first commit

lastochka-android-compose/app/build.gradle.kts

@@ -0,0 +1,143 @@
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
+    id("com.google.dagger.hilt.android")
+}
+
+android {
+    namespace = "ru.lastochka.messenger"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "ru.lastochka.messenger"
+        minSdk = 26
+        targetSdk = 35
+        versionCode = 1
+        versionName = "1.0.0"
+
+        vectorDrawables {
+            useSupportLibrary = true
+        }
+    }
+
+    buildTypes {
+        debug {
+            resValue("string", "default_host_name", "app.lastochka-m.ru")
+            resValue("string", "default_api_key", "AQEAAAABAAD_rAp4DJh05a1HAwFT3A6K")
+        }
+        release {
+            resValue("string", "default_host_name", "app.lastochka-m.ru")
+            resValue("string", "default_api_key", "AQEAAAABAAD_rAp4DJh05a1HAwFT3A6K")
+            isMinifyEnabled = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+
+    buildFeatures {
+        compose = true
+        buildConfig = true
+    }
+
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.15"
+    }
+
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+}
+
+dependencies {
+    // Compose BOM
+    implementation(platform("androidx.compose:compose-bom:2024.06.00"))
+    implementation("androidx.compose.ui:ui")
+    implementation("androidx.compose.ui:ui-graphics")
+    implementation("androidx.compose.ui:ui-tooling-preview")
+    implementation("androidx.compose.material3:material3")
+    implementation("androidx.compose.material:material-icons-extended")
+    implementation("androidx.compose.animation:animation")
+
+    // Activity Compose
+    implementation("androidx.activity:activity-compose:1.9.3")
+
+    // Navigation Compose
+    implementation("androidx.navigation:navigation-compose:2.8.3")
+
+    // ViewModel + Lifecycle
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.8.7")
+    implementation("androidx.lifecycle:lifecycle-runtime-compose:2.8.7")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.7")
+
+    // Room
+    implementation("androidx.room:room-runtime:2.6.1")
+    implementation("androidx.room:room-ktx:2.6.1")
+    ksp("androidx.room:room-compiler:2.6.1")
+
+    // Coroutines
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.8.1")
+
+    // Hilt DI
+    implementation("com.google.dagger:hilt-android:2.52")
+    ksp("com.google.dagger:hilt-compiler:2.52")
+    implementation("androidx.hilt:hilt-navigation-compose:1.2.0")
+
+    // Material Components (for themes/splash)
+    implementation("com.google.android.material:material:1.12.0")
+
+    // Coil (image loading)
+    implementation("io.coil-kt:coil-compose:2.7.0")
+
+    // ExifInterface (image orientation)
+    implementation("androidx.exifinterface:exifinterface:1.3.7")
+
+    // DataStore (preferences)
+    implementation("androidx.datastore:datastore-preferences:1.1.1")
+
+    // Core Splash Screen
+    implementation("androidx.core:core-splashscreen:1.0.1")
+
+    // Timber (logging)
+    implementation("com.jakewharton.timber:timber:5.0.1")
+
+    // Firebase (Push Notifications)
+    implementation(platform("com.google.firebase:firebase-bom:33.1.0"))
+    implementation("com.google.firebase:firebase-messaging-ktx")
+    implementation("com.google.firebase:firebase-analytics-ktx")
+
+    // Gson (JSON parsing)
+    implementation("com.google.code.gson:gson:2.11.0")
+
+    // OkHttp (WebSocket + HTTP)
+    implementation("com.squareup.okhttp3:okhttp:4.12.0")
+
+    // Debug
+    debugImplementation("androidx.compose.ui:ui-tooling")
+    debugImplementation("androidx.compose.ui:ui-test-manifest")
+
+    // Testing
+    testImplementation("junit:junit:4.13.2")
+    testImplementation("io.mockk:mockk:1.13.10")
+    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.1")
+    testImplementation("app.cash.turbine:turbine:1.1.0")
+    testImplementation("org.robolectric:robolectric:4.12.1")
+    testImplementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.7")
+    testImplementation("androidx.savedstate:savedstate:1.2.1")
+    androidTestImplementation("androidx.test.ext:junit:1.1.5")
+    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+    androidTestImplementation("androidx.room:room-testing:2.6.1")
+}

lastochka-android-compose/app/proguard-rules.pro

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+# ProGuard rules for Lastochka Messenger
+
+# Tinode SDK
+-keep class co.tinode.tinodesdk.** { *; }
+-keep class co.tinode.tinodesdk.model.** { *; }
+
+# Gson
+-keepattributes Signature
+-keepattributes *Annotation*
+-dontwarn sun.misc.**
+-keep class com.google.gson.** { *; }
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+# Room
+-keep class * extends androidx.room.RoomDatabase
+-keep @androidx.room.Entity class *
+-dontwarn androidx.room.paging.**
+
+# Coroutines
+-keepnames class kotlinx.coroutines.internal.MainDispatcherFactory {}
+-keepnames class kotlinx.coroutines.CoroutineExceptionHandler {}
+-keepclassmembernames class kotlinx.** {
+    volatile <fields>;
+}

lastochka-android-compose/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
+        android:maxSdkVersion="32" />
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+
+    <application
+        android:name=".LastochkaApp"
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.App.Starting"
+        android:usesCleartextTraffic="true">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:theme="@style/Theme.App.Starting"
+            android:windowSoftInputMode="adjustResize">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <!-- Firebase Messaging Service -->
+        <service
+            android:name=".service.LastochkaFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
+
+        <!-- FileProvider для камеры -->
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+    </application>
+</manifest>

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/LastochkaApp.kt

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+package ru.lastochka.messenger
+
+import android.app.Application
+import coil.ImageLoader
+import coil.ImageLoaderFactory
+import dagger.hilt.android.HiltAndroidApp
+import ru.lastochka.messenger.data.TinodeClient
+import ru.lastochka.messenger.data.local.AppDatabase
+import ru.lastochka.messenger.di.createImageLoader
+import ru.lastochka.messenger.service.NetworkMonitor
+import timber.log.Timber
+import javax.inject.Inject
+
+/**
+ * Приложение Ласточка — инициализация Tinode SDK и Room DB.
+ */
+@HiltAndroidApp
+class LastochkaApp : Application(), ImageLoaderFactory {
+
+    @Inject lateinit var networkMonitor: NetworkMonitor
+
+    lateinit var tinodeClient: TinodeClient
+        private set
+
+    /** Получить base URL для загрузки файлов (http:// или https:// + host) */
+    fun getFileBaseUrl(): String {
+        return tinodeClient.getFileBaseUrl()
+    }
+
+    lateinit var database: AppDatabase
+        private set
+
+    private lateinit var _imageLoader: ImageLoader
+
+    override fun onCreate() {
+        super.onCreate()
+
+        // Инициализация Timber для логирования
+        if (BuildConfig.DEBUG) {
+            Timber.plant(Timber.DebugTree())
+        } else {
+            // В production можно добавить CrashlyticsTree или свою реализацию
+            // Timber.plant(CrashlyticsTree())
+        }
+
+        Timber.d("LastochkaApp onCreate")
+
+        // Инициализация Room
+        database = AppDatabase.getInstance(this)
+
+        // Инициализация Tinode SDK
+        // Dev сервер: ws:// (без TLS), production: wss://
+        val isDev = getString(R.string.default_host_name).contains("10.0.2.2") ||
+                    getString(R.string.default_host_name).contains("localhost")
+        tinodeClient = TinodeClient(
+            context = this,
+            appName = APP_NAME,
+            apiKey = getString(R.string.default_api_key),
+            hostName = getString(R.string.default_host_name),
+            useTLS = !isDev
+        )
+
+        // Запуск мониторинга сети (автореконнект)
+        networkMonitor.startMonitoring()
+
+        // Инициализация ImageLoader для Coil с авторизацией Tinode
+        _imageLoader = createImageLoader(this, tinodeClient)
+    }
+
+    /**
+     * ImageLoaderFactory — Coil использует этот ImageLoader по умолчанию
+     * для всех AsyncImage/SubcomposeAsyncImage вызовов.
+     */
+    override fun newImageLoader(): ImageLoader = _imageLoader
+
+    /** Получить ImageLoader для использования в Compose */
+    fun getImageLoader(): ImageLoader = _imageLoader
+
+    override fun onTerminate() {
+        super.onTerminate()
+        networkMonitor.stopMonitoring()
+        tinodeClient.disconnect()
+    }
+
+    companion object {
+        const val APP_NAME = "Ласточка"
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/MainActivity.kt

@@ -0,0 +1,333 @@
+package ru.lastochka.messenger
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.animation.*
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material.icons.automirrored.filled.Reply
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.navigation.*
+import androidx.navigation.compose.*
+import androidx.navigation.navArgument
+import dagger.hilt.android.AndroidEntryPoint
+import ru.lastochka.messenger.data.AuthState
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.SessionRepository
+import ru.lastochka.messenger.navigation.Screen
+import ru.lastochka.messenger.ui.screens.auth.LoginScreen
+import ru.lastochka.messenger.ui.screens.auth.RegisterScreen
+import ru.lastochka.messenger.ui.screens.calls.CallsScreen
+import ru.lastochka.messenger.ui.screens.chat.ChatScreen
+import ru.lastochka.messenger.ui.screens.contact.ContactInfoScreen
+import ru.lastochka.messenger.ui.screens.groups.CreateGroupScreen
+import ru.lastochka.messenger.ui.screens.chatlist.ChatListScreen
+import ru.lastochka.messenger.ui.screens.newchat.NewChatScreen
+import ru.lastochka.messenger.ui.screens.settings.ProfileScreen
+import ru.lastochka.messenger.ui.screens.settings.SettingsScreen
+import ru.lastochka.messenger.ui.theme.LastochkaTheme
+import ru.lastochka.messenger.viewmodel.AuthViewModel
+import ru.lastochka.messenger.viewmodel.ChatListViewModel
+import javax.inject.Inject
+
+/**
+ * Главная Activity — точка входа в приложение.
+ * Управляет навигацией между экранами.
+ */
+@AndroidEntryPoint
+class MainActivity : ComponentActivity() {
+
+    @Inject lateinit var chatRepository: ChatRepository
+    @Inject lateinit var sessionRepository: SessionRepository
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        // Устанавливаем splash screen ДО super.onCreate()
+        val splashScreen = installSplashScreen()
+        super.onCreate(savedInstanceState)
+
+        // Splash screen видимость управляется auth состоянием.
+        // Держим splash пока проверяется сохранённая сессия.
+        var keepSplashOnScreen = true
+        splashScreen.setKeepOnScreenCondition { keepSplashOnScreen }
+
+        setContent {
+            LastochkaTheme {
+                // AuthState как StateFlow — реагирует на logout/login
+                val authState by sessionRepository.authState.collectAsState()
+                val isAuthenticated = authState is AuthState.Authenticated
+
+                // 1) Нет сохранённой сессии → сразу убираем splash (показать Login)
+                LaunchedEffect(Unit) {
+                    val hasSaved = sessionRepository.hasSavedSession()
+                    if (!hasSaved) {
+                        keepSplashOnScreen = false
+                    }
+                }
+
+                // 2) AutoLogin завершился (успех или ошибка) → убираем splash
+                LaunchedEffect(authState) {
+                    if (authState !is AuthState.Unauthenticated) {
+                        keepSplashOnScreen = false
+                    }
+                }
+
+                // 3) Safety timeout — максимум 3 секунды
+                LaunchedEffect(Unit) {
+                    delay(3000)
+                    keepSplashOnScreen = false
+                }
+
+                if (isAuthenticated) {
+                    MainAppScreen(
+                        onLogoutRequired = {
+                            // Logout через SessionRepository
+                            kotlinx.coroutines.GlobalScope.launch {
+                                sessionRepository.logout()
+                            }
+                        }
+                    )
+                } else {
+                    AuthNavHost(
+                        onLoginSuccess = {
+                            // Не recreate() — просто ждём пока authState обновится
+                            // SessionRepository.login() уже установил _authState = Authenticated
+                        }
+                    )
+                }
+            }
+        }
+    }
+
+    @Composable
+    fun AuthNavHost(onLoginSuccess: () -> Unit) {
+        val navController = rememberNavController()
+        NavHost(
+            navController = navController,
+            startDestination = Screen.Login.route,
+            enterTransition = { slideInHorizontally { it } },
+            exitTransition = { slideOutHorizontally { -it } }
+        ) {
+            composable(Screen.Login.route) {
+                LoginScreen(
+                    onLoginSuccess = onLoginSuccess,
+                    onNavigateToRegister = {
+                        navController.navigate(Screen.Register.route)
+                    }
+                )
+            }
+            composable(Screen.Register.route) {
+                RegisterScreen(
+                    onRegisterSuccess = onLoginSuccess,
+                    onNavigateToLogin = {
+                        navController.popBackStack()
+                    }
+                )
+            }
+        }
+    }
+
+    @Composable
+    fun MainAppScreen(onLogoutRequired: () -> Unit) {
+        val navController = rememberNavController()
+        var selectedTab by remember { mutableStateOf(0) }
+        val chatListViewModel: ChatListViewModel = hiltViewModel()
+        val totalUnread by chatListViewModel.totalUnread.collectAsState()
+
+        // Определяем текущий маршрут для подсветки таба
+        val currentBackStackEntry by navController.currentBackStackEntryAsState()
+        val currentRoute = currentBackStackEntry?.destination?.route
+
+        LaunchedEffect(currentRoute) {
+            selectedTab = when {
+                currentRoute?.startsWith(Screen.Chats.route) == true -> 0
+                currentRoute == Screen.Calls.route -> 1
+                currentRoute?.startsWith(Screen.Settings.route) == true -> 2
+                else -> selectedTab
+            }
+        }
+
+        Scaffold(
+            bottomBar = {
+                NavigationBar {
+                    NavigationBarItem(
+                        selected = selectedTab == 0,
+                        onClick = {
+                            selectedTab = 0
+                            navController.navigate(Screen.Chats.route) {
+                                popUpTo(Screen.Chats.route) { inclusive = false }
+                                launchSingleTop = true
+                            }
+                        },
+                        icon = {
+                            if (totalUnread > 0) {
+                                Badge(
+                                    modifier = Modifier.offset(x = 8.dp, y = (-8).dp)
+                                ) {
+                                    Text(
+                                        text = if (totalUnread > 99) "99+" else "$totalUnread",
+                                        style = MaterialTheme.typography.labelSmall
+                                    )
+                                }
+                            }
+                            Icon(Icons.Default.Chat, null)
+                        },
+                        label = { Text("Чаты", fontWeight = if (selectedTab == 0) FontWeight.Bold else FontWeight.Normal) }
+                    )
+                    NavigationBarItem(
+                        selected = selectedTab == 1,
+                        onClick = {
+                            selectedTab = 1
+                            navController.navigate(Screen.Calls.route) {
+                                popUpTo(Screen.Calls.route) { inclusive = false }
+                                launchSingleTop = true
+                            }
+                        },
+                        icon = { Icon(Icons.Default.Call, null) },
+                        label = { Text("Звонки", fontWeight = if (selectedTab == 1) FontWeight.Bold else FontWeight.Normal) }
+                    )
+                    NavigationBarItem(
+                        selected = selectedTab == 2,
+                        onClick = {
+                            selectedTab = 2
+                            navController.navigate(Screen.Settings.route) {
+                                popUpTo(Screen.Settings.route) { inclusive = false }
+                                launchSingleTop = true
+                            }
+                        },
+                        icon = { Icon(Icons.Default.Settings, null) },
+                        label = { Text("Настройки", fontWeight = if (selectedTab == 2) FontWeight.Bold else FontWeight.Normal) }
+                    )
+                }
+            }
+        ) { padding ->
+            NavHost(
+                navController = navController,
+                startDestination = Screen.Chats.route,
+                modifier = Modifier.padding(padding)
+            ) {
+                // --- Chats Graph ---
+                composable(Screen.Chats.route) {
+                    ChatListScreen(
+                        onChatClick = { topicName, topicTitle ->
+                            navController.navigate(Screen.Chat.createRoute(topicName, topicTitle))
+                        },
+                        onNewChat = {
+                            navController.navigate(Screen.NewChat.route)
+                        },
+                        onProfile = {
+                            navController.navigate(Screen.Profile.route)
+                        },
+                        onLogout = onLogoutRequired
+                    )
+                }
+                composable(
+                    route = Screen.Chat.route,
+                    arguments = listOf(
+                        navArgument("topicName") { type = NavType.StringType },
+                        navArgument("topicTitle") {
+                            type = NavType.StringType
+                            defaultValue = ""
+                        }
+                    )
+                ) { backStackEntry ->
+                    val topicName = backStackEntry.arguments?.getString("topicName") ?: ""
+                    val topicTitleArg = backStackEntry.arguments?.getString("topicTitle") ?: ""
+                    // Если title пустой или равен topicName — загружаем настоящее имя из контакта
+                    val effectiveTitle = if (topicTitleArg.isBlank() || topicTitleArg == topicName) {
+                        null // Загрузим из сервера
+                    } else {
+                        topicTitleArg
+                    }
+                    ChatScreen(
+                        topicName = topicName,
+                        topicTitle = effectiveTitle ?: topicName,
+                        onBack = { navController.popBackStack() },
+                        onOpenContactInfo = {
+                            navController.navigate(Screen.ContactInfo.createRoute(topicName, topicTitleArg.ifBlank { topicName }))
+                        }
+                    )
+                }
+                composable(
+                    route = Screen.ContactInfo.route,
+                    arguments = listOf(
+                        navArgument("topicName") { type = NavType.StringType },
+                        navArgument("topicTitle") { type = NavType.StringType }
+                    )
+                ) { backStackEntry ->
+                    val topicName = backStackEntry.arguments?.getString("topicName") ?: ""
+                    val topicTitle = backStackEntry.arguments?.getString("topicTitle") ?: ""
+                    ContactInfoScreen(
+                        topicName = topicName,
+                        topicTitle = topicTitle,
+                        onBack = { navController.popBackStack() },
+                        onNavigateToChat = {
+                            navController.navigate(Screen.Chat.createRoute(topicName, topicTitle)) {
+                                popUpTo(Screen.ContactInfo.route) { inclusive = true }
+                            }
+                        }
+                    )
+                }
+                composable(Screen.CreateGroup.route) {
+                    CreateGroupScreen(
+                        onGroupCreated = { topicName ->
+                            navController.navigate(Screen.Chat.createRoute(topicName, topicName)) {
+                                popUpTo(Screen.CreateGroup.route) { inclusive = true }
+                            }
+                        },
+                        onBack = { navController.popBackStack() }
+                    )
+                }
+                composable(Screen.NewChat.route) {
+                    NewChatScreen(
+                        onChatSelected = { contactInfo ->
+                            navController.navigate(Screen.Chat.createRoute(contactInfo.topicName, contactInfo.displayName)) {
+                                popUpTo(Screen.Chats.route)
+                            }
+                        },
+                        onCreateGroup = {
+                            navController.navigate(Screen.CreateGroup.route)
+                        },
+                        onCreateChannel = {
+                            // TODO: Navigate to CreateChannel
+                        },
+                        onBack = { navController.popBackStack() }
+                    )
+                }
+
+                // --- Calls Graph ---
+                composable(Screen.Calls.route) {
+                    CallsScreen()
+                }
+
+                // --- Settings Graph ---
+                composable(Screen.Settings.route) {
+                    SettingsScreen(
+                        onNavigateToProfile = {
+                            navController.navigate(Screen.Profile.route)
+                        },
+                        onLogout = onLogoutRequired
+                    )
+                }
+                composable(Screen.Profile.route) {
+                    ProfileScreen(
+                        onNavigateBack = { navController.popBackStack() }
+                    )
+                }
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/data/ChatRepository.kt

@@ -0,0 +1,178 @@
+package ru.lastochka.messenger.data
+
+import kotlinx.coroutines.flow.Flow
+import ru.lastochka.messenger.data.local.AppDatabase
+import ru.lastochka.messenger.data.local.ContactEntity
+import ru.lastochka.messenger.data.local.MessageEntity
+
+/**
+ * Repository — единая точка доступа к данным (Tinode + Room).
+ */
+class ChatRepository(
+    private val tinodeClient: TinodeClient,
+    private val database: AppDatabase,
+    private val sessionRepository: SessionRepository
+) {
+    // ─── Messages ───────────────────────────────────────────────
+
+    fun getMessages(topicName: String): Flow<List<MessageEntity>> {
+        return database.messageDao().getMessagesForTopic(topicName)
+    }
+
+    suspend fun saveMessage(entity: MessageEntity) {
+        database.messageDao().insertMessage(entity)
+    }
+
+    suspend fun saveMessages(entities: List<MessageEntity>) {
+        database.messageDao().insertMessages(entities)
+    }
+
+    suspend fun markAllRead(topicName: String) {
+        database.messageDao().markAllRead(topicName)
+        val maxSeq = database.messageDao().getMaxSeq(topicName)
+        if (maxSeq != null) {
+            tinodeClient.markAsRead(topicName, maxSeq)
+        }
+    }
+
+    // ─── Contacts ────────────────────────────────────────────────
+
+    fun getContacts(): Flow<List<ContactEntity>> {
+        return database.contactDao().getAllContacts()
+    }
+
+    suspend fun saveContacts(contacts: List<ContactEntity>) {
+        database.contactDao().insertContacts(contacts)
+    }
+
+    suspend fun clearUnread(topicName: String) {
+        database.contactDao().clearUnread(topicName)
+    }
+
+    // ─── Session / Auth (делегирование SessionRepository) ───────
+
+    val authState: Flow<AuthState>
+        get() = sessionRepository.authState
+
+    val myUid: String?
+        get() = sessionRepository.myUid
+
+    fun isAuthenticated(): Boolean = sessionRepository.isAuthenticated
+
+    val connectionState: Flow<TinodeConnState>
+        get() = sessionRepository.connectionState
+
+    suspend fun login(username: String, password: String): Result<Unit> {
+        return sessionRepository.login(username, password)
+    }
+
+    suspend fun register(username: String, password: String, displayName: String): Result<Unit> {
+        return sessionRepository.register(username, password, displayName)
+    }
+
+    suspend fun registerWithFullProfile(
+        username: String, password: String, displayName: String,
+        email: String, phone: String
+    ): Result<Unit> {
+        return sessionRepository.registerWithFullProfile(username, password, displayName, email, phone)
+    }
+
+    suspend fun autoLogin(): Result<Unit> {
+        return sessionRepository.autoLogin()
+    }
+
+    suspend fun logout() {
+        sessionRepository.logout()
+    }
+
+    fun hasSavedToken(): Boolean = sessionRepository.isAuthenticated
+
+    // ─── Tinode operations ───────────────────────────────────────
+
+    suspend fun subscribeTopic(topicName: String): Result<Unit> {
+        return tinodeClient.subscribeTopic(topicName)
+    }
+
+    suspend fun getMeTopic(): List<ru.lastochka.messenger.data.model.MetaSub> {
+        return tinodeClient.getMeTopic()
+    }
+
+    fun getContactsFromSubs(subs: List<ru.lastochka.messenger.data.model.MetaSub>): List<ContactInfo> {
+        return tinodeClient.getContacts(subs)
+    }
+
+    suspend fun getTopicTitle(topicName: String): String {
+        return tinodeClient.getTopicTitle(topicName)
+    }
+
+    fun sendTextMessage(topicName: String, text: String) {
+        tinodeClient.sendTextMessage(topicName, text)
+    }
+
+    suspend fun sendImageMessage(
+        topicName: String,
+        imageUri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        caption: String = ""
+    ): Result<String> {
+        return tinodeClient.sendImageMessage(topicName, imageUri, mimeType, fileName, caption)
+    }
+
+    suspend fun sendImageMessageWithProgress(
+        topicName: String,
+        imageUri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        caption: String = "",
+        fileSize: Long = 0,
+        onProgress: (Float) -> Unit
+    ): Result<String> {
+        return tinodeClient.sendImageMessageWithProgress(
+            topicName, imageUri, mimeType, fileName, caption, fileSize, onProgress
+        )
+    }
+
+    fun sendTyping(topicName: String) {
+        tinodeClient.sendTyping(topicName)
+    }
+
+    fun markAsRead(topicName: String, seq: Int) {
+        tinodeClient.markAsRead(topicName, seq)
+    }
+
+    suspend fun searchUsers(query: String): List<ContactInfo> {
+        return tinodeClient.searchUsers(query)
+    }
+
+    suspend fun startChatWithUser(topicName: String): Result<Unit> {
+        return tinodeClient.startChatWithUser(topicName)
+    }
+
+    suspend fun loadMessagesBefore(topicName: String, beforeSeq: Int, limit: Int) {
+        tinodeClient.loadMessagesBefore(topicName, beforeSeq, limit)
+        // Сообщения приходят через event flow и сохраняются в Room через ChatViewModel
+    }
+
+    suspend fun deleteMessage(topicName: String, seqId: Int): Result<Unit> {
+        return tinodeClient.deleteMessage(topicName, seqId)
+    }
+
+    fun editMessage(topicName: String, seqId: Int, newText: String) {
+        tinodeClient.editMessage(topicName, seqId, newText)
+    }
+
+    suspend fun updateProfile(name: String, bio: String): Result<Unit> {
+        return tinodeClient.updateProfile(name, bio)
+    }
+
+    suspend fun getMyProfile(): Result<ru.lastochka.messenger.data.UserProfile> {
+        return tinodeClient.getMyProfile()
+    }
+
+    suspend fun createGroup(name: String, description: String, members: List<String>): Result<String> {
+        return tinodeClient.createGroup(name, description, members)
+    }
+
+    val events = tinodeClient.events
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/data/SessionRepository.kt

@@ -0,0 +1,192 @@
+package ru.lastochka.messenger.data
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.*
+import androidx.datastore.preferences.preferencesDataStore
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.*
+import ru.lastochka.messenger.service.NetworkMonitor
+import ru.lastochka.messenger.util.RetryPolicy
+import timber.log.Timber
+import javax.inject.Inject
+import javax.inject.Singleton
+
+private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "session")
+
+sealed class AuthState {
+    data object Unauthenticated : AuthState()
+    data class Authenticated(val uid: String) : AuthState()
+    data object SessionExpired : AuthState()
+}
+
+/**
+ * Простой и надёжный auth-менеджер.
+ *
+ * Принципы:
+ * 1. _authState — единственный источник правды
+ * 2. login() → при успехе СРАЗУ _authState = Authenticated
+ * 3. DataStore — только для автологина при перезапуске
+ * 4. Никаких combine, race condition и сложных flow
+ */
+@Singleton
+class SessionRepository @Inject constructor(
+    private val context: Context,
+    val tinodeClient: TinodeClient,
+    private val networkMonitor: NetworkMonitor
+) {
+    private val dataStore: DataStore<Preferences> = context.dataStore
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+
+    // ─── Auth State — полностью независим от connectionState ─
+
+    private val _authState = MutableStateFlow<AuthState>(AuthState.Unauthenticated)
+    val authState: StateFlow<AuthState> = _authState.asStateFlow()
+
+    // ─── Proxy-свойства ──────────────────────────────────────
+
+    val myUid: String? get() = tinodeClient.myUid
+    val isAuthenticated: Boolean
+        get() = _authState.value is AuthState.Authenticated
+    val connectionState: StateFlow<TinodeConnState> = tinodeClient.connectionState
+
+    init {
+        // НЕ зависим от connectionState для authState.
+        // authState управляется ТОЛЬКО через login()/logout()/autoLogin()
+        scope.launch {
+            val savedUid = loadUid()
+            if (savedUid != null) {
+                // Есть сохранённая сессия — пробуем автологин
+                // autoLogin() сам подключится и обновит _authState
+                autoLogin()
+            }
+        }
+
+        // При восстановлении сети — переподключаемся если были авторизованы
+        scope.launch {
+            networkMonitor.isConnected.collect { connected ->
+                if (connected && _authState.value is AuthState.Authenticated) {
+                    if (tinodeClient.connectionState.value == TinodeConnState.Disconnected) {
+                        autoLogin()
+                    }
+                }
+            }
+        }
+    }
+
+    // ─── Auth Operations ─────────────────────────────────────
+
+    suspend fun login(username: String, password: String): Result<Unit> {
+        Timber.d("Attempting login for user: $username")
+        val result = tinodeClient.login(username, password)
+        Timber.d("Login result: $result, myUid=${tinodeClient.myUid}")
+        if (result.isSuccess) {
+            val uid = tinodeClient.myUid ?: username
+            Timber.d("Setting authState = Authenticated($uid)")
+            _authState.value = AuthState.Authenticated(uid)
+            saveUid(uid)
+        } else {
+            Timber.w("Login failed: ${result.exceptionOrNull()?.message}")
+        }
+        return result
+    }
+
+    suspend fun register(username: String, password: String, displayName: String): Result<Unit> {
+        Timber.d("Attempting registration for user: $username")
+        val result = tinodeClient.register(username, password, displayName)
+        if (result.isSuccess) {
+            val uid = tinodeClient.myUid ?: username
+            Timber.d("Registration successful, uid=$uid")
+            saveUid(uid)
+            _authState.value = AuthState.Authenticated(uid)
+        } else {
+            Timber.w("Registration failed: ${result.exceptionOrNull()?.message}")
+        }
+        return result
+    }
+
+    suspend fun registerWithFullProfile(
+        username: String, password: String, displayName: String,
+        email: String, phone: String
+    ): Result<Unit> {
+        Timber.d("Attempting registration with full profile for user: $username")
+        val result = tinodeClient.registerWithFullProfile(username, password, displayName, email, phone)
+        if (result.isSuccess) {
+            val uid = tinodeClient.myUid ?: username
+            saveUid(uid)
+            _authState.value = AuthState.Authenticated(uid)
+        } else {
+            Timber.w("Registration failed: ${result.exceptionOrNull()?.message}")
+        }
+        return result
+    }
+
+    suspend fun logout() {
+        Timber.w("logout() called! Clearing auth state")
+        tinodeClient.logout()
+        clearUid()
+        _authState.value = AuthState.Unauthenticated
+    }
+
+    suspend fun autoLogin(): Result<Unit> {
+        val policy = RetryPolicy(
+            maxRetries = 3,
+            initialDelayMs = 1_000L,
+            maxDelayMs = 10_000L,
+            backoffFactor = 2.0,
+            shouldRetry = { e ->
+                // Не retry если токен недействителен
+                e.message?.contains("401", ignoreCase = true) != true &&
+                e.message?.contains("token", ignoreCase = true) != true
+            }
+        )
+        return policy.invoke {
+            val result = tinodeClient.autoLogin()
+            if (result.isSuccess) {
+                val uid = tinodeClient.myUid ?: loadUid() ?: ""
+                saveUid(uid)
+                _authState.value = AuthState.Authenticated(uid)
+            } else {
+                clearUid()
+            }
+            result
+        }
+    }
+
+    // ─── Persistence ─────────────────────────────────────────
+
+    fun hasSavedToken(): Boolean = _authState.value is AuthState.Authenticated
+
+    /** Проверить есть ли сохранённая сессия (UID в DataStore). */
+    suspend fun hasSavedSession(): Boolean {
+        return try {
+            dataStore.data.first()[KEY_UID] != null
+        } catch (_: Exception) {
+            false
+        }
+    }
+
+    private suspend fun saveUid(uid: String) {
+        try {
+            dataStore.edit { it[KEY_UID] = uid }
+        } catch (_: Exception) {}
+    }
+
+    private suspend fun loadUid(): String? {
+        return try {
+            dataStore.data.first()[KEY_UID]
+        } catch (_: Exception) {
+            null
+        }
+    }
+
+    private suspend fun clearUid() {
+        try {
+            dataStore.edit { it.remove(KEY_UID) }
+        } catch (_: Exception) {}
+    }
+
+    companion object {
+        private val KEY_UID = stringPreferencesKey("my_uid")
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/data/TinodeHttpClient.kt

@@ -0,0 +1,685 @@
+package ru.lastochka.messenger.data
+
+import android.content.Context
+import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.*
+import okhttp3.*
+import okhttp3.EventListener
+import okhttp3.Handshake
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
+import okio.BufferedSink
+import ru.lastochka.messenger.data.model.*
+import timber.log.Timber
+import java.io.File
+import java.util.*
+import java.util.concurrent.TimeUnit
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+import kotlin.random.Random
+
+/**
+ * Низкоуровневый клиент Tinode: WebSocket для real-time.
+ */
+class TinodeHttpClient(
+    private val context: Context,
+    private val apiKey: String,
+    private val hostName: String,
+    private val appName: String,
+    private val useTLS: Boolean = true
+) {
+    val gson: Gson = GsonBuilder()
+        // НЕ включаем null поля — пустые объекты {} для sub/desc
+        .registerTypeAdapter(PubContent::class.java, PubContentDeserializer)
+        .create()
+    private var webSocket: WebSocket? = null
+    private val _connectionEvents = MutableSharedFlow<ConnectionEvent>(extraBufferCapacity = 8)
+
+    @Volatile var authToken: String? = null
+    @Volatile var myUid: String? = null
+    @Volatile var isConnected = false
+    @Volatile var isAuthenticated = false
+
+    private val pendingRequests = mutableMapOf<String, (ServerMessage) -> Unit>()
+    private var _eventCallback: ((ServerMessage) -> Unit)? = null
+    private val scope = CoroutineScope(Dispatchers.IO + Job())
+
+    val connectionEvents: SharedFlow<ConnectionEvent> = _connectionEvents
+
+    fun setEventCallback(callback: (ServerMessage) -> Unit) {
+        _eventCallback = callback
+    }
+
+    // ─── Connection ─────────────────────────────────────────────
+
+    fun connect() {
+        if (isConnected) return
+        val scheme = if (useTLS) "wss" else "ws"
+        val wsUrl = "$scheme://$hostName/v0/channels?apikey=$apiKey"
+        Timber.d("Connecting to $wsUrl")
+        val request = Request.Builder()
+            .url(wsUrl)
+            .build()
+
+        val listener = object : WebSocketListener() {
+            override fun onOpen(webSocket: WebSocket, response: Response) {
+                isConnected = true
+                scope.launch { _connectionEvents.emit(ConnectionEvent.Connected) }
+            }
+
+            override fun onMessage(webSocket: WebSocket, text: String) {
+                try {
+                    val msg = gson.fromJson(text, ServerMessage::class.java)
+                    Timber.d("<<< RAW: ${text.take(200)}")
+                    Timber.d("<<< TYPE: ${msg.type}, id=${msg.ctrl?.id ?: msg.data?.topic ?: msg.meta?.topic ?: "unknown"}")
+                    when (msg.type) {
+                        MsgType.CTRL -> {
+                            val ctrl = msg.ctrl ?: run {
+                                Timber.w("CTRL message without ctrl field: $text")
+                                return
+                            }
+                            ctrl.id?.let { id ->
+                                pendingRequests.remove(id)?.invoke(msg)
+                            }
+                            ctrl.params?.token?.let { token -> authToken = token }
+                            ctrl.params?.user?.let { uid -> myUid = uid }
+                            // ВАЖНО: НЕ ставим isAuthenticated здесь — только в login()!
+                            // hi() возвращает 200, но это НЕ аутентификация
+                        }
+                        MsgType.DATA, MsgType.META, MsgType.PRES, MsgType.INFO -> {
+                            _eventCallback?.invoke(msg)
+                        }
+                        else -> {}
+                    }
+                } catch (e: Exception) {
+                    Timber.e(e, "Failed to parse WebSocket message")
+                }
+            }
+
+            override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
+                isConnected = false
+                isAuthenticated = false
+                authToken = null
+                myUid = null
+                scope.launch { _connectionEvents.emit(ConnectionEvent.Disconnected) }
+            }
+
+            override fun onFailure(webSocket: WebSocket, t: Throwable, response: Response?) {
+                val errorMsg = response?.message ?: t.message ?: "Unknown error"
+                val statusCode = response?.code ?: 0
+                Timber.e(t, "WebSocket onFailure: code=$statusCode, message=$errorMsg")
+                isConnected = false
+                isAuthenticated = false
+                authToken = null
+                myUid = null
+                scope.launch { _connectionEvents.emit(ConnectionEvent.Error(t)) }
+            }
+        }
+
+        val client = OkHttpClient.Builder()
+            .pingInterval(30, TimeUnit.SECONDS)
+            .eventListener(object : EventListener() {
+                override fun dnsStart(call: Call, domainName: String) {
+                    Timber.d("WS dnsStart: $domainName")
+                }
+                override fun dnsEnd(call: Call, domainName: String, inetAddressList: List<java.net.InetAddress>) {
+                    Timber.d("WS dnsEnd: ${inetAddressList.map { it.hostAddress }}")
+                }
+                override fun connectStart(call: Call, inetSocketAddress: java.net.InetSocketAddress, proxy: java.net.Proxy) {
+                    Timber.d("WS connectStart: ${inetSocketAddress.hostName}:${inetSocketAddress.port}")
+                }
+                override fun secureConnectStart(call: Call) {
+                    Timber.d("WS secureConnectStart (TLS handshake)")
+                }
+                override fun secureConnectEnd(call: Call, handshake: Handshake?) {
+                    Timber.d("WS secureConnectEnd: ${handshake?.tlsVersion}")
+                }
+                override fun connectFailed(call: Call, inetSocketAddress: java.net.InetSocketAddress, proxy: java.net.Proxy, protocol: okhttp3.Protocol?, ioe: java.io.IOException) {
+                    Timber.e(ioe, "WS connectFailed: ${inetSocketAddress.hostName}:${inetSocketAddress.port}")
+                }
+                override fun callFailed(call: Call, ioe: java.io.IOException) {
+                    Timber.e(ioe, "WS callFailed: ${ioe.message}")
+                }
+            })
+            .build()
+
+        webSocket = client.newWebSocket(request, listener)
+    }
+
+    fun disconnect() {
+        webSocket?.close(1000, "Client disconnect")
+        webSocket = null
+        isConnected = false
+        isAuthenticated = false
+        authToken = null
+        myUid = null
+    }
+
+    // ─── Messages ──────────────────────────────────────────────
+
+    fun send(message: Any): String {
+        val json = gson.toJson(message)
+        Timber.d(">>> RAW: ${json.take(150)}")
+        webSocket?.send(json)
+        // Extract ID from the nested message structure (hi.id, acc.id, login.id, etc.)
+        return extractMessageId(message)
+    }
+
+    /**
+     * Отправить сообщение и ждать ответа по id (без suspend).
+     */
+    fun sendWithDirectCallback(message: Any, id: String) {
+        pendingRequests[id] = { msg ->
+            Timber.d("Direct callback received for id=$id")
+        }
+        val json = gson.toJson(message)
+        Timber.d(">>> RAW: ${json.take(150)}")
+        webSocket?.send(json)
+    }
+
+    private fun extractMessageId(message: Any): String {
+        // Try to extract ID from common Tinode message structures
+        val json = gson.toJsonTree(message).asJsonObject
+        // Check for nested id fields: hi.id, acc.id, login.id, sub.id, pub.id, note.id, leave.id, get.id, set.id
+        for (key in listOf("hi", "acc", "login", "sub", "pub", "note", "leave", "get", "set")) {
+            val nested = json.get(key)
+            if (nested != null && nested.isJsonObject) {
+                val id = nested.asJsonObject.get("id")
+                if (id != null && !id.isJsonNull) {
+                    return id.asString
+                }
+            }
+        }
+        // Fallback: generate ID if not found
+        return generateId()
+    }
+
+    private suspend fun sendWithCallback(message: Any): ServerMessage = suspendCancellableCoroutine { cont ->
+        if (!isConnected) {
+            cont.resumeWith(Result.failure(Exception("Нет подключения к серверу")))
+            return@suspendCancellableCoroutine
+        }
+        
+        val id = send(message)
+        pendingRequests[id] = { msg ->
+            cont.resume(msg, null)
+        }
+        scope.launch {
+            delay(30_000)
+            if (!cont.isCompleted) {
+                pendingRequests.remove(id)
+                cont.resumeWith(Result.failure(Exception("Сервер не отвечает. Проверьте интернет-соединение.")))
+            }
+        }
+    }
+
+    // ─── API methods ────────────────────────────────────────────
+
+    suspend fun sendHi(): ServerMessage {
+        val msg = ClientMsgHi(hi = HiPacket(id = generateId()))
+        return sendWithCallback(msg)
+    }
+
+    /**
+     * Неблокирующая отправка hi — просто отправляем JSON.
+     */
+    fun sendHiNonBlocking() {
+        val msg = ClientMsgHi(hi = HiPacket(id = generateId()))
+        send(msg)
+    }
+
+    suspend fun register(username: String, password: String, displayName: String): ServerMessage {
+        val msg = ClientMsgAcc(
+            acc = AccPacket(
+                id = generateId(),
+                user = "new",
+                scheme = "basic",
+                secret = base64Encode("$username:$password"),
+                login = true,
+                desc = DescPacket(`public` = TheCard(fn = displayName))
+            )
+        )
+        return sendWithCallback(msg)
+    }
+
+    suspend fun registerWithFullProfile(
+        username: String,
+        password: String,
+        displayName: String,
+        email: String,
+        phone: String
+    ): ServerMessage {
+        // НЕ отправляем tags при регистрации — сервер отклоняет 403
+        // Теги можно установить позже через setMeta("me")
+        val tags: List<String>? = null
+
+        val credentials = mutableListOf<Credential>()
+        if (email.isNotBlank()) {
+            credentials.add(Credential(meth = "email", val_str = email, done = false))
+        }
+
+        val msg = ClientMsgAcc(
+            acc = AccPacket(
+                id = generateId(),
+                user = "new",
+                scheme = "basic",
+                secret = base64Encode("$username:$password"),
+                login = true,
+                desc = DescPacket(`public` = TheCard(fn = displayName)),
+                tags = tags,
+                cred = credentials.ifEmpty { null }
+            )
+        )
+        return sendWithCallback(msg)
+    }
+
+    suspend fun login(username: String, password: String): ServerMessage {
+        val msg = ClientMsgLogin(
+            login = LoginPacket(id = generateId(), scheme = "basic", secret = base64Encode("$username:$password"))
+        )
+        return sendWithCallback(msg)
+    }
+
+    suspend fun loginToken(token: String): ServerMessage {
+        val msg = ClientMsgLogin(
+            login = LoginPacket(id = generateId(), scheme = "token", secret = token)
+        )
+        return sendWithCallback(msg)
+    }
+
+    suspend fun subscribe(topicName: String, get: MetaGetPacket? = null): ServerMessage {
+        val msg = ClientMsgSub(sub = SubPacket(id = generateId(), topic = topicName, get = get))
+        return sendWithCallback(msg)
+    }
+
+    suspend fun getData(topicName: String, since: Int = 0, limit: Int = 100): ServerMessage {
+        val msg = ClientMsgGet(get = GetPacket(id = generateId(), topic = topicName, data = MetaGetData(since = since, limit = limit)))
+        return sendWithCallback(msg)
+    }
+
+    suspend fun getMeta(topicName: String, what: String = "desc sub"): ServerMessage {
+        val msg = ClientMsgGet(get = GetPacket(id = generateId(), topic = topicName, what = what))
+        // Для get запросов сервер возвращает ctrl + meta как отдельные сообщения
+        // sendWithCallback дождётся ctrl, а meta придёт через event callback
+        return try {
+            withTimeout(10_000) {
+                sendWithCallback(msg)
+            }
+        } catch (e: Exception) {
+            // Если ctrl не пришёл (таймаут) — пробуем ещё раз
+            Timber.w(e, "getMeta sendWithCallback timeout, retrying...")
+            send(msg)  // Отправляем ещё раз
+            delay(500) // Даём время на ответ
+            ServerMessage() // Возвращаем пустой — meta придёт через callback
+        }
+    }
+
+    suspend fun setMeta(topicName: String, set: MetaSetPacket): ServerMessage {
+        val msg = ClientMsgSet(set = SetPacket(id = generateId(), topic = topicName, desc = set.desc, sub = set.sub))
+        return sendWithCallback(msg)
+    }
+
+    fun publish(topicName: String, text: String) {
+        send(ClientMsgPub(pub = PubPacket(id = generateId(), topic = topicName, content = PubContent(txt = text))))
+    }
+
+    /**
+     * Отправить сообщение с Drafty контентом и extra attachments.
+     */
+    fun publishWithContent(topicName: String, contentJson: String, mime: String, extra: PubExtra? = null) {
+        // Сериализуем вручную чтобы отправить правильный JSON
+        val pubPacket = mutableMapOf<String, Any>(
+            "id" to generateId(),
+            "topic" to topicName,
+            "head" to mapOf("mime" to mime),
+            "content" to gson.fromJson(contentJson, Map::class.java)
+        )
+        // extra.attachments — опционально, для garbage collection на сервере
+        extra?.let {
+            pubPacket["extra"] = mapOf("attachments" to it.attachments)
+        }
+        val msg = mapOf("pub" to pubPacket)
+        val json = gson.toJson(msg)
+        Timber.d(">>> Pub with attachments: ${json.take(200)}...")
+        webSocket?.send(json)
+    }
+
+    fun sendTyping(topicName: String) {
+        send(ClientMsgNote(note = NotePacket(id = generateId(), topic = topicName, what = "kp")))
+    }
+
+    fun noteRead(topicName: String, seq: Int) {
+        send(ClientMsgNote(note = NotePacket(id = generateId(), topic = topicName, what = "read", seq = seq)))
+    }
+
+    fun leave(topicName: String) {
+        send(ClientMsgLeave(leave = LeavePacket(id = generateId(), topic = topicName)))
+    }
+
+    fun leaveAndUnsub(topicName: String) {
+        send(ClientMsgLeave(leave = LeavePacket(id = generateId(), topic = topicName, unsub = true)))
+    }
+
+    /**
+     * Смена пароля текущего пользователя.
+     * Tinode: acc message с user="me" и новым secret.
+     */
+    suspend fun changePassword(username: String, oldPassword: String, newPassword: String): ServerMessage {
+        val msg = ClientMsgAcc(
+            acc = AccPacket(
+                id = generateId(),
+                user = "me",
+                scheme = "basic",
+                secret = base64Encode("$username:$newPassword"),
+                login = false
+            )
+        )
+        return sendWithCallback(msg)
+    }
+
+    /**
+     * Удалить сообщение (del message).
+     * Tinode: del message с hard=true для полного удаления.
+     */
+    suspend fun deleteMessage(topicName: String, seqId: Int): ServerMessage {
+        val msg = ClientMsgDel(del = DelPacket(
+            id = generateId(),
+            topic = topicName,
+            seq = DelSeq(first = seqId, last = seqId),
+            hard = true
+        ))
+        return sendWithCallback(msg)
+    }
+
+    /**
+     * Редактировать сообщение (pub с head.replace).
+     * Tinode: pub message с head.replace = seqId оригинала.
+     */
+    fun editMessage(topicName: String, seqId: Int, newText: String) {
+        val msg = ClientMsgPub(pub = PubPacket(
+            id = generateId(),
+            topic = topicName,
+            content = PubContent(txt = newText),
+            head = PubHead(replaces = seqId.toString())
+        ))
+        send(msg)
+    }
+
+    // ─── Helpers ────────────────────────────────────────────────
+
+    private fun generateId(): String {
+        val bytes = ByteArray(8)
+        Random.nextBytes(bytes)
+        return bytes.joinToString("") { "%02x".format(it) }
+    }
+
+    private fun base64Encode(input: String): String {
+        return Base64.getEncoder().encodeToString(input.toByteArray(Charsets.UTF_8))
+    }
+
+    // ─── File Upload ─────────────────────────────────────────────
+
+    /**
+     * Загрузить файл на сервер Tinode через HTTP POST multipart.
+     * Возвращает URL файла относительно /v0/file/s/.
+     */
+    suspend fun uploadFile(uri: android.net.Uri, mimeType: String, fileName: String): String {
+        val scheme = if (useTLS) "https" else "http"
+        val httpUrl = okhttp3.HttpUrl.Builder()
+            .scheme(scheme)
+            .host(hostName)
+            .addEncodedPathSegments("v0/file/u/")
+            .addQueryParameter("apikey", apiKey)
+            .addQueryParameter("auth", "token")
+            .addQueryParameter("secret", authToken ?: "")
+            .build()
+        Timber.d("Uploading file to $httpUrl, mime=$mimeType, name=$fileName")
+
+        return uploadFileToUrl(uri, mimeType, fileName, httpUrl.toString())
+    }
+
+    /**
+     * Загрузить файл с прогресс-колбэком через SDK LargeFileHelper.
+     * Колбэк возвращает прогресс 0.0..1.0.
+     */
+    suspend fun uploadFileWithProgress(
+        uri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        onProgress: (Float) -> Unit
+    ): String {
+        // Используем HttpUrl.Builder для корректного URL-encoding параметров
+        val scheme = if (useTLS) "https" else "http"
+        val httpUrl = okhttp3.HttpUrl.Builder()
+            .scheme(scheme)
+            .host(hostName)
+            .addEncodedPathSegments("v0/file/u/")
+            .addQueryParameter("apikey", apiKey)
+            .addQueryParameter("auth", "token")
+            .addQueryParameter("secret", authToken ?: "")
+            .build()
+        val uploadUrl = httpUrl.toString()
+        Timber.d("Uploading file with progress: $uploadUrl")
+
+        return uploadFileToUrlWithProgress(uri, mimeType, fileName, uploadUrl, onProgress)
+    }
+
+    /**
+     * Загрузить файл на конкретный URL.
+     */
+    private suspend fun uploadFileToUrl(
+        uri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        url: String
+    ): String {
+        // Читаем файл в ByteArray
+        val fileBytes = context.contentResolver.openInputStream(uri)?.use { it.readBytes() }
+            ?: throw Exception("Cannot read file: $uri")
+
+        return uploadFileBytesToUrl(fileBytes, mimeType, fileName, url)
+    }
+
+    /**
+     * Загрузить ByteArray на указанный URL (поддерживает редиректы).
+     * Tinode требует RFC 2388 multipart/form-data.
+     */
+    private suspend fun uploadFileBytesToUrl(
+        fileBytes: ByteArray,
+        mimeType: String,
+        fileName: String,
+        url: String
+    ): String {
+        // RFC 2388 multipart/form-data — ожидаемый формат Tinode
+        val multipartBody = MultipartBody.Builder()
+            .setType(MultipartBody.FORM)
+            .addFormDataPart("file", fileName, fileBytes.toRequestBody(mimeType.toMediaType()))
+            .build()
+
+        val request = Request.Builder()
+            .url(url)
+            .post(multipartBody)
+            .build()
+
+        OkHttpClient.Builder()
+            .connectTimeout(30, TimeUnit.SECONDS)
+            .readTimeout(60, TimeUnit.SECONDS)
+            .writeTimeout(60, TimeUnit.SECONDS)
+            .followRedirects(false)
+            .build()
+            .newCall(request).execute().use { response ->
+                return when (response.code) {
+                    200 -> {
+                        val body = response.body?.string() ?: ""
+                        Timber.d("Upload response: $body")
+                        val ctrl = gson.fromJson(body, ServerMessage::class.java).ctrl
+                        val fileUrl = ctrl?.params?.url
+                            ?: throw Exception("No file URL in response. Response: $body")
+                        normalizeFileUrl(fileUrl)
+                    }
+                    307, 302 -> {
+                        val redirectUrl = response.header("Location")
+                            ?: throw Exception("No redirect URL in ${response.code} response")
+                        Timber.d("Upload redirect ${response.code} to $redirectUrl")
+                        uploadFileBytesToUrl(fileBytes, mimeType, fileName, redirectUrl)
+                    }
+                    else -> {
+                        val errorBody = response.body?.string() ?: ""
+                        Timber.e("Upload failed: ${response.code} ${response.message}, body: $errorBody")
+                        throw Exception("Upload failed: ${response.code} ${response.message}. Server: $errorBody")
+                    }
+                }
+            }
+    }
+
+    /**
+     * Загрузить файл с прогресс-колбэком.
+     */
+    private suspend fun uploadFileToUrlWithProgress(
+        uri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        url: String,
+        onProgress: (Float) -> Unit
+    ): String {
+        // Читаем файл в ByteArray
+        val fileBytes = context.contentResolver.openInputStream(uri)?.use { it.readBytes() }
+            ?: return Result.failure<String>(Exception("Cannot open file")).getOrThrow()
+
+        // Строим multipart через OkHttp Builder (RFC 2388)
+        val multipartBody = MultipartBody.Builder()
+            .setType(MultipartBody.FORM)
+            .addFormDataPart("file", fileName, fileBytes.toRequestBody(mimeType.toMediaType()))
+            .build()
+
+        // Буферизуем multipart body для подсчёта размера и захватываем Content-Type с boundary
+        val buffer = okio.Buffer()
+        multipartBody.writeTo(buffer)
+        val bodyBytes = buffer.readByteArray()
+        val totalBytes = bodyBytes.size.toLong()
+        val contentType = multipartBody.contentType() // multipart/form-data; boundary=...
+
+        return uploadBytesWithProgress(bodyBytes, totalBytes, contentType, url, onProgress)
+    }
+
+    /**
+     * Отправить ByteArray с прогресс-колбэком (поддержка редиректов).
+     * Tinode требует RFC 2388 multipart/form-data.
+     */
+    private suspend fun uploadBytesWithProgress(
+        bodyBytes: ByteArray,
+        totalBytes: Long,
+        contentType: okhttp3.MediaType?,
+        url: String,
+        onProgress: (Float) -> Unit
+    ): String = suspendCoroutine { cont ->
+        val progressRequestBody = object : RequestBody() {
+            override fun contentType() = contentType
+            override fun contentLength() = totalBytes
+            override fun writeTo(sink: okio.BufferedSink) {
+                val chunkSize = 32768L // 32KB chunks
+                var offset = 0L
+                val total = bodyBytes.size.toLong()
+
+                while (offset < total) {
+                    val toWrite = minOf(chunkSize, total - offset)
+                    sink.write(bodyBytes, offset.toInt(), toWrite.toInt())
+                    offset += toWrite
+                    val progress = if (totalBytes > 0) offset.toFloat() / totalBytes else 0f
+                    onProgress(progress.coerceIn(0f, 0.99f))
+                }
+                onProgress(1f)
+            }
+        }
+
+        val request = Request.Builder()
+            .url(url)
+            .post(progressRequestBody)
+            .build()
+
+        OkHttpClient.Builder()
+            .connectTimeout(30, TimeUnit.SECONDS)
+            .readTimeout(120, TimeUnit.SECONDS)
+            .writeTimeout(120, TimeUnit.SECONDS)
+            .followRedirects(false)
+            .build()
+            .newCall(request).enqueue(object : okhttp3.Callback {
+                override fun onFailure(call: okhttp3.Call, e: java.io.IOException) {
+                    cont.resumeWith(Result.failure(Exception("Upload failed: ${e.message}", e)))
+                }
+
+                override fun onResponse(call: okhttp3.Call, response: okhttp3.Response) {
+                    response.use { resp ->
+                        try {
+                            when (resp.code) {
+                                200 -> {
+                                    val responseBody = resp.body?.string() ?: ""
+                                    Timber.d("Upload response: $responseBody")
+                                    val ctrl = gson.fromJson(responseBody, ServerMessage::class.java).ctrl
+                                    val fileUrl = ctrl?.params?.url
+                                    if (fileUrl != null) {
+                                        Timber.d("File URL received: $fileUrl")
+                                        cont.resumeWith(Result.success(normalizeFileUrl(fileUrl)))
+                                    } else {
+                                        Timber.e("No file URL in response! ctrl.params: ${ctrl?.params}")
+                                        cont.resumeWith(Result.failure(Exception("No file URL in response")))
+                                    }
+                                }
+                                301, 302, 307 -> {
+                                    val location = resp.header("Location")
+                                        ?: throw Exception("No redirect URL for ${resp.code}")
+                                    val redirectUrl = resp.request.url.resolve(location)?.toString()
+                                        ?: throw Exception("Failed to resolve redirect URL: $location")
+                                    Timber.d("Upload redirect ${resp.code} → $redirectUrl")
+                                    // Рекурсивно отправляем те же байты на redirect URL
+                                    runBlocking {
+                                        try {
+                                            val result = uploadBytesWithProgress(
+                                                bodyBytes, totalBytes, contentType, redirectUrl, onProgress
+                                            )
+                                            cont.resumeWith(Result.success(result))
+                                        } catch (e: Exception) {
+                                            cont.resumeWith(Result.failure(e))
+                                        }
+                                    }
+                                }
+                                else -> {
+                                    val errorBody = resp.body?.string() ?: ""
+                                    Timber.e("Upload failed: ${resp.code} ${resp.message}, body: $errorBody")
+                                    cont.resumeWith(Result.failure(
+                                        Exception("Upload failed: ${resp.code} ${resp.message}. Server: $errorBody")
+                                    ))
+                                }
+                            }
+                        } catch (e: Exception) {
+                            cont.resumeWith(Result.failure(e))
+                        }
+                    }
+                }
+            })
+    }
+
+    /**
+     * Нормализовать URL файла — относительный в путь /v0/file/s/...
+     */
+    private fun normalizeFileUrl(url: String): String {
+        return when {
+            url.startsWith("/v0/file/s/") -> url
+            url.startsWith("./") -> "/v0/file/s/${url.substring(2)}"
+            url.startsWith("http") -> {
+                url.toHttpUrlOrNull()?.encodedPath ?: url
+            }
+            else -> "/v0/file/s/$url"
+        }
+    }
+}
+
+sealed class ConnectionEvent {
+    data object Connected : ConnectionEvent()
+    data object Disconnected : ConnectionEvent()
+    data object Authenticated : ConnectionEvent()
+    data class Error(val throwable: Throwable) : ConnectionEvent()
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/data/local/AppDatabase.kt

@@ -0,0 +1,172 @@
+package ru.lastochka.messenger.data.local
+
+import android.content.Context
+import androidx.room.*
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+import kotlinx.coroutines.flow.Flow
+import java.util.Date
+
+// ─── Entities ────────────────────────────────────────────────────
+
+@Entity(tableName = "messages")
+data class MessageEntity(
+    @PrimaryKey
+    val seqId: Int,
+    val topicName: String,
+    val from: String,
+    val senderName: String,
+    val content: String,       // Plain text from Drafty
+    val rawContent: String,    // JSON Drafty
+    val timestamp: Long,
+    val isOwn: Boolean,
+    val isRead: Boolean,
+    val isEdited: Boolean,
+    val hasAttachment: Boolean,
+    val attachmentType: String?,  // "image", "video", "file", "audio"
+    val attachmentUrl: String?,
+    val replyToSeq: Int? = null,
+    val replyToContent: String? = null
+)
+
+@Entity(tableName = "contacts")
+data class ContactEntity(
+    @PrimaryKey
+    val topicName: String,
+    val displayName: String,
+    val avatar: String?,
+    val lastMessage: String?,
+    val lastMessageTime: Long,
+    val unread: Int,
+    val isGroup: Boolean,
+    val muted: Boolean,
+    val pinned: Boolean
+)
+
+@Entity(tableName = "typing_indicators")
+data class TypingEntity(
+    @PrimaryKey
+    val topicName: String,
+    val who: String,
+    val timestamp: Long
+)
+
+// ─── DAOs ────────────────────────────────────────────────────────
+
+@Dao
+interface MessageDao {
+    @Query("SELECT * FROM messages WHERE topicName = :topicName ORDER BY timestamp ASC, seqId ASC")
+    fun getMessagesForTopic(topicName: String): Flow<List<MessageEntity>>
+
+    @Query("SELECT * FROM messages WHERE topicName = :topicName ORDER BY timestamp ASC, seqId ASC LIMIT :limit OFFSET :offset")
+    suspend fun getMessagesPaged(topicName: String, limit: Int, offset: Int): List<MessageEntity>
+
+    @Query("SELECT MAX(seqId) FROM messages WHERE topicName = :topicName")
+    suspend fun getMaxSeq(topicName: String): Int?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertMessages(messages: List<MessageEntity>)
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertMessage(message: MessageEntity)
+
+    @Query("DELETE FROM messages WHERE seqId = :seqId")
+    suspend fun deleteMessageBySeqId(seqId: Int)
+
+    @Query("UPDATE messages SET content = :content, isEdited = :isEdited WHERE seqId = :seqId")
+    suspend fun updateMessageContent(seqId: Int, content: String, isEdited: Boolean)
+
+    @Query("DELETE FROM messages WHERE topicName = :topicName")
+    suspend fun clearTopicMessages(topicName: String)
+
+    @Query("UPDATE messages SET isRead = 1 WHERE topicName = :topicName AND isOwn = 0")
+    suspend fun markAllRead(topicName: String)
+
+    @Query("UPDATE messages SET attachmentUrl = :url, timestamp = :now WHERE seqId = :seqId")
+    suspend fun updateAttachmentUrl(seqId: Int, url: String, now: Long = System.currentTimeMillis())
+
+    @Query("UPDATE messages SET attachmentUrl = :url, attachmentType = :type, hasAttachment = 1, timestamp = :now WHERE seqId = :seqId")
+    suspend fun updateAttachmentFull(seqId: Int, url: String, type: String, now: Long = System.currentTimeMillis())
+
+    /** Обновить URL вложения в последней собственной записи чата (для echo с сервера) */
+    @Query("UPDATE messages SET attachmentUrl = :url WHERE topicName = :topic AND isOwn = 1 AND hasAttachment = 1 AND seqId < 0")
+    suspend fun updateLastOwnAttachmentUrl(topic: String, url: String)
+}
+
+@Dao
+interface ContactDao {
+    @Query("SELECT * FROM contacts ORDER BY pinned DESC, lastMessageTime DESC")
+    fun getAllContacts(): Flow<List<ContactEntity>>
+
+    @Query("SELECT * FROM contacts WHERE topicName = :topicName")
+    suspend fun getContact(topicName: String): ContactEntity?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertContacts(contacts: List<ContactEntity>)
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertContact(contact: ContactEntity)
+
+    @Query("UPDATE contacts SET unread = 0 WHERE topicName = :topicName")
+    suspend fun clearUnread(topicName: String)
+}
+
+@Dao
+interface TypingDao {
+    @Query("SELECT * FROM typing_indicators WHERE topicName = :topicName")
+    fun getTypingForTopic(topicName: String): Flow<List<TypingEntity>>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun upsertTyping(typing: TypingEntity)
+
+    @Query("DELETE FROM typing_indicators WHERE topicName = :topicName AND who = :who")
+    suspend fun removeTyping(topicName: String, who: String)
+
+    @Query("DELETE FROM typing_indicators WHERE timestamp < :threshold")
+    suspend fun clearExpired(threshold: Long)
+}
+
+// ─── Migration V1 → V2 ─────────────────────────────────────────
+
+/**
+ * Миграция: добавляем поля replyToSeq и replyToContent в messages.
+ * Эти поля нужны для функции "ответ на сообщение".
+ */
+val MIGRATION_1_2 = object : Migration(1, 2) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("ALTER TABLE messages ADD COLUMN replyToSeq INTEGER")
+        database.execSQL("ALTER TABLE messages ADD COLUMN replyToContent TEXT")
+    }
+}
+
+// ─── Database ────────────────────────────────────────────────────
+
+@Database(
+    entities = [MessageEntity::class, ContactEntity::class, TypingEntity::class],
+    version = 2,
+    exportSchema = false
+)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun messageDao(): MessageDao
+    abstract fun contactDao(): ContactDao
+    abstract fun typingDao(): TypingDao
+
+    companion object {
+        @Volatile
+        private var INSTANCE: AppDatabase? = null
+
+        fun getInstance(context: Context): AppDatabase {
+            return INSTANCE ?: synchronized(this) {
+                val instance = Room.databaseBuilder(
+                    context.applicationContext,
+                    AppDatabase::class.java,
+                    "lastochka_db"
+                )
+                    .addMigrations(MIGRATION_1_2)
+                    .build()
+                INSTANCE = instance
+                instance
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/data/model/TinodeProtocol.kt

@@ -0,0 +1,368 @@
+package ru.lastochka.messenger.data.model
+
+import com.google.gson.*
+import com.google.gson.annotations.SerializedName
+import java.lang.reflect.Type
+import java.util.*
+
+// Кастомный десериализатор для PubContent
+// Сервер может слать content как строку ("привет") или объект ({"txt":"привет"} или Drafty {"txt":"","ent":[...]})
+object PubContentDeserializer : JsonDeserializer<PubContent> {
+    override fun deserialize(json: JsonElement, typeOfT: Type, context: JsonDeserializationContext): PubContent {
+        return when {
+            json.isJsonObject -> {
+                val obj = json.asJsonObject
+                val txt = obj.get("txt")?.asString ?: ""
+                val ent = if (obj.has("ent")) {
+                    context.deserialize<Array<DraftyEntity>>(obj.get("ent"), Array<DraftyEntity>::class.java).toList()
+                } else null
+                val fmt = if (obj.has("fmt")) {
+                    context.deserialize<Array<DraftyFmt>>(obj.get("fmt"), Array<DraftyFmt>::class.java).toList()
+                } else null
+                PubContent(txt, ent, fmt)
+            }
+            json.isJsonPrimitive -> PubContent(json.asString)
+            else -> PubContent("")
+        }
+    }
+}
+
+// ─── Client Messages ─────────────────────────────────────────────
+
+data class ClientMsgHi(
+    val hi: HiPacket
+)
+
+data class HiPacket(
+    val id: String,
+    @SerializedName("ver") val version: String = "0.25",
+    @SerializedName("ua") val userAgent: String = "lastochka-android/1.0"
+)
+
+data class ClientMsgAcc(
+    val acc: AccPacket
+)
+
+data class AccPacket(
+    val id: String,
+    val user: String? = null,
+    val scheme: String = "basic",
+    val secret: String,
+    val login: Boolean = false,
+    val desc: DescPacket? = null,
+    val tags: List<String>? = null,
+    val cred: List<Credential>? = null
+)
+
+data class Credential(
+    val meth: String,  // "email", "tel"
+    val val_str: String? = null,  // value - renamed to avoid Kotlin keyword
+    val done: Boolean = false
+)
+
+data class DescPacket(
+    val `public`: TheCard? = null,
+    val private: Any? = null
+)
+
+data class TheCard(
+    val fn: String? = null,
+    val photo: String? = null
+)
+
+data class ClientMsgLogin(
+    val login: LoginPacket
+)
+
+data class LoginPacket(
+    val id: String,
+    val scheme: String = "basic",
+    val secret: String
+)
+
+data class ClientMsgSub(
+    val sub: SubPacket
+)
+
+data class SubPacket(
+    val id: String,
+    val topic: String? = null,
+    val get: MetaGetPacket? = null,
+    val set: MetaSetPacket? = null
+)
+
+data class MetaGetPacket(
+    val desc: MetaGetDesc? = null,
+    val sub: MetaGetSub? = null,
+    val data: MetaGetData? = null,
+    val what: String? = null
+)
+
+data class MetaGetDesc(val ims: Long? = null)
+data class MetaGetSub(val ims: Long? = null) {
+    companion object {
+        /** Запросить ВСЕ подписки (без ims ограничения) */
+        val All = MetaGetSub()  // пустой объект {} при сериализации
+    }
+}
+data class MetaGetData(
+    val since: Int? = null,
+    val limit: Int? = 100
+)
+
+data class MetaSetPacket(
+    val desc: MetaSetDesc? = null,
+    val sub: MetaSetSub? = null
+)
+
+data class MetaSetDesc(
+    val tags: List<String>? = null,
+    val `public`: TheCard? = null,
+    val `private`: Any? = null
+)
+
+/**
+ * Приватные данные пользователя в me-топике.
+ */
+data class PrivateData(
+    val note: String? = null
+)
+
+data class MetaSetSub(val user: String? = null, val mode: String? = null)
+
+data class ClientMsgPub(
+    val pub: PubPacket
+)
+
+data class PubPacket(
+    val id: String,
+    val topic: String,
+    val content: PubContent,
+    val head: PubHead? = null,
+    val extra: PubExtra? = null
+)
+
+data class PubContent(
+    val txt: String = "",
+    val ent: List<DraftyEntity>? = null,
+    val fmt: List<DraftyFmt>? = null
+)
+
+/** Drafty-формат для сообщений с вложениями */
+data class PubContentDrafty(
+    val txt: String = "",
+    val ent: List<DraftyEntity>? = null,
+    val fmt: List<DraftyFmt>? = null
+)
+
+/** Вложение в Drafty */
+data class DraftyEntity(
+    val tp: String = "EX",          // Тип: EX = external
+    val `data`: DraftyData? = null
+)
+
+/** Данные вложения */
+data class DraftyData(
+    val mime: String? = null,             // "image/jpeg", "image/png" и т.д.
+    val name: String? = null,             // имя файла
+    val ref: String? = null,              // URL: "/v0/file/s/abc123.jpg"
+    @SerializedName("val") val val_str: String? = null,  // inline base64 data (от web клиента)
+    val size: Long? = null,               // размер в байтах
+    val width: Int? = null,               // ширина изображения
+    val height: Int? = null               // высота изображения
+)
+
+/** Форматирование в Drafty (ссылка на entity) */
+data class DraftyFmt(
+    val at: Int,                    // позиция начала
+    val len: Int,                   // длина
+    val key: Int                    // индекс в ent
+)
+
+/** Extra с attachments (для garbage collection файлов) */
+data class PubExtra(
+    val attachments: List<String>   // ["/v0/file/s/abc123.jpg"]
+)
+
+data class PubHead(
+    val replaces: String? = null
+)
+
+data class ClientMsgNote(
+    val note: NotePacket
+)
+
+data class NotePacket(
+    val id: String,
+    val topic: String,
+    val what: String,
+    val seq: Int? = null
+)
+
+data class ClientMsgLeave(
+    val leave: LeavePacket
+)
+
+data class LeavePacket(
+    val id: String,
+    val topic: String,
+    val unsub: Boolean = false
+)
+
+data class ClientMsgGet(
+    val get: GetPacket
+)
+
+data class GetPacket(
+    val id: String,
+    val topic: String,
+    val desc: MetaGetDesc? = null,
+    val sub: MetaGetSub? = null,
+    val data: MetaGetData? = null,
+    val what: String? = null
+)
+
+data class ClientMsgSet(
+    val set: SetPacket
+)
+
+data class SetPacket(
+    val id: String,
+    val topic: String,
+    val desc: MetaSetDesc? = null,
+    val sub: MetaSetSub? = null
+)
+
+data class ClientMsgDel(
+    val del: DelPacket
+)
+
+data class DelPacket(
+    val id: String,
+    val topic: String,
+    val seq: DelSeq,
+    val hard: Boolean = false
+)
+
+data class DelSeq(
+    val first: Int,
+    val last: Int
+)
+
+// ─── Server Messages ─────────────────────────────────────────────
+
+data class ServerMessage(
+    val ctrl: CtrlPacket? = null,
+    val data: DataPacket? = null,
+    val meta: MetaPacket? = null,
+    val pres: PresPacket? = null,
+    val info: InfoPacket? = null,
+    val del: DelPacket? = null
+) {
+    val type: MsgType
+        get() = when {
+            ctrl != null -> MsgType.CTRL
+            data != null -> MsgType.DATA
+            meta != null -> MsgType.META
+            pres != null -> MsgType.PRES
+            info != null -> MsgType.INFO
+            del != null -> MsgType.DEL
+            else -> MsgType.UNKNOWN
+        }
+}
+
+enum class MsgType { CTRL, DATA, META, PRES, INFO, DEL, UNKNOWN }
+
+data class CtrlPacket(
+    val id: String? = null,
+    val code: Int,
+    val text: String? = null,
+    val topic: String? = null,
+    val params: CtrlParams? = null
+)
+
+data class CtrlParams(
+    val user: String? = null,
+    val token: String? = null,
+    val recv: Int? = null,
+    val read: Int? = null,
+    val url: String? = null       // URL загруженного файла
+)
+
+data class DataPacket(
+    val topic: String,
+    val from: String? = null,
+    val seq: Int,
+    val content: PubContent,
+    val head: PubHead? = null,
+    val extra: PubExtra? = null,
+    val ts: String? = null
+)
+
+data class MetaPacket(
+    val id: String? = null,
+    val topic: String? = null,
+    val desc: MetaDesc? = null,
+    val sub: List<MetaSub>? = null,
+    val tags: List<String>? = null,
+    val cred: List<Any>? = null,
+    val `public`: TheCard? = null
+)
+
+data class MetaDesc(
+    val created: String? = null,
+    val updated: String? = null,
+    val tags: List<String>? = null,
+    val cred: List<Any>? = null,
+    val acs: Acs? = null,
+    val `public`: TheCard? = null,
+    val `private`: Any? = null
+)
+
+data class MetaSub(
+    val user: String? = null,
+    val topic: String? = null,
+    val updated: String? = null,
+    val seq: Int = 0,
+    val read: Int = 0,
+    val recv: Int = 0,
+    val unread: Int = 0,
+    val acs: Acs? = null,
+    val `public`: TheCard? = null,
+    val private: Any? = null,
+    val lastSeen: LastSeen? = null
+)
+
+data class LastSeen(
+    val when_ts: String? = null,
+    val ua: String? = null,
+    val recv: Long? = null
+)
+
+data class Acs(
+    val want: String? = null,
+    val given: String? = null,
+    val mode: String? = null
+)
+
+data class PresPacket(
+    val topic: String,
+    val what: String,
+    val src: String? = null,
+    val seq: Int? = null,
+    val delp: DelMsg? = null
+)
+
+data class DelMsg(
+    val delId: Int? = null,
+    val first: Int? = null,
+    val last: Int? = null,
+    val all: Boolean = false
+)
+
+data class InfoPacket(
+    val topic: String,
+    val from: String,
+    val what: String,
+    val seq: Int? = null
+)

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/di/AppModule.kt

@@ -0,0 +1,71 @@
+package ru.lastochka.messenger.di
+
+import android.content.Context
+import coil.ImageLoader
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.SessionRepository
+import ru.lastochka.messenger.data.TinodeClient
+import ru.lastochka.messenger.data.local.AppDatabase
+import ru.lastochka.messenger.service.NetworkMonitor
+import javax.inject.Singleton
+
+/**
+ * Hilt модуль для предоставления зависимостей.
+ */
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+
+    @Provides
+    @Singleton
+    fun provideDatabase(@ApplicationContext context: Context): AppDatabase {
+        return AppDatabase.getInstance(context)
+    }
+
+    @Provides
+    @Singleton
+    fun provideTinodeClient(@ApplicationContext context: Context): TinodeClient {
+        val app = context.applicationContext as ru.lastochka.messenger.LastochkaApp
+        return app.tinodeClient
+    }
+
+    @Provides
+    @Singleton
+    fun provideNetworkMonitor(@ApplicationContext context: Context): NetworkMonitor {
+        return NetworkMonitor(context)
+    }
+
+    @Provides
+    @Singleton
+    fun provideSessionRepository(
+        @ApplicationContext context: Context,
+        tinodeClient: TinodeClient,
+        networkMonitor: NetworkMonitor
+    ): SessionRepository {
+        return SessionRepository(context, tinodeClient, networkMonitor)
+    }
+
+    @Provides
+    @Singleton
+    fun provideRepository(
+        tinodeClient: TinodeClient,
+        database: AppDatabase,
+        sessionRepository: SessionRepository
+    ): ChatRepository {
+        return ChatRepository(tinodeClient, database, sessionRepository)
+    }
+
+    @Provides
+    @Singleton
+    fun provideImageLoader(
+        @ApplicationContext context: Context,
+        tinodeClient: TinodeClient
+    ): ImageLoader {
+        return createImageLoader(context, tinodeClient)
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/di/CoilModule.kt

@@ -0,0 +1,80 @@
+package ru.lastochka.messenger.di
+
+import android.content.Context
+import coil.ImageLoader
+import coil.disk.DiskCache
+import coil.memory.MemoryCache
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import okhttp3.Response
+import ru.lastochka.messenger.data.TinodeClient
+import timber.log.Timber
+
+/**
+ * OkHttp Interceptor для добавления заголовков авторизации Tinode
+ * к запросам загрузки файлов.
+ *
+ * Официальный Tinode SDK использует заголовки:
+ *   X-Tinode-APIKey: <apikey>
+ *   X-Tinode-Auth: Token <token>
+ *
+ *而不是 query-параметры (?apikey=...&secret=...),
+ * которые сервер отклоняет с 400 malformed.
+ */
+class TinodeAuthInterceptor(
+    private val tinodeClient: TinodeClient
+) : Interceptor {
+
+    override fun intercept(chain: Interceptor.Chain): Response {
+        val originalRequest = chain.request()
+        val url = originalRequest.url.toString()
+
+        // Добавляем заголовки ТОЛЬКО для запросов к нашему серверу
+        if (url.contains(tinodeClient.serverHostName)) {
+            val authToken = tinodeClient.getAuthToken()
+            if (authToken != null) {
+                val newRequest = originalRequest.newBuilder()
+                    .header("X-Tinode-APIKey", tinodeClient.getApiKey())
+                    .header("X-Tinode-Auth", "Token $authToken")
+                    .build()
+                Timber.d("TinodeAuthInterceptor: added auth headers for $url")
+                return chain.proceed(newRequest)
+            } else {
+                Timber.w("TinodeAuthInterceptor: no auth token available for $url")
+            }
+        }
+
+        return chain.proceed(originalRequest)
+    }
+}
+
+/**
+ * Создать ImageLoader для Coil с OkHttp клиентом,
+ * который автоматически добавляет заголовки авторизации Tinode.
+ */
+fun createImageLoader(
+    context: Context,
+    tinodeClient: TinodeClient
+): ImageLoader {
+    val okHttpClient = OkHttpClient.Builder()
+        .addInterceptor(TinodeAuthInterceptor(tinodeClient))
+        .connectTimeout(30, java.util.concurrent.TimeUnit.SECONDS)
+        .readTimeout(60, java.util.concurrent.TimeUnit.SECONDS)
+        .build()
+
+    return ImageLoader.Builder(context)
+        .okHttpClient(okHttpClient)
+        .memoryCache {
+            MemoryCache.Builder(context)
+                .maxSizePercent(0.25) // 25% доступной памяти
+                .build()
+        }
+        .diskCache {
+            DiskCache.Builder()
+                .directory(context.cacheDir.resolve("coil_image_cache"))
+                .maxSizeBytes(100L * 1024 * 1024) // 100 MB
+                .build()
+        }
+        .crossfade(true)
+        .build()
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/navigation/Screen.kt

@@ -0,0 +1,23 @@
+package ru.lastochka.messenger.navigation
+
+/**
+ * Экраны приложения для Compose Navigation.
+ */
+sealed class Screen(val route: String) {
+    data object Chats : Screen("chats")
+    data object Chat : Screen("chat/{topicName}/{topicTitle}") {
+        fun createRoute(topicName: String, topicTitle: String) = "chat/$topicName/$topicTitle"
+    }
+    data object NewChat : Screen("new_chat")
+
+    data object Calls : Screen("calls")
+
+    data object Settings : Screen("settings")
+    data object Profile : Screen("profile")
+    data object ContactInfo : Screen("contact_info/{topicName}/{topicTitle}") {
+        fun createRoute(topicName: String, topicTitle: String) = "contact_info/$topicName/$topicTitle"
+    }
+    data object CreateGroup : Screen("create_group")
+    data object Login : Screen("login")
+    data object Register : Screen("register")
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/service/LastochkaFirebaseMessagingService.kt

@@ -0,0 +1,102 @@
+package ru.lastochka.messenger.service
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Intent
+import android.os.Build
+import androidx.core.app.NotificationCompat
+import com.google.firebase.messaging.FirebaseMessagingService
+import com.google.firebase.messaging.RemoteMessage
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.*
+import ru.lastochka.messenger.MainActivity
+import ru.lastochka.messenger.R
+import ru.lastochka.messenger.data.SessionRepository
+import ru.lastochka.messenger.data.TinodeHttpClient
+import javax.inject.Inject
+
+/**
+ * Сервис для обработки Push-уведомлений (FCM).
+ */
+@AndroidEntryPoint
+class LastochkaFirebaseMessagingService : FirebaseMessagingService() {
+
+    @Inject lateinit var sessionRepository: SessionRepository
+
+    private val serviceScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+
+    override fun onMessageReceived(message: RemoteMessage) {
+        super.onMessageReceived(message)
+
+        message.notification?.let { notification ->
+            val title = notification.title ?: "Ласточка"
+            val body = notification.body ?: "Новое сообщение"
+
+            // Данные сообщения (topicName и т.д.)
+            val topicName = message.data["topicName"]
+            val seq = message.data["seq"]?.toIntOrNull()
+
+            showNotification(title, body, topicName, seq)
+        }
+    }
+
+    override fun onNewToken(token: String) {
+        super.onNewToken(token)
+        // Отправляем новый токен на сервер Tinode при наличии сессии
+        serviceScope.launch {
+            try {
+                if (sessionRepository.isAuthenticated) {
+                    // TODO: tinodeClient.setPushToken(token) — когда метод будет добавлен
+                    android.util.Log.d("FCM", "New token: $token (will be sent to server)")
+                }
+            } catch (e: Exception) {
+                android.util.Log.e("FCM", "Failed to send push token", e)
+            }
+        }
+    }
+
+    private fun showNotification(title: String, body: String, topicName: String?, seq: Int?) {
+        val channelId = "lastochka_messages"
+        val notificationId = seq ?: System.currentTimeMillis().toInt() % 100000
+        val notificationManager = getSystemService(NotificationManager::class.java)
+
+        // Создаем канал (для Android 8.0+)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(
+                channelId,
+                "Сообщения",
+                NotificationManager.IMPORTANCE_HIGH
+            ).apply {
+                description = "Уведомления о новых сообщениях"
+            }
+            notificationManager.createNotificationChannel(channel)
+        }
+
+        // Intent для открытия чата при клике
+        val intent = Intent(this, MainActivity::class.java).apply {
+            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
+            if (topicName != null) {
+                putExtra("topicName", topicName)
+            }
+        }
+        
+        val pendingIntent = PendingIntent.getActivity(
+            this,
+            0,
+            intent,
+            PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+        )
+
+        val notification = NotificationCompat.Builder(this, channelId)
+            .setSmallIcon(R.drawable.logo_splash) // Или иконка сообщения
+            .setContentTitle(title)
+            .setContentText(body)
+            .setPriority(NotificationCompat.PRIORITY_HIGH)
+            .setAutoCancel(true)
+            .setContentIntent(pendingIntent)
+            .build()
+
+        notificationManager.notify(notificationId, notification)
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/service/NetworkMonitor.kt

@@ -0,0 +1,73 @@
+package ru.lastochka.messenger.service
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.*
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Мониторинг состояния сети.
+ * При восстановлении подключения автоматически триггерит реконнект.
+ */
+@Singleton
+class NetworkMonitor @Inject constructor(
+    @ApplicationContext private val context: Context
+) {
+    private val _isConnected = MutableStateFlow(false)
+    val isConnected: StateFlow<Boolean> = _isConnected.asStateFlow()
+
+    private val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
+
+    private val networkCallback = object : ConnectivityManager.NetworkCallback() {
+        override fun onAvailable(network: Network) {
+            _isConnected.value = true
+        }
+
+        override fun onLost(network: Network) {
+            _isConnected.value = false
+        }
+
+        override fun onCapabilitiesChanged(
+            network: Network,
+            networkCapabilities: NetworkCapabilities
+        ) {
+            // Сеть всё ещё доступна
+            _isConnected.value = true
+        }
+    }
+
+    /**
+     * Начать мониторинг сети.
+     * Вызывать при старте приложения.
+     */
+    fun startMonitoring() {
+        // Проверка текущего состояния
+        val currentNetwork = connectivityManager.activeNetwork
+        val capabilities = connectivityManager.getNetworkCapabilities(currentNetwork)
+        _isConnected.value = capabilities?.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) == true
+
+        // Регистрация callback
+        val request = NetworkRequest.Builder()
+            .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+            .build()
+        connectivityManager.registerNetworkCallback(request, networkCallback)
+    }
+
+    /**
+     * Остановить мониторинг.
+     * Вызывать при выходе из приложения.
+     */
+    fun stopMonitoring() {
+        try {
+            connectivityManager.unregisterNetworkCallback(networkCallback)
+        } catch (e: IllegalArgumentException) {
+            // Callback не зарегистрирован — игнорируем
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/components/Avatar.kt

@@ -0,0 +1,127 @@
+package ru.lastochka.messenger.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import coil.compose.AsyncImage
+import ru.lastochka.messenger.ui.theme.AvatarColors
+
+/**
+ * Аватар с инициалами и цветовым хешем (как в lastochka-ui).
+ */
+@Composable
+fun Avatar(
+    name: String,
+    modifier: Modifier = Modifier,
+    size: Dp = 48.dp,
+    avatarUrl: String? = null,
+    showOnlineIndicator: Boolean = false,
+    isOnline: Boolean = false
+) {
+    Box(modifier = modifier.size(size)) {
+        // Аватар
+        if (!avatarUrl.isNullOrBlank()) {
+            AsyncImage(
+                model = avatarUrl,
+                contentDescription = name,
+                modifier = Modifier
+                    .fillMaxSize()
+                    .clip(CircleShape),
+                contentScale = ContentScale.Crop
+            )
+        } else {
+            val colorIndex = remember(name) {
+                (name.hashCode().and(0x7FFFFFFF)) % AvatarColors.size
+            }
+            val bgColor = remember(colorIndex) {
+                AvatarColors[colorIndex]
+            }
+            val initials = remember(name) {
+                name.split(" ")
+                    .take(2)
+                    .mapNotNull { it.firstOrNull()?.uppercase() }
+                    .joinToString("")
+            }
+
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .clip(CircleShape)
+                    .background(bgColor),
+                contentAlignment = Alignment.Center
+            ) {
+                Text(
+                    text = initials,
+                    color = Color.White,
+                    fontSize = (size.value * 0.38f).sp,
+                    fontWeight = FontWeight.SemiBold,
+                    textAlign = TextAlign.Center
+                )
+            }
+        }
+
+        // Индикатор онлайн
+        if (showOnlineIndicator) {
+            Box(
+                modifier = Modifier
+                    .size((size.value * 0.28f).dp)
+                    .align(Alignment.BottomEnd)
+                    .clip(CircleShape)
+                    .background(if (isOnline) Color(0xFF40C040) else Color(0xFFBBBB66))
+                    .border(1.5.dp, MaterialTheme.colorScheme.surface, CircleShape)
+            )
+        }
+    }
+}
+
+/**
+ * Аватар поменьше (для списка чатов).
+ */
+@Composable
+fun AvatarSmall(
+    name: String,
+    modifier: Modifier = Modifier,
+    avatarUrl: String? = null,
+    isOnline: Boolean = false
+) {
+    Avatar(
+        name = name,
+        modifier = modifier,
+        size = 48.dp,
+        avatarUrl = avatarUrl,
+        showOnlineIndicator = true,
+        isOnline = isOnline
+    )
+}
+
+/**
+ * Аватар побольше (для хедера чата).
+ */
+@Composable
+fun AvatarLarge(
+    name: String,
+    modifier: Modifier = Modifier,
+    avatarUrl: String? = null,
+    isOnline: Boolean = false
+) {
+    Avatar(
+        name = name,
+        modifier = modifier,
+        size = 40.dp,
+        avatarUrl = avatarUrl,
+        showOnlineIndicator = true,
+        isOnline = isOnline
+    )
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/components/ChatHeader.kt

@@ -0,0 +1,124 @@
+package ru.lastochka.messenger.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+
+/**
+ * Хедер чата (как в lastochka-ui ChatHeader).
+ *
+ * Показывает: аватар, имя, статус (онлайн/typing), кнопки действий.
+ */
+@Composable
+fun ChatHeader(
+    name: String,
+    statusText: String?,
+    isOnline: Boolean,
+    avatarUrl: String? = null,
+    onBack: () -> Unit,
+    onCall: () -> Unit,
+    onMore: () -> Unit,
+    onClick: (() -> Unit)? = null,
+    modifier: Modifier = Modifier
+) {
+    Surface(
+        modifier = modifier.fillMaxWidth(),
+        color = MaterialTheme.colorScheme.surface,
+        tonalElevation = 1.dp
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 4.dp, vertical = 8.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            // Кнопка назад
+            IconButton(onClick = onBack) {
+                Icon(
+                    imageVector = Icons.Default.ArrowBack,
+                    contentDescription = "Назад",
+                    tint = MaterialTheme.colorScheme.onSurface
+                )
+            }
+
+            // Аватар + Имя (Кликабельная область)
+            Row(
+                modifier = Modifier
+                    .weight(1f)
+                    .clickable(enabled = onClick != null, onClick = onClick ?: {})
+                    .padding(horizontal = 4.dp),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                AvatarLarge(
+                    name = name,
+                    avatarUrl = avatarUrl,
+                    isOnline = isOnline
+                )
+
+                Column(
+                    modifier = Modifier.padding(horizontal = 8.dp)
+                ) {
+                    Text(
+                        text = name,
+                        style = MaterialTheme.typography.titleMedium.copy(
+                            fontWeight = FontWeight.SemiBold
+                        ),
+                        color = MaterialTheme.colorScheme.onSurface,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis
+                    )
+
+                    if (statusText != null) {
+                        Text(
+                            text = statusText,
+                            style = MaterialTheme.typography.bodySmall,
+                            color = if (isOnline)
+                                androidx.compose.ui.graphics.Color(0xFF40C040)
+                            else
+                                MaterialTheme.colorScheme.onSurfaceVariant,
+                            maxLines = 1,
+                            overflow = TextOverflow.Ellipsis
+                        )
+                    }
+                }
+            }
+
+            // Кнопка звонка
+            IconButton(onClick = onCall) {
+                Icon(
+                    imageVector = Icons.Default.Call,
+                    contentDescription = "Позвонить",
+                    tint = MaterialTheme.colorScheme.primary
+                )
+            }
+
+            // Кнопка видеозвонка
+            IconButton(onClick = onCall) {
+                Icon(
+                    imageVector = Icons.Default.Videocam,
+                    contentDescription = "Видеозвонок",
+                    tint = MaterialTheme.colorScheme.primary
+                )
+            }
+
+            // Меню
+            IconButton(onClick = onMore) {
+                Icon(
+                    imageVector = Icons.Default.MoreVert,
+                    contentDescription = "Ещё",
+                    tint = MaterialTheme.colorScheme.onSurface
+                )
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/components/ChatItem.kt

@@ -0,0 +1,148 @@
+package ru.lastochka.messenger.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Done
+import androidx.compose.material.icons.filled.DoneAll
+import androidx.compose.material.icons.filled.NotificationsOff
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.ui.theme.LocalBubbleColors
+import ru.lastochka.messenger.ui.theme.ReadReceipt
+import ru.lastochka.messenger.ui.theme.SentReceipt
+import java.text.SimpleDateFormat
+import java.util.*
+
+/**
+ * Элемент чата в списке (как в lastochka-ui Sidebar → ChatItem).
+ */
+@Composable
+fun ChatItem(
+    contact: ContactInfo,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val timeFormat = SimpleDateFormat("HH:mm", Locale.getDefault())
+    val dateFormat = SimpleDateFormat("dd.MM", Locale.getDefault())
+
+    val timeString = remember(contact.timestamp) {
+        contact.timestamp?.let { ts ->
+            val cal = Calendar.getInstance()
+            cal.time = ts
+            val now = Calendar.getInstance()
+
+            if (cal.get(Calendar.YEAR) == now.get(Calendar.YEAR) &&
+                cal.get(Calendar.DAY_OF_YEAR) == now.get(Calendar.DAY_OF_YEAR)) {
+                timeFormat.format(ts)
+            } else {
+                dateFormat.format(ts)
+            }
+        } ?: ""
+    }
+
+    Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 8.dp, vertical = 2.dp),
+        onClick = onClick,
+        colors = CardDefaults.cardColors(
+            containerColor = MaterialTheme.colorScheme.surface
+        ),
+        shape = RoundedCornerShape(12.dp)
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(12.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            // Аватар
+            AvatarSmall(
+                name = contact.displayName,
+                avatarUrl = contact.avatar,
+                isOnline = contact.isOnline && !contact.isGroup
+            )
+
+            Spacer(modifier = Modifier.width(12.dp))
+
+            // Контент
+            Column(modifier = Modifier.weight(1f)) {
+                // Имя + время
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = contact.displayName,
+                        style = MaterialTheme.typography.titleMedium,
+                        color = MaterialTheme.colorScheme.onSurface,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis
+                    )
+
+                    if (timeString.isNotEmpty()) {
+                        Text(
+                            text = timeString,
+                            style = MaterialTheme.typography.labelSmall,
+                            color = if (contact.unread > 0)
+                                MaterialTheme.colorScheme.primary
+                            else
+                                MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(4.dp))
+
+                // Превью сообщения + бейдж непрочитанных
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = contact.lastMessage ?: "",
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis,
+                        modifier = Modifier.weight(1f)
+                    )
+
+                    if (contact.unread > 0) {
+                        Spacer(modifier = Modifier.width(8.dp))
+                        Badge(
+                            containerColor = MaterialTheme.colorScheme.primary,
+                            contentColor = Color.White
+                        ) {
+                            Text(
+                                text = if (contact.unread > 99) "99+" else contact.unread.toString(),
+                                style = MaterialTheme.typography.labelSmall,
+                                modifier = Modifier.padding(horizontal = 2.dp)
+                            )
+                        }
+                    }
+
+                    if (contact.muted) {
+                        Spacer(modifier = Modifier.width(4.dp))
+                        Icon(
+                            imageVector = Icons.Default.NotificationsOff,
+                            contentDescription = "Muted",
+                            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                            modifier = Modifier.size(16.dp)
+                        )
+                    }
+                }
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/components/MessageBubble.kt

@@ -0,0 +1,311 @@
+package ru.lastochka.messenger.ui.components
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.gestures.detectHorizontalDragGestures
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Done
+import androidx.compose.material.icons.filled.DoneAll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import coil.compose.SubcomposeAsyncImage
+import coil.request.ImageRequest
+import timber.log.Timber
+import ru.lastochka.messenger.LastochkaApp
+import ru.lastochka.messenger.data.UiMessage
+import ru.lastochka.messenger.ui.theme.LocalBubbleColors
+import ru.lastochka.messenger.ui.theme.ReadReceipt
+import ru.lastochka.messenger.ui.theme.SentReceipt
+import java.text.SimpleDateFormat
+import java.util.*
+import kotlin.math.roundToInt
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun MessageBubble(
+    message: UiMessage,
+    modifier: Modifier = Modifier,
+    isFirstInGroup: Boolean = false,
+    isLastInGroup: Boolean = false,
+    showSender: Boolean = false,
+    onLongClick: (() -> Unit)? = null,
+    onSwipeReply: (() -> Unit)? = null,
+    onImageClick: ((String) -> Unit)? = null
+) {
+    val bubbleColors = LocalBubbleColors.current
+    val timeFormat = SimpleDateFormat("HH:mm", Locale.getDefault())
+
+    val bgColor = if (message.isOwn) bubbleColors.own else bubbleColors.peer
+    val textColor = if (message.isOwn) bubbleColors.ownText else bubbleColors.peerText
+
+    // State for swipe offset
+    var offsetX by remember { mutableFloatStateOf(0f) }
+    val maxOffset = 100f
+
+    val bubbleShape = when {
+        message.isOwn -> when {
+            isLastInGroup -> RoundedCornerShape(topStart = 18.dp, topEnd = 18.dp, bottomStart = 18.dp, bottomEnd = 4.dp)
+            else -> RoundedCornerShape(topStart = 18.dp, topEnd = 18.dp, bottomStart = 4.dp, bottomEnd = 4.dp)
+        }
+        else -> when {
+            isLastInGroup -> RoundedCornerShape(topStart = 18.dp, topEnd = 18.dp, bottomStart = 4.dp, bottomEnd = 18.dp)
+            else -> RoundedCornerShape(topStart = 4.dp, topEnd = 18.dp, bottomStart = 4.dp, bottomEnd = 4.dp)
+        }
+    }
+
+    val alignment = if (message.isOwn) Alignment.End else Alignment.Start
+
+    Column(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 12.dp, vertical = if (isFirstInGroup) 8.dp else 2.dp)
+            .offset { IntOffset(offsetX.roundToInt(), 0) }
+            .pointerInput(Unit) {
+                detectHorizontalDragGestures(
+                    onDragEnd = {
+                        if (offsetX > maxOffset / 2) {
+                            onSwipeReply?.invoke()
+                        }
+                        offsetX = 0f
+                    },
+                    onHorizontalDrag = { _, dragAmount ->
+                        if (dragAmount > 0) { // Only allow swipe right
+                            offsetX = (offsetX + dragAmount).coerceIn(0f, maxOffset)
+                        }
+                    }
+                )
+            }
+            .combinedClickable(onClick = {}, onLongClick = onLongClick ?: {}),
+        horizontalAlignment = alignment
+    ) {
+        if (showSender && !message.isOwn) {
+            Text(
+                text = message.senderName,
+                style = MaterialTheme.typography.labelSmall,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.padding(start = 4.dp, bottom = 2.dp)
+            )
+        }
+
+        Box(
+            modifier = Modifier
+                .clip(bubbleShape)
+                .background(bgColor)
+                .padding(horizontal = 12.dp, vertical = 8.dp)
+                .widthIn(max = 280.dp)
+        ) {
+            Column {
+                // Reply Quote
+                if (message.replyToContent != null) {
+                    Box(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(bottom = 4.dp)
+                            .background(Color(0xFFE0E0E0).copy(alpha = 0.3f), shape = RoundedCornerShape(4.dp))
+                            .padding(start = 8.dp, end = 8.dp, top = 4.dp, bottom = 4.dp)
+                    ) {
+                        Row {
+                            Box(
+                                modifier = Modifier
+                                    .width(3.dp)
+                                    .fillMaxHeight()
+                                    .background(MaterialTheme.colorScheme.primary, shape = RoundedCornerShape(2.dp))
+                            )
+                            Spacer(modifier = Modifier.width(6.dp))
+                            Column {
+                                Text("Ответ", style = MaterialTheme.typography.labelSmall, color = MaterialTheme.colorScheme.primary, fontWeight = FontWeight.Bold)
+                                Text(message.replyToContent, style = MaterialTheme.typography.bodySmall, color = textColor.copy(alpha = 0.7f), maxLines = 2, overflow = TextOverflow.Ellipsis)
+                            }
+                        }
+                    }
+                }
+
+                // Image attachment
+                if (message.hasAttachment) {
+                    val context = LocalContext.current
+                    Timber.d("MessageBubble: hasAttachment=true, seqId=${message.seqId}, attachmentUrl=${message.attachmentUrl?.take(50)}")
+
+                    if (message.attachmentUrl != null) {
+                        // Determine if this is a data URL (base64 inline) or a server URL
+                        val imageData = if (message.attachmentUrl.startsWith("data:")) {
+                            // Inline base64 image from web client
+                            message.attachmentUrl
+                        } else {
+                            // Server URL — build full download URL with auth headers
+                            val app = context.applicationContext as LastochkaApp
+                            app.tinodeClient.buildFileDownloadUrl(message.attachmentUrl)
+                        }
+                        Timber.d("MessageBubble: loading image, isBase64=${imageData.startsWith("data:")}, isOwn=${message.isOwn}")
+
+                        SubcomposeAsyncImage(
+                            model = ImageRequest.Builder(context)
+                                .data(imageData)
+                                .crossfade(true)
+                                .listener(
+                                    onSuccess = { _, result ->
+                                        Timber.d("MessageBubble: image loaded successfully, size=${result.drawable?.intrinsicWidth}x${result.drawable?.intrinsicHeight}")
+                                    },
+                                    onError = { _, result ->
+                                        Timber.e("MessageBubble: image load failed: ${result.throwable?.message}")
+                                    }
+                                )
+                                .build(),
+                            contentDescription = "Вложение",
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .heightIn(max = 300.dp)
+                                .clip(RoundedCornerShape(8.dp))
+                                .background(Color(0xFFCCCCCC))
+                                .padding(bottom = 4.dp)
+                                .clickable(enabled = onImageClick != null) {
+                                    onImageClick?.invoke(imageData)
+                                },
+                            contentScale = ContentScale.Fit,
+                            loading = {
+                                Box(
+                                    modifier = Modifier.fillMaxSize(),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    CircularProgressIndicator(
+                                        modifier = Modifier.size(24.dp),
+                                        strokeWidth = 2.dp
+                                    )
+                                }
+                            },
+                            error = {
+                                val exc = it.result?.throwable
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .height(100.dp)
+                                        .clickable { exc?.printStackTrace() },
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                                        Text(
+                                            text = "Ошибка загрузки",
+                                            style = MaterialTheme.typography.bodySmall,
+                                            color = Color.Gray
+                                        )
+                                        exc?.message?.let { msg ->
+                                            Text(
+                                                text = msg.take(50),
+                                                style = MaterialTheme.typography.labelSmall,
+                                                color = Color.Red,
+                                                modifier = Modifier.padding(top = 4.dp)
+                                            )
+                                        }
+                                    }
+                                }
+                            }
+                        )
+                    } else {
+                        // Placeholder: показываем иконку при отправке
+                        Box(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .heightIn(max = 200.dp)
+                                .clip(RoundedCornerShape(8.dp))
+                                .background(Color(0xFFE0E0E0))
+                                .padding(32.dp),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                                Text(
+                                    text = "📷",
+                                    fontSize = 32.sp,
+                                    modifier = Modifier.padding(bottom = 8.dp)
+                                )
+                                Spacer(modifier = Modifier.height(8.dp))
+                                Text(
+                                    text = "Отправка...",
+                                    style = MaterialTheme.typography.bodySmall,
+                                    color = Color.Gray
+                                )
+                            }
+                        }
+                    }
+                }
+
+                // Text content (если есть caption)
+                if (message.content.isNotBlank() && message.content != " ") {
+                    Text(
+                        text = message.content,
+                        style = MaterialTheme.typography.bodyLarge.copy(color = textColor),
+                        modifier = Modifier.padding(end = 48.dp)
+                    )
+                }
+
+                Row(
+                    modifier = Modifier.align(Alignment.End).padding(top = 4.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(2.dp)
+                ) {
+                    if (message.isEdited) {
+                        Text(text = "ред.", style = MaterialTheme.typography.labelSmall, color = textColor.copy(alpha = 0.6f))
+                    }
+                    Text(
+                        text = timeFormat.format(message.timestamp),
+                        style = MaterialTheme.typography.labelSmall,
+                        color = textColor.copy(alpha = 0.6f)
+                    )
+                    if (message.isOwn) {
+                        Icon(
+                            imageVector = if (message.isRead) Icons.Filled.DoneAll else Icons.Filled.Done,
+                            contentDescription = null,
+                            tint = if (message.isRead) ReadReceipt else SentReceipt,
+                            modifier = Modifier.size(14.dp)
+                        )
+                    }
+                }
+            }
+        }
+    }
+}
+
+/**
+ * Разделитель дат.
+ */
+@Composable
+fun DateDivider(date: Date, modifier: Modifier = Modifier) {
+    val today = Calendar.getInstance()
+    val messageDate = Calendar.getInstance().apply { time = date }
+
+    val label = when {
+        today.get(Calendar.YEAR) == messageDate.get(Calendar.YEAR) &&
+                today.get(Calendar.DAY_OF_YEAR) == messageDate.get(Calendar.DAY_OF_YEAR) -> "Сегодня"
+        today.get(Calendar.YEAR) == messageDate.get(Calendar.YEAR) &&
+                today.get(Calendar.DAY_OF_YEAR) - messageDate.get(Calendar.DAY_OF_YEAR) == 1 -> "Вчера"
+        else -> SimpleDateFormat("dd MMMM yyyy", Locale("ru")).format(date)
+    }
+
+    Box(
+        modifier = modifier.fillMaxWidth().padding(vertical = 16.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = label,
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier
+                .background(color = MaterialTheme.colorScheme.surfaceVariant, shape = RoundedCornerShape(12.dp))
+                .padding(horizontal = 16.dp, vertical = 6.dp)
+        )
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/components/MessageInput.kt

@@ -0,0 +1,126 @@
+package ru.lastochka.messenger.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.unit.dp
+
+/**
+ * Поле ввода сообщения (как в lastochka-ui MessageInput).
+ *
+ * Стиль: скруглённое, светлый фон, иконка отправки справа.
+ */
+@Composable
+fun MessageInput(
+    text: String,
+    onTextChanged: (String) -> Unit,
+    onSend: () -> Unit,
+    onAttach: () -> Unit,
+    modifier: Modifier = Modifier,
+    placeholder: String = "Сообщение…",
+    replyToMessage: ru.lastochka.messenger.data.UiMessage? = null
+) {
+    var isFocused by remember { mutableStateOf(false) }
+
+    Row(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 8.dp, vertical = 8.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        // Кнопка скрепки
+        IconButton(
+            onClick = onAttach,
+            modifier = Modifier.size(40.dp)
+        ) {
+            Icon(
+                imageVector = Icons.Default.AttachFile,
+                contentDescription = "Прикрепить",
+                tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.size(24.dp)
+            )
+        }
+
+        Spacer(modifier = Modifier.width(8.dp))
+
+        // Поле ввода
+        Surface(
+            modifier = Modifier.weight(1f),
+            shape = RoundedCornerShape(24.dp),
+            color = MaterialTheme.colorScheme.surfaceVariant,
+            tonalElevation = 0.dp
+        ) {
+            BasicTextField(
+                value = text,
+                onValueChange = onTextChanged,
+                textStyle = TextStyle(
+                    color = MaterialTheme.colorScheme.onSurface,
+                    fontSize = MaterialTheme.typography.bodyLarge.fontSize
+                ),
+                cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp, vertical = 12.dp)
+                    .onFocusChanged { isFocused = it.isFocused },
+                decorationBox = { innerTextField ->
+                    Box {
+                        if (text.isEmpty()) {
+                            Text(
+                                text = placeholder,
+                                style = MaterialTheme.typography.bodyLarge,
+                                color = MaterialTheme.colorScheme.onSurfaceVariant
+                            )
+                        }
+                        innerTextField()
+                    }
+                },
+                maxLines = 6
+            )
+        }
+
+        Spacer(modifier = Modifier.width(8.dp))
+
+        // Кнопка отправки / микрофон
+        IconButton(
+            onClick = {
+                if (text.isNotBlank()) {
+                    onSend()
+                }
+            },
+            modifier = Modifier
+                .size(40.dp)
+                .clip(CircleShape)
+                .background(
+                    if (text.isNotBlank())
+                        MaterialTheme.colorScheme.primary
+                    else
+                        MaterialTheme.colorScheme.surfaceVariant
+                )
+        ) {
+            Icon(
+                imageVector = if (text.isNotBlank())
+                    Icons.Default.Send
+                else
+                    Icons.Default.Mic,
+                contentDescription = if (text.isNotBlank()) "Отправить" else "Голосовое",
+                tint = if (text.isNotBlank())
+                    Color.White
+                else
+                    MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.size(20.dp)
+            )
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/auth/LoginScreen.kt

@@ -0,0 +1,222 @@
+package ru.lastochka.messenger.ui.screens.auth
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.focus.FocusDirection
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import ru.lastochka.messenger.R
+import ru.lastochka.messenger.ui.theme.BrandPrimary
+import ru.lastochka.messenger.viewmodel.AuthViewModel
+import ru.lastochka.messenger.viewmodel.AuthUiState
+
+/**
+ * Экран входа (как в lastochka-ui LoginScreen).
+ */
+@Composable
+fun LoginScreen(
+    onLoginSuccess: () -> Unit,
+    onNavigateToRegister: () -> Unit,
+    viewModel: AuthViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    var username by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+    var passwordVisible by remember { mutableStateOf(false) }
+    val focusManager = LocalFocusManager.current
+
+    // Автоматический переход при успехе
+    LaunchedEffect(uiState) {
+        if (uiState is AuthUiState.Success) {
+            onLoginSuccess()
+        }
+    }
+
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(BrandPrimary),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(32.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            // Логотип
+            Image(
+                painter = painterResource(id = R.drawable.logo_splash),
+                contentDescription = "Ласточка",
+                modifier = Modifier
+                    .size(120.dp)
+                    .padding(bottom = 16.dp),
+                contentScale = ContentScale.Fit
+            )
+
+            // Заголовок
+            Text(
+                text = stringResource(R.string.login_title),
+                style = MaterialTheme.typography.displaySmall,
+                color = Color.White,
+                fontWeight = FontWeight.Bold,
+                textAlign = TextAlign.Center
+            )
+
+            Text(
+                text = "Твой дом в интернете",
+                style = MaterialTheme.typography.bodyLarge,
+                color = Color.White.copy(alpha = 0.8f),
+                textAlign = TextAlign.Center,
+                modifier = Modifier.padding(bottom = 32.dp)
+            )
+
+            // Форма
+            Card(
+                modifier = Modifier.fillMaxWidth(),
+                shape = RoundedCornerShape(16.dp),
+                colors = CardDefaults.cardColors(
+                    containerColor = Color.White
+                )
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(24.dp)
+                ) {
+                    // Username
+                    OutlinedTextField(
+                        value = username,
+                        onValueChange = { username = it },
+                        label = { Text(stringResource(R.string.login_username)) },
+                        leadingIcon = {
+                            Icon(Icons.Default.Person, contentDescription = null)
+                        },
+                        singleLine = true,
+                        keyboardOptions = KeyboardOptions(imeAction = ImeAction.Next),
+                        keyboardActions = KeyboardActions(
+                            onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                        ),
+                        modifier = Modifier.fillMaxWidth()
+                    )
+
+                    Spacer(modifier = Modifier.height(16.dp))
+
+                    // Password
+                    OutlinedTextField(
+                        value = password,
+                        onValueChange = { password = it },
+                        label = { Text(stringResource(R.string.login_password)) },
+                        leadingIcon = {
+                            Icon(Icons.Default.Lock, contentDescription = null)
+                        },
+                        trailingIcon = {
+                            IconButton(onClick = { passwordVisible = !passwordVisible }) {
+                                Icon(
+                                    imageVector = if (passwordVisible)
+                                        Icons.Default.Visibility
+                                    else
+                                        Icons.Default.VisibilityOff,
+                                    contentDescription = null
+                                )
+                            }
+                        },
+                        visualTransformation = if (passwordVisible)
+                            VisualTransformation.None
+                        else
+                            PasswordVisualTransformation(),
+                        singleLine = true,
+                        keyboardOptions = KeyboardOptions(
+                            keyboardType = KeyboardType.Password,
+                            imeAction = ImeAction.Done
+                        ),
+                        keyboardActions = KeyboardActions(
+                            onDone = {
+                                focusManager.clearFocus()
+                                viewModel.login(username, password)
+                            }
+                        ),
+                        modifier = Modifier.fillMaxWidth()
+                    )
+
+                    // Error
+                    if (uiState is AuthUiState.Error) {
+                        Spacer(modifier = Modifier.height(8.dp))
+                        Text(
+                            text = (uiState as AuthUiState.Error).message,
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.error,
+                            modifier = Modifier.fillMaxWidth()
+                        )
+                    }
+
+                    Spacer(modifier = Modifier.height(24.dp))
+
+                    // Login button
+                    Button(
+                        onClick = { viewModel.login(username, password) },
+                        enabled = uiState !is AuthUiState.Loading &&
+                                username.isNotBlank() && password.isNotBlank(),
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(48.dp),
+                        shape = RoundedCornerShape(12.dp),
+                        colors = ButtonDefaults.buttonColors(
+                            containerColor = BrandPrimary
+                        )
+                    ) {
+                        if (uiState is AuthUiState.Loading) {
+                            CircularProgressIndicator(
+                                modifier = Modifier.size(24.dp),
+                                color = Color.White
+                            )
+                        } else {
+                            Text(
+                                text = stringResource(R.string.login_button),
+                                style = MaterialTheme.typography.titleMedium,
+                                color = Color.White
+                            )
+                        }
+                    }
+
+                    // Register link
+                    TextButton(
+                        onClick = onNavigateToRegister,
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(top = 8.dp)
+                    ) {
+                        Text(
+                            text = stringResource(R.string.login_no_account),
+                            style = MaterialTheme.typography.bodyMedium,
+                            color = BrandPrimary
+                        )
+                    }
+                }
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/auth/RegisterScreen.kt

@@ -0,0 +1,580 @@
+package ru.lastochka.messenger.ui.screens.auth
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.focus.FocusDirection
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.TextRange
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.R
+import ru.lastochka.messenger.ui.theme.BrandPrimary
+import ru.lastochka.messenger.util.formatPhoneNumberWithCursor
+import ru.lastochka.messenger.util.isValidEmail
+import ru.lastochka.messenger.util.isValidPhoneNumber
+import ru.lastochka.messenger.util.cleanPhoneNumber
+import ru.lastochka.messenger.viewmodel.AuthViewModel
+import ru.lastochka.messenger.viewmodel.AuthUiState
+
+/**
+ * Экран регистрации (как в lastochka-ui RegisterForm).
+ * Поля: Логин, Email, Телефон, Ваше имя (опционально), Пароль, Подтверждение пароля
+ */
+@OptIn(androidx.compose.material3.ExperimentalMaterial3Api::class)
+@Composable
+fun RegisterScreen(
+    onRegisterSuccess: () -> Unit,
+    onNavigateToLogin: () -> Unit,
+    viewModel: AuthViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val scope = rememberCoroutineScope()
+
+    // Данные регистрации
+    var login by remember { mutableStateOf("") }
+    var email by remember { mutableStateOf("") }
+    var phone by remember { mutableStateOf(TextFieldValue("")) }
+    var displayName by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+    var passwordConfirm by remember { mutableStateOf("") }
+
+    // Ошибки валидации
+    var loginError by remember { mutableStateOf("") }
+    var emailError by remember { mutableStateOf("") }
+    var phoneError by remember { mutableStateOf("") }
+    var passwordError by remember { mutableStateOf("") }
+
+    // Статусы проверки доступности
+    var isCheckingLogin by remember { mutableStateOf(false) }
+    var loginAvailable by remember { mutableStateOf<Boolean?>(null) }
+
+    var isCheckingEmail by remember { mutableStateOf(false) }
+    var emailAvailable by remember { mutableStateOf<Boolean?>(null) }
+
+    var isCheckingPhone by remember { mutableStateOf(false) }
+    var phoneAvailable by remember { mutableStateOf<Boolean?>(null) }
+
+    // Видимость паролей
+    var passwordVisible by remember { mutableStateOf(false) }
+    var passwordConfirmVisible by remember { mutableStateOf(false) }
+
+    val focusManager = LocalFocusManager.current
+
+    // Debounced проверка логина
+    LaunchedEffect(login) {
+        if (login.length >= 3) {
+            delay(500)
+            isCheckingLogin = true
+            viewModel.checkUsername(login) { available ->
+                loginAvailable = available
+                if (available) loginError = ""
+                else loginError = "Этот логин уже занят"
+                isCheckingLogin = false
+            }
+        } else {
+            loginAvailable = null
+        }
+    }
+
+    // Debounced проверка email
+    LaunchedEffect(email) {
+        val trimmed = email.trim()
+        if (isValidEmail(trimmed)) {
+            delay(500)
+            isCheckingEmail = true
+            viewModel.checkEmailAvailability(trimmed) { available ->
+                emailAvailable = available
+                if (available) emailError = ""
+                else emailError = "Этот email уже зарегистрирован"
+                isCheckingEmail = false
+            }
+        } else {
+            emailAvailable = null
+        }
+    }
+
+    // Debounced проверка телефона
+    LaunchedEffect(phone.text) {
+        val cleaned = cleanPhoneNumber(phone.text)
+        if (cleaned.length == 11 || phone.text.length >= 18) {
+            delay(500)
+            isCheckingPhone = true
+            viewModel.checkPhoneAvailability(phone.text) { available ->
+                phoneAvailable = available
+                if (available) phoneError = ""
+                else phoneError = "Этот номер уже зарегистрирован"
+                isCheckingPhone = false
+            }
+        } else {
+            phoneAvailable = null
+        }
+    }
+
+    LaunchedEffect(uiState) {
+        if (uiState is AuthUiState.Success) {
+            onRegisterSuccess()
+        }
+    }
+
+    // Валидация формы
+    fun validateForm(): Boolean {
+        var isValid = true
+
+        if (login.length < 3) {
+            loginError = "Логин должен быть не менее 3 символов"
+            isValid = false
+        } else if (!login.matches(Regex("^[a-zA-Z0-9_]+$"))) {
+            loginError = "Логин может содержать только буквы, цифры и подчёркивание"
+            isValid = false
+        } else if (loginAvailable == false) {
+            loginError = "Этот логин уже занят"
+            isValid = false
+        }
+
+        if (!isValidEmail(email)) {
+            emailError = "Введите корректный email"
+            isValid = false
+        } else if (emailAvailable == false) {
+            emailError = "Этот email уже зарегистрирован"
+            isValid = false
+        }
+
+        if (!isValidPhoneNumber(phone.text)) {
+            phoneError = "Введите корректный номер телефона"
+            isValid = false
+        } else if (phoneAvailable == false) {
+            phoneError = "Этот номер уже зарегистрирован"
+            isValid = false
+        }
+
+        if (password.length < 6) {
+            passwordError = "Пароль должен быть не менее 6 символов"
+            isValid = false
+        } else if (password != passwordConfirm) {
+            passwordError = "Пароли не совпадают"
+            isValid = false
+        }
+
+        return isValid
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text(stringResource(R.string.register_title)) },
+                navigationIcon = {
+                    IconButton(onClick = onNavigateToLogin) {
+                        Icon(Icons.Default.ArrowBack, "Назад")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+                .padding(24.dp)
+                .verticalScroll(rememberScrollState())
+        ) {
+            // Логин
+            OutlinedTextField(
+                value = login,
+                onValueChange = {
+                    login = it.lowercase().filter { c -> c.isLetterOrDigit() || c == '_' }
+                    loginError = ""
+                },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_username)} *",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.typography.bodyMedium.color
+                    )
+                },
+                placeholder = { Text("username") },
+                leadingIcon = { Icon(Icons.Default.AccountCircle, null) },
+                trailingIcon = {
+                    if (login.length >= 3) {
+                        if (isCheckingLogin) {
+                            CircularProgressIndicator(
+                                modifier = Modifier.size(16.dp),
+                                strokeWidth = 2.dp
+                            )
+                        } else if (loginAvailable == true) {
+                            Icon(
+                                Icons.Default.CheckCircle,
+                                contentDescription = null,
+                                tint = Color(0xFF4CAF50)
+                            )
+                        }
+                    }
+                },
+                singleLine = true,
+                isError = loginError.isNotEmpty(),
+                supportingText = {
+                    when {
+                        loginError.isNotEmpty() -> Text(loginError, color = MaterialTheme.colorScheme.error)
+                        login.length >= 3 && loginAvailable == true ->
+                            Text(stringResource(R.string.register_username_available), color = Color(0xFF4CAF50))
+                    }
+                },
+                keyboardOptions = KeyboardOptions(imeAction = ImeAction.Next),
+                keyboardActions = KeyboardActions(
+                    onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Email
+            OutlinedTextField(
+                value = email,
+                onValueChange = {
+                    email = it
+                    emailError = ""
+                    emailAvailable = null
+                },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_email)} *",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                },
+                placeholder = { Text("example@mail.ru") },
+                leadingIcon = { Icon(Icons.Default.Email, null) },
+                trailingIcon = {
+                    if (isValidEmail(email.trim())) {
+                        if (isCheckingEmail) {
+                            CircularProgressIndicator(
+                                modifier = Modifier.size(16.dp),
+                                strokeWidth = 2.dp
+                            )
+                        } else if (emailAvailable == true) {
+                            Icon(
+                                Icons.Default.CheckCircle,
+                                contentDescription = null,
+                                tint = Color(0xFF4CAF50)
+                            )
+                        }
+                    }
+                },
+                singleLine = true,
+                isError = emailError.isNotEmpty(),
+                supportingText = {
+                    when {
+                        emailError.isNotEmpty() -> Text(emailError, color = MaterialTheme.colorScheme.error)
+                        isValidEmail(email.trim()) && emailAvailable == true ->
+                            Text(stringResource(R.string.register_email_available), color = Color(0xFF4CAF50))
+                    }
+                },
+                keyboardOptions = KeyboardOptions(
+                    keyboardType = KeyboardType.Email,
+                    imeAction = ImeAction.Next
+                ),
+                keyboardActions = KeyboardActions(
+                    onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Телефон
+            OutlinedTextField(
+                value = phone,
+                onValueChange = { newValue ->
+                    val (formatted, newCursor) = formatPhoneNumberWithCursor(
+                        newValue.text,
+                        newValue.selection.start
+                    )
+                    phone = TextFieldValue(
+                        text = formatted,
+                        selection = TextRange(newCursor)
+                    )
+                    phoneError = ""
+                    phoneAvailable = null
+                },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_phone)} *",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                },
+                placeholder = { Text("+7 (999) 999-99-99") },
+                leadingIcon = { Icon(Icons.Default.Phone, null) },
+                trailingIcon = {
+                    if (isValidPhoneNumber(phone.text)) {
+                        if (isCheckingPhone) {
+                            CircularProgressIndicator(
+                                modifier = Modifier.size(16.dp),
+                                strokeWidth = 2.dp
+                            )
+                        } else if (phoneAvailable == true) {
+                            Icon(
+                                Icons.Default.CheckCircle,
+                                contentDescription = null,
+                                tint = Color(0xFF4CAF50)
+                            )
+                        }
+                    }
+                },
+                singleLine = true,
+                isError = phoneError.isNotEmpty(),
+                supportingText = {
+                    when {
+                        phoneError.isNotEmpty() -> Text(phoneError, color = MaterialTheme.colorScheme.error)
+                        isValidPhoneNumber(phone.text) && phoneAvailable == true ->
+                            Text(stringResource(R.string.register_phone_available), color = Color(0xFF4CAF50))
+                    }
+                },
+                keyboardOptions = KeyboardOptions(
+                    keyboardType = KeyboardType.Phone,
+                    imeAction = ImeAction.Next
+                ),
+                keyboardActions = KeyboardActions(
+                    onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Отображаемое имя (опционально)
+            OutlinedTextField(
+                value = displayName,
+                onValueChange = { displayName = it },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_name)} ${stringResource(R.string.register_name_optional)}",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                },
+                placeholder = { Text("Как к вам обращаться") },
+                leadingIcon = { Icon(Icons.Default.Person, null) },
+                singleLine = true,
+                keyboardOptions = KeyboardOptions(imeAction = ImeAction.Next),
+                keyboardActions = KeyboardActions(
+                    onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Spacer(modifier = Modifier.height(8.dp))
+
+            Text(
+                text = "Будет отображаться в списке контактов. Если не указать, будет использоваться логин.",
+                style = MaterialTheme.typography.labelSmall,
+                color = Color.Gray,
+                modifier = Modifier.padding(start = 16.dp)
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Пароль
+            OutlinedTextField(
+                value = password,
+                onValueChange = {
+                    password = it
+                    passwordError = ""
+                },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_password)} *",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                },
+                placeholder = { Text("Минимум 6 символов") },
+                leadingIcon = { Icon(Icons.Default.Lock, null) },
+                trailingIcon = {
+                    IconButton(onClick = { passwordVisible = !passwordVisible }) {
+                        Icon(
+                            imageVector = if (passwordVisible) Icons.Default.Visibility else Icons.Default.VisibilityOff,
+                            contentDescription = null
+                        )
+                    }
+                },
+                visualTransformation = if (passwordVisible)
+                    androidx.compose.ui.text.input.VisualTransformation.None
+                else
+                    PasswordVisualTransformation(),
+                singleLine = true,
+                isError = passwordError.isNotEmpty(),
+                supportingText = {
+                    if (passwordError.isNotEmpty()) {
+                        Text(passwordError, color = MaterialTheme.colorScheme.error)
+                    }
+                },
+                keyboardOptions = KeyboardOptions(
+                    keyboardType = KeyboardType.Password,
+                    imeAction = ImeAction.Next
+                ),
+                keyboardActions = KeyboardActions(
+                    onNext = { focusManager.moveFocus(FocusDirection.Down) }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Подтверждение пароля
+            OutlinedTextField(
+                value = passwordConfirm,
+                onValueChange = { passwordConfirm = it },
+                label = {
+                    Text(
+                        text = "${stringResource(R.string.register_password_confirm)} *",
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                },
+                placeholder = { Text("Повторите пароль") },
+                leadingIcon = { Icon(Icons.Default.Lock, null) },
+                trailingIcon = {
+                    IconButton(onClick = { passwordConfirmVisible = !passwordConfirmVisible }) {
+                        Icon(
+                            imageVector = if (passwordConfirmVisible) Icons.Default.Visibility else Icons.Default.VisibilityOff,
+                            contentDescription = null
+                        )
+                    }
+                },
+                visualTransformation = if (passwordConfirmVisible)
+                    androidx.compose.ui.text.input.VisualTransformation.None
+                else
+                    PasswordVisualTransformation(),
+                singleLine = true,
+                isError = passwordConfirm.isNotEmpty() && password != passwordConfirm,
+                supportingText = {
+                    when {
+                        passwordError.isNotEmpty() -> Text(passwordError, color = MaterialTheme.colorScheme.error)
+                        passwordConfirm.isNotEmpty() && password == passwordConfirm ->
+                            Text("Пароли совпадают", color = Color(0xFF4CAF50))
+                    }
+                },
+                keyboardOptions = KeyboardOptions(
+                    keyboardType = KeyboardType.Password,
+                    imeAction = ImeAction.Done
+                ),
+                keyboardActions = KeyboardActions(
+                    onDone = {
+                        focusManager.clearFocus()
+                        scope.launch {
+                            if (validateForm()) {
+                                viewModel.registerWithFullProfile(
+                                    username = login,
+                                    password = password,
+                                    displayName = displayName.trim().ifBlank { login },
+                                    email = email.trim(),
+                                    phone = cleanPhoneNumber(phone.text)
+                                )
+                            }
+                        }
+                    }
+                ),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            // Общая ошибка
+            if (uiState is AuthUiState.Error) {
+                Spacer(modifier = Modifier.height(16.dp))
+                Card(
+                    colors = CardDefaults.cardColors(
+                        containerColor = Color(0xFFFEE2E2).copy(alpha = if (isSystemInDarkTheme()) 0.2f else 1f)
+                    ),
+                    shape = RoundedCornerShape(12.dp)
+                ) {
+                    Text(
+                        text = (uiState as AuthUiState.Error).message,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = Color(0xFFDC2626),
+                        textAlign = TextAlign.Center,
+                        modifier = Modifier.padding(12.dp)
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            // Register button
+            Button(
+                onClick = {
+                    scope.launch {
+                        if (validateForm()) {
+                            viewModel.registerWithFullProfile(
+                                username = login,
+                                password = password,
+                                displayName = displayName.trim().ifBlank { login },
+                                email = email.trim(),
+                                phone = cleanPhoneNumber(phone.text)
+                            )
+                        }
+                    }
+                },
+                enabled = uiState !is AuthUiState.Loading &&
+                        !isCheckingLogin && !isCheckingEmail && !isCheckingPhone,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(48.dp),
+                shape = RoundedCornerShape(12.dp),
+                colors = ButtonDefaults.buttonColors(containerColor = BrandPrimary)
+            ) {
+                if (uiState is AuthUiState.Loading) {
+                    CircularProgressIndicator(modifier = Modifier.size(24.dp), color = Color.White)
+                } else {
+                    Text(
+                        text = stringResource(R.string.register_button),
+                        style = MaterialTheme.typography.titleMedium,
+                        color = Color.White,
+                        fontWeight = FontWeight.SemiBold
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(8.dp))
+
+            // Terms text
+            Text(
+                text = stringResource(R.string.register_terms),
+                style = MaterialTheme.typography.labelSmall,
+                color = Color.Gray,
+                textAlign = TextAlign.Center,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(bottom = 8.dp)
+            )
+
+            // Login link
+            TextButton(
+                onClick = onNavigateToLogin,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(
+                    text = stringResource(R.string.register_have_account),
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = BrandPrimary
+                )
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/calls/CallsScreen.kt

@@ -0,0 +1,48 @@
+package ru.lastochka.messenger.ui.screens.calls
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+
+/**
+ * Экран звонков (заглушка).
+ */
+@Composable
+fun CallsScreen() {
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.spacedBy(16.dp)
+        ) {
+            Icon(
+                imageVector = Icons.Default.Call,
+                contentDescription = null,
+                modifier = Modifier.size(80.dp),
+                tint = Color.Gray
+            )
+            Text(
+                text = "Звонки",
+                style = MaterialTheme.typography.headlineMedium,
+                fontWeight = FontWeight.Bold,
+                color = Color.Gray
+            )
+            Text(
+                text = "Эта функция появится в следующей версии",
+                style = MaterialTheme.typography.bodyLarge,
+                color = Color.Gray,
+                textAlign = TextAlign.Center,
+                modifier = Modifier.padding(horizontal = 32.dp)
+            )
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/chat/ChatScreen.kt

@@ -0,0 +1,713 @@
+package ru.lastochka.messenger.ui.screens.chat
+
+import android.content.Context
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.widget.Toast
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.PickVisualMediaRequest
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.animation.*
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.gestures.*
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.input.pointer.*
+import androidx.compose.ui.input.pointer.PointerInputScope
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.core.content.ContextCompat
+import androidx.core.content.FileProvider
+import androidx.hilt.navigation.compose.hiltViewModel
+import coil.compose.AsyncImage
+import coil.request.ImageRequest
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.UiMessage
+import ru.lastochka.messenger.ui.components.*
+import ru.lastochka.messenger.viewmodel.ChatViewModel
+import ru.lastochka.messenger.viewmodel.MessageActionType
+import java.io.File
+import java.util.*
+
+/**
+ * Экран чата.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ChatScreen(
+    topicName: String,
+    topicTitle: String,
+    onBack: () -> Unit,
+    onOpenContactInfo: () -> Unit,
+    viewModel: ChatViewModel = hiltViewModel()
+) {
+    val messages by viewModel.messages.collectAsState()
+    val topicTitle by viewModel.topicTitle.collectAsState()
+    val isTyping by viewModel.isTyping.collectAsState()
+    val isLoading by viewModel.isLoading.collectAsState()
+    val isSendingImage by viewModel.isSendingImage.collectAsState()
+    val imageUploadProgress by viewModel.imageUploadProgress.collectAsState()
+
+    // Action states
+    val selectedMessage by viewModel.selectedMessage.collectAsState()
+    val replyToMessage by viewModel.replyToMessage.collectAsState()
+    val editingMessage by viewModel.editingMessage.collectAsState()
+
+    var inputText by remember { mutableStateOf("") }
+    var selectedImageUri by remember { mutableStateOf<Uri?>(null) }
+    val listState = rememberLazyListState()
+    val scope = rememberCoroutineScope()
+    val context = LocalContext.current
+
+    // Fullscreen image viewer
+    var viewingImageUri by remember { mutableStateOf<String?>(null) }
+
+    // Launcher для выбора изображения из галереи
+    val pickMedia = rememberLauncherForActivityResult(ActivityResultContracts.PickVisualMedia()) { uri ->
+        if (uri != null) {
+            selectedImageUri = uri
+        }
+    }
+
+    // Launcher для камеры — сохраняет фото в cache-директорию
+    var cameraImageUri by remember { mutableStateOf<Uri?>(null) }
+    var cameraImageFile by remember { mutableStateOf<File?>(null) }
+    val takePhotoLauncher = rememberLauncherForActivityResult(ActivityResultContracts.TakePicture()) { success ->
+        if (success && cameraImageUri != null) {
+            selectedImageUri = cameraImageUri
+        }
+        cameraImageUri = null
+        cameraImageFile = null
+    }
+
+    // Launcher для запроса разрешения CAMERA
+    var pendingCameraAction by remember { mutableStateOf(false) }
+    val requestCameraPermission = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { isGranted ->
+        if (isGranted && pendingCameraAction) {
+            pendingCameraAction = false
+            doLaunchCamera(context, takePhotoLauncher) { uri, file ->
+                cameraImageUri = uri
+                cameraImageFile = file
+            }
+        } else if (!isGranted) {
+            Toast.makeText(
+                context,
+                "Разрешение на использование камеры отклонено. Выберите фото из галереи.",
+                Toast.LENGTH_LONG
+            ).show()
+        }
+    }
+
+    fun launchCamera() {
+        when {
+            ContextCompat.checkSelfPermission(context, android.Manifest.permission.CAMERA) ==
+                    PackageManager.PERMISSION_GRANTED -> {
+                doLaunchCamera(context, takePhotoLauncher) { uri, file ->
+                    cameraImageUri = uri
+                    cameraImageFile = file
+                }
+            }
+            else -> {
+                // Запрашиваем разрешение
+                pendingCameraAction = true
+                requestCameraPermission.launch(android.Manifest.permission.CAMERA)
+            }
+        }
+    }
+
+    // Debounce для typing indicator — не чаще 1 раза в 500ms
+    var lastTypingTime by remember { mutableLongStateOf(0L) }
+
+    fun onTextChanged(newText: String) {
+        inputText = newText
+        val now = System.currentTimeMillis()
+        if (now - lastTypingTime > 500 && newText.isNotBlank()) {
+            viewModel.sendTyping()
+            lastTypingTime = now
+        }
+    }
+
+    // Автоскролл
+    LaunchedEffect(messages.size) {
+        if (messages.isNotEmpty()) {
+            listState.animateScrollToItem(messages.size)
+        }
+    }
+
+    // Пагинация: загрузка при скролле к началу
+    LaunchedEffect(listState.firstVisibleItemIndex) {
+        if (listState.firstVisibleItemIndex == 0 && listState.firstVisibleItemScrollOffset < 50) {
+            viewModel.loadMoreMessages()
+        }
+    }
+
+    // Показывать FAB "Вниз", если проскроллили вверх
+    val showScrollToBottom by remember {
+        derivedStateOf {
+            listState.firstVisibleItemIndex > 0 || listState.firstVisibleItemScrollOffset > 100
+        }
+    }
+
+    LaunchedEffect(Unit) {
+        viewModel.markAllRead()
+    }
+
+    // BottomSheet для действий с сообщениями
+    val sheetState = rememberModalBottomSheetState()
+    var showSheet by remember { mutableStateOf(false) }
+
+    // BottomSheet для выбора источника медиа (галерея / камера)
+    var showMediaSourceSheet by remember { mutableStateOf(false) }
+
+    LaunchedEffect(selectedMessage) {
+        if (selectedMessage != null) {
+            showSheet = true
+        } else {
+            showSheet = false
+        }
+    }
+
+    val currentSelectedMessage = selectedMessage
+    if (showSheet && currentSelectedMessage != null) {
+        ModalBottomSheet(
+            onDismissRequest = {
+                showSheet = false
+                viewModel.dismissActionMenu()
+            },
+            sheetState = sheetState
+        ) {
+            Column(modifier = Modifier.padding(bottom = 24.dp)) {
+                SheetAction(Icons.Default.Reply, "Ответить") {
+                    viewModel.executeAction(MessageActionType.REPLY)
+                    showSheet = false
+                }
+                SheetAction(Icons.Default.ContentCopy, "Копировать") {
+                    viewModel.executeAction(MessageActionType.COPY)
+                    showSheet = false
+                }
+                if (currentSelectedMessage.isOwn) {
+                    SheetAction(Icons.Default.Edit, "Редактировать") {
+                        viewModel.executeAction(MessageActionType.EDIT)
+                        showSheet = false
+                    }
+                    SheetAction(Icons.Default.Delete, "Удалить", color = Color(0xFFEF5350)) {
+                        viewModel.executeAction(MessageActionType.DELETE)
+                        showSheet = false
+                    }
+                }
+            }
+        }
+    }
+
+    // Sheet выбора источника медиа
+    if (showMediaSourceSheet) {
+        ModalBottomSheet(
+            onDismissRequest = { showMediaSourceSheet = false },
+            sheetState = sheetState
+        ) {
+            Column(modifier = Modifier.padding(bottom = 24.dp)) {
+                SheetAction(Icons.Default.PhotoLibrary, "Галерея") {
+                    showMediaSourceSheet = false
+                    pickMedia.launch(PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageOnly))
+                }
+                SheetAction(Icons.Default.PhotoCamera, "Камера") {
+                    showMediaSourceSheet = false
+                    launchCamera()
+                }
+            }
+        }
+    }
+
+    Scaffold(
+        topBar = {
+            ChatHeader(
+                name = topicTitle,
+                statusText = if (isTyping) "печатает…" else "был(а) недавно",
+                isOnline = false,
+                onBack = onBack,
+                onCall = {},
+                onMore = {},
+                onClick = onOpenContactInfo
+            )
+        },
+        bottomBar = {
+            Column {
+                // Reply Preview
+                val currentReplyMsg = replyToMessage
+                AnimatedVisibility(visible = currentReplyMsg != null) {
+                    val msg = currentReplyMsg ?: return@AnimatedVisibility
+                    ReplyPreview(
+                        message = msg,
+                        onClose = { viewModel.clearReply() }
+                    )
+                }
+
+                // Image Preview
+                val currentImageUri = selectedImageUri
+                AnimatedVisibility(visible = currentImageUri != null) {
+                    val uri = currentImageUri ?: return@AnimatedVisibility
+                    ImagePreviewBar(
+                        imageUri = uri,
+                        onClear = { selectedImageUri = null },
+                        modifier = Modifier.padding(horizontal = 8.dp, vertical = 4.dp)
+                    )
+                }
+
+                MessageInput(
+                    text = inputText,
+                    onTextChanged = ::onTextChanged,
+                    onSend = {
+                        val uri = selectedImageUri
+                        if (uri != null) {
+                            val mimeType = context.contentResolver.getType(uri)
+                            val extension = mimeType?.substringAfter('/') ?: "jpg"
+                            val fileName = "image_${System.currentTimeMillis()}.$extension"
+                            viewModel.sendImageMessage(uri, mimeType ?: "image/jpeg", fileName, inputText)
+                            selectedImageUri = null
+                            inputText = ""
+                        } else if (inputText.isNotBlank()) {
+                            viewModel.sendMessage(inputText)
+                            inputText = ""
+                        }
+                    },
+                    onAttach = {
+                        showMediaSourceSheet = true
+                    },
+                    replyToMessage = replyToMessage
+                )
+            }
+        },
+        floatingActionButton = {
+            // FAB "Вниз"
+            AnimatedVisibility(visible = showScrollToBottom) {
+                FloatingActionButton(
+                    onClick = {
+                        scope.launch {
+                            listState.animateScrollToItem(messages.size)
+                        }
+                    },
+                    containerColor = MaterialTheme.colorScheme.secondaryContainer,
+                    contentColor = MaterialTheme.colorScheme.onSecondaryContainer,
+                    modifier = Modifier.padding(bottom = 16.dp)
+                ) {
+                    Icon(Icons.Default.KeyboardArrowDown, "Вниз")
+                }
+            }
+        }
+    ) { padding ->
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .background(Color(0xFFE5DDD5)) // Telegram-like background color
+                .padding(padding)
+        ) {
+            if (isLoading) {
+                CircularProgressIndicator(modifier = Modifier.align(Alignment.Center))
+            } else if (messages.isEmpty()) {
+                EmptyChatState()
+            } else {
+                ChatMessagesList(
+                    messages = messages,
+                    listState = listState,
+                    onLongClick = { msg -> viewModel.onMessageLongClick(msg) },
+                    onSwipeReply = { msg -> viewModel.replyToMessageExternally(msg) },
+                    onImageClick = { uri -> viewingImageUri = uri }
+                )
+            }
+
+            // Progress overlay при отправке изображения
+            if (isSendingImage) {
+                Surface(
+                    modifier = Modifier
+                        .align(Alignment.BottomCenter)
+                        .fillMaxWidth(),
+                    color = MaterialTheme.colorScheme.surface.copy(alpha = 0.95f),
+                    shadowElevation = 8.dp
+                ) {
+                    Column(
+                        modifier = Modifier.padding(16.dp),
+                        horizontalAlignment = Alignment.CenterHorizontally
+                    ) {
+                        LinearProgressIndicator(
+                            progress = imageUploadProgress,
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(4.dp),
+                            color = MaterialTheme.colorScheme.primary,
+                            trackColor = MaterialTheme.colorScheme.surfaceVariant
+                        )
+                        Spacer(modifier = Modifier.height(8.dp))
+                        Text(
+                            text = "Отправка изображения... ${(imageUploadProgress * 100).toInt()}%",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant
+                        )
+                    }
+                }
+            }
+        }
+
+        // Fullscreen image viewer
+        val viewingUri = viewingImageUri
+        if (viewingUri != null) {
+            FullscreenImageViewer(
+                imageUrl = viewingUri,
+                onDismiss = { viewingImageUri = null }
+            )
+        }
+    }
+}
+
+@Composable
+fun SheetAction(icon: androidx.compose.ui.graphics.vector.ImageVector, label: String, color: Color = LocalContentColor.current, onClick: () -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(icon, contentDescription = label, tint = color)
+        Spacer(modifier = Modifier.width(16.dp))
+        Text(label, color = color, fontWeight = FontWeight.Medium)
+    }
+}
+
+@Composable
+fun ReplyPreview(message: UiMessage, onClose: () -> Unit) {
+    Surface(
+        color = MaterialTheme.colorScheme.surfaceVariant,
+        modifier = Modifier.fillMaxWidth()
+    ) {
+        Row(
+            modifier = Modifier.padding(start = 16.dp, end = 8.dp, top = 8.dp, bottom = 8.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Box(
+                modifier = Modifier
+                    .width(4.dp)
+                    .height(32.dp)
+                    .background(MaterialTheme.colorScheme.primary, shape = MaterialTheme.shapes.small)
+            )
+            Spacer(modifier = Modifier.width(12.dp))
+            Column(modifier = Modifier.weight(1f)) {
+                Text("Ответ на сообщение", style = MaterialTheme.typography.labelSmall, color = MaterialTheme.colorScheme.primary)
+                Text(message.content, style = MaterialTheme.typography.bodyMedium, maxLines = 1, overflow = androidx.compose.ui.text.style.TextOverflow.Ellipsis)
+            }
+            IconButton(onClick = onClose) {
+                Icon(Icons.Default.Close, "Закрыть")
+            }
+        }
+    }
+}
+
+@Composable
+fun ChatMessagesList(
+    messages: List<UiMessage>,
+    listState: androidx.compose.foundation.lazy.LazyListState,
+    onLongClick: (UiMessage) -> Unit,
+    onSwipeReply: (UiMessage) -> Unit,
+    onImageClick: (String) -> Unit
+) {
+    val messagesWithDividers = remember(messages) {
+        buildList {
+            var lastDate: Date? = null
+            messages.forEach { msg ->
+                val msgDate = msg.timestamp.toDayStart()
+                if (msgDate != lastDate) {
+                    add(UiMessageWrapper.Divider(msgDate))
+                    lastDate = msgDate
+                }
+                add(UiMessageWrapper.Message(msg))
+            }
+        }
+    }
+
+    fun isLastInGroup(index: Int): Boolean {
+        val current = messagesWithDividers.getOrNull(index) as? UiMessageWrapper.Message ?: return true
+        val next = messagesWithDividers.getOrNull(index + 1)
+        return when (next) {
+            is UiMessageWrapper.Divider -> true
+            is UiMessageWrapper.Message -> next.message.isOwn != current.message.isOwn
+            null -> true
+        }
+    }
+
+    fun isFirstInGroup(index: Int): Boolean {
+        val current = messagesWithDividers.getOrNull(index) as? UiMessageWrapper.Message ?: return true
+        val prev = messagesWithDividers.getOrNull(index - 1)
+        return when (prev) {
+            is UiMessageWrapper.Divider -> true
+            is UiMessageWrapper.Message -> prev.message.isOwn != current.message.isOwn
+            null -> true
+        }
+    }
+
+    LazyColumn(
+        state = listState,
+        modifier = Modifier.fillMaxSize(),
+        contentPadding = PaddingValues(vertical = 8.dp)
+    ) {
+        itemsIndexed(
+            items = messagesWithDividers,
+            key = { index, item ->
+                when (item) {
+                    is UiMessageWrapper.Message -> "msg_${item.message.seqId}"
+                    is UiMessageWrapper.Divider -> "div_${item.date.time}"
+                }
+            }
+        ) { index, wrapper ->
+            when (wrapper) {
+                is UiMessageWrapper.Message -> {
+                    MessageBubble(
+                        message = wrapper.message,
+                        isFirstInGroup = isFirstInGroup(index),
+                        isLastInGroup = isLastInGroup(index),
+                        onLongClick = { onLongClick(wrapper.message) },
+                        onSwipeReply = { onSwipeReply(wrapper.message) },
+                        onImageClick = onImageClick
+                    )
+                }
+                is UiMessageWrapper.Divider -> {
+                    DateDivider(date = wrapper.date)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun EmptyChatState() {
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Text(text = "👋", fontSize = 48.sp, modifier = Modifier.padding(bottom = 16.dp))
+            Text(text = "Нет сообщений", style = MaterialTheme.typography.bodyLarge, color = MaterialTheme.colorScheme.onSurfaceVariant)
+            Text(text = "Начните диалог!", style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
+        }
+    }
+}
+
+// ─── Helpers ────────────────────────────────────────────────────
+
+private fun Date.toDayStart(): Date {
+    val cal = Calendar.getInstance()
+    cal.time = this
+    cal.set(Calendar.HOUR_OF_DAY, 0)
+    cal.set(Calendar.MINUTE, 0)
+    cal.set(Calendar.SECOND, 0)
+    cal.set(Calendar.MILLISECOND, 0)
+    return cal.time
+}
+
+sealed class UiMessageWrapper {
+    data class Message(val message: UiMessage) : UiMessageWrapper()
+    data class Divider(val date: Date) : UiMessageWrapper()
+}
+
+/**
+ * Превью выбранного изображения перед отправкой.
+ */
+@Composable
+fun ImagePreviewBar(
+    imageUri: Uri,
+    onClear: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Surface(
+        modifier = modifier.fillMaxWidth(),
+        shape = MaterialTheme.shapes.medium,
+        tonalElevation = 2.dp
+    ) {
+        Row(
+            modifier = Modifier.padding(8.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            // Thumbnail
+            AsyncImage(
+                model = imageUri,
+                contentDescription = "Выбранное изображение",
+                modifier = Modifier
+                    .size(48.dp)
+                    .clip(MaterialTheme.shapes.small),
+                contentScale = ContentScale.Crop
+            )
+
+            Spacer(modifier = Modifier.width(8.dp))
+
+            // File name hint
+            Text(
+                text = "Изображение",
+                style = MaterialTheme.typography.bodySmall,
+                modifier = Modifier.weight(1f)
+            )
+
+            // Clear button
+            IconButton(onClick = onClear) {
+                Icon(Icons.Default.Close, "Удалить", tint = MaterialTheme.colorScheme.error)
+            }
+        }
+    }
+}
+
+/**
+ * Полноэкранный просмотр изображения с pinch-to-zoom.
+ */
+@Composable
+fun FullscreenImageViewer(
+    imageUrl: String,
+    onDismiss: () -> Unit
+) {
+    val context = LocalContext.current
+    var scale by remember { mutableFloatStateOf(1f) }
+    var offsetX by remember { mutableFloatStateOf(0f) }
+    var offsetY by remember { mutableFloatStateOf(0f) }
+
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(Color.Black)
+            .clickable(onClick = onDismiss)
+    ) {
+        // Кнопка закрытия
+        IconButton(
+            onClick = onDismiss,
+            modifier = Modifier
+                .align(Alignment.TopEnd)
+                .padding(16.dp)
+                .background(Color.Black.copy(alpha = 0.5f), shape = MaterialTheme.shapes.small)
+        ) {
+            Icon(Icons.Default.Close, "Закрыть", tint = Color.White)
+        }
+
+        // Изображение с pinch-to-zoom
+        AsyncImage(
+            model = ImageRequest.Builder(context)
+                .data(imageUrl)
+                .crossfade(true)
+                .build(),
+            contentDescription = "Полноэкранный просмотр",
+            modifier = Modifier
+                .fillMaxSize()
+                .graphicsLayer {
+                    scaleX = scale
+                    scaleY = scale
+                    translationX = offsetX
+                    translationY = offsetY
+                }
+                .pointerInput(Unit) {
+                    detectPinchZoom { centroid, pan, zoom ->
+                        scale = (scale * zoom).coerceIn(1f, 5f)
+                        if (scale > 1f) {
+                            offsetX += pan.x
+                            offsetY += pan.y
+                        } else {
+                            offsetX = 0f
+                            offsetY = 0f
+                        }
+                    }
+                }
+                .pointerInput(Unit) {
+                    detectTapGestures(
+                        onDoubleTap = {
+                            if (scale > 1f) {
+                                scale = 1f
+                                offsetX = 0f
+                                offsetY = 0f
+                            } else {
+                                scale = 3f
+                            }
+                        }
+                    )
+                },
+            contentScale = ContentScale.Fit
+        )
+    }
+}
+
+/**
+ * Обнаружение pinch-to-zoom жестов.
+ */
+private suspend fun PointerInputScope.detectPinchZoom(
+    onGesture: (centroid: androidx.compose.ui.geometry.Offset, pan: androidx.compose.ui.geometry.Offset, zoom: Float) -> Unit
+) {
+    forEachGesture {
+        awaitPointerEventScope {
+            awaitFirstDown()
+        }
+        awaitPointerEventScope {
+            var zoom = 1f
+            var pan = androidx.compose.ui.geometry.Offset.Zero
+            var pastTouchSlop = false
+            val touchSlop = viewConfiguration.touchSlop
+            var lockedToPanZoom = false
+
+            do {
+                val event = awaitPointerEvent()
+                val canceled = event.changes.any { it.isConsumed }
+                if (!canceled) {
+                    val zoomChange = event.calculateZoom()
+                    val panChange = event.calculatePan()
+
+                    if (!pastTouchSlop) {
+                        zoom *= zoomChange
+                        pan += panChange
+                        val centroidSize = event.calculateCentroidSize(useCurrent = false)
+                        val zoomMotion = (1f - zoom) * centroidSize.toFloat()
+                        val panMotion = pan.getDistance()
+                        if (zoomMotion > touchSlop || panMotion > touchSlop) {
+                            pastTouchSlop = true
+                            lockedToPanZoom = true
+                        }
+                    }
+
+                    if (pastTouchSlop) {
+                        if (lockedToPanZoom) {
+                            onGesture(event.calculateCentroid(useCurrent = false), panChange, zoomChange)
+                            event.changes.forEach { change -> if (change.positionChanged()) change.consume() }
+                        }
+                    }
+                }
+            } while (!canceled && event.changes.any { it.pressed })
+        }
+    }
+}
+
+// ─── Camera helpers ─────────────────────────────────────────────
+
+private fun doLaunchCamera(
+    context: Context,
+    takePhotoLauncher: androidx.activity.result.ActivityResultLauncher<Uri>,
+    onFileReady: (Uri, File) -> Unit
+) {
+    val cacheDir = context.cacheDir
+    val photoFile = File.createTempFile("camera_", ".jpg", cacheDir)
+    val uri = FileProvider.getUriForFile(
+        context,
+        "${context.packageName}.fileprovider",
+        photoFile
+    )
+    onFileReady(uri, photoFile)
+    takePhotoLauncher.launch(uri)
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/chatlist/ChatListScreen.kt

@@ -0,0 +1,163 @@
+package ru.lastochka.messenger.ui.screens.chatlist
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import ru.lastochka.messenger.R
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.ui.components.ChatItem
+import ru.lastochka.messenger.viewmodel.ChatListViewModel
+
+/**
+ * Список чатов (как в lastochka-ui Sidebar).
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ChatListScreen(
+    onChatClick: (String, String) -> Unit,
+    onNewChat: () -> Unit,
+    onProfile: () -> Unit,
+    onLogout: () -> Unit,
+    viewModel: ChatListViewModel = hiltViewModel()
+) {
+    val contacts by viewModel.filteredContacts.collectAsState()
+    val searchQuery by viewModel.searchQuery.collectAsState()
+    val isLoading by viewModel.isLoading.collectAsState()
+    val error by viewModel.error.collectAsState()
+
+    // Handle session expired
+    LaunchedEffect(error) {
+        if (error == "SESSION_EXPIRED") {
+            viewModel.clearError()
+            onLogout()
+        }
+    }
+
+    Scaffold(
+        topBar = {
+            Column {
+                TopAppBar(
+                    title = { Text("Чаты") },
+                    actions = {
+                        IconButton(onClick = onProfile) {
+                            Icon(Icons.Default.Settings, "Настройки")
+                        }
+                    }
+                )
+                // Search Bar
+                OutlinedTextField(
+                    value = searchQuery,
+                    onValueChange = viewModel::onSearchQueryChanged,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp, vertical = 4.dp),
+                    placeholder = { Text("Поиск") },
+                    leadingIcon = { Icon(Icons.Default.Search, null) },
+                    trailingIcon = {
+                        if (searchQuery.isNotEmpty()) {
+                            IconButton(onClick = { viewModel.onSearchQueryChanged("") }) {
+                                Icon(Icons.Default.ClearAll, "Очистить")
+                            }
+                        }
+                    },
+                    singleLine = true,
+                    shape = RoundedCornerShape(12.dp),
+                    textStyle = MaterialTheme.typography.bodyMedium
+                )
+            }
+        },
+        floatingActionButton = {
+            FloatingActionButton(
+                onClick = onNewChat,
+                containerColor = MaterialTheme.colorScheme.primary
+            ) {
+                Icon(
+                    Icons.Default.Edit,
+                    contentDescription = stringResource(R.string.chat_new),
+                    tint = Color.White
+                )
+            }
+        }
+    ) { padding ->
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .background(MaterialTheme.colorScheme.background)
+                .padding(padding)
+        ) {
+            if (isLoading) {
+                CircularProgressIndicator(
+                    modifier = Modifier.align(Alignment.Center),
+                    color = MaterialTheme.colorScheme.primary
+                )
+            } else if (contacts.isEmpty()) {
+                // Пустое состояние
+                Column(
+                    modifier = Modifier.align(Alignment.Center),
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Text(
+                        text = "💬",
+                        fontSize = 64.sp,
+                        modifier = Modifier.padding(bottom = 16.dp)
+                    )
+                    Text(
+                        text = stringResource(R.string.chats_empty),
+                        style = MaterialTheme.typography.titleLarge,
+                        color = MaterialTheme.colorScheme.onSurface
+                    )
+                    Text(
+                        text = stringResource(R.string.chats_empty_hint),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.padding(top = 8.dp)
+                    )
+                }
+            } else {
+                LazyColumn(
+                    modifier = Modifier.fillMaxSize(),
+                    contentPadding = PaddingValues(vertical = 8.dp)
+                ) {
+                    items(
+                        items = contacts,
+                        key = { it.topicName }
+                    ) { contact ->
+                        ChatItem(
+                            contact = contact,
+                            onClick = { onChatClick(contact.topicName, contact.displayName) }
+                        )
+                    }
+                }
+            }
+
+            // Error snackbar
+            if (error != null) {
+                Snackbar(
+                    modifier = Modifier
+                        .align(Alignment.BottomCenter)
+                        .padding(16.dp),
+                    containerColor = MaterialTheme.colorScheme.error,
+                    contentColor = Color.White
+                ) {
+                    Text(error!!)
+                }
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/contact/ContactInfoScreen.kt

@@ -0,0 +1,166 @@
+package ru.lastochka.messenger.ui.screens.contact
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import ru.lastochka.messenger.viewmodel.ContactInfoViewModel
+
+/**
+ * Экран информации о контакте/чате.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ContactInfoScreen(
+    topicName: String,
+    topicTitle: String,
+    onBack: () -> Unit,
+    onNavigateToChat: () -> Unit,
+    viewModel: ContactInfoViewModel = hiltViewModel()
+) {
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Информация") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(Icons.Default.ArrowBack, "Назад")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+                .verticalScroll(rememberScrollState()),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Spacer(modifier = Modifier.height(24.dp))
+
+            // Большой аватар
+            Surface(
+                modifier = Modifier.size(120.dp),
+                shape = CircleShape,
+                color = MaterialTheme.colorScheme.primaryContainer
+            ) {
+                Box(contentAlignment = Alignment.Center) {
+                    Text(
+                        text = topicTitle.take(1).uppercase(),
+                        style = MaterialTheme.typography.displayMedium,
+                        color = MaterialTheme.colorScheme.onPrimaryContainer
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Text(
+                text = topicTitle,
+                style = MaterialTheme.typography.headlineMedium,
+                fontWeight = FontWeight.Bold
+            )
+
+            Text(
+                text = "был(а) недавно",
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+
+            Spacer(modifier = Modifier.height(32.dp))
+
+            // Секция: Действия
+            Card(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp),
+                colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface)
+            ) {
+                Column {
+                    ActionItem(Icons.Default.Chat, "Написать") {
+                        onNavigateToChat()
+                    }
+                    Divider()
+                    ActionItem(Icons.Default.Call, "Позвонить", enabled = false)
+                    Divider()
+                    ActionItem(Icons.Default.VideoCall, "Видеозвонок", enabled = false)
+                }
+            }
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Секция: Медиа (заглушка)
+            Card(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp),
+                colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface)
+            ) {
+                Column(modifier = Modifier.padding(16.dp)) {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text("Медиа, ссылки и файлы", style = MaterialTheme.typography.titleMedium)
+                        Icon(Icons.Default.ChevronRight, null, tint = MaterialTheme.colorScheme.onSurfaceVariant)
+                    }
+                    Spacer(modifier = Modifier.height(12.dp))
+                    // Placeholder grid
+                    Row(horizontalArrangement = Arrangement.spacedBy(4.dp)) {
+                        repeat(3) {
+                            Box(
+                                modifier = Modifier
+                                    .weight(1f)
+                                    .aspectRatio(1f)
+                                    .background(Color.Gray.copy(alpha = 0.2f), shape = MaterialTheme.shapes.small)
+                            )
+                        }
+                    }
+                }
+            }
+
+            Spacer(modifier = Modifier.height(32.dp))
+
+            // Кнопка "Удалить чат"
+            TextButton(
+                onClick = { /* TODO */ },
+                colors = ButtonDefaults.textButtonColors(contentColor = Color(0xFFEF5350))
+            ) {
+                Icon(Icons.Default.Delete, null, modifier = Modifier.size(20.dp))
+                Spacer(modifier = Modifier.width(8.dp))
+                Text("Удалить чат", fontWeight = FontWeight.Bold)
+            }
+
+            Spacer(modifier = Modifier.height(32.dp))
+        }
+    }
+}
+
+@Composable
+fun ActionItem(icon: androidx.compose.ui.graphics.vector.ImageVector, label: String, enabled: Boolean = true, onClick: (() -> Unit)? = null) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(enabled = enabled && onClick != null, onClick = onClick ?: {})
+            .padding(16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(icon, contentDescription = label, tint = if (enabled) MaterialTheme.colorScheme.primary else Color.Gray)
+        Spacer(modifier = Modifier.width(16.dp))
+        Text(label, color = if (enabled) MaterialTheme.colorScheme.onSurface else Color.Gray)
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/groups/CreateGroupScreen.kt

@@ -0,0 +1,166 @@
+package ru.lastochka.messenger.ui.screens.groups
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.ui.components.AvatarSmall
+import ru.lastochka.messenger.viewmodel.CreateGroupViewModel
+
+/**
+ * Экран создания группы.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun CreateGroupScreen(
+    onGroupCreated: (String) -> Unit,
+    onBack: () -> Unit,
+    viewModel: CreateGroupViewModel = hiltViewModel()
+) {
+    val groupName by viewModel.groupName.collectAsState()
+    val description by viewModel.description.collectAsState()
+    val contacts by viewModel.contacts.collectAsState()
+    val selectedMembers by viewModel.selectedMembers.collectAsState()
+    val isLoading by viewModel.isLoading.collectAsState()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Новая группа") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(Icons.Default.ArrowBack, "Назад")
+                    }
+                },
+                actions = {
+                    TextButton(
+                        onClick = {
+                            viewModel.createGroup { topicName ->
+                                onGroupCreated(topicName)
+                            }
+                        },
+                        enabled = groupName.isNotBlank() && !isLoading
+                    ) {
+                        Text("Создать", fontWeight = FontWeight.Bold)
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+        ) {
+            // Group Name Input
+            OutlinedTextField(
+                value = groupName,
+                onValueChange = viewModel::updateGroupName,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(16.dp),
+                label = { Text("Название группы") },
+                placeholder = { Text("Введите название") },
+                leadingIcon = { Icon(Icons.Default.Group, null) },
+                singleLine = true,
+                keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Words)
+            )
+
+            // Description Input
+            OutlinedTextField(
+                value = description,
+                onValueChange = viewModel::updateDescription,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp),
+                label = { Text("Описание (необязательно)") },
+                placeholder = { Text("О чем эта группа?") },
+                leadingIcon = { Icon(Icons.Default.Info, null) },
+                minLines = 2,
+                keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences)
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Divider()
+
+            // Members Header
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(16.dp),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text("Участники", style = MaterialTheme.typography.titleMedium, fontWeight = FontWeight.Bold)
+                if (selectedMembers.isNotEmpty()) {
+                    Text("${selectedMembers.size} выбрано", style = MaterialTheme.typography.labelMedium, color = MaterialTheme.colorScheme.primary)
+                }
+            }
+
+            // Members List
+            LazyColumn(modifier = Modifier.fillMaxSize()) {
+                items(contacts, key = { it.topicName }) { contact ->
+                    MemberItem(
+                        contact = contact,
+                        isSelected = selectedMembers.contains(contact),
+                        onClick = { viewModel.toggleMember(contact) }
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun MemberItem(contact: ContactInfo, isSelected: Boolean, onClick: () -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp, vertical = 8.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        AvatarSmall(name = contact.displayName, avatarUrl = contact.avatar)
+        
+        Spacer(modifier = Modifier.width(16.dp))
+        
+        Text(
+            text = contact.displayName,
+            style = MaterialTheme.typography.bodyLarge,
+            modifier = Modifier.weight(1f),
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis
+        )
+
+        if (isSelected) {
+            Icon(
+                imageVector = Icons.Default.CheckCircle,
+                contentDescription = "Selected",
+                tint = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.size(24.dp)
+            )
+        } else {
+            Icon(
+                imageVector = Icons.Default.RadioButtonUnchecked,
+                contentDescription = "Unselected",
+                tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                modifier = Modifier.size(24.dp)
+            )
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/newchat/NewChatScreen.kt

@@ -0,0 +1,256 @@
+package ru.lastochka.messenger.ui.screens.newchat
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.R
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.ui.components.AvatarSmall
+import ru.lastochka.messenger.viewmodel.NewChatViewModel
+
+/**
+ * Экран поиска пользователей и создания групп.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun NewChatScreen(
+    onChatSelected: (ContactInfo) -> Unit,
+    onCreateGroup: () -> Unit,
+    onCreateChannel: () -> Unit,
+    onBack: () -> Unit,
+    viewModel: NewChatViewModel = hiltViewModel()
+) {
+    val searchResults by viewModel.searchResults.collectAsState()
+    val isLoading by viewModel.isLoading.collectAsState()
+    val scope = rememberCoroutineScope()
+    val focusManager = LocalFocusManager.current
+    
+    var query by remember { mutableStateOf("") }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Новый чат") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(Icons.Default.ArrowBack, "Назад")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+        ) {
+            // Actions Row
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(16.dp),
+                horizontalArrangement = Arrangement.spacedBy(12.dp)
+            ) {
+                Button(
+                    onClick = onCreateGroup,
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Icon(Icons.Default.Group, null, modifier = Modifier.size(18.dp))
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Text("Группа")
+                }
+                Button(
+                    onClick = onCreateChannel,
+                    modifier = Modifier.weight(1f)
+                ) {
+                    Icon(Icons.Default.VolumeUp, null, modifier = Modifier.size(18.dp))
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Text("Канал")
+                }
+            }
+
+            // Search Header
+            Text(
+                text = "Искать пользователей",
+                style = MaterialTheme.typography.labelLarge,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp)
+            )
+
+            // Поле поиска
+            OutlinedTextField(
+                value = query,
+                onValueChange = {
+                    query = it
+                    viewModel.search(it)
+                },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp),
+                label = { Text("Поиск по имени или логину") },
+                leadingIcon = { Icon(Icons.Default.Search, null) },
+                trailingIcon = {
+                    if (query.isNotEmpty()) {
+                        IconButton(onClick = {
+                            query = ""
+                            viewModel.clearResults()
+                        }) {
+                            Icon(Icons.Default.Clear, "Очистить")
+                        }
+                    }
+                },
+                singleLine = true,
+                keyboardOptions = KeyboardOptions(
+                    keyboardType = KeyboardType.Text,
+                    imeAction = ImeAction.Search
+                ),
+                keyboardActions = KeyboardActions(
+                    onSearch = { focusManager.clearFocus() }
+                ),
+                shape = RoundedCornerShape(12.dp)
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Результаты поиска
+            if (isLoading) {
+                Box(
+                    modifier = Modifier.fillMaxSize(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    CircularProgressIndicator()
+                }
+            } else if (searchResults.isEmpty() && query.length >= 2) {
+                Box(
+                    modifier = Modifier.fillMaxSize(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Icon(
+                            Icons.Default.PersonSearch,
+                            contentDescription = null,
+                            modifier = Modifier.size(64.dp),
+                            tint = Color.Gray
+                        )
+                        Spacer(modifier = Modifier.height(16.dp))
+                        Text(
+                            text = "Ничего не найдено",
+                            style = MaterialTheme.typography.bodyLarge,
+                            color = Color.Gray
+                        )
+                    }
+                }
+            } else if (searchResults.isEmpty()) {
+                Box(
+                    modifier = Modifier.fillMaxSize(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Icon(
+                            Icons.Default.Search,
+                            contentDescription = null,
+                            modifier = Modifier.size(64.dp),
+                            tint = Color.Gray
+                        )
+                        Spacer(modifier = Modifier.height(16.dp))
+                        Text(
+                            text = "Введите имя для поиска",
+                            style = MaterialTheme.typography.bodyLarge,
+                            color = Color.Gray
+                        )
+                    }
+                }
+            } else {
+                LazyColumn(
+                    modifier = Modifier.fillMaxSize(),
+                    contentPadding = PaddingValues(vertical = 8.dp)
+                ) {
+                    items(
+                        items = searchResults,
+                        key = { it.topicName }
+                    ) { contact ->
+                        SearchUserItem(
+                            contact = contact,
+                            onClick = {
+                                scope.launch {
+                                    val result = viewModel.startChat(contact.topicName)
+                                    if (result.isSuccess) {
+                                        onChatSelected(contact)
+                                    }
+                                }
+                            }
+                        )
+                    }
+                }
+            }
+        }
+    }
+}
+
+/**
+ * Элемент результата поиска.
+ */
+@Composable
+fun SearchUserItem(
+    contact: ContactInfo,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 4.dp)
+            .clickable(onClick = onClick),
+        shape = RoundedCornerShape(12.dp),
+        colors = CardDefaults.cardColors(
+            containerColor = MaterialTheme.colorScheme.surface
+        )
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(12.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            AvatarSmall(
+                name = contact.displayName,
+                avatarUrl = contact.avatar
+            )
+
+            Spacer(modifier = Modifier.width(12.dp))
+
+            Column(modifier = Modifier.fillMaxWidth()) {
+                Text(
+                    text = contact.displayName,
+                    style = MaterialTheme.typography.titleMedium,
+                    maxLines = 1,
+                    overflow = TextOverflow.Ellipsis
+                )
+                Text(
+                    text = "Нажмите чтобы начать чат",
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    maxLines = 1
+                )
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/settings/ProfileScreen.kt

@@ -0,0 +1,125 @@
+package ru.lastochka.messenger.ui.screens.settings
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.viewmodel.ProfileViewModel
+
+/**
+ * Экран редактирования профиля.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ProfileScreen(
+    onNavigateBack: () -> Unit,
+    viewModel: ProfileViewModel = hiltViewModel()
+) {
+    val name by viewModel.name.collectAsState()
+    val bio by viewModel.bio.collectAsState()
+    val isLoading by viewModel.isLoading.collectAsState()
+    val scope = rememberCoroutineScope()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Профиль") },
+                navigationIcon = {
+                    IconButton(onClick = onNavigateBack) {
+                        Icon(Icons.Default.ArrowBack, "Назад")
+                    }
+                },
+                actions = {
+                    IconButton(
+                        onClick = {
+                            scope.launch {
+                                viewModel.saveProfile()
+                                onNavigateBack()
+                            }
+                        },
+                        enabled = !isLoading
+                    ) {
+                        if (isLoading) {
+                            CircularProgressIndicator(modifier = Modifier.size(24.dp))
+                        } else {
+                            Icon(Icons.Default.Check, "Сохранить")
+                        }
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+                .verticalScroll(rememberScrollState())
+                .padding(16.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            // Аватар
+            Surface(
+                modifier = Modifier.size(100.dp),
+                shape = CircleShape,
+                color = MaterialTheme.colorScheme.primaryContainer
+            ) {
+                Box(contentAlignment = Alignment.Center) {
+                    Text(
+                        text = name.take(1).uppercase(),
+                        style = MaterialTheme.typography.displaySmall,
+                        color = MaterialTheme.colorScheme.onPrimaryContainer
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            // Имя
+            OutlinedTextField(
+                value = name,
+                onValueChange = viewModel::updateName,
+                label = { Text("Имя") },
+                placeholder = { Text("Ваше имя") },
+                leadingIcon = { Icon(Icons.Default.Person, null) },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth(),
+                keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Words)
+            )
+
+            Spacer(modifier = Modifier.height(16.dp))
+
+            // Био
+            OutlinedTextField(
+                value = bio,
+                onValueChange = viewModel::updateBio,
+                label = { Text("О себе") },
+                placeholder = { Text("Расскажите о себе") },
+                leadingIcon = { Icon(Icons.Default.Info, null) },
+                modifier = Modifier.fillMaxWidth(),
+                minLines = 3,
+                keyboardOptions = KeyboardOptions(capitalization = KeyboardCapitalization.Sentences)
+            )
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            Text(
+                text = "Ваш профиль виден другим пользователям",
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = TextAlign.Center
+            )
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/screens/settings/SettingsScreen.kt

@@ -0,0 +1,213 @@
+package ru.lastochka.messenger.ui.screens.settings
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.*
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+
+/**
+ * Экран настроек.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsScreen(
+    onNavigateToProfile: () -> Unit,
+    onLogout: () -> Unit
+) {
+    var showLogoutDialog by remember { mutableStateOf(false) }
+
+    if (showLogoutDialog) {
+        AlertDialog(
+            onDismissRequest = { showLogoutDialog = false },
+            title = { Text("Выход") },
+            text = { Text("Вы действительно хотите выйти из аккаунта?") },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        showLogoutDialog = false
+                        // onLogout → MainActivity → sessionRepository.logout() → authState → Unauthenticated
+                        onLogout()
+                    }
+                ) {
+                    Text("Выйти", color = Color(0xFFEF5350), fontWeight = FontWeight.Bold)
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showLogoutDialog = false }) {
+                    Text("Отмена")
+                }
+            }
+        )
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("Настройки") }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+        ) {
+            LazyColumn {
+                // Профиль
+                item {
+                    SettingsSectionHeader("Профиль")
+                }
+                item {
+                    SettingsItem(
+                        icon = Icons.Default.Person,
+                        title = "Изменить профиль",
+                        subtitle = "Имя, фото, био",
+                        onClick = onNavigateToProfile
+                    )
+                }
+
+                // Уведомления
+                item {
+                    SettingsSectionHeader("Уведомления")
+                }
+                item {
+                    var notificationsEnabled by remember { mutableStateOf(true) }
+                    SettingsItem(
+                        icon = Icons.Default.Notifications,
+                        title = "Уведомления",
+                        subtitle = "Звук и вибрация",
+                        trailing = {
+                            Switch(
+                                checked = notificationsEnabled,
+                                onCheckedChange = { notificationsEnabled = it }
+                            )
+                        },
+                        onClick = { notificationsEnabled = !notificationsEnabled }
+                    )
+                }
+
+                // Внешний вид
+                item {
+                    SettingsSectionHeader("Внешний вид")
+                }
+                item {
+                    var isDarkTheme by remember { mutableStateOf(false) }
+                    SettingsItem(
+                        icon = Icons.Default.DarkMode,
+                        title = "Тёмная тема",
+                        trailing = {
+                            Switch(
+                                checked = isDarkTheme,
+                                onCheckedChange = { isDarkTheme = it }
+                            )
+                        },
+                        onClick = { isDarkTheme = !isDarkTheme }
+                    )
+                }
+
+                // О приложении
+                item {
+                    SettingsSectionHeader("О приложении")
+                }
+                item {
+                    SettingsItem(
+                        icon = Icons.Default.Info,
+                        title = "Версия",
+                        subtitle = "1.0.0 (Alpha)"
+                    )
+                }
+                item {
+                    SettingsItem(
+                        icon = Icons.Default.Code,
+                        title = "Лицензия",
+                        subtitle = "GPL v3"
+                    )
+                }
+
+                // Выход
+                item {
+                    Spacer(modifier = Modifier.height(16.dp))
+                }
+                item {
+                    Button(
+                        onClick = { showLogoutDialog = true },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(horizontal = 16.dp)
+                            .height(48.dp),
+                        colors = ButtonDefaults.buttonColors(
+                            containerColor = Color(0xFFEF5350)
+                        )
+                    ) {
+                        Icon(Icons.Default.Logout, contentDescription = null, modifier = Modifier.size(20.dp))
+                        Spacer(modifier = Modifier.width(8.dp))
+                        Text("Выйти", fontWeight = FontWeight.Bold)
+                    }
+                    Spacer(modifier = Modifier.height(32.dp))
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun SettingsSectionHeader(title: String) {
+    Text(
+        text = title,
+        style = MaterialTheme.typography.labelLarge,
+        color = MaterialTheme.colorScheme.primary,
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 8.dp)
+    )
+}
+
+@Composable
+fun SettingsItem(
+    icon: ImageVector,
+    title: String,
+    subtitle: String? = null,
+    trailing: @Composable (() -> Unit)? = null,
+    onClick: (() -> Unit)? = null
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(enabled = onClick != null, onClick = onClick ?: {})
+            .padding(horizontal = 16.dp, vertical = 12.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            imageVector = icon,
+            contentDescription = null,
+            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.size(24.dp)
+        )
+        Spacer(modifier = Modifier.width(16.dp))
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = title,
+                style = MaterialTheme.typography.bodyLarge,
+                color = MaterialTheme.colorScheme.onSurface
+            )
+            if (subtitle != null) {
+                Text(
+                    text = subtitle,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            }
+        }
+        trailing?.invoke()
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/theme/Color.kt

@@ -0,0 +1,54 @@
+package ru.lastochka.messenger.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+// ─── Brand colors (from lastochka-ui) ────────────────────────────
+val BrandPrimary = Color(0xFF5B5EF4)    // индиго
+val BrandPrimaryDark = Color(0xFF4338CA)
+val BrandSecondary = Color(0xFF7B61FF)  // фиолетовый
+val BrandSecondaryDark = Color(0xFF5C45D6)
+val BrandAccent = Color(0xFFFFD93D)     // солнечный
+
+// ─── Light theme colors ─────────────────────────────────────────
+val Background = Color(0xFFEFEFF3)
+val Surface = Color(0xFFFFFFFF)
+val SurfaceVariant = Color(0xFFF5F5F5)
+val OnSurface = Color(0xFF1A1A1A)
+val OnSurfaceVariant = Color(0xFF666666)
+val Outline = Color(0xFFE0E0E0)
+
+// ─── Message bubbles (light) ────────────────────────────────────
+val BubbleOwn = Color(0xFFEEF2FF)       // индиго-светлый (свои)
+val BubblePeer = Color(0xFFFFFFFF)      // белый (чужие)
+val BubbleOwnText = Color(0xFF1A1A1A)
+val BubblePeerText = Color(0xFF1A1A1A)
+
+// ─── Dark theme colors ──────────────────────────────────────────
+val BackgroundDark = Color(0xFF0E1621)
+val SurfaceDark = Color(0xFF17212B)
+val SurfaceVariantDark = Color(0xFF1E2C3A)
+val OnSurfaceDark = Color(0xFFF5F5F5)
+val OnSurfaceVariantDark = Color(0xFF9E9E9E)
+val OutlineDark = Color(0xFF2B3A4A)
+
+// ─── Message bubbles (dark) ─────────────────────────────────────
+val BubbleOwnDark = Color(0xFF2B5278)
+val BubblePeerDark = Color(0xFF182533)
+val BubbleOwnTextDark = Color(0xFFE8E8E8)
+val BubblePeerTextDark = Color(0xFFE8E8E8)
+
+// ─── Status colors ──────────────────────────────────────────────
+val Online = Color(0xFF40C040)
+val ReadReceipt = BrandPrimary
+val SentReceipt = Color(0xFF9E9E9E)
+val SelectionOverlay = Color(0x2F3F51B5)
+
+// ─── Avatar palette ─────────────────────────────────────────────
+val AvatarColors = listOf(
+    Color(0xFF5B5EF4), Color(0xFF7B61FF), Color(0xFF2E86DE),
+    Color(0xFF3BAFFF), Color(0xFF4CAF50), Color(0xFFFFD93D),
+    Color(0xFFFF6B6B), Color(0xFFFF9F43), Color(0xFFA29BFE),
+    Color(0xFFFD79A8), Color(0xFF00CEC9), Color(0xFFE17055),
+    Color(0xFF6C5CE7), Color(0xFF00B894), Color(0xFFFDCB6E),
+    Color(0xFFE84393)
+)

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/theme/Theme.kt

@@ -0,0 +1,91 @@
+package ru.lastochka.messenger.ui.theme
+
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.staticCompositionLocalOf
+import androidx.compose.ui.graphics.Color
+
+// ─── Lastochka ColorScheme ───────────────────────────────────────
+
+private val LightColorScheme = lightColorScheme(
+    primary = BrandPrimary,
+    onPrimary = Color.White,
+    primaryContainer = BubbleOwn,
+    onPrimaryContainer = BubbleOwnText,
+    secondary = BrandSecondary,
+    onSecondary = Color.White,
+    surface = Surface,
+    onSurface = OnSurface,
+    surfaceVariant = SurfaceVariant,
+    onSurfaceVariant = OnSurfaceVariant,
+    background = Background,
+    onBackground = OnSurface,
+    outline = Outline,
+    outlineVariant = Outline,
+    error = Color(0xFFB71C1C)
+)
+
+private val DarkColorScheme = darkColorScheme(
+    primary = BrandPrimary,
+    onPrimary = Color.White,
+    primaryContainer = BubbleOwnDark,
+    onPrimaryContainer = BubbleOwnTextDark,
+    secondary = BrandSecondary,
+    onSecondary = Color.White,
+    surface = SurfaceDark,
+    onSurface = OnSurfaceDark,
+    surfaceVariant = SurfaceVariantDark,
+    onSurfaceVariant = OnSurfaceVariantDark,
+    background = BackgroundDark,
+    onBackground = OnSurfaceDark,
+    outline = OutlineDark,
+    outlineVariant = OutlineDark,
+    error = Color(0xFFCF6679)
+)
+
+// ─── Bubble colors (локально для чата) ───────────────────────────
+
+data class BubbleColors(
+    val own: Color,
+    val ownText: Color,
+    val peer: Color,
+    val peerText: Color
+)
+
+private val LightBubbleColors = BubbleColors(
+    own = BubbleOwn,
+    ownText = BubbleOwnText,
+    peer = BubblePeer,
+    peerText = BubblePeerText
+)
+
+private val DarkBubbleColors = BubbleColors(
+    own = BubbleOwnDark,
+    ownText = BubbleOwnTextDark,
+    peer = BubblePeerDark,
+    peerText = BubblePeerTextDark
+)
+
+val LocalBubbleColors = staticCompositionLocalOf { LightBubbleColors }
+
+// ─── Theme ───────────────────────────────────────────────────────
+
+@Composable
+fun LastochkaTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    content: @Composable () -> Unit
+) {
+    val colorScheme = if (darkTheme) DarkColorScheme else LightColorScheme
+    val bubbleColors = if (darkTheme) DarkBubbleColors else LightBubbleColors
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography
+    ) {
+        CompositionLocalProvider(LocalBubbleColors provides bubbleColors) {
+            content()
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/ui/theme/Type.kt

@@ -0,0 +1,101 @@
+package ru.lastochka.messenger.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// ─── Типографика в стиле lastochka-ui ────────────────────────────
+
+val Typography = Typography(
+    // Заголовки
+    displayLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Bold,
+        fontSize = 32.sp,
+        lineHeight = 40.sp,
+        letterSpacing = 0.sp
+    ),
+    displayMedium = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Bold,
+        fontSize = 24.sp,
+        lineHeight = 32.sp,
+        letterSpacing = 0.sp
+    ),
+    displaySmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.SemiBold,
+        fontSize = 20.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    // Заголовок чата
+    headlineMedium = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.SemiBold,
+        fontSize = 18.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.sp
+    ),
+    headlineSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.SemiBold,
+        fontSize = 16.sp,
+        lineHeight = 22.sp,
+        letterSpacing = 0.sp
+    ),
+    // Имя в списке чатов
+    titleMedium = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 16.sp,
+        lineHeight = 22.sp,
+        letterSpacing = 0.15.sp
+    ),
+    titleSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 14.sp,
+        lineHeight = 20.sp,
+        letterSpacing = 0.1.sp
+    ),
+    // Текст сообщения
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 15.sp,
+        lineHeight = 22.sp,
+        letterSpacing = 0.15.sp
+    ),
+    bodyMedium = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 14.sp,
+        lineHeight = 20.sp,
+        letterSpacing = 0.25.sp
+    ),
+    bodySmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 12.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.4.sp
+    ),
+    // Мета-данные (время, статус)
+    labelMedium = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 12.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 11.sp,
+        lineHeight = 14.sp,
+        letterSpacing = 0.5.sp
+    )
+)

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/util/ImageCompressor.kt

@@ -0,0 +1,225 @@
+package ru.lastochka.messenger.util
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.util.Size
+import androidx.exifinterface.media.ExifInterface
+import java.io.ByteArrayOutputStream
+import java.io.File
+import java.io.FileOutputStream
+
+/**
+ * Утилита для сжатия изображений перед отправкой.
+ *
+ * Стратегия:
+ * - Максимальная сторона: 1920px (Full HD) — достаточно для просмотра на любом экране
+ * - Качество JPEG: 85% — хороший баланс качество/размер
+ * - Если изображение < 1MB — не сжимаем
+ * - Сохраняем ориентацию (EXIF)
+ */
+object ImageCompressor {
+
+    private const val MAX_SIDE = 1920
+    private const val JPEG_QUALITY = 85
+    private const val NO_COMPRESS_THRESHOLD = 1_000_000L // 1MB
+
+    /**
+     * Сжать изображение из Uri. Возвращает временный файл со сжатым JPEG.
+     */
+    fun compressImage(context: Context, uri: Uri): CompressedImage {
+        val inputStream = context.contentResolver.openInputStream(uri)
+            ?: throw IllegalArgumentException("Cannot open URI: $uri")
+
+        // Сначала читаем размеры без декодирования
+        val options = BitmapFactory.Options().apply { inJustDecodeBounds = true }
+        BitmapFactory.decodeStream(inputStream, null, options)
+        inputStream.close()
+
+        val originalWidth = options.outWidth
+        val originalHeight = options.outHeight
+        val originalSize = context.contentResolver.openInputStream(uri)?.use { it.available().toLong() } ?: 0L
+
+        // Если маленькое — не сжимаем
+        if (originalSize < NO_COMPRESS_THRESHOLD && originalSize > 0) {
+            return CompressedImage(
+                file = uriToFile(context, uri),
+                mimeType = context.contentResolver.getType(uri) ?: "image/jpeg",
+                originalSize = originalSize,
+                compressedSize = originalSize,
+                wasCompressed = false
+            )
+        }
+
+        // Вычисляем inSampleSize для декодирования
+        val targetSize = calculateTargetSize(originalWidth, originalHeight)
+        val inSampleSize = calculateInSampleSize(options, targetSize.width, targetSize.height)
+
+        // Декодируем с уменьшением
+        val decodeOptions = BitmapFactory.Options().apply {
+            this.inSampleSize = inSampleSize
+            this.inPreferredConfig = Bitmap.Config.RGB_565 // Экономим память
+        }
+
+        val decodeStream = context.contentResolver.openInputStream(uri)
+        val bitmap = BitmapFactory.decodeStream(decodeStream, null, decodeOptions)
+            ?: throw IllegalStateException("Failed to decode bitmap")
+        decodeStream?.close()
+
+        // Проверяем ориентацию (EXIF)
+        val orientation = getOrientation(context, uri)
+
+        // Поворачиваем если нужно
+        val rotatedBitmap = rotateBitmapIfNeeded(bitmap, orientation)
+        if (rotatedBitmap !== bitmap) {
+            bitmap.recycle()
+        }
+
+        // Если после downsampling всё ещё больше MAX_SIDE — дожимаем
+        val rotatedWidth = rotatedBitmap.width
+        val rotatedHeight = rotatedBitmap.height
+        val finalBitmap = if (rotatedWidth > MAX_SIDE || rotatedHeight > MAX_SIDE) {
+            val scale = MAX_SIDE.toFloat() / maxOf(rotatedWidth, rotatedHeight)
+            val scaledWidth = (rotatedWidth * scale).toInt()
+            val scaledHeight = (rotatedHeight * scale).toInt()
+            val scaled = Bitmap.createScaledBitmap(rotatedBitmap, scaledWidth, scaledHeight, true)
+            if (scaled !== rotatedBitmap) rotatedBitmap.recycle()
+            scaled
+        } else {
+            rotatedBitmap
+        }
+
+        // Сохраняем в JPEG
+        val compressedFile = File.createTempFile("compressed_", ".jpg", context.cacheDir)
+        val outputStream = FileOutputStream(compressedFile)
+        finalBitmap.compress(Bitmap.CompressFormat.JPEG, JPEG_QUALITY, outputStream)
+        outputStream.flush()
+        outputStream.close()
+        finalBitmap.recycle()
+
+        val compressedSize = compressedFile.length()
+
+        return CompressedImage(
+            file = compressedFile,
+            mimeType = "image/jpeg",
+            originalSize = originalSize,
+            compressedSize = compressedSize,
+            wasCompressed = true
+        )
+    }
+
+    /**
+     * Сжать изображение из File (для камеры).
+     */
+    fun compressImageFile(context: Context, file: File): CompressedImage {
+        val uri = android.net.Uri.fromFile(file)
+        return compressImage(context, uri)
+    }
+
+    private fun calculateTargetSize(width: Int, height: Int): Size {
+        val maxSide = MAX_SIDE
+        return if (width <= maxSide && height <= maxSide) {
+            Size(width, height)
+        } else {
+            val ratio = if (width > height) maxSide.toFloat() / width else maxSide.toFloat() / height
+            Size((width * ratio).toInt(), (height * ratio).toInt())
+        }
+    }
+
+    private fun calculateInSampleSize(options: BitmapFactory.Options, reqWidth: Int, reqHeight: Int): Int {
+        val (height, width) = Pair(options.outHeight, options.outWidth)
+        var inSampleSize = 1
+
+        if (height > reqHeight || width > reqWidth) {
+            val halfHeight = height / 2
+            val halfWidth = width / 2
+            while ((halfHeight / inSampleSize) >= reqHeight && (halfWidth / inSampleSize) >= reqWidth) {
+                inSampleSize *= 2
+            }
+        }
+        return inSampleSize
+    }
+
+    private fun getOrientation(context: Context, uri: Uri): Int {
+        return try {
+            context.contentResolver.openInputStream(uri)?.use { input ->
+                val exif = ExifInterface(input)
+                exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL)
+            } ?: ExifInterface.ORIENTATION_NORMAL
+        } catch (e: Exception) {
+            ExifInterface.ORIENTATION_NORMAL
+        }
+    }
+
+    private fun rotateBitmapIfNeeded(bitmap: Bitmap, orientation: Int): Bitmap {
+        val matrix = android.graphics.Matrix()
+        var needsRotation = false
+
+        when (orientation) {
+            ExifInterface.ORIENTATION_ROTATE_90 -> {
+                matrix.postRotate(90f)
+                needsRotation = true
+            }
+            ExifInterface.ORIENTATION_ROTATE_180 -> {
+                matrix.postRotate(180f)
+                needsRotation = true
+            }
+            ExifInterface.ORIENTATION_ROTATE_270 -> {
+                matrix.postRotate(270f)
+                needsRotation = true
+            }
+            ExifInterface.ORIENTATION_FLIP_HORIZONTAL -> {
+                matrix.postScale(-1f, 1f)
+                needsRotation = true
+            }
+            ExifInterface.ORIENTATION_FLIP_VERTICAL -> {
+                matrix.postScale(1f, -1f)
+                needsRotation = true
+            }
+            else -> return bitmap
+        }
+
+        return if (needsRotation) {
+            Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
+        } else {
+            bitmap
+        }
+    }
+
+    private fun uriToFile(context: Context, uri: Uri): File {
+        // Для file:// URI — используем путь напрямую
+        if (uri.scheme == "file") {
+            val path = uri.path
+                ?: throw IllegalArgumentException("URI has null path: $uri")
+            return File(path)
+        }
+
+        val tempFile = File.createTempFile("original_", ".tmp", context.cacheDir)
+        context.contentResolver.openInputStream(uri)?.use { input ->
+            FileOutputStream(tempFile).use { output ->
+                input.copyTo(output)
+            }
+        }
+        return tempFile
+    }
+
+    private fun maxOf(a: Int, b: Int) = if (a > b) a else b
+}
+
+/**
+ * Результат сжатия изображения.
+ */
+data class CompressedImage(
+    val file: File,
+    val mimeType: String,
+    val originalSize: Long,
+    val compressedSize: Long,
+    val wasCompressed: Boolean
+) {
+    val compressionRatio: Float
+        get() = if (originalSize > 0) compressedSize.toFloat() / originalSize else 1f
+
+    val compressionPercent: Int
+        get() = ((1f - compressionRatio) * 100).toInt()
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/util/PhoneUtils.kt

@@ -0,0 +1,97 @@
+package ru.lastochka.messenger.util
+
+/**
+ * Форматирование телефона в формат +7 (XXX) XXX-XX-XX
+ * Возвращает Pair(formattedText, newCursorPos) для корректной работы курсора
+ */
+fun formatPhoneNumberWithCursor(text: String, cursorPosition: Int): Pair<String, Int> {
+    // Извлекаем только цифры из всего текста
+    val fullDigits = text.filter { it.isDigit() }
+
+    // Если начинается с 8, заменяем на 7
+    val cleaned = if (fullDigits.startsWith("8") && fullDigits.length >= 1) {
+        "7" + fullDigits.substring(1)
+    } else {
+        fullDigits
+    }
+
+    // Ограничиваем 11 цифрами (7 + 10)
+    val digits = if (cleaned.length > 11) cleaned.substring(0, 11) else cleaned
+
+    // Извлекаем только цифры до позиции курсора в исходном тексте
+    val beforeCursor = text.substring(0, cursorPosition.coerceAtMost(text.length)).filter { it.isDigit() }
+    val digitsBeforeCursor = beforeCursor.length.coerceAtMost(digits.length)
+
+    // Строим форматированную строку +7 (XXX) XXX-XX-XX
+    val formatted = buildString {
+        if (digits.isEmpty()) return@buildString
+
+        append("+7")
+        if (digits.length > 1) {
+            append(" (")
+            val end = 1 + (digits.length - 1).coerceAtMost(3)
+            append(digits.substring(1, end))
+        }
+        if (digits.length > 4) {
+            append(") ")
+            val end = 4 + (digits.length - 4).coerceAtMost(3)
+            append(digits.substring(4, end))
+        }
+        if (digits.length > 7) {
+            append("-")
+            val end = 7 + (digits.length - 7).coerceAtMost(2)
+            append(digits.substring(7, end))
+        }
+        if (digits.length > 9) {
+            append("-")
+            val end = 9 + (digits.length - 9).coerceAtMost(2)
+            append(digits.substring(9, end))
+        }
+    }
+
+    // Вычисляем позицию курсора в отформатированной строке
+    val newCursorPos = when {
+        digitsBeforeCursor == 0 -> 0
+        digitsBeforeCursor == 1 -> 2  // после "+7"
+        digitsBeforeCursor <= 4 -> 4 + (digitsBeforeCursor - 1)  // внутри "(XXX"
+        digitsBeforeCursor <= 7 -> 9 + (digitsBeforeCursor - 4)  // внутри " XXX"
+        digitsBeforeCursor <= 9 -> 13 + (digitsBeforeCursor - 7) // внутри "-XX"
+        else -> 16 + (digitsBeforeCursor - 9)                    // внутри "-XX"
+    }
+
+    // Не даём курсору выйти за пределы строки
+    val clampedCursor = newCursorPos.coerceAtMost(formatted.length)
+
+    return Pair(formatted, clampedCursor)
+}
+
+/**
+ * Простое форматирование (без управления курсором)
+ */
+fun formatPhoneNumber(input: String): String {
+    return formatPhoneNumberWithCursor(input, input.length).first
+}
+
+/**
+ * Проверка валидности email
+ */
+fun isValidEmail(email: String): Boolean {
+    if (email.isBlank()) return false
+    val pattern = Regex("^[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}$")
+    return pattern.matches(email.trim())
+}
+
+/**
+ * Проверка валидности телефона (11 цифр, начинается с 7)
+ */
+fun isValidPhoneNumber(phone: String): Boolean {
+    val cleaned = phone.filter { it.isDigit() }
+    return cleaned.length == 11 && cleaned.startsWith("7")
+}
+
+/**
+ * Очистка номера телефона (только цифры)
+ */
+fun cleanPhoneNumber(phone: String): String {
+    return phone.filter { it.isDigit() }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/util/RetryWithBackoff.kt

@@ -0,0 +1,111 @@
+package ru.lastochka.messenger.util
+
+import kotlinx.coroutines.delay
+import kotlin.math.min
+import kotlin.math.pow
+
+/**
+ * Утилита для выполнения операций с retry логикой и exponential backoff.
+ *
+ * Пример использования:
+ * ```
+ * val result = retryWithBackoff(
+ *     maxRetries = 3,
+ *     initialDelayMs = 1000L,
+ *     maxDelayMs = 10000L,
+ *     backoffFactor = 2.0
+ * ) {
+ *     tinodeClient.login(username, password)
+ * }
+ * ```
+ *
+ * @param maxRetries Максимальное количество попыток (не считая первую)
+ * @param initialDelayMs Начальная задержка в мс (по умолчанию 1 секунда)
+ * @param maxDelayMs Максимальная задержка в мс (по умолчанию 30 секунд)
+ * @param backoffFactor Множитель для экспоненциального роста (по умолчанию 2.0)
+ * @param shouldRetry Предикат для определения стоит ли повторять попытку
+ * @param block Выполняемая операция
+ * @return Результат операции или последнюю ошибку
+ */
+suspend fun <T> retryWithBackoff(
+    maxRetries: Int = 3,
+    initialDelayMs: Long = 1_000L,
+    maxDelayMs: Long = 30_000L,
+    backoffFactor: Double = 2.0,
+    shouldRetry: (Throwable) -> Boolean = { true },
+    block: suspend () -> T
+): Result<T> {
+    var lastError: Throwable? = null
+    
+    repeat(maxRetries + 1) { attempt ->
+        try {
+            val result = block()
+            return Result.success(result)
+        } catch (e: Throwable) {
+            lastError = e
+            
+            // Если это последняя попытка или не стоит retry — выходим
+            if (attempt == maxRetries || !shouldRetry(e)) {
+                return Result.failure(e)
+            }
+            
+            // Вычисляем задержку с exponential backoff
+            val delayMs = (initialDelayMs * backoffFactor.pow(attempt)).toLong()
+            val actualDelay = min(delayMs, maxDelayMs)
+            
+            // Ждём перед следующей попыткой
+            delay(actualDelay)
+        }
+    }
+    
+    // Теоретически недостижимо, но компилятор требует
+    return Result.failure(lastError ?: RuntimeException("Unknown error"))
+}
+
+/**
+ * Класс для конфигурации retry политики.
+ */
+class RetryPolicy(
+    val maxRetries: Int = 3,
+    val initialDelayMs: Long = 1_000L,
+    val maxDelayMs: Long = 30_000L,
+    val backoffFactor: Double = 2.0,
+    val shouldRetry: (Throwable) -> Boolean = { true }
+) {
+    companion object {
+        /** Быстрый retry для лёгких операций */
+        val Quick = RetryPolicy(
+            maxRetries = 2,
+            initialDelayMs = 500L,
+            maxDelayMs = 2_000L,
+            backoffFactor = 2.0
+        )
+        
+        /** Стандартный retry для сетевых операций */
+        val Network = RetryPolicy(
+            maxRetries = 3,
+            initialDelayMs = 1_000L,
+            maxDelayMs = 10_000L,
+            backoffFactor = 2.0
+        )
+        
+        /** Консервативный retry для критичных операций */
+        val Conservative = RetryPolicy(
+            maxRetries = 5,
+            initialDelayMs = 2_000L,
+            maxDelayMs = 30_000L,
+            backoffFactor = 1.5
+        )
+    }
+    
+    suspend operator fun <T> invoke(block: suspend () -> T): Result<T> {
+        return retryWithBackoff(
+            maxRetries = maxRetries,
+            initialDelayMs = initialDelayMs,
+            maxDelayMs = maxDelayMs,
+            backoffFactor = backoffFactor,
+            shouldRetry = shouldRetry,
+            block = block
+        )
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/AuthViewModel.kt

@@ -0,0 +1,134 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.SessionRepository
+import javax.inject.Inject
+
+/**
+ * ViewModel экрана входа/регистрации.
+ */
+@HiltViewModel
+class AuthViewModel @Inject constructor(
+    private val sessionRepository: SessionRepository
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow<AuthUiState>(AuthUiState.Idle)
+    val uiState: StateFlow<AuthUiState> = _uiState.asStateFlow()
+
+    private val _authSuccess = MutableSharedFlow<Unit>(extraBufferCapacity = 1)
+    val authSuccess: SharedFlow<Unit> = _authSuccess.asSharedFlow()
+
+    /**
+     * Попытка автологина по сохранённому токену.
+     */
+    fun tryAutoLogin() {
+        viewModelScope.launch {
+            val result = sessionRepository.autoLogin()
+            if (result.isSuccess) {
+                _authSuccess.emit(Unit)
+            }
+        }
+    }
+
+    /**
+     * Войти по логину/паролю.
+     * Использует SessionRepository — сохраняет UID в DataStore.
+     */
+    fun login(username: String, password: String) {
+        viewModelScope.launch {
+            _uiState.value = AuthUiState.Loading
+            val result = sessionRepository.login(username, password)
+            _uiState.value = if (result.isSuccess) {
+                _authSuccess.emit(Unit)
+                AuthUiState.Success
+            } else {
+                AuthUiState.Error(result.exceptionOrNull()?.message ?: "Ошибка входа")
+            }
+        }
+    }
+
+    /**
+     * Зарегистрировать нового пользователя.
+     */
+    fun register(username: String, password: String, displayName: String) {
+        viewModelScope.launch {
+            _uiState.value = AuthUiState.Loading
+            val result = sessionRepository.register(username, password, displayName)
+            _uiState.value = if (result.isSuccess) {
+                _authSuccess.emit(Unit)
+                AuthUiState.Success
+            } else {
+                val msg = result.exceptionOrNull()?.message ?: "Ошибка регистрации"
+                AuthUiState.Error(msg)
+            }
+        }
+    }
+
+    /**
+     * Зарегистрировать нового пользователя с полным профилем (email, телефон).
+     */
+    fun registerWithFullProfile(
+        username: String,
+        password: String,
+        displayName: String,
+        email: String,
+        phone: String
+    ) {
+        viewModelScope.launch {
+            _uiState.value = AuthUiState.Loading
+            val result = sessionRepository.registerWithFullProfile(username, password, displayName, email, phone)
+            _uiState.value = if (result.isSuccess) {
+                _authSuccess.emit(Unit)
+                AuthUiState.Success
+            } else {
+                val msg = result.exceptionOrNull()?.message ?: "Ошибка регистрации"
+                AuthUiState.Error(msg)
+            }
+        }
+    }
+
+    /**
+     * Проверить свободен ли username.
+     */
+    fun checkUsername(username: String, callback: (Boolean) -> Unit) {
+        viewModelScope.launch {
+            val result = sessionRepository.tinodeClient.checkUsername(username)
+            callback(result.getOrDefault(true))
+        }
+    }
+
+    /**
+     * Проверить свободен ли email.
+     */
+    fun checkEmailAvailability(email: String, callback: (Boolean) -> Unit) {
+        viewModelScope.launch {
+            val result = sessionRepository.tinodeClient.checkEmailAvailability(email)
+            callback(result.getOrDefault(true))
+        }
+    }
+
+    /**
+     * Проверить свободен ли телефон.
+     */
+    fun checkPhoneAvailability(phone: String, callback: (Boolean) -> Unit) {
+        viewModelScope.launch {
+            val result = sessionRepository.tinodeClient.checkPhoneAvailability(phone)
+            callback(result.getOrDefault(true))
+        }
+    }
+
+    fun resetState() {
+        _uiState.value = AuthUiState.Idle
+    }
+}
+
+sealed class AuthUiState {
+    data object Idle : AuthUiState()
+    data object Loading : AuthUiState()
+    data object Success : AuthUiState()
+    data class Error(val message: String) : AuthUiState()
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/ChatListViewModel.kt

@@ -0,0 +1,129 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.data.TinodeEvent
+import ru.lastochka.messenger.data.model.MetaSub
+import timber.log.Timber
+import javax.inject.Inject
+
+/**
+ * ViewModel списка чатов.
+ */
+@HiltViewModel
+class ChatListViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    private val _contacts = MutableStateFlow<List<ContactInfo>>(emptyList())
+    val contacts: StateFlow<List<ContactInfo>> = _contacts.asStateFlow()
+
+    /**
+     * Суммарное количество непрочитанных сообщений.
+     * Используется для badge на табле "Чаты".
+     */
+    val totalUnread: StateFlow<Int> = _contacts
+        .map { contacts -> contacts.sumOf { it.unread.coerceAtLeast(0) } }
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), 0)
+
+    private val _searchQuery = MutableStateFlow("")
+    val searchQuery: StateFlow<String> = _searchQuery.asStateFlow()
+
+    // Фильтрованный список для UI
+    val filteredContacts: StateFlow<List<ContactInfo>> = combine(_contacts, _searchQuery) { contacts, query ->
+        if (query.isBlank()) contacts
+        else contacts.filter { it.displayName.contains(query, ignoreCase = true) }
+    }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptyList())
+
+    private val _isLoading = MutableStateFlow(true)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    private val _error = MutableStateFlow<String?>(null)
+    val error: StateFlow<String?> = _error.asStateFlow()
+
+    private var subs: List<MetaSub> = emptyList()
+
+    init {
+        loadContacts()
+        listenForUpdates()
+    }
+
+    fun onSearchQueryChanged(query: String) {
+        _searchQuery.value = query
+    }
+
+    private fun loadContacts() {
+        viewModelScope.launch {
+            try {
+                Timber.d("ChatListViewModel: loadContacts started")
+                _isLoading.value = true
+                subs = repository.getMeTopic()
+                Timber.d("ChatListViewModel: getMeTopic returned ${subs.size} subs")
+
+                // Не считаем SESSION_EXPIRED если только что залогинились.
+                // Даём серверу время отправить данные. Проверяем только
+                // если есть сохранённый UID НО authState == Unauthenticated
+                // (значит это был autoLogin с истёкшим токеном).
+                val authState = repository.authState.first()
+                if (subs.isEmpty() && authState !is ru.lastochka.messenger.data.AuthState.Authenticated) {
+                    Timber.w("ChatListViewModel: empty subs + not authenticated → SESSION_EXPIRED")
+                    repository.logout()
+                    _error.value = "SESSION_EXPIRED"
+                }
+
+                delay(500)
+                refreshContacts()
+                _isLoading.value = false
+                Timber.d("ChatListViewModel: loadContacts finished, ${_contacts.value.size} contacts")
+            } catch (e: Exception) {
+                Timber.e(e, "ChatListViewModel: loadContacts error")
+                _error.value = e.message
+                _isLoading.value = false
+            }
+        }
+    }
+
+    private fun refreshContacts() {
+        val contacts = repository.getContactsFromSubs(subs)
+        _contacts.value = contacts
+    }
+
+    private fun listenForUpdates() {
+        viewModelScope.launch {
+            repository.events.collect { event ->
+                when (event) {
+                    is TinodeEvent.Meta -> {
+                        // Мета-событие ТОЛЬКО для me-топика — обновляем контакты
+                        if (event.data.topic == "me") {
+                            val newSubs = event.data.sub
+                            if (newSubs != null) {
+                                subs = newSubs
+                                refreshContacts()
+                                Timber.d("ChatListViewModel: updated contacts from meta event (${subs.size} subs)")
+                            }
+                        }
+                    }
+                    is TinodeEvent.Presence -> {
+                        // Изменение присутствия — просто обновляем UI из текущих subs
+                        refreshContacts()
+                    }
+                    else -> {}
+                }
+            }
+        }
+    }
+
+    fun refresh() {
+        refreshContacts()
+    }
+
+    fun clearError() {
+        _error.value = null
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/ChatViewModel.kt

@@ -0,0 +1,476 @@
+package ru.lastochka.messenger.viewmodel
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.TinodeEvent
+import ru.lastochka.messenger.data.UiMessage
+import ru.lastochka.messenger.data.local.AppDatabase
+import ru.lastochka.messenger.data.local.MessageEntity
+import ru.lastochka.messenger.util.ImageCompressor
+import timber.log.Timber
+import java.util.*
+import javax.inject.Inject
+
+/**
+ * Тип действия с сообщением.
+ */
+enum class MessageActionType {
+    REPLY, COPY, EDIT, DELETE
+}
+
+/**
+ * ViewModel экрана чата.
+ */
+@HiltViewModel
+class ChatViewModel @Inject constructor(
+    @ApplicationContext private val context: Context,
+    private val repository: ChatRepository,
+    private val database: AppDatabase,
+    savedStateHandle: SavedStateHandle
+) : ViewModel() {
+
+    private val topicName: String = checkNotNull(savedStateHandle["topicName"])
+
+    private val _messages = MutableStateFlow<List<UiMessage>>(emptyList())
+    val messages: StateFlow<List<UiMessage>> = _messages.asStateFlow()
+
+    private val _topicTitle = MutableStateFlow("")
+    val topicTitle: StateFlow<String> = _topicTitle.asStateFlow()
+
+    private val _isTyping = MutableStateFlow(false)
+    val isTyping: StateFlow<Boolean> = _isTyping.asStateFlow()
+
+    // Job для авто-скрытия typing indicator — отменяется при новом kp
+    private var typingHideJob: kotlinx.coroutines.Job? = null
+
+    private val _isLoading = MutableStateFlow(true)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    private val _error = MutableStateFlow<String?>(null)
+    val error: StateFlow<String?> = _error.asStateFlow()
+
+    // State for message actions
+    private val _selectedMessage = MutableStateFlow<UiMessage?>(null)
+    val selectedMessage: StateFlow<UiMessage?> = _selectedMessage.asStateFlow()
+
+    private val _replyToMessage = MutableStateFlow<UiMessage?>(null)
+    val replyToMessage: StateFlow<UiMessage?> = _replyToMessage.asStateFlow()
+
+    private val _editingMessage = MutableStateFlow<UiMessage?>(null)
+    val editingMessage: StateFlow<UiMessage?> = _editingMessage.asStateFlow()
+
+    init {
+        loadTopic()
+        loadMessages()
+        listenForMessages()
+    }
+
+    private fun loadTopic() {
+        viewModelScope.launch {
+            _topicTitle.value = repository.getTopicTitle(topicName)
+        }
+    }
+
+    private fun loadMessages() {
+        viewModelScope.launch {
+            _isLoading.value = true
+            try {
+                repository.subscribeTopic(topicName)
+
+                database.messageDao().getMessagesForTopic(topicName).collect { entities ->
+                    _messages.value = entities.map { entity ->
+                        UiMessage(
+                            seqId = entity.seqId,
+                            from = entity.from,
+                            senderName = entity.senderName,
+                            content = entity.content,
+                            timestamp = Date(entity.timestamp),
+                            isOwn = entity.isOwn,
+                            isRead = entity.isRead,
+                            isEdited = entity.isEdited,
+                            hasAttachment = entity.hasAttachment,
+                            attachmentUrl = entity.attachmentUrl,
+                            replyToContent = entity.replyToContent
+                        )
+                    }
+                    _isLoading.value = false
+                }
+            } catch (e: Exception) {
+                _error.value = e.message
+                _isLoading.value = false
+            }
+        }
+    }
+
+    private fun listenForMessages() {
+        viewModelScope.launch {
+            repository.events.collect { event ->
+                when (event) {
+                    is TinodeEvent.NewMessage -> {
+                        val data = event.data
+                        if (data.topic == topicName) {
+                            // Эхо своего сообщения — обновляем локальную запись с tempSeqId на реальный seqId
+                            val myUid = repository.myUid
+                            if (data.from == myUid) {
+                                // Эхо своего сообщения — просто пропускаем.
+                                // Для текстовых сообщений: Room уже получил его из listenForMessages → saveMessageFromServer.
+                                // Для изображений: URL уже сохранён в upload-функции через updateAttachmentFull(tempSeqId, ...).
+                                // updateLastOwnAttachmentUrl УДАЛЁН — он обновлял ВСЕ сообщения с seqId < 0,
+                                // заменяя разные картинки одной и той же (баг #2).
+                                return@collect
+                            }
+                            saveMessageFromServer(data)
+                            repository.markAsRead(topicName, data.seq)
+                        }
+                    }
+                    is TinodeEvent.Info -> {
+                        val info = event.data
+                        if (info.topic == topicName && info.what == "kp") {
+                            _isTyping.value = true
+                            // Отменяем предыдущий таймер скрытия
+                            typingHideJob?.cancel()
+                            typingHideJob = viewModelScope.launch {
+                                kotlinx.coroutines.delay(3000)
+                                _isTyping.value = false
+                            }
+                        }
+                    }
+                    else -> {}
+                }
+            }
+        }
+    }
+
+    private suspend fun saveMessageFromServer(data: ru.lastochka.messenger.data.model.DataPacket) {
+        val content = data.content?.txt ?: ""
+
+        // Проверяем есть ли вложения (Drafty format)
+        var hasAttachment = false
+        var attachmentUrl: String? = null
+        var attachmentType: String? = null
+        var attachmentBase64: String? = null
+
+        val entities = data.content?.ent
+        if (!entities.isNullOrEmpty()) {
+            val firstEntity = entities.firstOrNull()
+            val entityData = firstEntity?.`data`
+            attachmentUrl = entityData?.ref
+            attachmentType = entityData?.mime
+
+            // Case 1: ref (URL from server upload)
+            if (attachmentUrl != null) {
+                hasAttachment = true
+            }
+            // Case 2: val (inline base64 — from web client)
+            else if (entityData?.val_str != null) {
+                val mime = entityData.mime ?: "image/jpeg"
+                attachmentUrl = "data:${mime};base64,${entityData.val_str}"
+                attachmentBase64 = attachmentUrl
+                hasAttachment = true
+            }
+        }
+
+        // Проверим extra attachments
+        if (!hasAttachment) {
+            val extraUrls = data.extra?.attachments
+            if (!extraUrls.isNullOrEmpty()) {
+                attachmentUrl = extraUrls.first()
+                attachmentType = "image/jpeg"
+                hasAttachment = true
+            }
+        }
+
+        // Определяем sender name
+        val senderName = if (data.from == repository.myUid) {
+            "Я"
+        } else {
+            data.from ?: ""
+        }
+
+        val entity = MessageEntity(
+            seqId = data.seq,
+            topicName = topicName,
+            from = data.from ?: "",
+            senderName = senderName,
+            content = if (hasAttachment && content == " ") "" else content,
+            rawContent = content,
+            timestamp = data.ts?.let { parseTimestamp(it) } ?: System.currentTimeMillis(),
+            isOwn = data.from == repository.myUid,
+            isRead = true,
+            isEdited = false,
+            hasAttachment = hasAttachment,
+            attachmentType = attachmentType,
+            attachmentUrl = attachmentUrl
+        )
+        database.messageDao().insertMessage(entity)
+    }
+
+    // ─── Message Actions ────────────────────────────────────────────
+
+    fun onMessageLongClick(message: UiMessage) {
+        _selectedMessage.value = message
+    }
+
+    fun dismissActionMenu() {
+        _selectedMessage.value = null
+    }
+
+    fun executeAction(action: MessageActionType) {
+        val msg = _selectedMessage.value ?: return
+        when (action) {
+            MessageActionType.COPY -> copyMessage(msg)
+            MessageActionType.REPLY -> replyToMessage(msg)
+            MessageActionType.EDIT -> editMessage(msg)
+            MessageActionType.DELETE -> deleteMessage(msg)
+        }
+        _selectedMessage.value = null
+    }
+
+    private fun copyMessage(message: UiMessage) {
+        val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+        val clip = ClipData.newPlainText("message", message.content)
+        clipboard.setPrimaryClip(clip)
+    }
+
+    private fun replyToMessage(message: UiMessage) {
+        _replyToMessage.value = message
+    }
+
+    fun replyToMessageExternally(message: UiMessage) {
+        _replyToMessage.value = message
+    }
+
+    fun clearReply() {
+        _replyToMessage.value = null
+    }
+
+    private fun editMessage(message: UiMessage) {
+        if (message.isOwn) {
+            _editingMessage.value = message
+        }
+    }
+
+    fun clearEdit() {
+        _editingMessage.value = null
+    }
+
+    /**
+     * Отредактировать сообщение.
+     */
+    fun editMessage(seqId: Int, newText: String) {
+        viewModelScope.launch {
+            try {
+                repository.editMessage(topicName, seqId, newText)
+                // Обновить локально
+                database.messageDao().updateMessageContent(seqId, newText, isEdited = true)
+                _editingMessage.value = null
+            } catch (e: Exception) {
+                _error.value = "Ошибка редактирования: ${e.message}"
+            }
+        }
+    }
+
+    private fun deleteMessage(message: UiMessage) {
+        if (!message.isOwn) return
+        viewModelScope.launch {
+            try {
+                // Удалить с сервера
+                val result = repository.deleteMessage(topicName, message.seqId)
+                if (result.isSuccess) {
+                    // Удалить из локальной БД
+                    database.messageDao().deleteMessageBySeqId(message.seqId)
+                } else {
+                    _error.value = "Ошибка удаления: ${result.exceptionOrNull()?.message}"
+                }
+            } catch (e: Exception) {
+                _error.value = "Ошибка удаления: ${e.message}"
+            }
+        }
+    }
+
+    // ─── Pagination ────────────────────────────────────────────
+
+    /**
+     * Загрузить больше сообщений (при скролле вверх).
+     * Сервер отправляет DATA сообщения → event flow → listenForMessages → Room.
+     */
+    fun loadMoreMessages() {
+        viewModelScope.launch {
+            val currentMessages = _messages.value
+            if (currentMessages.isEmpty()) return@launch
+
+            val minSeq = currentMessages.minOfOrNull { it.seqId } ?: return@launch
+            repository.loadMessagesBefore(topicName, minSeq, limit = 50)
+        }
+    }
+
+    fun sendMessage(text: String) {
+        if (text.isBlank()) return
+        viewModelScope.launch {
+            try {
+                repository.sendTextMessage(topicName, text)
+
+                val tempId = -(System.currentTimeMillis() % 100000).toInt()
+                val entity = MessageEntity(
+                    seqId = tempId,
+                    topicName = topicName,
+                    from = "me",
+                    senderName = "",
+                    content = text,
+                    rawContent = text,
+                    timestamp = System.currentTimeMillis(),
+                    isOwn = true,
+                    isRead = false,
+                    isEdited = false,
+                    hasAttachment = false,
+                    attachmentType = null,
+                    attachmentUrl = null,
+                    replyToSeq = _replyToMessage.value?.seqId,
+                    replyToContent = _replyToMessage.value?.content
+                )
+                database.messageDao().insertMessage(entity)
+                
+                // Clear reply state
+                _replyToMessage.value = null
+            } catch (e: Exception) {
+                _error.value = e.message
+            }
+        }
+    }
+
+    // State for image sending
+    private val _isSendingImage = MutableStateFlow(false)
+    val isSendingImage: StateFlow<Boolean> = _isSendingImage.asStateFlow()
+
+    // Progress 0.0..1.0
+    private val _imageUploadProgress = MutableStateFlow(0f)
+    val imageUploadProgress: StateFlow<Float> = _imageUploadProgress.asStateFlow()
+
+    fun sendImageMessage(
+        imageUri: android.net.Uri,
+        mimeType: String,
+        fileName: String,
+        caption: String = ""
+    ) {
+        viewModelScope.launch {
+            // Определяем размер файла заранее для optimistic update
+            val fileSize = try {
+                context.contentResolver.openAssetFileDescriptor(imageUri, "r")?.length ?: 0L
+            } catch (e: Exception) { 0L }
+
+            // Текст для отобра в UI: caption или "[Изображение]"
+            val displayText = if (caption.isNotBlank()) caption else ""
+
+            // Optimistic update: сохраняем локальное сообщение ДО отправки
+            val tempSeqId = -(System.currentTimeMillis() % 100000).toInt()
+            val replyTo = _replyToMessage.value
+            val localEntity = MessageEntity(
+                seqId = tempSeqId,
+                topicName = topicName,
+                from = "me",
+                senderName = "",
+                content = displayText,
+                rawContent = displayText,
+                timestamp = System.currentTimeMillis(),
+                isOwn = true,
+                isRead = false,
+                isEdited = false,
+                hasAttachment = true,
+                attachmentType = mimeType,
+                attachmentUrl = null, // будет обновлено после успешной отправки
+                replyToSeq = replyTo?.seqId,
+                replyToContent = replyTo?.content
+            )
+            database.messageDao().insertMessage(localEntity)
+            _replyToMessage.value = null
+
+            try {
+                _isSendingImage.value = true
+                _imageUploadProgress.value = 0f
+
+                // 1. Compress image (если нужно)
+                val compressed = ImageCompressor.compressImage(context, imageUri)
+                val compressedUri = android.net.Uri.fromFile(compressed.file)
+                val effectiveMimeType = compressed.mimeType
+                val effectiveFileName = if (effectiveMimeType == "image/jpeg")
+                    fileName.substringBeforeLast('.') + ".jpg" else fileName
+
+                if (compressed.wasCompressed) {
+                    Timber.d(
+                        "Image compressed: ${compressed.originalSize} → ${compressed.compressedSize} " +
+                            "(${compressed.compressionPercent}% saved)"
+                    )
+                }
+
+                // 2. Send with progress — передаём размер сжатого файла
+                val result = repository.sendImageMessageWithProgress(
+                    topicName, compressedUri, effectiveMimeType,
+                    effectiveFileName, displayText,
+                    compressed.compressedSize
+                ) { progress ->
+                    _imageUploadProgress.value = progress
+                }
+
+                // 3. Clean up temp file
+                compressed.file.delete()
+
+                if (result.isSuccess) {
+                    val serverUrl = result.getOrNull()
+                    Timber.d("Image upload success: serverUrl=$serverUrl")
+                    if (serverUrl != null) {
+                        // Обновить локальное сообщение: проставить реальный URL файла
+                        // Используем updateAttachmentFull чтобы гарантированно обновить все поля
+                        database.messageDao().updateAttachmentFull(tempSeqId, serverUrl, mimeType)
+                        Timber.d("Updated attachment for seqId=$tempSeqId to $serverUrl (type=$mimeType)")
+                    }
+                } else {
+                    _error.value = "Ошибка отправки изображения: ${result.exceptionOrNull()?.message}"
+                    Timber.e(result.exceptionOrNull(), "Image upload failed")
+                }
+            } catch (e: Exception) {
+                _error.value = "Ошибка: ${e.message}"
+                Timber.e(e, "sendImageMessage failed")
+            } finally {
+                _isSendingImage.value = false
+                _imageUploadProgress.value = 0f
+            }
+        }
+    }
+
+    fun sendTyping() {
+        repository.sendTyping(topicName)
+    }
+
+    fun markAllRead() {
+        viewModelScope.launch {
+            val maxSeq = database.messageDao().getMaxSeq(topicName)
+            if (maxSeq != null) {
+                repository.markAsRead(topicName, maxSeq)
+                database.messageDao().markAllRead(topicName)
+            }
+        }
+    }
+
+    fun clearError() {
+        _error.value = null
+    }
+
+    private fun parseTimestamp(ts: String): Long {
+        return try {
+            val format = java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", java.util.Locale.US)
+            format.timeZone = java.util.TimeZone.getTimeZone("UTC")
+            format.parse(ts)?.time ?: System.currentTimeMillis()
+        } catch (e: Exception) {
+            System.currentTimeMillis()
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/ContactInfoViewModel.kt

@@ -0,0 +1,31 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import javax.inject.Inject
+
+/**
+ * ViewModel для экрана информации о контакте.
+ */
+@HiltViewModel
+class ContactInfoViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    init {
+        // Загрузка данных контакта
+    }
+
+    fun deleteChat() {
+        viewModelScope.launch {
+            // TODO: Реализация удаления чата
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/CreateGroupViewModel.kt

@@ -0,0 +1,79 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.ContactInfo
+import javax.inject.Inject
+
+/**
+ * ViewModel для создания группы.
+ */
+@HiltViewModel
+class CreateGroupViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    private val _groupName = MutableStateFlow("")
+    val groupName: StateFlow<String> = _groupName.asStateFlow()
+
+    private val _description = MutableStateFlow("")
+    val description: StateFlow<String> = _description.asStateFlow()
+
+    private val _contacts = MutableStateFlow<List<ContactInfo>>(emptyList())
+    val contacts: StateFlow<List<ContactInfo>> = _contacts.asStateFlow()
+
+    private val _selectedMembers = MutableStateFlow<List<ContactInfo>>(emptyList())
+    val selectedMembers: StateFlow<List<ContactInfo>> = _selectedMembers.asStateFlow()
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    init {
+        loadContacts()
+    }
+
+    private fun loadContacts() {
+        viewModelScope.launch {
+            // Загружаем контакты из me-топика
+            // В реальном приложении нужно подписаться на Flow
+            val subs = repository.getMeTopic()
+            _contacts.value = repository.getContactsFromSubs(subs)
+        }
+    }
+
+    fun updateGroupName(name: String) {
+        _groupName.value = name
+    }
+
+    fun updateDescription(desc: String) {
+        _description.value = desc
+    }
+
+    fun toggleMember(contact: ContactInfo) {
+        val current = _selectedMembers.value
+        if (current.contains(contact)) {
+            _selectedMembers.value = current - contact
+        } else {
+            _selectedMembers.value = current + contact
+        }
+    }
+
+    fun createGroup(onSuccess: (String) -> Unit) {
+        viewModelScope.launch {
+            _isLoading.value = true
+            try {
+                val members = _selectedMembers.value.map { it.topicName }
+                val result = repository.createGroup(groupName.value, description.value, members)
+                if (result.isSuccess) {
+                    onSuccess(result.getOrNull() ?: "")
+                }
+            } finally {
+                _isLoading.value = false
+            }
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/NewChatViewModel.kt

@@ -0,0 +1,66 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.ContactInfo
+import javax.inject.Inject
+
+/**
+ * ViewModel для поиска пользователей и создания нового чата.
+ */
+@HiltViewModel
+class NewChatViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    private val _searchResults = MutableStateFlow<List<ContactInfo>>(emptyList())
+    val searchResults: StateFlow<List<ContactInfo>> = _searchResults.asStateFlow()
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    private var searchJob: Job? = null
+
+    /**
+     * Поиск пользователей по запросу с debounce.
+     */
+    fun search(query: String) {
+        searchJob?.cancel()
+        
+        if (query.length < 2) {
+            _searchResults.value = emptyList()
+            return
+        }
+
+        searchJob = viewModelScope.launch {
+            delay(400) // Debounce
+            _isLoading.value = true
+            try {
+                val results = repository.searchUsers(query)
+                _searchResults.value = results
+            } catch (e: Exception) {
+                _searchResults.value = emptyList()
+            } finally {
+                _isLoading.value = false
+            }
+        }
+    }
+
+    /**
+     * Начать чат с выбранным пользователем.
+     */
+    suspend fun startChat(topicName: String): Result<Unit> {
+        return repository.startChatWithUser(topicName)
+    }
+
+    fun clearResults() {
+        _searchResults.value = emptyList()
+        searchJob?.cancel()
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/ProfileViewModel.kt

@@ -0,0 +1,66 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import javax.inject.Inject
+
+/**
+ * ViewModel для экрана профиля.
+ */
+@HiltViewModel
+class ProfileViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    private val _name = MutableStateFlow("")
+    val name: StateFlow<String> = _name.asStateFlow()
+
+    private val _bio = MutableStateFlow("")
+    val bio: StateFlow<String> = _bio.asStateFlow()
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    init {
+        loadProfile()
+    }
+
+    private fun loadProfile() {
+        viewModelScope.launch {
+            try {
+                val result = repository.getMyProfile()
+                if (result.isSuccess) {
+                    val profile = result.getOrNull()
+                    _name.value = profile?.displayName ?: ""
+                    _bio.value = profile?.bio ?: ""
+                }
+            } catch (e: Exception) {
+                // Ошибка загрузки — оставляем пустые значения
+            }
+        }
+    }
+
+    fun updateName(newName: String) {
+        _name.value = newName
+    }
+
+    fun updateBio(newBio: String) {
+        _bio.value = newBio
+    }
+
+    suspend fun saveProfile() {
+        _isLoading.value = true
+        try {
+            val result = repository.updateProfile(name.value, bio.value)
+            if (result.isFailure) {
+                // Handle error if needed
+            }
+        } finally {
+            _isLoading.value = false
+        }
+    }
+}

lastochka-android-compose/app/src/main/java/ru/lastochka/messenger/viewmodel/SettingsViewModel.kt

@@ -0,0 +1,21 @@
+package ru.lastochka.messenger.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.launch
+import ru.lastochka.messenger.data.ChatRepository
+import javax.inject.Inject
+
+/**
+ * ViewModel для экрана настроек.
+ */
+@HiltViewModel
+class SettingsViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+
+    suspend fun logout() {
+        repository.logout()
+    }
+}

lastochka-android-compose/app/src/main/res/drawable/splash_screen.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
+            android:opacity="opaque">
+
+    <item android:drawable="@color/colorSplashScreenBackground" />
+
+    <item>
+        <bitmap
+            android:src="@drawable/logo_src"
+            android:width="180dp"
+            android:height="180dp"
+            android:gravity="center"/>
+    </item>
+
+</layer-list>

lastochka-android-compose/app/src/main/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/brand_primary"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground_padded"/>
+</adaptive-icon>

lastochka-android-compose/app/src/main/res/mipmap-anydpi/ic_launcher_foreground_padded.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Inset wrapper для иконки лаунчера.
+  Добавляет 16% отступ (safe zone) чтобы лого не обрезалось
+  круглой/квадратной маской adaptive icon.
+-->
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+    android:drawable="@mipmap/ic_launcher_foreground"
+    android:inset="16%" />

lastochka-android-compose/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/brand_primary"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground_padded"/>
+</adaptive-icon>

lastochka-android-compose/app/src/main/res/values-night/colors.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Splash screen (dark mode) -->
+    <color name="colorSplashScreenBackground">#3B3E7F</color>
+</resources>

lastochka-android-compose/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <!-- Splash Screen theme for dark mode -->
+    <style name="Theme.App.Starting" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenBackground">@color/background_dark</item>
+        <item name="windowSplashScreenAnimatedIcon">@drawable/logo_splash</item>
+        <item name="windowSplashScreenAnimationDuration">800</item>
+        <item name="splashScreenIconSize">96dp</item>
+        <item name="postSplashScreenTheme">@style/Theme.Lаstochka</item>
+        <item name="android:statusBarColor">@color/background_dark</item>
+        <item name="android:navigationBarColor">@color/background_dark</item>
+    </style>
+
+</resources>

lastochka-android-compose/app/src/main/res/values/colors.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Lastochka brand colors -->
+    <color name="brand_primary">#5B5EF4</color>
+    <color name="brand_primary_dark">#4338CA</color>
+    <color name="brand_secondary">#7B61FF</color>
+    <color name="brand_secondary_dark">#5C45D6</color>
+    <color name="brand_accent">#FFD93D</color>
+
+    <!-- Light theme -->
+    <color name="surface">#FFFFFF</color>
+    <color name="surface_variant">#F5F5F5</color>
+    <color name="background">#EFEFF3</color>
+    <color name="on_surface">#1A1A1A</color>
+    <color name="on_surface_variant">#666666</color>
+    <color name="outline">#E0E0E0</color>
+
+    <!-- Message bubbles (light) -->
+    <color name="bubble_own">#EEF2FF</color>
+    <color name="bubble_peer">#FFFFFF</color>
+    <color name="bubble_own_text">#1A1A1A</color>
+    <color name="bubble_peer_text">#1A1A1A</color>
+
+    <!-- Dark theme -->
+    <color name="surface_dark">#17212B</color>
+    <color name="surface_variant_dark">#1E2C3A</color>
+    <color name="background_dark">#0E1621</color>
+    <color name="on_surface_dark">#F5F5F5</color>
+    <color name="on_surface_variant_dark">#9E9E9E</color>
+    <color name="outline_dark">#2B3A4A</color>
+
+    <!-- Message bubbles (dark) -->
+    <color name="bubble_own_dark">#2B5278</color>
+    <color name="bubble_peer_dark">#182533</color>
+    <color name="bubble_own_text_dark">#E8E8E8</color>
+    <color name="bubble_peer_text_dark">#E8E8E8</color>
+
+    <!-- Status -->
+    <color name="online">#40C040</color>
+    <color name="read_receipt">#5B5EF4</color>
+    <color name="sent_receipt">#9E9E9E</color>
+
+    <!-- Selection -->
+    <color name="selection_overlay">#2F3F51B5</color>
+
+    <!-- Splash screen -->
+    <color name="colorSplashScreenBackground">#5B5EF4</color>
+
+    <!-- Launcher -->
+    <color name="launcherBackground">#5B5EF4</color>
+</resources>

lastochka-android-compose/app/src/main/res/values/strings.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Ласточка</string>
+    <string name="app_name_full">Ласточка Мессенджер</string>
+
+    <!-- Login -->
+    <string name="login_title">Вход в Ласточку</string>
+    <string name="login_username">Имя пользователя или телефон</string>
+    <string name="login_password">Пароль</string>
+    <string name="login_button">Войти</string>
+    <string name="login_no_account">Нет аккаунта? Зарегистрироваться</string>
+    <string name="login_error">Неверное имя или пароль</string>
+    <string name="login_host">Сервер</string>
+
+    <!-- Registration -->
+    <string name="register_title">Регистрация</string>
+    <string name="register_name">Ваше имя</string>
+    <string name="register_name_optional">(необязательно)</string>
+    <string name="register_username">Логин</string>
+    <string name="register_email">Email</string>
+    <string name="register_phone">Телефон</string>
+    <string name="register_password">Пароль</string>
+    <string name="register_password_confirm">Подтверждение пароля</string>
+    <string name="register_button">Зарегистрироваться</string>
+    <string name="register_have_account">Уже есть аккаунт? Войти</string>
+    <string name="register_error">Ошибка регистрации</string>
+    <string name="register_password_mismatch">Пароли не совпадают</string>
+    <string name="register_username_taken">Этот логин уже занят</string>
+    <string name="register_email_taken">Этот email уже зарегистрирован</string>
+    <string name="register_phone_taken">Этот номер уже зарегистрирован</string>
+    <string name="register_username_short">Логин должен быть не менее 3 символов</string>
+    <string name="register_username_invalid">Логин может содержать только буквы, цифры и подчёркивание</string>
+    <string name="register_email_invalid">Введите корректный email</string>
+    <string name="register_phone_invalid">Введите корректный номер телефона</string>
+    <string name="register_password_short">Пароль должен быть не менее 6 символов</string>
+    <string name="register_username_available">Логин доступен</string>
+    <string name="register_email_available">Email доступен</string>
+    <string name="register_phone_available">Номер доступен</string>
+    <string name="register_terms">Регистрируясь, вы принимаете условия использования и политику конфиденциальности</string>
+
+    <!-- Chat list -->
+    <string name="chats_title">Чаты</string>
+    <string name="chats_empty">Нет чатов</string>
+    <string name="chats_empty_hint">Нажмите + чтобы начать диалог</string>
+    <string name="chat_new">Новый чат</string>
+
+    <!-- Chat -->
+    <string name="chat_typing">печатает…</string>
+    <string name="chat_online">в сети</string>
+    <string name="chat_offline">не в сети</string>
+    <string name="chat_last_seen">был(а) %s</string>
+    <string name="chat_message_hint">Сообщение…</string>
+    <string name="chat_send">Отправить</string>
+    <string name="chat_edit">Редактировать</string>
+    <string name="chat_delete">Удалить</string>
+    <string name="chat_forward">Переслать</string>
+    <string name="chat_reply">Ответить</string>
+    <string name="chat_copy">Копировать</string>
+    <string name="chat_edited">(ред.)</string>
+
+    <!-- Profile -->
+    <string name="profile_title">Профиль</string>
+    <string name="profile_logout">Выйти</string>
+    <string name="profile_name">Имя</string>
+    <string name="profile_username">Имя пользователя</string>
+
+    <!-- Common -->
+    <string name="today">Сегодня</string>
+    <string name="yesterday">Вчера</string>
+    <string name="you">Вы</string>
+    <string name="just_now">только что</string>
+    <string name="muted">Без звука</string>
+    <string name="pinned">Закреплено</string>
+
+    <!-- Errors -->
+    <string name="error_network">Нет подключения к интернету</string>
+    <string name="error_server">Ошибка сервера</string>
+    <string name="error_unknown">Неизвестная ошибка</string>
+</resources>

lastochka-android-compose/app/src/main/res/values/themes.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Splash Screen theme (Android 12+) -->
+    <style name="Theme.App.Starting" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenBackground">@color/brand_primary</item>
+        <item name="windowSplashScreenAnimatedIcon">@drawable/logo_splash</item>
+        <item name="windowSplashScreenAnimationDuration">800</item>
+        <item name="splashScreenIconSize">96dp</item>
+        <item name="postSplashScreenTheme">@style/Theme.Lаstochka</item>
+        <item name="android:statusBarColor">@color/brand_primary</item>
+        <item name="android:navigationBarColor">@color/brand_primary</item>
+    </style>
+
+    <!-- Main app theme (will be overridden by Compose) -->
+    <style name="Theme.Lаstochka" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <item name="colorPrimary">@color/brand_primary</item>
+        <item name="colorPrimaryDark">@color/brand_primary_dark</item>
+        <item name="colorAccent">@color/brand_secondary</item>
+        <item name="android:windowBackground">@color/background</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:navigationBarColor">@android:color/transparent</item>
+        <item name="android:windowLightStatusBar" tools:targetApi="m">true</item>
+    </style>
+</resources>

lastochka-android-compose/app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <cache-path name="camera_images" path="." />
+    <external-cache-path name="external_camera_images" path="." />
+</paths>

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/data/SessionRepositoryTest.kt

@@ -0,0 +1,135 @@
+package ru.lastochka.messenger.data
+
+import io.mockk.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.test.*
+import org.junit.*
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import ru.lastochka.messenger.service.NetworkMonitor
+
+/**
+ * Тесты для SessionRepository.
+ * Проверяем auth операции и состояния.
+ * 
+ * Примечание: DataStore мокается через relaxed mock,
+ * поэтому тесты фокусируются на auth логике.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28])
+class SessionRepositoryTest {
+
+    private val testDispatcher = UnconfinedTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private lateinit var tinodeClient: TinodeClient
+    private lateinit var networkMonitor: NetworkMonitor
+
+    @Before
+    fun setup() {
+        Dispatchers.setMain(testDispatcher)
+        
+        tinodeClient = mockk(relaxed = true)
+        networkMonitor = mockk(relaxed = true)
+        
+        every { networkMonitor.isConnected } returns MutableStateFlow(true)
+    }
+
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+    }
+
+    @Test
+    fun `TinodeClient myUid returns correct value`() = testScope.runTest {
+        every { tinodeClient.myUid } returns "usrTestUid"
+
+        Assert.assertEquals("usrTestUid", tinodeClient.myUid)
+    }
+
+    @Test
+    fun `TinodeClient connectionState is observable`() = testScope.runTest {
+        val connectionStateFlow = MutableStateFlow(TinodeConnState.Connected)
+        every { tinodeClient.connectionState } returns connectionStateFlow
+
+        val state = connectionStateFlow.value
+        Assert.assertEquals(TinodeConnState.Connected, state)
+    }
+
+    @Test
+    fun `AuthState sealed class works correctly`() = testScope.runTest {
+        // Test Unauthenticated
+        val unauth: AuthState = AuthState.Unauthenticated
+        Assert.assertTrue(unauth is AuthState.Unauthenticated)
+
+        // Test Authenticated
+        val auth: AuthState = AuthState.Authenticated("usr123")
+        Assert.assertTrue(auth is AuthState.Authenticated)
+        Assert.assertEquals("usr123", (auth as AuthState.Authenticated).uid)
+
+        // Test SessionExpired
+        val expired: AuthState = AuthState.SessionExpired
+        Assert.assertTrue(expired is AuthState.SessionExpired)
+    }
+
+    @Test
+    fun `TinodeConnState enum works correctly`() = testScope.runTest {
+        val states = listOf(
+            TinodeConnState.Disconnected,
+            TinodeConnState.Connecting,
+            TinodeConnState.Connected,
+            TinodeConnState.Authenticated,
+            TinodeConnState.Error
+        )
+
+        Assert.assertEquals(5, states.size)
+    }
+
+    @Test
+    fun `login result can be checked`() = testScope.runTest {
+        coEvery { tinodeClient.login("user", "pass") } returns Result.success(Unit)
+
+        val result = tinodeClient.login("user", "pass")
+        Assert.assertTrue(result.isSuccess)
+    }
+
+    @Test
+    fun `login failure can be checked`() = testScope.runTest {
+        val error = Exception("Неверный пароль")
+        coEvery { tinodeClient.login("user", "wrong") } returns Result.failure<Unit>(error)
+
+        val result = tinodeClient.login("user", "wrong")
+        Assert.assertTrue(result.isFailure)
+        Assert.assertEquals("Неверный пароль", result.exceptionOrNull()?.message)
+    }
+
+    @Test
+    fun `register result can be checked`() = testScope.runTest {
+        coEvery { tinodeClient.register("new", "pass", "New") } returns Result.success(Unit)
+
+        val result = tinodeClient.register("new", "pass", "New")
+        Assert.assertTrue(result.isSuccess)
+    }
+
+    @Test
+    fun `autoLogin result can be checked`() = testScope.runTest {
+        coEvery { tinodeClient.autoLogin() } returns Result.success(Unit)
+
+        val result = tinodeClient.autoLogin()
+        Assert.assertTrue(result.isSuccess)
+    }
+
+    @Test
+    fun `logout can be called`() = testScope.runTest {
+        coEvery { tinodeClient.logout() } just Runs
+
+        tinodeClient.logout()
+
+        coVerify { tinodeClient.logout() }
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/data/local/ContactDaoTest.kt

@@ -0,0 +1,115 @@
+package ru.lastochka.messenger.data.local
+
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import org.junit.*
+
+/**
+ * Тесты для ContactDao.
+ */
+class ContactDaoTest {
+
+    @Test
+    fun insertAndReadContact() = runBlocking {
+        val contact = ContactEntity(
+            topicName = "usrABC123",
+            displayName = "Иван Иванов",
+            avatar = null,
+            lastMessage = "Привет!",
+            lastMessageTime = System.currentTimeMillis(),
+            unread = 1,
+            isGroup = false,
+            muted = false,
+            pinned = false
+        )
+
+        Assert.assertEquals("usrABC123", contact.topicName)
+        Assert.assertEquals("Иван Иванов", contact.displayName)
+        Assert.assertEquals(1, contact.unread)
+    }
+
+    @Test
+    fun clearUnread() = runBlocking {
+        val contact = ContactEntity(
+            topicName = "usrABC123",
+            displayName = "Иван",
+            avatar = null,
+            lastMessage = null,
+            lastMessageTime = System.currentTimeMillis(),
+            unread = 5,
+            isGroup = false,
+            muted = false,
+            pinned = false
+        )
+
+        Assert.assertEquals(5, contact.unread)
+        // После clearUnread: unread = 0
+    }
+
+    @Test
+    fun contactIsGroup() = runBlocking {
+        val group = ContactEntity(
+            topicName = "grpXYZ789",
+            displayName = "Рабочий чат",
+            avatar = null,
+            lastMessage = null,
+            lastMessageTime = System.currentTimeMillis(),
+            unread = 0,
+            isGroup = true,
+            muted = false,
+            pinned = false
+        )
+
+        val p2p = ContactEntity(
+            topicName = "usrABC123",
+            displayName = "Иван",
+            avatar = null,
+            lastMessage = null,
+            lastMessageTime = System.currentTimeMillis(),
+            unread = 0,
+            isGroup = false,
+            muted = false,
+            pinned = false
+        )
+
+        Assert.assertTrue(group.isGroup)
+        Assert.assertFalse(p2p.isGroup)
+        Assert.assertTrue(group.topicName.startsWith("grp"))
+    }
+
+    @Test
+    fun mutedContact() = runBlocking {
+        val contact = ContactEntity(
+            topicName = "usrABC123",
+            displayName = "Спам",
+            avatar = null,
+            lastMessage = null,
+            lastMessageTime = System.currentTimeMillis(),
+            unread = 100,
+            isGroup = false,
+            muted = true,
+            pinned = false
+        )
+
+        Assert.assertTrue(contact.muted)
+        Assert.assertEquals(100, contact.unread)
+    }
+
+    @Test
+    fun pinnedContact() = runBlocking {
+        val pinned = ContactEntity(
+            topicName = "usrABC123",
+            displayName = "Босс",
+            avatar = null,
+            lastMessage = null,
+            lastMessageTime = 1000,
+            unread = 0,
+            isGroup = false,
+            muted = false,
+            pinned = true
+        )
+
+        Assert.assertTrue(pinned.pinned)
+        // Pinned контакты должны идти первыми в списке
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/data/local/MessageDaoTest.kt

@@ -0,0 +1,140 @@
+package ru.lastochka.messenger.data.local
+
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import org.junit.*
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import java.io.IOException
+
+/**
+ * Тесты для MessageDao.
+ * Тестируем вставку, чтение, удаление и обновление сообщений.
+ */
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28])
+class MessageDaoTest {
+    private lateinit var database: AppDatabase
+    private lateinit var dao: MessageDao
+
+    @Before
+    fun createDb() {
+        // Используем in-memory базу для тестов
+        // Примечание: Room.inMemoryDatabaseBuilder требует контекста
+        // Для unit-тестов используем заглушку
+        // В реальных тестах использовать Android instrumented tests
+    }
+
+    @After
+    @Throws(IOException::class)
+    fun closeDb() {
+        // database.close()
+    }
+
+    @Test
+    fun insertAndReadMessage() = runBlocking {
+        // Для unit-тестов без Android — проверяем логику
+        val entity = MessageEntity(
+            seqId = 1,
+            topicName = "usrABC123",
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Привет!",
+            rawContent = "Привет!",
+            timestamp = System.currentTimeMillis(),
+            isOwn = false,
+            isRead = false,
+            isEdited = false,
+            hasAttachment = false,
+            attachmentType = null,
+            attachmentUrl = null
+        )
+
+        // В реальном instrumented тесте:
+        // dao.insertMessage(entity)
+        // val messages = dao.getMessagesForTopic("usrABC123").first()
+        // Assert.assertEquals(1, messages.size)
+        Assert.assertEquals("Привет!", entity.content)
+        Assert.assertFalse(entity.isOwn)
+    }
+
+    @Test
+    fun markAllRead() = runBlocking {
+        // Проверка логики: markAllRead устанавливает isRead = true
+        val entity = MessageEntity(
+            seqId = 1,
+            topicName = "usrABC123",
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Тест",
+            rawContent = "Тест",
+            timestamp = System.currentTimeMillis(),
+            isOwn = false,
+            isRead = false,
+            isEdited = false,
+            hasAttachment = false,
+            attachmentType = null,
+            attachmentUrl = null
+        )
+
+        // После markAllRead: isRead = true
+        Assert.assertFalse(entity.isRead)
+        // После вызова DAO: entity.isRead должно стать true
+    }
+
+    @Test
+    fun deleteMessageBySeqId() = runBlocking {
+        // Проверка: удаление по seqId работает
+        val entity = MessageEntity(
+            seqId = 42,
+            topicName = "usrABC123",
+            from = "me",
+            senderName = "",
+            content = "Удали меня",
+            rawContent = "Удали меня",
+            timestamp = System.currentTimeMillis(),
+            isOwn = true,
+            isRead = false,
+            isEdited = false,
+            hasAttachment = false,
+            attachmentType = null,
+            attachmentUrl = null
+        )
+
+        Assert.assertEquals(42, entity.seqId)
+        Assert.assertTrue(entity.isOwn)
+    }
+
+    @Test
+    fun getMaxSeq() = runBlocking {
+        // Проверка: getMaxSeq возвращает максимальный seqId
+        // При пустой таблице — null
+        // После вставки сообщений с seqId 1, 2, 3 — возвращает 3
+    }
+
+    @Test
+    fun messageWithReply() = runBlocking {
+        // Проверка: сообщение с replyToContent сохраняется
+        val entity = MessageEntity(
+            seqId = 5,
+            topicName = "usrABC123",
+            from = "me",
+            senderName = "",
+            content = "Ответ",
+            rawContent = "Ответ",
+            timestamp = System.currentTimeMillis(),
+            isOwn = true,
+            isRead = false,
+            isEdited = false,
+            hasAttachment = false,
+            attachmentType = null,
+            attachmentUrl = null,
+            replyToSeq = 3,
+            replyToContent = "Оригинальное сообщение"
+        )
+
+        Assert.assertEquals(3, entity.replyToSeq)
+        Assert.assertEquals("Оригинальное сообщение", entity.replyToContent)
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/util/RetryWithBackoffTest.kt

@@ -0,0 +1,150 @@
+package ru.lastochka.messenger.util
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.*
+import org.junit.Test
+
+/**
+ * Тесты для retryWithBackoff утилиты.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+class RetryWithBackoffTest {
+
+    @Test
+    fun `success on first attempt returns result`() = runTest {
+        var callCount = 0
+        val result = retryWithBackoff(maxRetries = 3, initialDelayMs = 10L) {
+            callCount++
+            "success"
+        }
+
+        assertTrue(result.isSuccess)
+        assertEquals("success", result.getOrNull())
+        assertEquals(1, callCount)
+    }
+
+    @Test
+    fun `retries on failure and eventually succeeds`() = runTest {
+        var callCount = 0
+        val result = retryWithBackoff(maxRetries = 3, initialDelayMs = 10L) {
+            callCount++
+            if (callCount < 3) {
+                throw RuntimeException("Temporary error")
+            }
+            "success"
+        }
+
+        assertTrue(result.isSuccess)
+        assertEquals("success", result.getOrNull())
+        assertEquals(3, callCount)
+    }
+
+    @Test
+    fun `fails after max retries exhausted`() = runTest {
+        var callCount = 0
+        val result = retryWithBackoff(maxRetries = 2, initialDelayMs = 10L) {
+            callCount++
+            throw RuntimeException("Persistent error")
+        }
+
+        assertTrue(result.isFailure)
+        assertEquals("Persistent error", result.exceptionOrNull()?.message)
+        // 1 начальная попытка + 2 retry = 3 total
+        assertEquals(3, callCount)
+    }
+
+    @Test
+    fun `shouldRetry predicate can stop retries`() = runTest {
+        var callCount = 0
+        // Простой тест — shouldRetry = false сразу останавливает
+        val result = retryWithBackoff(
+            maxRetries = 5,
+            initialDelayMs = 10L,
+            shouldRetry = { false } // Никогда не retry
+        ) {
+            callCount++
+            throw RuntimeException("Error")
+        }
+
+        assertTrue(result.isFailure)
+        // Только 1 попыка — no retries
+        assertEquals(1, callCount)
+    }
+
+    @Test
+    fun `RetryPolicy Quick has fewer retries`() = runTest {
+        var callCount = 0
+        val result = RetryPolicy.Quick {
+            callCount++
+            throw RuntimeException("Error")
+        }
+
+        assertTrue(result.isFailure)
+        // Quick: maxRetries = 2, так что 3 попытки total
+        assertEquals(3, callCount)
+    }
+
+    @Test
+    fun `RetryPolicy Network has standard retries`() = runTest {
+        var callCount = 0
+        val result = RetryPolicy.Network {
+            callCount++
+            throw RuntimeException("Error")
+        }
+
+        assertTrue(result.isFailure)
+        // Network: maxRetries = 3, так что 4 попытки total
+        assertEquals(4, callCount)
+    }
+
+    @Test
+    fun `RetryPolicy Conservative has more retries`() = runTest {
+        var callCount = 0
+        val result = RetryPolicy.Conservative {
+            callCount++
+            throw RuntimeException("Error")
+        }
+
+        assertTrue(result.isFailure)
+        // Conservative: maxRetries = 5, так что 6 попыток total
+        assertEquals(6, callCount)
+    }
+
+    @Test
+    fun `RetryPolicy invoke operator works`() = runTest {
+        val policy = RetryPolicy(maxRetries = 1, initialDelayMs = 10L)
+        var callCount = 0
+
+        val result = policy {
+            callCount++
+            if (callCount < 2) {
+                throw RuntimeException("Error")
+            }
+            "success"
+        }
+
+        assertTrue(result.isSuccess)
+        assertEquals(2, callCount)
+    }
+
+    @Test
+    fun `backoff delay calculation works correctly`() = runTest {
+        // Простой тест что retry происходит с задержкой
+        var callCount = 0
+        val result = retryWithBackoff(
+            maxRetries = 1,
+            initialDelayMs = 10L,
+            backoffFactor = 2.0
+        ) {
+            callCount++
+            if (callCount < 2) {
+                throw RuntimeException("Error")
+            }
+            "success"
+        }
+
+        assertTrue(result.isSuccess)
+        assertEquals(2, callCount)
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/viewmodel/AuthViewModelTest.kt

@@ -0,0 +1,144 @@
+package ru.lastochka.messenger.viewmodel
+
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.mockk
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.*
+import org.junit.*
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import ru.lastochka.messenger.data.SessionRepository
+
+/**
+ * Тесты для AuthViewModel.
+ * Проверяем login, register, validation.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28])
+class AuthViewModelTest {
+
+    private val testDispatcher = UnconfinedTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private lateinit var sessionRepository: SessionRepository
+    private lateinit var viewModel: AuthViewModel
+
+    @Before
+    fun setup() {
+        Dispatchers.setMain(testDispatcher)
+        sessionRepository = mockk(relaxed = true)
+        viewModel = AuthViewModel(sessionRepository)
+    }
+
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+    }
+
+    @Test
+    fun `login success changes state to Success`() = testScope.runTest {
+        coEvery { sessionRepository.login("testuser", "password123") } returns Result.success(Unit)
+
+        viewModel.login("testuser", "password123")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Success)
+    }
+
+    @Test
+    fun `login failure changes state to Error`() = testScope.runTest {
+        val error = Exception("Нет подключения к серверу")
+        coEvery { sessionRepository.login("testuser", "password123") } returns Result.failure<Unit>(error)
+
+        viewModel.login("testuser", "password123")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Error)
+        Assert.assertEquals("Нет подключения к серверу", (state as AuthUiState.Error).message)
+    }
+
+    @Test
+    fun `register success changes state to Success`() = testScope.runTest {
+        coEvery { sessionRepository.register("newuser", "password123", "New User") } returns Result.success(Unit)
+
+        viewModel.register("newuser", "password123", "New User")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Success)
+    }
+
+    @Test
+    fun `register failure changes state to Error`() = testScope.runTest {
+        coEvery {
+            sessionRepository.register("existing", "password123", "Existing")
+        } returns Result.failure<Unit>(Exception("User already exists"))
+
+        viewModel.register("existing", "password123", "Existing")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Error)
+    }
+
+    @Test
+    fun `register with full profile success`() = testScope.runTest {
+        coEvery {
+            sessionRepository.registerWithFullProfile("user", "pass", "User", "user@test.com", "+79001234567")
+        } returns Result.success(Unit)
+
+        viewModel.registerWithFullProfile("user", "pass", "User", "user@test.com", "+79001234567")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Success)
+    }
+
+    @Test
+    fun `reset state returns Idle`() = testScope.runTest {
+        coEvery { sessionRepository.login("user", "pass") } returns Result.failure(Exception("Error"))
+        viewModel.login("user", "pass")
+
+        Assert.assertTrue(viewModel.uiState.value is AuthUiState.Error)
+
+        viewModel.resetState()
+
+        Assert.assertTrue(viewModel.uiState.value is AuthUiState.Idle)
+    }
+
+    @Test
+    fun `check username availability`() = testScope.runTest {
+        coEvery { sessionRepository.tinodeClient.checkUsername("freeuser") } returns Result.success(true)
+
+        var result: Boolean? = null
+        viewModel.checkUsername("freeuser") { isAvailable ->
+            result = isAvailable
+        }
+
+        Assert.assertTrue(result == true)
+    }
+
+    @Test
+    fun `check username taken`() = testScope.runTest {
+        coEvery { sessionRepository.tinodeClient.checkUsername("taken") } returns Result.success(false)
+
+        var result: Boolean? = null
+        viewModel.checkUsername("taken") { isAvailable ->
+            result = isAvailable
+        }
+
+        Assert.assertFalse(result == true)
+    }
+
+    @Test
+    fun `empty password login returns error`() = testScope.runTest {
+        // ViewModel отправляет пустой пароль — сервер вернёт ошибку
+        coEvery { sessionRepository.login("", "") } returns Result.failure<Unit>(Exception("Ошибка входа"))
+
+        viewModel.login("", "")
+
+        val state = viewModel.uiState.value
+        Assert.assertTrue(state is AuthUiState.Error)
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/viewmodel/ChatListViewModelTest.kt

@@ -0,0 +1,105 @@
+package ru.lastochka.messenger.viewmodel
+
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.every
+import io.mockk.just
+import io.mockk.mockk
+import io.mockk.runs
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.test.*
+import org.junit.*
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import ru.lastochka.messenger.data.AuthState
+import ru.lastochka.messenger.data.ChatRepository
+import ru.lastochka.messenger.data.ContactInfo
+import ru.lastochka.messenger.data.TinodeConnState
+import ru.lastochka.messenger.data.TinodeEvent
+import ru.lastochka.messenger.data.model.MetaSub
+
+/**
+ * Тесты для ChatListViewModel.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28])
+class ChatListViewModelTest {
+
+    private val testDispatcher = UnconfinedTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private lateinit var repository: ChatRepository
+    private lateinit var viewModel: ChatListViewModel
+
+    @Before
+    fun setup() {
+        Dispatchers.setMain(testDispatcher)
+        repository = mockk(relaxed = true)
+    }
+
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+    }
+
+    @Test
+    fun `contacts load on init`() = testScope.runTest {
+        val theCard = ru.lastochka.messenger.data.model.TheCard(fn = "Иван")
+        val subs = listOf(
+            MetaSub(
+                user = "usrABC",
+                topic = "usrABC",
+                `public` = theCard
+            )
+        )
+        val contacts = listOf(ContactInfo(topicName = "usrABC", displayName = "Иван"))
+
+        coEvery { repository.getMeTopic() } returns subs
+        coEvery { repository.getContactsFromSubs(any()) } returns contacts
+        coEvery { repository.hasSavedToken() } returns false
+        every { repository.events } returns MutableSharedFlow()
+
+        viewModel = ChatListViewModel(repository)
+
+        // Проверяем что contacts были загружены
+        coVerify { repository.getMeTopic() }
+    }
+
+    @Test
+    fun `search query filters contacts`() = testScope.runTest {
+        val contacts = listOf(
+            ContactInfo(topicName = "usr1", displayName = "Иван"),
+            ContactInfo(topicName = "usr2", displayName = "Мария"),
+            ContactInfo(topicName = "usr3", displayName = "Алексей")
+        )
+
+        coEvery { repository.getMeTopic() } returns emptyList()
+        coEvery { repository.hasSavedToken() } returns false
+        every { repository.events } returns MutableSharedFlow()
+
+        viewModel = ChatListViewModel(repository)
+
+        // Проверяем логику фильтрации
+        val filtered = contacts.filter { it.displayName.contains("иван", ignoreCase = true) }
+        Assert.assertEquals(1, filtered.size)
+        Assert.assertEquals("Иван", filtered[0].displayName)
+    }
+
+    @Test
+    fun `session expired triggers logout`() = testScope.runTest {
+        coEvery { repository.getMeTopic() } returns emptyList()
+        coEvery { repository.hasSavedToken() } returns true
+        coEvery { repository.logout() } just runs
+        every { repository.events } returns MutableSharedFlow()
+
+        viewModel = ChatListViewModel(repository)
+
+        // При пустых subs и наличии токена — logout
+        coVerify { repository.getMeTopic() }
+        coVerify { repository.hasSavedToken() }
+    }
+}

lastochka-android-compose/app/src/test/java/ru/lastochka/messenger/viewmodel/ChatViewModelTest.kt

@@ -0,0 +1,255 @@
+package ru.lastochka.messenger.viewmodel
+
+import io.mockk.*
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.test.*
+import org.junit.*
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+import ru.lastochka.messenger.data.*
+import ru.lastochka.messenger.data.local.AppDatabase
+import ru.lastochka.messenger.data.local.MessageDao
+import ru.lastochka.messenger.data.model.DataPacket
+import ru.lastochka.messenger.data.model.PubContent
+import java.util.*
+
+/**
+ * Тесты для ChatViewModel.
+ * Проверяем отправку сообщений, receive, typing, delete, reply.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [28])
+class ChatViewModelTest {
+
+    private val testDispatcher = UnconfinedTestDispatcher()
+    private val testScope = TestScope(testDispatcher)
+
+    private lateinit var context: android.content.Context
+    private lateinit var repository: ChatRepository
+    private lateinit var database: AppDatabase
+    private lateinit var messageDao: MessageDao
+    private lateinit var viewModel: ChatViewModel
+
+    private val eventsFlow = MutableSharedFlow<TinodeEvent>(extraBufferCapacity = 8)
+
+    @Before
+    fun setup() {
+        Dispatchers.setMain(testDispatcher)
+        context = mockk(relaxed = true)
+        repository = mockk(relaxed = true)
+        database = mockk(relaxed = true)
+        messageDao = mockk(relaxed = true)
+
+        every { database.messageDao() } returns messageDao
+        coEvery { messageDao.getMessagesForTopic(any()) } returns flowOf(emptyList())
+        coEvery { repository.getTopicTitle(any()) } returns "Test Chat"
+        every { repository.events } returns eventsFlow
+        coEvery { repository.subscribeTopic(any()) } returns Result.success(Unit)
+
+        // Mock SavedStateHandle без Android зависимости
+        val savedStateHandle = createSavedStateHandle()
+        viewModel = ChatViewModel(context, repository, database, savedStateHandle)
+    }
+
+    private fun createSavedStateHandle(): androidx.lifecycle.SavedStateHandle {
+        return androidx.lifecycle.SavedStateHandle(mapOf("topicName" to "usrABC123"))
+    }
+
+    @After
+    fun tearDown() {
+        Dispatchers.resetMain()
+    }
+
+    @Test
+    fun `send message adds to local DB`() = testScope.runTest {
+        coEvery { messageDao.insertMessage(any()) } returns Unit
+
+        viewModel.sendMessage("Привет!")
+
+        coVerify { messageDao.insertMessage(match { it.content == "Привет!" && it.isOwn }) }
+    }
+
+    @Test
+    fun `send empty message does nothing`() = testScope.runTest {
+        viewModel.sendMessage("")
+        viewModel.sendMessage("   ")
+
+        coVerify(exactly = 0) { messageDao.insertMessage(any()) }
+    }
+
+    @Test
+    fun `receive message from server`() = testScope.runTest {
+        val dataPacket = DataPacket(
+            topic = "usrABC123",
+            from = "usrDEF456",
+            seq = 10,
+            content = PubContent(txt = "Ответ от сервера"),
+            ts = "2026-04-03T12:00:00.000Z"
+        )
+
+        eventsFlow.emit(TinodeEvent.NewMessage(dataPacket))
+
+        // Сообщение должно быть сохранено в DB
+        coVerify { messageDao.insertMessage(any()) }
+    }
+
+    @Test
+    fun `typing indicator sent`() = testScope.runTest {
+        every { repository.sendTyping(any()) } just Runs
+
+        viewModel.sendTyping()
+
+        verify { repository.sendTyping("usrABC123") }
+    }
+
+    @Test
+    fun `delete message removes from DB`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 5,
+            from = "me",
+            senderName = "",
+            content = "Удали меня",
+            timestamp = Date(),
+            isOwn = true,
+            isRead = false,
+            isEdited = false
+        )
+
+        coEvery { repository.deleteMessage(any(), any()) } returns Result.success(Unit)
+        coEvery { messageDao.deleteMessageBySeqId(any()) } returns Unit
+
+        viewModel.onMessageLongClick(message)
+        viewModel.executeAction(MessageActionType.DELETE)
+
+        coVerify { messageDao.deleteMessageBySeqId(5) }
+    }
+
+    @Test
+    fun `delete non-own message does nothing`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 5,
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Не удаляй",
+            timestamp = Date(),
+            isOwn = false,
+            isRead = true,
+            isEdited = false
+        )
+
+        viewModel.onMessageLongClick(message)
+        viewModel.executeAction(MessageActionType.DELETE)
+
+        coVerify(exactly = 0) { messageDao.deleteMessageBySeqId(any()) }
+    }
+
+    @Test
+    fun `reply to message sets reply state`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 3,
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Ответь на это",
+            timestamp = Date(),
+            isOwn = false,
+            isRead = true,
+            isEdited = false
+        )
+
+        viewModel.onMessageLongClick(message)
+        viewModel.executeAction(MessageActionType.REPLY)
+
+        Assert.assertEquals(message, viewModel.replyToMessage.value)
+    }
+
+    @Test
+    fun `clear reply resets reply state`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 3,
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Тест",
+            timestamp = Date(),
+            isOwn = false,
+            isRead = true,
+            isEdited = false
+        )
+
+        viewModel.replyToMessageExternally(message)
+        Assert.assertNotNull(viewModel.replyToMessage.value)
+
+        viewModel.clearReply()
+        Assert.assertNull(viewModel.replyToMessage.value)
+    }
+
+    @Test
+    fun `copy message action clears selection`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 1,
+            from = "usrDEF456",
+            senderName = "Иван",
+            content = "Скопируй меня",
+            timestamp = Date(),
+            isOwn = false,
+            isRead = true,
+            isEdited = false
+        )
+
+        viewModel.onMessageLongClick(message)
+        Assert.assertNotNull(viewModel.selectedMessage.value)
+
+        // Copy action вызывает ClipboardManager который недоступен в unit-тестах
+        // Проверяем только что selectedMessage установлен
+        Assert.assertEquals(message, viewModel.selectedMessage.value)
+    }
+
+    @Test
+    fun `loadMoreMessages called on scroll to top`() = testScope.runTest {
+        coEvery { repository.loadMessagesBefore(any(), any(), any()) } just Runs
+
+        viewModel.loadMoreMessages()
+
+        // При пустом списке loadMoreMessages ничего не делает
+        coVerify(exactly = 0) { repository.loadMessagesBefore(any(), any(), any()) }
+    }
+
+    @Test
+    fun `markAllRead updates DB`() = testScope.runTest {
+        coEvery { messageDao.getMaxSeq(any()) } returns 10
+        coEvery { messageDao.markAllRead(any()) } returns Unit
+        every { repository.markAsRead(any(), any()) } just Runs
+
+        viewModel.markAllRead()
+
+        coVerify { messageDao.markAllRead("usrABC123") }
+        verify { repository.markAsRead("usrABC123", 10) }
+    }
+
+    @Test
+    fun `edit message updates DB`() = testScope.runTest {
+        val message = UiMessage(
+            seqId = 5,
+            from = "me",
+            senderName = "",
+            content = "Старый текст",
+            timestamp = Date(),
+            isOwn = true,
+            isRead = false,
+            isEdited = false
+        )
+
+        coEvery { repository.editMessage(any(), any(), any()) } just Runs
+        coEvery { messageDao.updateMessageContent(any(), any(), any()) } returns Unit
+
+        viewModel.onMessageLongClick(message)
+        viewModel.executeAction(MessageActionType.EDIT)
+        viewModel.editMessage(5, "Новый текст")
+
+        coVerify { messageDao.updateMessageContent(5, "Новый текст", true) }
+    }
+}