[问题/Issue] 章节3.2.3：针对添加Apple Silicon GPU用户的代码补充 / Chapter3.2.3: Code additions for users with Apple Silicon GPUs

### 1. 遇到问题的章节 / Affected Chapter Chapter3.2.3 ### 2. 问题类型 / Issue Type 文档不清晰 / Unclear Documentation ### 3. 具体问题描述 / Problem Description 教程只提供了针对NVIDIA显卡的代码 `device = "cuda" if torch.cuda.is_available() else "cpu"` 希望可以添加Apple Silicon GPU初学者用户的代码教程 `device = "mps" if torch.backends.mps.is_available() else "cpu"` ### 4. 问题重现材料 / Reproduction Materials ```python device = "cuda" if torch.cuda.is_available() else "cpu" ``` ```bash Using device: cpu ``` ### 5. 补充信息 / Additional Information _No response_ ### 确认事项 / Verification - [x] 我已阅读过相关章节的文档 / I have read the relevant chapter documentation - [x] 我已搜索过现有的Issues,确认此问题未被报告 / I have searched existing Issues and confirmed this hasn't been reported - [ ] 我已尝试过基本的故障排除(如重启、重新安装依赖等) / I have tried basic troubleshooting (restart, reinstall dependencies, etc.)