diff --git a/apps/ai-game-creator-shell/scripts/build-release.test.mjs b/apps/ai-game-creator-shell/scripts/build-release.test.mjs
index b5f8a44da..967380d0c 100644
--- a/apps/ai-game-creator-shell/scripts/build-release.test.mjs
+++ b/apps/ai-game-creator-shell/scripts/build-release.test.mjs
@@ -211,6 +211,9 @@ test('packaged renderer receives the same channel as the updater manifest', () =
   });
   let spawnOptions;
   runTauriBuild([], context, {
+    // 必须 stub：真实 staging 会用宿主平台（如 macOS 的 darwin/arm64）去对默认的
+    // Windows 目标做一致性校验，在非 Windows 主机上直接失败——本用例只关心渠道注入。
+    stageRuntime: () => {},
     spawn: (_binary, _args, options) => {
       spawnOptions = options;
       return { status: 0 };