本地 API 服务器 (端口 1337) 在特定的西里尔文请求体上未做响应就断开连接 (非字符边界切片崩溃)

• Jan version: 0.8.3
• OS: Arch Linux, kernel 6.19.9-zen1 (x86_64)
• GPU: NVIDIA GeForce RTX 4050 Laptop (CUDA 13 backend, LLaMA.cpp build b9743 / b9244)
• llamacpp-router/server version: 25.443.292
• Model used in repro: Jan-v3_5-4B-Q4_K_M (also reproduces on Jan-v2-VL-high-Q4_K_M — model-independent)
• Reached via the OpenAI-compatible endpoint http://127.0.0.1:1337/v1/chat/completions.

Steps to reproduce