When vllm.enabled, the front-proxy spawns a dedicated 'vllm' engine on the NVIDIA card(s)
with capability {vllm} only (mirrors the nvidia-gguf split) — a real subprocess, so it
appears in the engine/task page and routing/VRAM/thermal apply. Models pinned backend:vllm
route to it; vllm removed from the shared _DEFAULT_CAPS so no other node claims them.
vllm.gpu -> that node's CUDA_VISIBLE_DEVICES/CODERAI_ENGINE_GPUS. CUDA-only.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mw2KQiswmD69T45fTfjKwW