Update Hugging Face username in vector db loading

osho_qa_service.py

@@ -60,6 +60,10 @@ def get_answer_from_osho(question: str, n_results: int = 5) -> Dict:
     """
     # Initialize ChromaDB client
     db_dir = os.path.join(os.getcwd(), "vector_db")
+    if not os.path.exists(db_dir):
+        # If local path doesn't exist, download from Hugging Face
+        from huggingface_hub import snapshot_download
+        db_dir = snapshot_download(repo_id="harithapliyal/osho-vector-db")
     client = chromadb.PersistentClient(path=db_dir)
     
     # Initialize embedding function