feat(core): Update LLM applications building support (no-changelog) (#7710)

extracted out of #7336

---------

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>
Co-authored-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Alex Grozav <alex@grozav.com>

packages/editor-ui/src/mixins/pushConnection.ts

@@ -20,6 +20,7 @@ import type {
 	IWorkflowBase,
 	SubworkflowOperationError,
 	IExecuteContextData,
+	NodeOperationError,
 } from 'n8n-workflow';
 import { TelemetryHelpers } from 'n8n-workflow';
 
@@ -396,25 +397,59 @@ export const pushConnection = defineComponent({
 							type: 'error',
 							duration: 0,
 						});
-					} else {
+					} else if (
+						runDataExecuted.data.resultData.error?.name === 'NodeOperationError' &&
+						(runDataExecuted.data.resultData.error as NodeOperationError).functionality ===
+							'configuration-node'
+					) {
+						// If the error is a configuration error of the node itself doesn't get executed so we can't use lastNodeExecuted for the title
 						let title: string;
-						let type = 'error';
-						if (runDataExecuted.status === 'canceled') {
-							title = this.$locale.baseText('nodeView.showMessage.stopExecutionTry.title');
-							type = 'warning';
-						} else if (runDataExecuted.data.resultData.lastNodeExecuted) {
-							title = `Problem in node ‘${runDataExecuted.data.resultData.lastNodeExecuted}‘`;
+						const nodeError = runDataExecuted.data.resultData.error as NodeOperationError;
+						if (nodeError.node.name) {
+							title = `Error in sub-node ‘${nodeError.node.name}‘`;
 						} else {
 							title = 'Problem executing workflow';
 						}
 
 						this.showMessage({
 							title,
-							message: runDataExecutedErrorMessage,
-							type,
+							message:
+								(nodeError?.description ?? runDataExecutedErrorMessage) +
+								this.$locale.baseText('pushConnection.executionError.openNode', {
+									interpolate: {
+										node: nodeError.node.name,
+									},
+								}),
+							type: 'error',
 							duration: 0,
 							dangerouslyUseHTMLString: true,
 						});
+					} else {
+						let title: string;
+						const isManualExecutionCancelled =
+							runDataExecuted.mode === 'manual' && runDataExecuted.status === 'canceled';
+
+						// Do not show the error message if the workflow got canceled manually
+						if (isManualExecutionCancelled) {
+							this.showMessage({
+								title: this.$locale.baseText('nodeView.showMessage.stopExecutionTry.title'),
+								type: 'success',
+							});
+						} else {
+							if (runDataExecuted.data.resultData.lastNodeExecuted) {
+								title = `Problem in node ‘${runDataExecuted.data.resultData.lastNodeExecuted}‘`;
+							} else {
+								title = 'Problem executing workflow';
+							}
+
+							this.showMessage({
+								title,
+								message: runDataExecutedErrorMessage,
+								type: 'error',
+								duration: 0,
+								dangerouslyUseHTMLString: true,
+							});
+						}
 					}
 				} else {
 					// Workflow did execute without a problem