Qwen3.8 125B (6B active) Flash-Next

User reports Qwen3.8 Flash-Next at about 35 t/s on a single DGX Spark. Setup is SGLang with an NVFP4 quant at 262,144 context, used through VSCode Copilot in autopilot mode. The session produced about 10k lines of code and consumed about 800k tokens over 8 hours of planning, coding, and testing.