude-opus-5-5-medium 时出错，提示信息：

Claude Sonnet 4.6 is no longer available.
Please switch to Claude Sonnet 5.5.

看来 request normalization 可能还是把 Sonnet/Opus 模型映射为 Claude 4.6
可否烦请大佬同步更新一下

补充信息(可选)

No response

[sz30]

已提交修复 PR #422，实测 Claude Sonnet/Opus 5.5 的 low、medium、high 六个模型均可正常调用。