[Bug]: 定时任务经常无输出, 理应输出的结果经常被折叠在步骤或者thinking中

## QwenPaw Version

v2.2.1

## Description

定时任务经常无输出, 理应输出的结果经常被折叠在步骤或者thinking中
平时的正常对话有时候也会时不时出现这种不显示的情况,
有时候是结果被放在thinking中, 有时候是干脆没有结果

## Component(s) Affected

- [x] Core / Backend (app, agents, config, providers, utils, local_models)
- [ ] Console (frontend web UI)
- [ ] Channels (DingTalk, Feishu, QQ, Discord, iMessage, etc.)
- [ ] Skills
- [ ] CLI
- [ ] Documentation (website)
- [ ] Tests
- [ ] CI/CD
- [ ] Scripts / Deploy

## Environment

- **QwenPaw version:** [v2.2.1]
- **OS:** [WSL Ubuntu 22.04 on Windows 11]
- **Install method:** [pip]
- **Python version (if applicable):** [e.g. 3.13]