为什么越往后的章节，每个段落文字越来越少，变成短句了...

### What happened?

为什么越往后的章节，每个段落文字越来越少，变成短句了...

### Steps to reproduce

inkos write next

### Expected behavior

段落字数正常

### InkOS version

0.5.0

### Operating system

macOS

### LLM provider / model

_No response_

### Relevant logs

```shell

```