minimax: install into /opt/venv python (comfy runtime env)

worker/minimax_start.sh

@@ -11,7 +11,13 @@ VARIANT="${MODEL_VARIANT:-fl2va}"
 REPO="nikdevs/minimax-h3-${VARIANT}"
 TARGET="${COMFY_VERSION:-v0.31.0}"
 COMFY=/comfyui
-PY="$(command -v python3 || command -v python)"
+# ComfyUI runs under /opt/venv in worker-comfyui images — install into THAT
+# python, not the system one, or upgrades silently land in the wrong env.
+if [ -x /opt/venv/bin/python ]; then
+  PY=/opt/venv/bin/python
+else
+  PY="$(command -v python3 || command -v python)"
+fi
 
 echo "[minimax] variant=${VARIANT} comfy_target=${TARGET}"
 
@@ -27,6 +33,7 @@ if [ "${UPGRADE_TORCH_CU130:-1}" = "1" ]; then
       "$PY" -m pip install -q -U torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu130
       ;;
   esac
+  "$PY" -c 'import torch; assert (torch.version.cuda or "").startswith("13"), torch.version.cuda; print("[minimax] torch", torch.__version__, "cuda", torch.version.cuda)'
 fi
 
 # --- 1. ComfyUI version ---------------------------------------------------