minimax: upgrade torch to cu130 for int8_convrot

worker/minimax_start.sh

@@ -15,6 +15,20 @@ PY="$(command -v python3 || command -v python)"
 
 echo "[minimax] variant=${VARIANT} comfy_target=${TARGET}"
 
+# --- 0. torch with CUDA 13 ------------------------------------------------
+# int8_convrot checkpoints need pytorch built against cu130 (per Comfy-Org
+# model card). Base image ships cu128 torch; swap it on first boot.
+if [ "${UPGRADE_TORCH_CU130:-1}" = "1" ]; then
+  CUR_CU="$("$PY" -c 'import torch; print(torch.version.cuda or "")' 2>/dev/null || echo '')"
+  case "$CUR_CU" in
+    13*) echo "[minimax] torch already cu${CUR_CU}" ;;
+    *)
+      echo "[minimax] upgrading torch cu${CUR_CU:-none} -> cu130"
+      "$PY" -m pip install -q -U torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu130
+      ;;
+  esac
+fi
+
 # --- 1. ComfyUI version ---------------------------------------------------
 cd "$COMFY"
 CUR="$(git describe --tags --exact-match 2>/dev/null || echo unknown)"