fix: support Google Colab secrets for HF_TOKEN loading

unit1/dummy_agent_library.ipynb

@@ -44,10 +44,15 @@
         "import os\n",
         "from huggingface_hub import InferenceClient\n",
         "\n",
-        "## You need a token from https://hf.co/settings/tokens, ensure that you select 'read' as the token type. If you run this on Google Colab, you can set it up in the \"settings\" tab under \"secrets\". Make sure to call it \"HF_TOKEN\"\n",
-        "# HF_TOKEN = os.environ.get(\"HF_TOKEN\")\n",
+        "## You need a token from https://hf.co/settings/tokens, ensure that you select 'read' as the token type.\n",
+        "## If you run this on Google Colab, add it in the \"Secrets\" tab (key icon on the left sidebar) and call it \"HF_TOKEN\".\n",
+        "try:\n",
+        "    from google.colab import userdata\n",
+        "    HF_TOKEN = userdata.get(\"HF_TOKEN\")\n",
+        "except ImportError:\n",
+        "    HF_TOKEN = os.environ.get(\"HF_TOKEN\")\n",
         "\n",
-        "client = InferenceClient(model=\"moonshotai/Kimi-K2.5\")"
+        "client = InferenceClient(model=\"moonshotai/Kimi-K2.5\", token=HF_TOKEN)"
       ]
     },
     {