refactor: eliminate remaining duplicate blocks across draft streams and tests

src/agents/test-helpers/pi-tools-fs-helpers.ts

@@ -0,0 +1,33 @@
+import { expect } from "vitest";
+
+type TextResultBlock = { type: string; text?: string };
+
+export function getTextContent(result?: { content?: TextResultBlock[] }) {
+  const textBlock = result?.content?.find((block) => block.type === "text");
+  return textBlock?.text ?? "";
+}
+
+export function expectReadWriteEditTools<T extends { name: string }>(tools: T[]) {
+  const readTool = tools.find((tool) => tool.name === "read");
+  const writeTool = tools.find((tool) => tool.name === "write");
+  const editTool = tools.find((tool) => tool.name === "edit");
+  expect(readTool).toBeDefined();
+  expect(writeTool).toBeDefined();
+  expect(editTool).toBeDefined();
+  return {
+    readTool: readTool as T,
+    writeTool: writeTool as T,
+    editTool: editTool as T,
+  };
+}
+
+export function expectReadWriteTools<T extends { name: string }>(tools: T[]) {
+  const readTool = tools.find((tool) => tool.name === "read");
+  const writeTool = tools.find((tool) => tool.name === "write");
+  expect(readTool).toBeDefined();
+  expect(writeTool).toBeDefined();
+  return {
+    readTool: readTool as T,
+    writeTool: writeTool as T,
+  };
+}