From a420fa04173826c4369bd64b8f101131ef6ade11 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Wed, 18 Feb 2026 03:02:20 +0000
Subject: [PATCH] fix(test): align subagent announce chat history mock typing

---
 src/agents/subagent-announce.format.e2e.test.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/agents/subagent-announce.format.e2e.test.ts b/src/agents/subagent-announce.format.e2e.test.ts
index 0bca0877947..3020e2a48d5 100644
--- a/src/agents/subagent-announce.format.e2e.test.ts
+++ b/src/agents/subagent-announce.format.e2e.test.ts
@@ -24,7 +24,9 @@ const subagentRegistryMock = {
   countActiveDescendantRuns: vi.fn((_sessionKey: string) => 0),
   resolveRequesterForChildSession: vi.fn((_sessionKey: string): RequesterResolution => null),
 };
-const chatHistoryMock = vi.fn(async (_sessionKey: string) => ({ messages: [] as Array<unknown> }));
+const chatHistoryMock = vi.fn(async (_sessionKey?: string) => ({
+  messages: [] as Array<unknown>,
+}));
 let sessionStore: Record<string, Record<string, unknown>> = {};
 let configOverride: ReturnType<(typeof import("../config/config.js"))["loadConfig"]> = {
   session: {