etcp: переупорядочить close + защита state==2 во всех API-точках; topo: правильная очистка group nodes и registry; chat/member: новый модуль member_sync; chatgui: обновления транспорта и UI

tools/chatgui/transport/utun_node.cpp

@@ -101,15 +101,9 @@ void UtunNode::stop() {
 }
 
 void UtunNode::finalize() {
-    if (!m_instance) return;
-    DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "finalize: cleanup start");
-    etcp_router_bind(m_instance, ETCP_RT_ID_CHAT, nullptr);
-    chat_sync_destroy(m_instance);
-    chat_core_destroy(m_instance);
-    utun_instance_destroy(m_instance);
+    if (m_ua) { uasync_destroy(m_ua, 0); m_ua = nullptr; }
     m_instance = nullptr;
-    uasync_destroy(m_ua, 0);
-    m_ua = nullptr;
+    m_running = false;
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "finalize: cleanup done");
 }
 
@@ -409,6 +403,12 @@ void UtunNode::runLoop() {
 
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "runLoop: poll exit m_stop=%d", (int)m_stop);
 
+    if (m_instance) {
+        DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "runLoop: destroying instance in worker thread");
+        utun_instance_destroy(m_instance);
+        m_instance = nullptr;
+    }
+
     signal(SIGINT, SIG_DFL);
     signal(SIGTERM, SIG_DFL);