feat(core): Improve Langsmith traces for AI executions (#9081)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>

packages/workflow/package.json

@@ -65,6 +65,7 @@
     "recast": "0.21.5",
     "title-case": "3.0.3",
     "transliteration": "2.3.5",
-    "xml2js": "0.6.2"
+    "xml2js": "0.6.2",
+    "@langchain/core": "0.1.41"
   }
 }

packages/workflow/src/Interfaces.ts

@@ -19,6 +19,7 @@ import type { WorkflowHooks } from './WorkflowHooks';
 import type { NodeOperationError } from './errors/node-operation.error';
 import type { NodeApiError } from './errors/node-api.error';
 import type { AxiosProxyConfig } from 'axios';
+import type { CallbackManager as CallbackManagerLC } from '@langchain/core/callbacks/manager';
 
 export interface IAdditionalCredentialOptions {
 	oauth2?: IOAuth2Options;
@@ -842,6 +843,7 @@ export type IExecuteFunctions = ExecuteFunctions.GetNodeParameterFn &
 		executeWorkflow(
 			workflowInfo: IExecuteWorkflowInfo,
 			inputData?: INodeExecutionData[],
+			parentCallbackManager?: CallbackManager,
 		): Promise<any>;
 		getInputConnectionData(
 			inputName: ConnectionTypes,
@@ -881,6 +883,8 @@ export type IExecuteFunctions = ExecuteFunctions.GetNodeParameterFn &
 				getBinaryDataBuffer(itemIndex: number, propertyName: string): Promise<Buffer>;
 				copyInputItems(items: INodeExecutionData[], properties: string[]): IDataObject[];
 			};
+
+		getParentCallbackManager(): CallbackManager | undefined;
 	};
 
 export interface IExecuteSingleFunctions extends BaseExecutionFunctions {
@@ -2028,6 +2032,7 @@ export interface IWorkflowExecuteAdditionalData {
 			loadedWorkflowData?: IWorkflowBase;
 			loadedRunData?: any;
 			parentWorkflowSettings?: IWorkflowSettings;
+			parentCallbackManager?: CallbackManager;
 		},
 	) => Promise<any>;
 	executionId?: string;
@@ -2059,6 +2064,7 @@ export interface IWorkflowExecuteAdditionalData {
 			nodeType?: string;
 		},
 	) => Promise<void>;
+	parentCallbackManager?: CallbackManager;
 }
 
 export type WorkflowExecuteMode =
@@ -2583,3 +2589,5 @@ export type BannerName =
 export type Functionality = 'regular' | 'configuration-node' | 'pairedItem';
 
 export type Result<T, E> = { ok: true; result: T } | { ok: false; error: E };
+
+export type CallbackManager = CallbackManagerLC;