Update utils/vector_search.py

utils/vector_search.py

@@ -15,7 +15,9 @@ qdrant_client = QdrantClient(
 )
 
 # Initialize SentenceTransformer model
-model = SentenceTransformer("all-MiniLM-L6-v2")
+cache_dir = os.environ.get("MODEL_CACHE_DIR", "/app/cache")  # Fallback to /app/cache
+os.makedirs(cache_dir, exist_ok=True)
+model = SentenceTransformer("all-MiniLM-L6-v2", cache_folder=cache_dir)
 
 # Collection name (must match the one used during upsert)
 collection_name = "symptoms"