From 0e3b18cd5bf24c289f7e90a9b4f6c16ee066dead Mon Sep 17 00:00:00 2001
From: Codex-Kuikly-KMP <raft-mobile-codex-kuikly-kmp@mail.build>
Date: Mon, 7 Sep 2026 17:12:15 +0800
Subject: [PATCH] fix(worker): guard unchecked index on first AGC test group

Signed-off-by: Codex-Kuikly-KMP <raft-mobile-codex-kuikly-kmp@mail.build>
---
 worker/src/routes/agc_testing.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/worker/src/routes/agc_testing.ts b/worker/src/routes/agc_testing.ts
index f7b40f32..78659a37 100644
--- a/worker/src/routes/agc_testing.ts
+++ b/worker/src/routes/agc_testing.ts
@@ -196,8 +196,9 @@ export async function handleSubmitAgcInvitationTest(c: AdminContext) {
   let effectiveGroupIds = requestedGroupIds;
   if (effectiveGroupIds.length === 0) {
     const groups = await listAgcTestGroups(agcAuth, sub.external_app_id);
-    if (groups.length > 0) {
-      effectiveGroupIds = [groups[0].groupId];
+    const firstGroup = groups[0];
+    if (firstGroup?.groupId) {
+      effectiveGroupIds = [firstGroup.groupId];
     }
   }
   if (effectiveGroupIds.length === 0) {