Update app.py

app.py

@@ -658,12 +658,12 @@ def create_interface():
     return demo
 
 # ----------- Main Entry Point -----------
-if __name__ == "__main__":
-    config_file = os.getenv('RAG_CONFIG', 'config.yaml')
-    
-    config = Config(config_file)
-    kb = KBIndex()
-    ensure_index()
-    
-    demo = create_interface()
-    demo.launch()
+
+# Load config and KB at import time
+config_file = os.getenv("RAG_CONFIG", "config.yaml")
+config = Config(config_file)
+kb = KBIndex()
+ensure_index()
+
+# Expose `demo` for Hugging Face Spaces
+demo = create_interface()