finish backend refactoring

Author: IBMCIBMC265

visual-tree-search-backend/app/api/lwats/agents_async/SearchAgents/base_agent.py

@@ -362,7 +362,10 @@ async def websocket_simulation_result(self, reward, terminal_node, websocket=Non
             await websocket.send_json({
                 "type": "simulation_result",
                 "reward": reward,
-                "terminal_node": terminal_node,
+                "terminal_node_id": id(terminal_node),
+                "terminal_node_parent_id": id(terminal_node.parent),
+                "terminal_node_action": terminal_node.action,
+                "terminal_node_description": terminal_node.natural_language_description,
                 "timestamp": datetime.utcnow().isoformat()
             })
         else:

visual-tree-search-backend/test/test-tree-search-ws-lats.py

@@ -45,6 +45,7 @@
     'tree_update_node_expansion': '\033[96m',  # Cyan
     'tree_update_node_evaluation': '\033[96m', # Cyan
     'tree_update_node_children_evaluation': '\033[96m', # Cyan
+    'tree_update_node_backpropagation': '\033[96m', # Cyan
     'tree_update_simulation': '\033[96m', # Cyan
     'trajectory_update': '\033[96m',   # Cyan
     'removed_simulation': '\033[96m',  # Cyan