feat(Postgres Chat Memory, Redis Chat Memory, Xata): Add support for context window length (#10203)

packages/@n8n/nodes-langchain/nodes/memory/descriptions.ts

@@ -33,3 +33,11 @@ export const sessionKeyProperty: INodeProperties = {
 		},
 	},
 };
+
+export const contextWindowLengthProperty: INodeProperties = {
+	displayName: 'Context Window Length',
+	name: 'contextWindowLength',
+	type: 'number',
+	default: 5,
+	hint: 'How many past interactions the model receives as context',
+};