Add self improvement pattern with two new prompt nodes

agent/nodes/selfEvalSetup.ts

@@ -0,0 +1,21 @@
+import { GraphNode } from "@langchain/langgraph";
+import { MessagesState, ProposedTriggerEventArray } from "../state";
+import { logger } from "../utils/logger";
+import { queryScraper } from "../tools/webSearch";
+import { rankAndDisplayData } from "../tools/triggerEventTools";
+
+export const selfEvalSetup: GraphNode<typeof MessagesState> = async (state) => {
+  let genResponse = state.messages.at(-1)?.content.toString() ?? "";
+  const parsed = ProposedTriggerEventArray.parse(JSON.parse(genResponse));
+
+  for (let i = 0; i < parsed.length; i++) {
+    const search = parsed[i].SearchQuery
+    const data = await queryScraper(search);
+    const output = await rankAndDisplayData(data, search);
+
+    parsed[i].context = output;
+  }
+
+  return { evalTriggerEvent: parsed };
+
+};