diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/ChatApplication.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/ChatApplication.kt
index 4bd6da21..07fa39fa 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/ChatApplication.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/ChatApplication.kt
@@ -5,6 +5,7 @@ import android.util.Log
 import com.utun.chat.data.LogManager
 import com.utun.chat.data.ConfigProvider
 import com.utun.chat.data.NativeLib
+import com.utun.chat.data.NotificationSound
 import com.utun.chat.data.ChatEventCallback
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.SharedFlow
@@ -29,6 +30,10 @@ class ChatApplication : Application() {
         logManager = LogManager
         configProvider = ConfigProvider(this)
 
+        /* Notification sound state: global toggle + per-group mute */
+        NotificationSound.enabled = configProvider.getSoundEnabled()
+        NotificationSound.mutedChannels = configProvider.getMutedChannels()
+
         /* One-time event callback registration — survives ViewModel recreation */
         NativeLib.setEventCallback(AppEventHandler)
 
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/ConfigProvider.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/ConfigProvider.kt
index 136c2ec1..164d6c33 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/ConfigProvider.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/ConfigProvider.kt
@@ -6,6 +6,7 @@ import androidx.datastore.preferences.core.booleanPreferencesKey
 import androidx.datastore.preferences.core.edit
 import androidx.datastore.preferences.core.intPreferencesKey
 import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.datastore.preferences.core.stringSetPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
@@ -48,6 +49,8 @@ class ConfigProvider(private val context: Context) {
     private val firstLaunchDone = booleanPreferencesKey("first_launch_done")
     private val connectionModeKey = stringPreferencesKey("connection_mode")
     private val serviceEnabledKey = booleanPreferencesKey("service_enabled")
+    private val soundEnabledKey = booleanPreferencesKey("sound_enabled")
+    private val mutedChannelsKey = stringSetPreferencesKey("muted_channels")
 
     private fun keysFilePath(): String {
         val dir = runBlocking { context.dataStore.data.first()[dbPath] } ?: context.filesDir.absolutePath
@@ -220,6 +223,27 @@ class ConfigProvider(private val context: Context) {
         context.dataStore.edit { prefs -> prefs[serviceEnabledKey] = enabled }
     }
 
+    /* ── Notification sound (global toggle + per-group mute) ── */
+
+    fun getSoundEnabled(): Boolean = runBlocking {
+        context.dataStore.data.first()[soundEnabledKey] ?: true
+    }
+
+    suspend fun setSoundEnabled(enabled: Boolean) {
+        context.dataStore.edit { prefs -> prefs[soundEnabledKey] = enabled }
+    }
+
+    fun getMutedChannels(): Set<String> = runBlocking {
+        context.dataStore.data.first()[mutedChannelsKey] ?: emptySet()
+    }
+
+    suspend fun setChannelMuted(channelId: String, muted: Boolean) {
+        context.dataStore.edit { prefs ->
+            val cur = prefs[mutedChannelsKey] ?: emptySet()
+            prefs[mutedChannelsKey] = if (muted) cur + channelId else cur - channelId
+        }
+    }
+
     /* ── Server entries ── */
 
     suspend fun detectInterfaces(saved: List<ServerEntry> = emptyList()): List<ServerEntry> {
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/NotificationSound.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/NotificationSound.kt
new file mode 100644
index 00000000..0dac84dd
--- /dev/null
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/NotificationSound.kt
@@ -0,0 +1,38 @@
+package com.utun.chat.data
+
+import android.media.AudioAttributes
+import android.media.MediaPlayer
+import com.utun.chat.ChatApplication
+import com.utun.chat.R
+
+/* Уведомительный звук входящих сообщений (msg_incoming.mp3).
+   Глобальный тумблер (enabled) + per-group mute (mutedChannels). */
+object NotificationSound {
+    @Volatile var enabled: Boolean = true
+    @Volatile var mutedChannels: Set<String> = emptySet()
+
+    fun isMuted(channelId: String): Boolean = channelId in mutedChannels
+
+    fun setMuted(channelId: String, muted: Boolean) {
+        mutedChannels = if (muted) mutedChannels + channelId else mutedChannels - channelId
+    }
+
+    fun play(channelId: String) {
+        if (!enabled || isMuted(channelId)) return
+        try {
+            val mp = MediaPlayer.create(ChatApplication.instance, R.raw.msg_incoming)
+                ?: return
+            mp.setAudioAttributes(
+                AudioAttributes.Builder()
+                    .setUsage(AudioAttributes.USAGE_NOTIFICATION)
+                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
+                    .build()
+            )
+            mp.setOnCompletionListener { it.release() }
+            mp.start()
+            LogManager.addLog("DEBUG", "Sound", "notification played ch=$channelId")
+        } catch (e: Exception) {
+            LogManager.addLog("WARN", "Sound", "play failed: ${e.message}")
+        }
+    }
+}
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChannelListScreen.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChannelListScreen.kt
index 3207076f..0059f0aa 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChannelListScreen.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChannelListScreen.kt
@@ -23,6 +23,9 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.utun.chat.data.Channel
+import com.utun.chat.data.NotificationSound
+import com.utun.chat.ChatApplication
+import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -39,6 +42,8 @@ fun ChannelListScreen(
     onRefresh: () -> Unit = {}
 ) {
     var showCreateDialog by remember { mutableStateOf(false) }
+    var menuChannelId by remember { mutableStateOf<String?>(null) }
+    var optionsChannel by remember { mutableStateOf<Channel?>(null) }
 
     LaunchedEffect(Unit) { onRefresh() }
 
@@ -88,9 +93,22 @@ fun ChannelListScreen(
                                 Box(Modifier.width(4.dp).fillMaxHeight().background(barColor))
                                 Row(Modifier.fillMaxWidth().padding(12.dp)) {
                                     Box(Modifier.size(44.dp), contentAlignment = Alignment.Center) {
-                                        IconButton(onClick = { onInviteClick(ch) }, modifier = Modifier.size(44.dp)) {
+                                        IconButton(onClick = { menuChannelId = ch.id }, modifier = Modifier.size(44.dp)) {
                                             Text("#", fontSize = 22.sp)
                                         }
+                                        DropdownMenu(
+                                            expanded = menuChannelId == ch.id,
+                                            onDismissRequest = { menuChannelId = null }
+                                        ) {
+                                            DropdownMenuItem(
+                                                text = { Text("Invite link") },
+                                                onClick = { menuChannelId = null; onInviteClick(ch) }
+                                            )
+                                            DropdownMenuItem(
+                                                text = { Text("Options") },
+                                                onClick = { menuChannelId = null; optionsChannel = ch }
+                                            )
+                                        }
                                         if (badgeText.isNotEmpty()) {
                                             val badgeSize = 18.dp
                                             Box(
@@ -137,6 +155,44 @@ fun ChannelListScreen(
             }
         )
     }
+
+    optionsChannel?.let { ch ->
+        ChannelOptionsDialog(
+            channel = ch,
+            onDismiss = { optionsChannel = null }
+        )
+    }
+}
+
+@Composable
+fun ChannelOptionsDialog(channel: Channel, onDismiss: () -> Unit) {
+    val scope = rememberCoroutineScope()
+    var soundOn by remember(channel.id) { mutableStateOf(!NotificationSound.isMuted(channel.id)) }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(channel.name) },
+        text = {
+            Column {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    Text("Sound", modifier = Modifier.weight(1f))
+                    Switch(
+                        checked = soundOn,
+                        onCheckedChange = {
+                            soundOn = it
+                            NotificationSound.setMuted(channel.id, !it)
+                            scope.launch {
+                                ChatApplication.instance.configProvider.setChannelMuted(channel.id, !it)
+                            }
+                        }
+                    )
+                }
+            }
+        },
+        confirmButton = {
+            TextButton(onClick = onDismiss) { Text("Close") }
+        }
+    )
 }
 
 @Composable
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
index a5a2aa96..3196302d 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/SettingsScreen.kt
@@ -17,6 +17,7 @@ import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
 import com.utun.chat.ChatApplication
 import com.utun.chat.data.NativeLib
+import com.utun.chat.data.NotificationSound
 import com.utun.chat.data.ServerEntry
 import com.utun.chat.data.LocalSocketState
 import com.utun.chat.headless.HeadlessService
@@ -447,6 +448,9 @@ private fun AudioSettingsTab(vm: ChatViewModel) {
     var micTesting by remember { mutableStateOf(false) }
     var micLevel by remember { mutableStateOf(0f) }
 
+    /* Notification sound */
+    var soundEnabled by remember { mutableStateOf(provider.getSoundEnabled()) }
+
     LaunchedEffect(micTesting) {
         if (micTesting) {
             while (true) { micLevel = NativeLib.voiceGetPeakLevel(); delay(25) }
@@ -486,6 +490,19 @@ private fun AudioSettingsTab(vm: ChatViewModel) {
         modifier = Modifier.padding(16.dp).verticalScroll(rememberScrollState()),
         verticalArrangement = Arrangement.spacedBy(12.dp)
     ) {
+        /* ── Notification sound ── */
+        Text("Notification sound", style = MaterialTheme.typography.titleMedium)
+        Row(verticalAlignment = Alignment.CenterVertically) {
+            Text("Play sound on incoming message", modifier = Modifier.weight(1f))
+            Switch(checked = soundEnabled, onCheckedChange = {
+                soundEnabled = it
+                NotificationSound.enabled = it
+                scope.launch { provider.setSoundEnabled(it) }
+            })
+        }
+
+        HorizontalDivider(Modifier.padding(vertical = 4.dp))
+
         /* ── Microphone test ── */
         Text("Microphone test", style = MaterialTheme.typography.titleMedium)
         Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/viewmodel/ChatViewModel.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/viewmodel/ChatViewModel.kt
index 96ca2da6..072a138c 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/viewmodel/ChatViewModel.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/viewmodel/ChatViewModel.kt
@@ -203,6 +203,11 @@ class ChatViewModel : ViewModel() {
                 val chLen = data[0].toInt() and 0xFF
                 if (data.size >= 1 + chLen) {
                     val chId = String(data, 1, chLen)
+                    if (data.size >= 1 + chLen + 8) {
+                        val author = java.nio.ByteBuffer.wrap(data, 1 + chLen, 8)
+                            .order(java.nio.ByteOrder.LITTLE_ENDIAN).long
+                        if (author != NativeLib.getMyNodeId()) NotificationSound.play(chId)
+                    }
                     val cur = _currentChannel.value
                     if (cur != null && cur.id == chId) refreshMessages(chId)
                     refreshChannels()
diff --git a/tools/chatgui-android/app/src/main/res/raw/msg_incoming.mp3 b/tools/chatgui-android/app/src/main/res/raw/msg_incoming.mp3
new file mode 100644
index 00000000..97a03532
Binary files /dev/null and b/tools/chatgui-android/app/src/main/res/raw/msg_incoming.mp3 differ
diff --git a/tools/chatgui/resources/chatgui.qrc b/tools/chatgui/resources/chatgui.qrc
index dcda5edc..aaa4fa7a 100644
--- a/tools/chatgui/resources/chatgui.qrc
+++ b/tools/chatgui/resources/chatgui.qrc
@@ -9,6 +9,7 @@
         <file>icons/emoji.png</file>
         <file>icons/mic.png</file>
         <file>icons/send.png</file>
+        <file>sounds/msg_incoming.mp3</file>
         <file>bg.jpg</file>
     </qresource>
 </RCC>
diff --git a/tools/chatgui/src/accountdelegate.cpp b/tools/chatgui/src/accountdelegate.cpp
index e95fce41..2b2c3841 100644
--- a/tools/chatgui/src/accountdelegate.cpp
+++ b/tools/chatgui/src/accountdelegate.cpp
@@ -49,6 +49,10 @@ void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
         int n = __builtin_popcount(visualFlags);
         flagX += nameFont.pixelSize() * n + (n - 1) * 2;
     }
+    if (index.data(Qt::UserRole + 4).toBool()) {
+        FlagPainter::drawStorage(painter, flagX, option.rect.top() + (option.rect.height() - nameFont.pixelSize()) / 2, nameFont.pixelSize());
+        flagX += nameFont.pixelSize() + 2;
+    }
 
     QString name = index.data(Qt::DisplayRole).toString();
     painter->drawText(QRect(flagX, option.rect.top() + 2, w - (flagX - x), yMid - option.rect.top() - 2),
@@ -62,7 +66,7 @@ void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
 
     QString sub = index.data(Qt::UserRole + 1).toString();
     if (!sub.isEmpty())
-        painter->drawText(QRect(x, yMid + 2, w, option.rect.bottom() - yMid - 2),
+        painter->drawText(QRect(flagX, yMid + 2, w - (flagX - x), option.rect.bottom() - yMid - 2),
                           Qt::AlignLeft | Qt::AlignTop, sub);
 
     painter->restore();
diff --git a/tools/chatgui/src/flagpainter.cpp b/tools/chatgui/src/flagpainter.cpp
index f8fe3f04..48d44c7a 100644
--- a/tools/chatgui/src/flagpainter.cpp
+++ b/tools/chatgui/src/flagpainter.cpp
@@ -67,3 +67,23 @@ void FlagPainter::drawShield(QPainter* p, int x, int y, int sz) {
     p->drawPath(path);
     p->restore();
 }
+
+void FlagPainter::drawStorage(QPainter* p, int x, int y, int sz) {
+    p->save();
+    p->setRenderHint(QPainter::Antialiasing);
+    qreal cx = x + sz / 2.0, t = y + 1.0, b = y + sz - 1.0;
+    qreal w = sz * 0.36, gap = sz * 0.20;
+    QPainterPath path;
+    path.moveTo(cx - w, t);
+    path.lineTo(cx + w, t);
+    path.lineTo(cx + w, b);
+    path.lineTo(cx - w, b);
+    path.closeSubpath();
+    p->setPen(QPen(QColor("#37474F"), 0.8));
+    p->setBrush(QColor("#78909C"));
+    p->drawPath(path);
+    p->setBrush(QColor("#ECEFF1"));
+    p->drawEllipse(QPointF(cx, t), w, gap);
+    p->drawEllipse(QPointF(cx, b), w, gap);
+    p->restore();
+}
diff --git a/tools/chatgui/src/flagpainter.h b/tools/chatgui/src/flagpainter.h
index e52ea2f5..afb14cf5 100644
--- a/tools/chatgui/src/flagpainter.h
+++ b/tools/chatgui/src/flagpainter.h
@@ -13,6 +13,7 @@
 class FlagPainter {
 public:
     static void draw(QPainter* p, uint8_t flags, int x, int y, int sz);
+    static void drawStorage(QPainter* p, int x, int y, int sz);
 
 private:
     static void drawLightning(QPainter* p, int x, int y, int sz);
diff --git a/tools/chatgui/src/main.cpp b/tools/chatgui/src/main.cpp
index 841e6668..89a56826 100644
--- a/tools/chatgui/src/main.cpp
+++ b/tools/chatgui/src/main.cpp
@@ -18,6 +18,7 @@
 
 #ifdef _WIN32
 static UtunNode* g_ctrl_node = nullptr;
+static MainWindow* g_mainWindow = nullptr;
 
 static DWORD count_threads(void) {
     DWORD pid = GetCurrentProcessId(), count = 0;
@@ -34,7 +35,12 @@ static DWORD count_threads(void) {
 
 static BOOL WINAPI console_ctrl_handler(DWORD dwCtrlType) {
     if (dwCtrlType == CTRL_C_EVENT || dwCtrlType == CTRL_BREAK_EVENT) {
-        if (g_ctrl_node) g_ctrl_node->requestStop();
+        if (g_mainWindow)
+            QMetaObject::invokeMethod(g_mainWindow, [g_mainWindow] {
+                g_mainWindow->requestShutdown();
+            }, Qt::QueuedConnection);
+        else if (g_ctrl_node)
+            g_ctrl_node->requestStop();
         return TRUE;
     }
     return FALSE;
@@ -149,6 +155,7 @@ int main(int argc, char *argv[]) {
 
 #ifdef _WIN32
     g_ctrl_node = w.utunNode();
+    g_mainWindow = &w;
     SetConsoleCtrlHandler(console_ctrl_handler, TRUE);
 #endif
 
diff --git a/tools/chatgui/src/mainwindow.cpp b/tools/chatgui/src/mainwindow.cpp
index c878b9c4..be47d509 100644
--- a/tools/chatgui/src/mainwindow.cpp
+++ b/tools/chatgui/src/mainwindow.cpp
@@ -28,6 +28,7 @@ extern "C" {
 #include <QSplitter>
 #include <QCloseEvent>
 #include <QApplication>
+#include <QScreen>
 #include <QClipboard>
 #include <QStyle>
 #include <QMessageBox>
@@ -38,6 +39,7 @@ extern "C" {
 #include <cmath>
 #include <QJsonDocument>
 #include <QJsonObject>
+#include <csignal>
 
 extern "C" {
 #include "chat/chat_core.h"
@@ -49,12 +51,16 @@ void chat_core_save_ui_state_trampoline(void* arg);
 
 static MainWindow* s_mainWindow = nullptr;
 
-/* Сохранение last_channel_id в БД (ui_state), как все остальные UI-настройки.
-   Пишется из utun-потока через trampoline, чтобы не трогать sqlite из GUI-потока. */
-static void saveLastChannelId(const QString& channelId) {
-    const char key[] = "last_channel_id";
-    QByteArray val = channelId.toUtf8();
-    size_t klen = sizeof(key) - 1, vlen = (size_t)val.size(), total = klen + 1 + vlen + 1;
+#ifndef _WIN32
+static volatile std::sig_atomic_t g_signalFlag = 0;
+static void unixSignalHandler(int) { g_signalFlag = 1; }
+#endif
+
+/* Сохранение key/value в БД (ui_state). Пишется из utun-потока через trampoline,
+   чтобы не трогать sqlite из GUI-потока. Буфер формата key\0value\0, ≤256 байт. */
+static void postUiStateKv(const char* key, const QString& value) {
+    QByteArray val = value.toUtf8();
+    size_t klen = strlen(key), vlen = (size_t)val.size(), total = klen + 1 + vlen + 1;
     if (total > 256) return;
     void* arg = u_malloc(total);
     memcpy(arg, key, klen + 1);
@@ -62,6 +68,10 @@ static void saveLastChannelId(const QString& channelId) {
     gui_bridge_post_uasync_fn(chat_core_save_ui_state_trampoline, arg);
 }
 
+static void saveLastChannelId(const QString& channelId) {
+    postUiStateKv("last_channel_id", channelId);
+}
+
 static void onMsgReceivedCallback(const char* ch_id, int ch_id_len, uint64_t author) {
     if (s_mainWindow)
         s_mainWindow->onMessageReceived(ch_id, ch_id_len, author);
@@ -136,6 +146,14 @@ MainWindow::MainWindow(QWidget *parent, DbManager* db, const QString& cfgPath,
         setupConnects();
     }
     connect(m_autoPlayTimer, &QTimer::timeout, this, &MainWindow::autoPlayTimerTick);
+
+#ifndef _WIN32
+    std::signal(SIGINT, unixSignalHandler);
+    std::signal(SIGTERM, unixSignalHandler);
+    m_shutdownTimer = new QTimer(this);
+    connect(m_shutdownTimer, &QTimer::timeout, this, &MainWindow::onShutdownCheck);
+    m_shutdownTimer->start(200);
+#endif
 }
 
 MainWindow::~MainWindow() {
@@ -167,6 +185,7 @@ MainWindow::~MainWindow() {
 
 void MainWindow::setupUi() {
     auto *splitter = new QSplitter(Qt::Horizontal, this);
+    m_splitter = splitter;
 
     m_channelList = new ChannelList(m_db, splitter);
     m_recorder = new AudioRecorder(this);
@@ -186,6 +205,49 @@ void MainWindow::setupUi() {
     setCentralWidget(splitter);
 }
 
+void MainWindow::saveWindowGeometry() {
+    QRect g = normalGeometry();
+    if (g.isEmpty()) g = geometry();
+    postUiStateKv("window_geometry",
+        QStringLiteral("%1,%2,%3,%4").arg(g.width()).arg(g.height()).arg(g.x()).arg(g.y()));
+    postUiStateKv("window_maximized", isMaximized() ? QStringLiteral("1") : QStringLiteral("0"));
+
+    if (m_splitter) {
+        const QList<int> sizes = m_splitter->sizes();
+        if (sizes.size() == 3)
+            postUiStateKv("window_splitter",
+                QStringLiteral("%1,%2,%3").arg(sizes[0]).arg(sizes[1]).arg(sizes[2]));
+    }
+}
+
+void MainWindow::restoreWindowGeometry() {
+    if (!m_db) return;
+    const QStringList p = m_db->getUiState("window_geometry").split(',');
+    if (p.size() != 4) return;
+    int w = p[0].toInt(), h = p[1].toInt(), x = p[2].toInt(), y = p[3].toInt();
+    if (w <= 0 || h <= 0) return;
+
+    QRect target(x, y, w, h);
+    bool visible = false;
+    for (const QScreen* s : QGuiApplication::screens()) {
+        if (s->availableGeometry().intersects(target)) { visible = true; break; }
+    }
+    if (!visible) target.moveTo(0, 0);
+
+    setGeometry(target);
+    if (m_db->getUiStateInt("window_maximized", 0))
+        showMaximized();
+
+    if (m_splitter) {
+        const QStringList sp = m_db->getUiState("window_splitter").split(',');
+        if (sp.size() == 3) {
+            int s0 = sp[0].toInt(), s1 = sp[1].toInt(), s2 = sp[2].toInt();
+            if (s0 > 0 && s1 > 0 && s2 > 0)
+                m_splitter->setSizes({s0, s1, s2});
+        }
+    }
+}
+
 void MainWindow::setupNode() {
     m_node = new UtunNode(this);
     connect(m_node, &UtunNode::error, this, [](const QString& msg) {
@@ -247,12 +309,14 @@ void MainWindow::setupSoundFromConfig() {
     QString baseDir = QDir::isAbsolutePath(soundDir) ? soundDir : binDir.absoluteFilePath(soundDir);
     auto resolvePath = [&baseDir](const QString& f) { return f.isEmpty() ? QString() : QDir::cleanPath(baseDir + "/" + f); };
 
-    struct { const char* name; QString file; } events[] = {
-        {"msg_incoming", msgInFile}, {"msg_outgoing", msgOutFile},
-        {"connect", connectFile},    {"disconnect", disconnectFile},
-    };
-    for (auto& e : events) { if (!e.file.isEmpty()) sm->loadSound(e.name, resolvePath(e.file)); }
+    if (msgInFile.isEmpty())
+        sm->loadSound("msg_incoming", ":/sounds/msg_incoming.mp3");
+    else
+        sm->loadSound("msg_incoming", resolvePath(msgInFile));
 
+    if (!msgOutFile.isEmpty())  sm->loadSound("msg_outgoing", resolvePath(msgOutFile));
+    if (!connectFile.isEmpty()) sm->loadSound("connect", resolvePath(connectFile));
+    if (!disconnectFile.isEmpty()) sm->loadSound("disconnect", resolvePath(disconnectFile));
     if (m_db && m_db->isOpen()) {
         sm->setEnabled(m_db->getUiStateInt("sound_enabled", 1));
         sm->setVolume(m_db->getUiStateInt("sound_volume", 80) / 100.0f);
@@ -307,6 +371,7 @@ void MainWindow::setupBridgeCallbacks() {
         if (!s_mainWindow || !s_mainWindow->m_db) return;
         s_mainWindow->m_db->setDb(chat_core_get_db());
         s_mainWindow->m_channelList->loadChannels();
+        s_mainWindow->restoreWindowGeometry();
         QString lastCid = s_mainWindow->m_db->getUiState("last_channel_id");
         if (!lastCid.isEmpty()) {
             /* восстанавливаем канал только если он реально существует в БД —
@@ -402,9 +467,7 @@ void MainWindow::setupTray() {
     });
 
     QAction *quitAction = m_trayMenu->addAction("Quit");
-    connect(quitAction, &QAction::triggered, this, [this]() {
-        if (m_node) m_node->requestStop();
-    });
+    connect(quitAction, &QAction::triggered, this, &MainWindow::requestShutdown);
 
     m_trayIcon->setContextMenu(m_trayMenu);
 
@@ -416,12 +479,24 @@ void MainWindow::setupTray() {
 
 void MainWindow::closeEvent(QCloseEvent *event) {
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "MainWindow: closeEvent — hiding to tray");
+    saveWindowGeometry();
     hide();
     m_trayIcon->showMessage("vibechat", "Application minimized to tray.",
                              QSystemTrayIcon::Information, 2000);
     event->ignore();
 }
 
+void MainWindow::requestShutdown() {
+    DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "MainWindow: requestShutdown — saving geometry and stopping node");
+    saveWindowGeometry();
+    if (m_node) m_node->requestStop();
+}
+
+void MainWindow::onShutdownCheck() {
+    if (g_signalFlag)
+        requestShutdown();
+}
+
 void MainWindow::onTrayActivated(QSystemTrayIcon::ActivationReason reason) {
     if (reason == QSystemTrayIcon::Trigger ||
         reason == QSystemTrayIcon::DoubleClick) {
diff --git a/tools/chatgui/src/mainwindow.h b/tools/chatgui/src/mainwindow.h
index 0396bd05..e638fa3c 100644
--- a/tools/chatgui/src/mainwindow.h
+++ b/tools/chatgui/src/mainwindow.h
@@ -11,6 +11,7 @@ class ChannelList;
 class MessageList;
 class AccountList;
 class DbManager;
+class QSplitter;
 class UtunNode;
 class AudioRecorder;
 class ConnMonitorWindow;
@@ -59,22 +60,27 @@ public:
     void onChannelPeersOnline(const char* ch_id, int ch_id_len, uint16_t online);
     void reloadChannels();
     void onAttachmentDownloadedForAutoPlay(const QString& chId, int64_t msgId);
+    void requestShutdown();
     UtunNode* utunNode() const { return m_node; }
 
 private:
     void setupUi();
+    void saveWindowGeometry();
+    void restoreWindowGeometry();
     void setupTray();
     void setupNode();
     void setupMessaging();
     void setupSoundFromConfig();
     void setupBridgeCallbacks();
     void setupConnects();
+    void onShutdownCheck();
     void autoPlayCheckNewMessage(const QString& channelId);
     QString autoPlayMediaDir() const;
 
     ChannelList     *m_channelList;
     MessageList     *m_messageList;
     AccountList     *m_accountList;
+    QSplitter       *m_splitter = nullptr;
     QSystemTrayIcon *m_trayIcon;
     QMenu           *m_trayMenu;
     DbManager       *m_db;
@@ -93,5 +99,6 @@ private:
 
     QQueue<AutoPlayItem> m_autoPlayQueue;
     QTimer*              m_autoPlayTimer = nullptr;
+    QTimer*              m_shutdownTimer = nullptr;
     QSet<int64_t>        m_autoPlayDownloading;  /* msgIds with download in progress */
 };
diff --git a/tools/chatgui/src/memberlistmodel.cpp b/tools/chatgui/src/memberlistmodel.cpp
index 4c68d011..9321e8cf 100644
--- a/tools/chatgui/src/memberlistmodel.cpp
+++ b/tools/chatgui/src/memberlistmodel.cpp
@@ -51,6 +51,7 @@ QVariant MemberListModel::data(const QModelIndex& index, int role) const {
                    QString("%1").arg(it->nodeId, 16, 16, QChar('0'));
         if (role == Qt::UserRole + 2) return it->isSelf;
         if (role == Qt::UserRole + 3) return it->flags;
+        if (role == Qt::UserRole + 4) return (bool)it->storage;
         return {};
     }
     return {};
@@ -94,6 +95,7 @@ static void deserialize_member(const uint8_t* src, MemberListItem& item) {
     item.rtt     = (rtt == 0xFFFF) ? -1 : (int)rtt;
     int nat      = (int)src[13];
     item.natType = (nat == 0xFF) ? -1 : nat;
+    item.storage = src[14];
     item.online  = (online != 0);
 
     char name[64];
diff --git a/tools/chatgui/src/memberlistmodel.h b/tools/chatgui/src/memberlistmodel.h
index 501b4aaa..ca69f797 100644
--- a/tools/chatgui/src/memberlistmodel.h
+++ b/tools/chatgui/src/memberlistmodel.h
@@ -19,6 +19,7 @@ struct MemberListItem {
     int     rtt = -1;
     int     natType = -1;
     uint8_t flags = 0;
+    uint8_t storage = 0;
 };
 
 class MemberListModel : public QAbstractListModel {
diff --git a/tools/chatgui/src/memberpropsdialog.cpp b/tools/chatgui/src/memberpropsdialog.cpp
index 474b0afe..79665c65 100644
--- a/tools/chatgui/src/memberpropsdialog.cpp
+++ b/tools/chatgui/src/memberpropsdialog.cpp
@@ -47,6 +47,7 @@ MemberPropsDialog::MemberPropsDialog(DbManager* db, const QString& channelId,
     QString curNick;
     bool curVerified = false;
     bool curDeleted = false;
+    bool curStorage = false;
     m_currentVer = 0;
     if (m_db->m_db) {
         QString tbl = m_db->peersTableName(channelId);
@@ -65,6 +66,8 @@ MemberPropsDialog::MemberPropsDialog(DbManager* db, const QString& channelId,
                     if (vr) { vr += 12; curVerified = (strncmp(vr, "yes", 3) == 0); }
                     const char* dl = strstr(tags, "\"deleted\":\"");
                     if (dl) { dl += 11; curDeleted = (strncmp(dl, "yes", 3) == 0); }
+                    const char* sg = strstr(tags, "\"storage\":\"");
+                    if (sg) { sg += 11; curStorage = (strncmp(sg, "yes", 3) == 0); }
                 }
                 curNick = DbManager::colText(st, 1);
             }
@@ -100,6 +103,7 @@ MemberPropsDialog::MemberPropsDialog(DbManager* db, const QString& channelId,
     layout->addWidget(m_superCb);
 
     m_storageCb = new QCheckBox("Storage (priority attachment keeper)", this);
+    m_storageCb->setChecked(curStorage);
     m_storageCb->setEnabled(haveKey);
     layout->addWidget(m_storageCb);
 
@@ -180,7 +184,7 @@ void MemberPropsDialog::onSave() {
     /* signed fields — через chat_member_tags_commit_trampoline */
     if (m_edPrivkey.size() != 32) { accept(); return; }
 
-    int ver = m_currentVer + 1;
+    int ver = m_currentVer;
     QString json;
     json += QString("{\"ver\":\"%1\"").arg(ver);
     json += QString(",\"admin\":\"%1\"").arg(m_adminCb->isChecked() ? "yes" : "no");
diff --git a/tools/chatgui/src/sound_manager.cpp b/tools/chatgui/src/sound_manager.cpp
index 0668aa43..cb6c14f0 100644
--- a/tools/chatgui/src/sound_manager.cpp
+++ b/tools/chatgui/src/sound_manager.cpp
@@ -131,13 +131,17 @@ bool SoundManager::loadSound(const QString& name, const QString& filePath) {
 }
 
 void SoundManager::play(const QString& name) {
-    if (!m_enabled || !m_initialized) return;
+    if (!m_enabled) return;
+    if (!m_initialized) { DEBUG_WARN(DEBUG_CATEGORY_DEBUG, "SoundManager::play: not initialized"); return; }
 
     EventSettings es = m_eventSettings.value(name);
     if (!es.enabled) return;
 
     auto it = m_sounds.find(name);
-    if (it == m_sounds.end()) return;
+    if (it == m_sounds.end()) {
+        DEBUG_WARN(DEBUG_CATEGORY_DEBUG, "SoundManager::play: sound '%s' not loaded", qPrintable(name));
+        return;
+    }
 
     ma_sound* s = it->sound;
     float effectiveVolume = m_volume * es.volume;
diff --git a/tools/chatgui/transport/node_config.cpp b/tools/chatgui/transport/node_config.cpp
index 76637069..7511e76f 100644
--- a/tools/chatgui/transport/node_config.cpp
+++ b/tools/chatgui/transport/node_config.cpp
@@ -125,6 +125,7 @@ static bool isSectionValid(const QString& section) {
     if (section == "tcp_proxy_client") return true;
     if (section == "tcp_proxy_server") return true;
     if (section == "ntp") return true;
+    if (section == "chat" || section == "chatserver") return true;
     return false;
 }
 
diff --git a/tools/chatgui/transport/utun_node.cpp b/tools/chatgui/transport/utun_node.cpp
index 443b8fcd..d4977d3e 100644
--- a/tools/chatgui/transport/utun_node.cpp
+++ b/tools/chatgui/transport/utun_node.cpp
@@ -2,7 +2,6 @@
 #include "utun_node.h"
 #include <cinttypes>
 #include <QDir>
-#include <csignal>
 #include "../../lib/socket_compat.h"
 
 // === C headers ===
@@ -34,11 +33,6 @@ extern "C" {
 
 static UtunNode* g_currentNode = nullptr;
 
-static void signal_handler(int sig) {
-    (void)sig;
-    if (g_currentNode) g_currentNode->requestStop();
-}
-
 UtunNode::UtunNode(QObject* parent) : QObject(parent) {}
 
 UtunNode::~UtunNode() {
@@ -272,9 +266,6 @@ void UtunNode::runLoop() {
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "chat_core + chat_sync initialized");
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "utun_node: entering poll loop");
 
-    signal(SIGINT, signal_handler);
-    signal(SIGTERM, signal_handler);
-
     while (!m_stop) {
         uasync_poll(ua, 100);
     }
@@ -287,9 +278,6 @@ void UtunNode::runLoop() {
         m_instance = nullptr;
     }
 
-    signal(SIGINT, SIG_DFL);
-    signal(SIGTERM, SIG_DFL);
-
     DEBUG_DEBUG(DEBUG_CATEGORY_GENERAL, "runLoop: emitting stopped");
     QMetaObject::invokeMethod(this, [this] { emit stopped(); });
 }