fix(cursor): truncate toolResult bodies across compact reload

packages/ai/src/api/cursor-agent.ts

@@ -4133,6 +4133,9 @@ function buildConversationTurns(
 	return turns;
 }
 
+/** Returns the serialized byte cost of Cursor's complete stored history representation. */
+export { buildCursorHistoryWireBytesForTest, measureCursorHistorySerializedBytes } from "./cursor-agent/measure.ts";
+
 /** Exported for tests: decodes Cursor history blobs built from conversation messages. */
 export function buildCursorHistoryForTest(
 	messages: Message[],