这是中转查对 chat-only 的协议面与可用性快照。 它只回答“能不能用、协议面是否像官方”，不认证型号身份。
主分只看稳定性、对话、能力、目录；协议契约、错误码和包装在附录，不计入主分。
| 目标 | 型号 | 稳定性 | 对话 | 能力 | 目录 | 总分 |
|---|---|---|---|---|---|---|
| chat-only | gpt-6.1-sol | pass 100% (3/3) | n/a | pass 100% (3/3) | pass 100% (1/1) | A |
主分只看能不能用：稳定性、对话、能力、目录；协议细节在下面附录，不计入主分。
| 目标 | 包装 | 协议契约 | 错误码 |
|---|---|---|---|
| chat-only | n/a | n/a | n/a |
| 检查 | 结果 | 说明 |
|---|---|---|
chat.surface | pass | Chat Completions surface works |
chat.stream | pass | streaming completion finished with content |
chat.tools | pass | Chat function call produced with expected args |
chat.structured | pass | Chat JSON schema output matched |
chat.vision | pass | Chat image input answered correctly |
usage.stability | pass | prompt_tokens stable across repeats |
catalog.liveness | pass | all sampled catalog models answered |
identity.undetermined | info | protocol surface only; model identity is not authenticated |
源目录：examples/scenarios/chat-only
文件：PLAN.json, RESULTS.json, SUMMARY.json