question: 想问下右下角的⭕️转满了，然后报错{"error":{"type":"invalid_request_error","code":"unsupported_feature","message":"Responses feature is not supported by the Chat Completions bridge: input_image"}}

### 你想完成什么 / What are you trying to do

想继续对话需要压缩上下文，但压缩上下文具体怎么操作呀？

### 已尝试的步骤 / What you have tried

_No response_

### 环境 / Environment

- Cindy 版本或 commit / version or commit:
- 平台与版本 / platform & OS version:

Start by tracing the context-compression flow and reproducing the reported error involving input_image on the Chat Completions bridge. Check how the Responses feature is selected when continuing a conversation, then verify that compression allows the conversation to continue without the unsupported_feature error.

Written by the indexing model from the issue text.