fix: surface detailed workflow errors in the UI

new_ui/backend/api/routes/workflows.py

@@ -99,6 +99,7 @@ async def get_workflow_status(task_id: str):
         "message": task.message,
         "result": task.result,
         "error": task.error,
+        "error_details": task.error_details,
         "started_at": task.started_at.isoformat() if task.started_at else None,
         "completed_at": task.completed_at.isoformat() if task.completed_at else None,
     }
@@ -238,6 +239,7 @@ async def get_recent_tasks(limit: int = 10):
                 "message": task.message,
                 "result": task.result,
                 "error": task.error,
+                "error_details": task.error_details,
                 "started_at": task.started_at,
                 "completed_at": task.completed_at,
             }

new_ui/backend/api/websockets/workflow_ws.py

@@ -102,11 +102,13 @@ async def workflow_websocket(websocket: WebSocket, task_id: str):
             "type": "status",
             "task_id": task_id,
             "status": task.status,
-            "progress": task.progress,
-            "message": task.message,
-            "timestamp": datetime.utcnow().isoformat(),
-        }
-    )
+                "progress": task.progress,
+                "message": task.message,
+                "error": task.error,
+                "error_details": task.error_details,
+                "timestamp": datetime.utcnow().isoformat(),
+            }
+        )
 
     # Send pending interaction if any (fixes race condition where interaction_required
     # was broadcast before WebSocket connected)
@@ -149,6 +151,7 @@ async def workflow_websocket(websocket: WebSocket, task_id: str):
                         "type": "error",
                         "task_id": task_id,
                         "error": task.error,
+                        "error_details": task.error_details,
                         "timestamp": datetime.utcnow().isoformat(),
                     }
                 )

new_ui/backend/models/responses.py

@@ -25,6 +25,7 @@ class WorkflowStatusResponse(BaseModel):
     message: str = ""
     result: Optional[Dict[str, Any]] = None
     error: Optional[str] = None
+    error_details: Optional[Dict[str, Any]] = None
     started_at: Optional[datetime] = None
     completed_at: Optional[datetime] = None