fix: order imports in Step 1 and add missing torch import in Step 7

scripts/gridmind_grpo_colab.ipynb

@@ -60,8 +60,8 @@
    "source": [
     "import requests\n",
     "import json\n",
-    "import time\n",
     "import sys\n",
+    "import time\n",
     "\n",
     "ENV_URL = \"https://prajwal782007-gridmind.hf.space\"\n",
     "\n",
@@ -493,6 +493,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "import torch\n\n",
     "def run_llm_episode(task_id=1, max_steps=96):\n",
     "    \"\"\"Run an episode using the trained LLM.\"\"\"\n",
     "    try:\n",