zh-CN: complete all 75 missing translations with professional AI/LLM terminology

[DreamRift]

Summary

• Added all 75 missing Chinese translations
• Coverage: 1362 → 1437 strings (100%)
• Used professional LLM/AI terminology consistent with the field

Key additions

• MoE/GPU: MoE 权重强制放入 CPU 的层数, 统一 KV 缓存, 推测解码 draft token
• Inference: 最大并发预测数, 对话模板, 单次处理最大提示词 token 数
• API endpoints: 兼容 Anthropic, 类 OpenAI, LM Studio REST API
• MCP: 远程 MCP 服务器连接, 临时 MCP 连接
• Model loading: 内存估算, 加载保护阈值, 模型源切换, 上下文长度设置
• Settings: 导航栏位置, 模型默认值, JIT 自动卸载

CLA

I have read the CLA Document and I hereby sign the CLA

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}