Function runDC002

tests/cpp/integration/engine_destroy_chain_test.cpp:102–127

DC002 body: mid-stream destroy.

// DC002 body: mid-stream destroy.
static void runDC002() {
    auto* engine = ::agenui::getAGenUIEngine();
    if (!engine) _exit(1);

    ::agenui::testing::MockMessageListener listener;

    auto* sm = engine->createSurfaceManager();
    if (!sm) _exit(2);
    ::agenui::testing::WaitForWorkerIdle();

    sm->addSurfaceEventListener(&listener);

    // Start a streaming session but do NOT end it
    sm->beginTextStream();
    sm->receiveTextChunk(createSurfaceJson("dc002"));
    sm->receiveTextChunk(R"({"version":"v0.9","updateCompon)");
    // Deliberately leave session open — no endTextStream()

    // Do NOT remove listener — tests uninit() robustness
    engine->destroySurfaceManager(sm);

    // No drain — engine->stop() drains the worker thread itself.
    ::agenui::destroyAGenUIEngine();

    _exit(0);
}

// DC003 body: multiple SurfaceManagers.
static void runDC003() {