[Bug]: beta版本测试antigravity模型失败

[myStanZQ]

Summary

BitFun 0.2.19-beta.1 on Linux amd64
loadCodeAssist failed: HTTP 400
Invalid value at metadata.platform: "LINUX"

Area

Desktop app

Reproduction or evidence

1.登陆Aantigravity账号
2.配置
3.测试可用性
现象：测试失败 (8748ms)
详细错误: loadCodeAssist failed: HTTP 400 Bad Request: {
"error": {
"code": 400,
"message": "Invalid value at 'metadata.platform' (type.googleapis.com/google.internal.cloud.code.v1internal.ClientMetadata.Platform), "LINUX"",
"status": "INVALID_ARGUMENT",
"details": [
{
"@type": "type.googleapis.com/google.rpc.BadRequest",
"fieldViolations": [
{
"field": "metadata.platform",
"description": "Invalid value at 'metadata.platform' (type.googleapis.com/google.internal.cloud.code.v1internal.ClientMetadata.Platform), "LINUX""
}
]
}
]
}
}

Environment, if relevant

ubuntu 2604 LTS