fix: Use NodeStatus.EXECUTED instead of COMPLETED

NodeStatus enum has EXECUTED, not COMPLETED. Fixed in workflow_executor.py progress callback.

backend/workflow_executor.py

@@ -179,7 +179,7 @@ async def execute_workflow(
                     "node_label": node_label,
                     "status": node_state.status.value,
                     "total_nodes": len(graph.nodes),
-                    "completed_nodes": len([ns for ns in node_states if ns.status in [NodeStatus.COMPLETED, NodeStatus.SKIPPED]]),
+                    "completed_nodes": len([ns for ns in node_states if ns.status in [NodeStatus.EXECUTED, NodeStatus.SKIPPED]]),
                     "error": node_state.error if node_state.status == NodeStatus.FAILED else None
                 })
 
@@ -214,7 +214,7 @@ async def execute_workflow(
                 "status": "completed",
                 "aggregated_result": aggregated,
                 "total_nodes": len(node_states),
-                "completed_nodes": len([ns for ns in node_states if ns.status == NodeStatus.COMPLETED]),
+                "completed_nodes": len([ns for ns in node_states if ns.status == NodeStatus.EXECUTED]),
                 "skipped_nodes": len([ns for ns in node_states if ns.status == NodeStatus.SKIPPED]),
                 "failed_nodes": len([ns for ns in node_states if ns.status == NodeStatus.FAILED]),
                 "completed_at": completed_at