diff --git a/build.gradle b/build.gradle
index 2333809..a7642f8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -188,6 +188,25 @@ tasks.register('deployServer', JavaExec) {
     dependsOn testClasses
 }
 
+tasks.register('deployServerNoCleanNoTests', JavaExec) {
+    group = "!!deployment"
+    description = "Build → upload to server → restart service (no data clean, no IT tests)"
+
+    classpath = sourceSets.test.runtimeClasspath
+    mainClass = "test.it.IT_DeployRestartNoCleanNoTestsMain"
+
+    // можно переопределить при запуске:
+    // ./gradlew deployServerNoCleanNoTests -Dit.remoteHost=...
+    dependsOn shadowJar
+    systemProperty "it.remoteHost", System.getProperty("it.remoteHost", "194.87.0.247")
+    systemProperty "it.remoteUser", System.getProperty("it.remoteUser", "user")
+    systemProperty "it.remoteDir",  System.getProperty("it.remoteDir", "/home/user/docker/shine-server")
+    systemProperty "it.service", System.getProperty("it.service", "shine-server")
+    systemProperty "it.localJar", System.getProperty("it.localJar", "build/libs/shine-server.jar")
+
+    dependsOn testClasses
+}
+
 tasks.register('deployWEB', Exec) {
     group = "!!deployment"
     description = "Deploy WEB via deploy_shine-PWA.sh"
diff --git a/shine-UI/firebase-messaging-sw.js b/shine-UI/firebase-messaging-sw.js
index cc6f322..11df433 100644
--- a/shine-UI/firebase-messaging-sw.js
+++ b/shine-UI/firebase-messaging-sw.js
@@ -53,3 +53,25 @@ self.addEventListener('push', (event) => {
     }),
   ]));
 });
+
+self.addEventListener('notificationclick', (event) => {
+  event.notification?.close();
+
+  event.waitUntil((async () => {
+    const allClients = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
+    const existing = allClients.find((client) => {
+      try {
+        return client.url.includes('/index.html') || client.url.endsWith('/');
+      } catch {
+        return false;
+      }
+    });
+
+    if (existing) {
+      await existing.focus();
+      return;
+    }
+
+    await self.clients.openWindow('./index.html');
+  })());
+});
diff --git a/shine-UI/js/app.js b/shine-UI/js/app.js
index 076846a..209c696 100644
--- a/shine-UI/js/app.js
+++ b/shine-UI/js/app.js
@@ -1,6 +1,7 @@
 import { navigate, getRoute, PRE_AUTH_PAGES } from './router.js';
 import { renderToolbar } from './components/toolbar.js';
 import { captureClientError, setClientErrorTransport } from './services/client-error-reporter.js';
+import { initPwaInstallPromptHandling } from './services/pwa-install-service.js';
 import { initPwaPush } from './services/pwa-push-service.js';
 import { handleIncomingCallInvite, handleIncomingCallSignal } from './services/call-service.js';
 import {
@@ -96,6 +97,7 @@ let pingIntervalId = null;
 let sessionRuntimeStarted = false;
 
 setClientErrorTransport((payload) => authService.reportClientError(payload));
+initPwaInstallPromptHandling();
 
 function showGlobalErrorAlert(title, details = {}) {
   const lines = [title];
diff --git a/shine-UI/js/pages/settings-view.js b/shine-UI/js/pages/settings-view.js
index 4d575dc..dc1be71 100644
--- a/shine-UI/js/pages/settings-view.js
+++ b/shine-UI/js/pages/settings-view.js
@@ -1,4 +1,12 @@
 import { renderHeader } from '../components/header.js';
+import { addAppLogEntry, authService, closeCurrentSessionAndSignOut, state } from '../state.js';
+import {
+  canInstallPwa,
+  isStandalonePwaMode,
+  onPwaInstallAvailabilityChange,
+  promptPwaInstall,
+} from '../services/pwa-install-service.js';
+import { initPwaPush } from '../services/pwa-push-service.js';
 
 export const pageMeta = { id: 'settings-view', title: 'Настройки' };
 
@@ -20,6 +28,8 @@ export function render({ navigate }) {
     <button class="text-btn" type="button" id="settings-servers">Настройки серверов</button>
     <button class="text-btn" type="button" id="settings-language">Язык / Language</button>
     <button class="text-btn" type="button" id="settings-app-log">Лог приложения</button>
+    <button class="text-btn" type="button" id="settings-signout">Завершить текущий сеанс</button>
+    <button class="text-btn" type="button" id="settings-pwa-install">Зарегистрировать PWA</button>
   `;
 
   card.querySelector('#settings-device').addEventListener('click', () => navigate('device-view'));
@@ -27,6 +37,89 @@ export function render({ navigate }) {
   card.querySelector('#settings-language').addEventListener('click', () => navigate('language-view'));
   card.querySelector('#settings-app-log').addEventListener('click', () => navigate('app-log-view'));
 
+  const signOutBtn = card.querySelector('#settings-signout');
+  const pwaInstallBtn = card.querySelector('#settings-pwa-install');
+
+  const syncPwaButtonLabel = () => {
+    if (isStandalonePwaMode()) {
+      pwaInstallBtn.textContent = 'PWA установлено (проверить WebPush)';
+      return;
+    }
+    if (canInstallPwa()) {
+      pwaInstallBtn.textContent = 'Зарегистрировать PWA';
+      return;
+    }
+    pwaInstallBtn.textContent = 'Как установить PWA';
+  };
+
+  const unsubscribeInstallAvailability = onPwaInstallAvailabilityChange(() => {
+    syncPwaButtonLabel();
+  });
+  syncPwaButtonLabel();
+
+  signOutBtn.addEventListener('click', async () => {
+    const confirmed = window.confirm(
+      'Завершить текущую сессию на сервере, отключиться, очистить локальные данные и перейти на стартовый экран?'
+    );
+    if (!confirmed) return;
+
+    signOutBtn.disabled = true;
+    try {
+      addAppLogEntry({
+        level: 'info',
+        source: 'session',
+        message: `Запрошено завершение текущей сессии: ${state.session.sessionId || 'unknown'}`,
+      });
+      await closeCurrentSessionAndSignOut({
+        infoMessage: 'Сеанс завершён. Выполните вход заново.',
+      });
+    } finally {
+      signOutBtn.disabled = false;
+    }
+  });
+
+  pwaInstallBtn.addEventListener('click', async () => {
+    pwaInstallBtn.disabled = true;
+    try {
+      await initPwaPush({
+        authService,
+        onLog: (entry) => addAppLogEntry(entry),
+      });
+
+      if (canInstallPwa()) {
+        const result = await promptPwaInstall();
+        const accepted = result.outcome === 'accepted';
+        addAppLogEntry({
+          level: 'info',
+          source: 'pwa-install',
+          message: accepted ? 'Пользователь принял установку PWA' : 'Пользователь отклонил установку PWA',
+          details: { outcome: result.outcome || 'unknown' },
+        });
+        if (accepted) {
+          window.alert('Установка PWA подтверждена. Проверьте приложение на главном экране устройства.');
+        }
+      } else if (!isStandalonePwaMode()) {
+        window.alert('Для установки откройте меню браузера и выберите "Установить приложение" или "Добавить на главный экран".');
+      } else {
+        window.alert('PWA уже установлено. WebPush перерегистрирован.');
+      }
+    } catch (error) {
+      addAppLogEntry({
+        level: 'warn',
+        source: 'pwa-install',
+        message: 'Не удалось зарегистрировать PWA/WebPush',
+        details: { error: error?.message || 'unknown' },
+      });
+      window.alert(`Ошибка регистрации PWA: ${error?.message || 'unknown'}`);
+    } finally {
+      pwaInstallBtn.disabled = false;
+      syncPwaButtonLabel();
+    }
+  });
+
   screen.append(card);
+  screen.cleanup = () => {
+    unsubscribeInstallAvailability();
+  };
   return screen;
 }
diff --git a/shine-UI/js/services/message-store.js b/shine-UI/js/services/message-store.js
index 70e42ff..dadc025 100644
--- a/shine-UI/js/services/message-store.js
+++ b/shine-UI/js/services/message-store.js
@@ -48,3 +48,12 @@ export async function listStoredMessages() {
     req.onerror = () => reject(req.error || new Error('IndexedDB getAll failed'));
   }));
 }
+
+export async function clearStoredMessages() {
+  await new Promise((resolve, reject) => {
+    const request = indexedDB.deleteDatabase(DB_NAME);
+    request.onsuccess = () => resolve();
+    request.onerror = () => reject(request.error || new Error('IndexedDB delete failed'));
+    request.onblocked = () => reject(new Error('IndexedDB delete blocked'));
+  });
+}
diff --git a/shine-UI/js/services/pwa-install-service.js b/shine-UI/js/services/pwa-install-service.js
new file mode 100644
index 0000000..878d486
--- /dev/null
+++ b/shine-UI/js/services/pwa-install-service.js
@@ -0,0 +1,66 @@
+let initialized = false;
+let deferredInstallPrompt = null;
+const listeners = new Set();
+
+function notifyAvailability() {
+  const canInstall = Boolean(deferredInstallPrompt);
+  listeners.forEach((listener) => {
+    try {
+      listener(canInstall);
+    } catch {
+      // ignore listener errors
+    }
+  });
+}
+
+export function initPwaInstallPromptHandling() {
+  if (initialized) return;
+  initialized = true;
+
+  window.addEventListener('beforeinstallprompt', (event) => {
+    event.preventDefault();
+    deferredInstallPrompt = event;
+    notifyAvailability();
+  });
+
+  window.addEventListener('appinstalled', () => {
+    deferredInstallPrompt = null;
+    notifyAvailability();
+  });
+}
+
+export function canInstallPwa() {
+  return Boolean(deferredInstallPrompt);
+}
+
+export function isStandalonePwaMode() {
+  return (
+    window.matchMedia?.('(display-mode: standalone)')?.matches ||
+    window.navigator?.standalone === true
+  );
+}
+
+export async function promptPwaInstall() {
+  if (!deferredInstallPrompt) {
+    return { supported: false, outcome: '' };
+  }
+
+  const promptEvent = deferredInstallPrompt;
+  deferredInstallPrompt = null;
+  notifyAvailability();
+
+  await promptEvent.prompt();
+  const choice = await promptEvent.userChoice;
+  return {
+    supported: true,
+    outcome: String(choice?.outcome || ''),
+  };
+}
+
+export function onPwaInstallAvailabilityChange(handler) {
+  if (typeof handler !== 'function') return () => {};
+  listeners.add(handler);
+  return () => {
+    listeners.delete(handler);
+  };
+}
diff --git a/shine-UI/js/state.js b/shine-UI/js/state.js
index f7301b8..f596dfc 100644
--- a/shine-UI/js/state.js
+++ b/shine-UI/js/state.js
@@ -1,11 +1,15 @@
-import { chatMessages, wallet } from './mock-data.js';
+import { wallet } from './mock-data.js';
 import { AuthService } from './services/auth-service.js';
 import { clearClientAuthData } from './services/key-vault.js';
-import { listStoredMessages, putStoredMessage } from './services/message-store.js';
+import { clearStoredMessages, listStoredMessages, putStoredMessage } from './services/message-store.js';
 
 const clone = (value) => JSON.parse(JSON.stringify(value));
 const SESSION_STORAGE_KEY = 'shine-ui-current-session-v1';
 const REACTIONS_STORAGE_KEY = 'shine-ui-message-reactions-v2';
+const WEB_PUSH_SUBSCRIPTION_KEY = 'shine-ui-webpush-subscription-v1';
+const CHANNEL_NOTIFY_KEY = 'shine-channels-notify-v1';
+const CHANNELS_DEMO_KEY = 'shine-channels-demo';
+const CREATE_CHANNEL_FLASH_KEY = 'shine-channels-create-success';
 const MAX_APP_LOG_ENTRIES = 500;
 const INVALID_SESSION_CODES = new Set([
   'NOT_AUTHENTICATED',
@@ -121,13 +125,36 @@ function clearStoredSession() {
   }
 }
 
+function clearBrowserClientData() {
+  const localKeys = [
+    SESSION_STORAGE_KEY,
+    REACTIONS_STORAGE_KEY,
+    WEB_PUSH_SUBSCRIPTION_KEY,
+    CHANNEL_NOTIFY_KEY,
+    CHANNELS_DEMO_KEY,
+  ];
+  localKeys.forEach((key) => {
+    try {
+      localStorage.removeItem(key);
+    } catch {
+      // ignore
+    }
+  });
+
+  try {
+    sessionStorage.removeItem(CREATE_CHANNEL_FLASH_KEY);
+  } catch {
+    // ignore
+  }
+}
+
 function createInitialState({ withStoredSession = true } = {}) {
   const storedSession = withStoredSession ? loadStoredSession() : null;
   const storedReactions = loadStoredReactions();
   const initialShineServer = LOCAL_WS_OVERRIDE_URL || DEFAULT_SHINE_SERVER;
 
   return {
-    chats: clone(chatMessages),
+    chats: {},
     contacts: [],
     appLog: [],
     incomingDedup: {},
@@ -504,9 +531,16 @@ export async function refreshSessions() {
 function resetStateForSignedOut() {
   const next = createInitialState({ withStoredSession: false });
   state.chats = next.chats;
+  state.contacts = next.contacts;
+  state.appLog = next.appLog;
+  state.incomingDedup = next.incomingDedup;
+  state.knownMessageKeys = next.knownMessageKeys;
+  state.outgoingTempSeq = next.outgoingTempSeq;
   state.notificationsTab = next.notificationsTab;
+  state.pageLabelCollapsed = next.pageLabelCollapsed;
   state.session = next.session;
   state.startHint = next.startHint;
+  state.entrySettings = next.entrySettings;
   state.registrationDraft = next.registrationDraft;
   state.loginDraft = next.loginDraft;
   state.registrationPayment = next.registrationPayment;
@@ -522,21 +556,48 @@ function resetStateForSignedOut() {
 
 export async function terminateCurrentSession({ infoMessage = '' } = {}) {
   clearStoredSession();
+  clearBrowserClientData();
   resetStateForSignedOut();
   authService.close();
   try {
-    await clearClientAuthData();
+    await Promise.all([
+      clearClientAuthData(),
+      clearStoredMessages(),
+    ]);
   } catch {
     // ignore cleanup errors in prototype mode
   }
   if (infoMessage) {
     state.startHint = infoMessage;
   }
+  try {
+    await authService.reconnect(state.entrySettings.shineServer);
+  } catch {
+    // ignore reconnect errors on sign out
+  }
   if (onSessionReset) {
     onSessionReset();
   }
 }
 
+export async function closeCurrentSessionAndSignOut({ infoMessage = '' } = {}) {
+  const currentSessionId = String(state.session.sessionId || '').trim();
+  try {
+    if (state.session.isAuthorized && currentSessionId) {
+      await authService.closeSession(currentSessionId);
+    }
+  } catch (error) {
+    addAppLogEntry({
+      level: 'warn',
+      source: 'session',
+      message: 'Не удалось завершить текущую сессию на сервере',
+      details: { sessionId: currentSessionId, error: error?.message || 'unknown' },
+    });
+  }
+
+  await terminateCurrentSession({ infoMessage });
+}
+
 export function refreshRegistrationBalance() {
   const next = (0.005 + Math.random() * 0.03).toFixed(4);
   state.registrationPayment.balanceSOL = next;
diff --git a/src/test/java/test/it/IT_DeployRestartNoCleanNoTestsMain.java b/src/test/java/test/it/IT_DeployRestartNoCleanNoTestsMain.java
new file mode 100644
index 0000000..ca0adc9
--- /dev/null
+++ b/src/test/java/test/it/IT_DeployRestartNoCleanNoTestsMain.java
@@ -0,0 +1,128 @@
+package test.it;
+
+import java.io.File;
+import java.util.Enumeration;
+import java.util.Objects;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public class IT_DeployRestartNoCleanNoTestsMain {
+
+    // ====== НАСТРОЙКИ (можно переопределять systemProperty) ======
+    private static final String REMOTE_HOST = System.getProperty("it.remoteHost", "194.87.0.247");
+    private static final String REMOTE_USER = System.getProperty("it.remoteUser", "user");
+
+    private static final String REMOTE_DIR = System.getProperty("it.remoteDir", "/home/user/docker/shine-server");
+    private static final String REMOTE_JAR = REMOTE_DIR + "/shine-server.jar";
+
+    private static final String SERVICE_NAME = System.getProperty("it.service", "shine-server");
+    private static final String LOCAL_JAR = System.getProperty("it.localJar", "build/libs/shine-server.jar");
+
+    public static void main(String[] args) {
+        // 1) stop service на сервере
+        sshStrict("sudo systemctl stop " + SERVICE_NAME + " || true");
+
+        // 2) upload jar -> .new
+        validateLocalFatJarOrThrow(LOCAL_JAR);
+        sshStrict("mkdir -p " + q(REMOTE_DIR));
+        scpStrict(LOCAL_JAR, REMOTE_JAR + ".new");
+        verifyRemoteNewJarOrThrow(REMOTE_JAR + ".new");
+
+        // 3) заменить jar атомарно
+        sshStrict("mv -f " + q(REMOTE_JAR + ".new") + " " + q(REMOTE_JAR));
+
+        // 4) start service
+        sshStrict("sudo systemctl start " + SERVICE_NAME);
+
+        // 5) дождаться поднятия
+        waitRemotePort7070();
+
+        System.out.println("deploy_no_clean_no_tests_done");
+    }
+
+    private static void waitRemotePort7070() {
+        for (int i = 0; i < 50; i++) {
+            int code = ssh("ss -ltnp | grep -q ':7070'");
+            if (code == 0) return;
+            sleepMs(200);
+        }
+        throw new RuntimeException("Remote port 7070 did not start in time on " + REMOTE_HOST);
+    }
+
+    private static void sshStrict(String remoteCmd) {
+        int code = ssh(remoteCmd);
+        if (code != 0) throw new RuntimeException("SSH command failed (" + code + "): " + remoteCmd);
+    }
+
+    private static int ssh(String remoteCmd) {
+        String cmd = "ssh " + REMOTE_USER + "@" + REMOTE_HOST + " " + q("bash -lc " + q(remoteCmd));
+        return sh(cmd);
+    }
+
+    private static void scpStrict(String local, String remote) {
+        Objects.requireNonNull(local);
+        Objects.requireNonNull(remote);
+        int code = sh("scp -p " + q(local) + " " + REMOTE_USER + "@" + REMOTE_HOST + ":" + q(remote));
+        if (code != 0) throw new RuntimeException("SCP failed (" + code + ")");
+    }
+
+    private static int sh(String cmd) {
+        try {
+            Process p = new ProcessBuilder("bash", "-lc", cmd).inheritIO().start();
+            return p.waitFor();
+        } catch (Exception e) {
+            throw new RuntimeException("Command error: " + cmd, e);
+        }
+    }
+
+    private static String q(String s) {
+        return "'" + s.replace("'", "'\"'\"'") + "'";
+    }
+
+    private static void sleepMs(long ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        }
+    }
+
+    private static void validateLocalFatJarOrThrow(String localJarPath) {
+        File jar = new File(localJarPath);
+        if (!jar.isFile()) {
+            throw new RuntimeException("Local jar not found: " + localJarPath);
+        }
+        long size = jar.length();
+        if (size < 10L * 1024L * 1024L) {
+            throw new RuntimeException("Local jar is too small for fat-jar: " + size + " bytes (" + localJarPath + ")");
+        }
+        try (JarFile jf = new JarFile(jar)) {
+            boolean hasJetty = false;
+            boolean hasBc = false;
+            Enumeration<JarEntry> entries = jf.entries();
+            while (entries.hasMoreElements()) {
+                String name = entries.nextElement().getName();
+                if (!hasJetty && "org/eclipse/jetty/server/Handler.class".equals(name)) hasJetty = true;
+                if (!hasBc && "org/bouncycastle/jce/provider/BouncyCastleProvider.class".equals(name)) hasBc = true;
+                if (hasJetty && hasBc) break;
+            }
+            if (!hasJetty || !hasBc) {
+                throw new RuntimeException(
+                        "Local jar doesn't look like fat-jar (missing deps). hasJetty=" + hasJetty + ", hasBC=" + hasBc
+                );
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to inspect local jar: " + localJarPath, e);
+        }
+    }
+
+    private static void verifyRemoteNewJarOrThrow(String remoteJarNewPath) {
+        String cmd = "test -f " + q(remoteJarNewPath) + " && " +
+                "sz=$(stat -c %s " + q(remoteJarNewPath) + ") && " +
+                "echo remote_new_size=$sz && test \"$sz\" -ge 10485760";
+        int code = ssh(cmd);
+        if (code != 0) {
+            throw new RuntimeException("Remote uploaded jar is missing or too small: " + remoteJarNewPath);
+        }
+    }
+}