Update app.py

app.py

@@ -17,10 +17,18 @@ DATE_COL = "date"
 # LOAD DATA (PRIVATE DATASET)
 # Uses HUGGINGFACE_HUB_TOKEN automatically
 # ======================================================
+import os
+from huggingface_hub import hf_hub_download
+
+HF_TOKEN = os.getenv("HF_TOKEN")
+if HF_TOKEN is None:
+    raise RuntimeError("HF_TOKEN environment variable not set")
+
 csv_path = hf_hub_download(
     repo_id=DATASET_REPO,
     filename=CSV_FILE,
-    repo_type="dataset"
+    repo_type="dataset",
+    token=HF_TOKEN
 )
 
 df = pd.read_csv(csv_path)