Update app.py

app.py

@@ -3,6 +3,15 @@ import os
 from llama_index.core import VectorStoreIndex, SimpleDirectoryReader, ServiceContext
 from llama_index.embeddings.huggingface import HuggingFaceEmbedding
 
+
+# Access from Hugging Face secret
+openai_api_key = os.environ.get("OPENAI_API_KEY")
+
+if openai_api_key:
+    os.environ["OPENAI_API_KEY"] = openai_api_key  # optional if your library reads it directly
+else:
+    raise ValueError("❌ OPENAI_API_KEY not found. Add it in Space settings > Secrets.")
+
 # ✅ Use Hugging Face embedding model
 embed_model = HuggingFaceEmbedding(model_name="sentence-transformers/all-MiniLM-L6-v2")
 service_context = ServiceContext.from_defaults(embed_model=embed_model)