feat: add model download script for HF Space startup

download_models.py

@@ -0,0 +1,15 @@
+"""Run at Space startup to pull models from HF Hub."""
+from huggingface_hub import snapshot_download
+import os
+
+os.makedirs("models/zabantu_nso_sentiment", exist_ok=True)
+
+if not os.path.exists("models/zabantu_nso_sentiment/config.json"):
+    print("Downloading zabantu-nso-sentiment...")
+    snapshot_download(
+        repo_id="Sediba-AI/zabantu-nso-sentiment",
+        local_dir="models/zabantu_nso_sentiment"
+    )
+    print("Done.")
+else:
+    print("Model already present.")