chore: версия 0.5.144 (152) + CHANGELOG сводного релиза

- Русские месяцы в шапке; нативный DatePickerDialog (material3 крашился)
- 403 при PUT события: учёт supported-calendar-component-set (VTODO-коллекции
  не принимают VEVENT) + sabre-precondition в тексте ошибки
- Окно события по _calendar-edit-full-fields.css: pill-поля, крестик, зелёная
  галочка-сохранение, нативные пикеры даты/времени, высота 94% экрана
- Talk-беседа к событию: выбор существующей / создание публичной|приватной
- Вложения (ATTACH+FILENAME/FMTTYPE): «из файлов» (WebDAV-пикер) или загрузка
  с устройства в /Calendar; round-trip при редактировании события
- Кастомное повторение (_calendar-repeat-modal.css): интервал+частота, дни
  недели кружками, окончание никогда/до даты/N раз ↔ RRULE (parse/build/описание)
- Многодневные события (endDate) и несколько напоминаний (VALARM list)
- Управление календарём (✎ в сайдбаре): PROPPATCH имя/цвет, DELETE,
  шаринг через DAV oc:invite + OCS sharees (польз./группы, чтение/редакт.)
- Discard-диалог при закрытии редактора с несохранёнными изменениями
- Занятость участников: iTIP VFREEBUSY через DAV outbox, конфликты красным

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 Формат: `ГГГГ-ММ-ДД | версия | изменение | контракты | риск`
 
+- 2026-07-10 | v0.5.144 (152) | СВОДНЫЙ РЕЛИЗ (включает непубликовавшиеся v0.5.133–143). **Whiteboard**: .whiteboard наконец открывается — реальная веб-сессия Nextcloud в WebView (login-flow app-паролем → cookie+CSRF), для web-файлов отключено OkHttp-проксирование (теряло тело POST/PROPFIND). **Календарь — большой пакет**: русские месяцы в шапке; тап по дате не крашит (нативный DatePickerDialog вместо material3); фикс 403 при создании события (учёт supported-calendar-component-set — событие не уходит в VTODO-коллекцию; в ошибках теперь sabre-precondition); окно события 1:1 с живой темой (pill-поля 40dp #FBFBFB/#E6E6E6, шапка с крестиком, зелёная галочка, высота 94% экрана); дата/время нативными пикерами; беседа Talk к событию (выбор существующей или создание публичной/приватной); вложения (ATTACH: «из файлов» с навигацией по WebDAV или загрузка с устройства в /Calendar; round-trip при редактировании); кастомное повторение (модалка: интервал+частота, кружки дней недели, окончание никогда/до даты/N раз ↔ честный RRULE); многодневные события (отдельная дата окончания); несколько напоминаний; управление календарём из сайдбара (✎: переименование, цвет, шаринг пользователям/группам через DAV oc:invite + OCS sharees, удаление с подтверждением; подписки read-only); discard-диалог при закрытии с несохранёнными изменениями; занятость участников (iTIP VFREEBUSY через DAV outbox, конфликты подсвечены). **Задачи** (из 133–137): подзадачи (RELATED-TO), меню «⋯» (вложенная задача/удаление), стрелка панели открывает списки, кэш ускоряет загрузку. **Файлы** (из 133–137): .md в нативном редакторе (WebDAV load/save + предпросмотр), прогрев WebView для docx/xlsx. **Меню**: иконки шторки в белых круглых рамках с тенью, единый размер. Push/звонки: 30-с таймаут → «Пропущенный звонок» (обезличенно на локскрине) | +NextcloudWebSession (POST /login); CalDAV: PROPPATCH/DELETE/share на календарях, POST outbox (VFREEBUSY), ATTACH в VEVENT; OCS: sharees, cloud/user(email), spreed room list | средний: пишущие операции календаря (шаринг/удаление/free-busy/вложения) проверены компиляцией, на устройстве не гонялись
+
 - 2026-07-10 | v0.5.128 (136) | Фиксы по отчёту владельца. (1) Иконки шторки: были glass-кружки, стали ПЛОСКИЕ menu-иконки живой темы (images/menu/*.svg — зелёный+чёрный контур), 1:1 с мобильным сайтом. (2) Левая стрелка нижней панели больше не мёртвая на Карточках/Конференциях/Контактах/Задачах — работает как «назад» к предыдущему разделу (для Почты/Файлов/Календаря по-прежнему тумблер папок). (3) Deck GET-запросы возвращены к прежнему рабочему виду (без OCS-заголовка) — исключён риск регресса чтения досок. Напоминание: основной новый функционал Карточек — ВНУТРИ доски (колонки, карточки, деталь с правкой/перемещением/метками/сроком) | контракты не менялись | низкий
 
 - 2026-07-10 | v0.5.127 (135) | Меню и Карточки. **Меню 1:1 по живому forbion:** шторка приложений (по «трём полоскам») без скругления верха и ручки, высота по контенту почти на весь экран, сетка 3 кол. gap 8, иконки-glass локально (офлайн); нижняя панель — плавающая пилюля 328×61, кнопки 55 (#FBFBFB/рамка #E6E6E6), возвращена подсветка активного раздела и открытого бургера (полупрозрачный зелёный градиент). **Карточки (Deck) — полный функционал** (было только чтение): доска с колонками-стеками, карточки с метками/сроком/исполнителями/чекбоксом; карточка-деталь (правка названия/описания, срок через пикер, done, метки доски, перемещение в колонку, архив, удаление); создание карточек и колонок; учёт прав PERMISSION_EDIT. Всё через внутренний Deck API — общее с веб-версией | Deck API /api/v1.0 (write) | средний: пишущие операции Deck не тестировались на устройстве — проверить создание/правку/перемещение

app/build.gradle

@@ -39,8 +39,8 @@ android {
         applicationId 'ru.forbion.f7cloud.mobile'
         minSdk 26
         targetSdk 36
-        versionCode 137
-        versionName '0.5.129'
+        versionCode 152
+        versionName '0.5.144'
         missingDimensionStrategy 'default', 'f7'
         multiDexEnabled true
 

app/src/main/java/ru/forbion/f7cloud/mobile/F7MobileApp.kt

@@ -77,7 +77,31 @@ class F7MobileApp : F7cloudTalkApplication(), ImageLoaderFactory {
     }
 
     override fun newImageLoader(): ImageLoader {
+        // OkHttp с Basic-auth для хоста сервера: серверные картинки (иконки внешних сайтов
+        // /apps/external/img, превью и т.п.) требуют логина — без заголовка coil ловит 401.
+        val authedClient = okhttp3.OkHttpClient.Builder()
+            .addInterceptor { chain ->
+                val request = chain.request()
+                val session = runCatching { AuthStore(this).load() }.getOrNull()
+                val serverHost = session?.serverUrl?.let {
+                    runCatching { android.net.Uri.parse(it).host }.getOrNull()
+                }
+                val patched = if (session != null && serverHost != null && request.url.host == serverHost) {
+                    request.newBuilder()
+                        .header(
+                            "Authorization",
+                            okhttp3.Credentials.basic(session.username, session.appPassword),
+                        )
+                        .header("OCS-APIRequest", "true")
+                        .build()
+                } else {
+                    request
+                }
+                chain.proceed(patched)
+            }
+            .build()
         return ImageLoader.Builder(this)
+            .okHttpClient(authedClient)
             .components { add(SvgDecoder.Factory()) }
             .crossfade(false)
             .memoryCache {

app/src/main/java/ru/forbion/f7cloud/mobile/OfficeEditorActivity.kt

@@ -40,12 +40,17 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import okhttp3.OkHttpClient
 import ru.forbion.f7cloud.core.designsystem.F7Colors
 import ru.forbion.f7cloud.core.designsystem.F7PrimaryButton
 import ru.forbion.f7cloud.core.designsystem.F7Theme
 import ru.forbion.f7cloud.core.network.NetworkFactory
+import ru.forbion.f7cloud.core.network.NextcloudWebSession
 import ru.forbion.f7cloud.feature.files.OfficeEditorLaunch
 
 class OfficeEditorActivity : ComponentActivity() {
@@ -200,7 +205,55 @@ class OfficeEditorActivity : ComponentActivity() {
         if (current == next) return
         editorVisible = false
         loadError = null
+        startLoad(view, target)
+    }
+
+    /**
+     * Collabora — грузим сразу (iframe самодостаточен по WOPI-токену). Web-viewer (доска и пр.)
+     * требует НАСТОЯЩУЮ веб-сессию: сначала логинимся app-паролем, переносим cookie в
+     * WebView CookieManager, только потом открываем URL — иначе viewer видит анонима («нет файлов»).
+     */
+    private fun startLoad(view: WebView, target: OfficeEditorLaunch) {
+        if (target.collaboraBaseUrl.isNotBlank()) {
             view.loadUrl(target.url)
+            return
+        }
+        lifecycleScope.launch {
+            val ok = runCatching { establishWebSession(target) }.getOrDefault(false)
+            if (!ok) {
+                loadError = "Не удалось открыть сессию. Проверьте интернет и попробуйте снова."
+                return@launch
+            }
+            view.loadUrl(target.url)
+        }
+    }
+
+    /** Логин по форме `/login`, перенос session-cookie в WebView. Возвращает true при успехе. */
+    private suspend fun establishWebSession(target: OfficeEditorLaunch): Boolean {
+        val serverUrl = target.serverUrl.ifBlank { target.url }
+        val cookies = withContext(Dispatchers.IO) {
+            NextcloudWebSession.login(
+                serverUrl = serverUrl,
+                username = target.username,
+                appPassword = target.password,
+                trustAllCerts = target.trustAllCerts,
+            )
+        }
+        if (cookies.isEmpty()) return false
+        val cm = CookieManager.getInstance()
+        cm.setAcceptCookie(true)
+        webViewRef?.let { cm.setAcceptThirdPartyCookies(it, true) }
+        val base = serverUrl.trimEnd('/')
+        cookies.forEach { c ->
+            val attrs = buildString {
+                append("${c.name}=${c.value}; Path=${c.path}")
+                if (c.secure) append("; Secure")
+                if (c.httpOnly) append("; HttpOnly")
+            }
+            cm.setCookie(base, attrs)
+        }
+        withContext(Dispatchers.IO) { cm.flush() }
+        return true
     }
 
     private fun readLaunch(): OfficeEditorLaunch? {
@@ -250,7 +303,7 @@ class OfficeEditorActivity : ComponentActivity() {
                     val current = webView.url?.trimEnd('/').orEmpty()
                     val target = launch.url.trimEnd('/')
                     if (current != target) {
-                        webView.loadUrl(launch.url)
+                        startLoad(webView, launch)
                     }
                 }
             },
@@ -346,7 +399,14 @@ class OfficeEditorActivity : ComponentActivity() {
         },
         onPageReady = { view ->
             runOnUiThread {
+                if (launch.collaboraBaseUrl.isNotBlank()) {
                     view?.evaluateJavascript(HIDE_F7CLOUD_CHROME_JS, null)
+                } else {
+                    // Web-файлы (whiteboard и пр.): Collabora-моста нет — готовность = загрузка
+                    // страницы; chrome НЕ прячем (иначе снесётся весь контейнер приложения).
+                    editorVisible = true
+                    loadError = null
+                }
             }
         },
     )

app/src/main/java/ru/forbion/f7cloud/mobile/OfficeWebViewClient.kt

@@ -23,12 +23,17 @@ internal class OfficeWebViewClient(
     private val onPageReady: (WebView?) -> Unit,
 ) : WebViewClient() {
 
+    // Скрытие chrome forbion — ТОЛЬКО для Collabora-страницы (там документ в отдельном
+    // #documents-content). На Files-странице (whiteboard и пр.) этот скрипт сносит #body-user
+    // = весь контейнер приложения → белый экран. Поэтому для web-файлов не инжектим.
+    private val hideChrome: Boolean get() = launch.collaboraBaseUrl.isNotBlank()
+
     override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
-        view?.evaluateJavascript(OfficeEditorActivity.HIDE_F7CLOUD_CHROME_JS, null)
+        if (hideChrome) view?.evaluateJavascript(OfficeEditorActivity.HIDE_F7CLOUD_CHROME_JS, null)
     }
 
     override fun onPageFinished(view: WebView?, url: String?) {
-        view?.evaluateJavascript(OfficeEditorActivity.HIDE_F7CLOUD_CHROME_JS, null)
+        if (hideChrome) view?.evaluateJavascript(OfficeEditorActivity.HIDE_F7CLOUD_CHROME_JS, null)
         onPageReady(view)
     }
 
@@ -123,11 +128,10 @@ internal class OfficeWebViewClient(
         }
 
         fun buildInterceptPrefixes(launch: OfficeEditorLaunch): List<String> {
-            val prefixes = mutableListOf(launch.serverUrl.trimEnd('/'))
-            if (launch.collaboraBaseUrl.isNotBlank()) {
-                prefixes += launch.collaboraBaseUrl.trimEnd('/')
-            }
-            return prefixes.distinct()
+            // Web-файлы (whiteboard): НЕ проксируем — WebView ходит нативно по веб-сессии
+            // (cookie+CSRF). Проксирование через OkHttp теряло тело POST/PROPFIND → пустой Files.
+            if (launch.collaboraBaseUrl.isBlank()) return emptyList()
+            return listOf(launch.serverUrl.trimEnd('/'), launch.collaboraBaseUrl.trimEnd('/')).distinct()
         }
     }
 }

app/src/main/java/ru/forbion/f7cloud/mobile/ui/AppMenuRepository.kt

@@ -48,7 +48,7 @@ object AppMenuRepository {
                     }
                     AppMenuExternalSite(
                         name = name,
-                        iconUrl = icon ?: defaultExternalIcon(session.serverUrl, name),
+                        iconUrl = resolveExternalIcon(session.serverUrl, icon, name),
                         openUrl = openUrl,
                     )
                 }
@@ -56,12 +56,18 @@ object AppMenuRepository {
         }.getOrDefault(emptyList())
     }
 
-    private fun defaultExternalIcon(serverUrl: String, name: String): String {
+    /**
+     * Иконка внешнего сайта. API external отдаёт `icon` как ИМЯ ФАЙЛА (напр. «bitrix24.png»),
+     * а не URL — сайт грузит его с `/apps/external/img/{icon}` (см. layout.user.php). Раньше
+     * имя файла бралось как есть → битая ссылка → глобус-заглушка у Bitrix/1C.
+     */
+    private fun resolveExternalIcon(serverUrl: String, icon: String?, name: String): String {
         val base = serverUrl.trimEnd('/')
         return when {
-            name.contains("bitrix", ignoreCase = true) -> "$base/themes/forbion/images/header/bitrix-glass.svg"
-            name.contains("1c", ignoreCase = true) -> "$base/themes/forbion/images/header/1c-glass.svg"
-            else -> "$base/index.php/apps/external/img/external.svg"
+            icon.isNullOrBlank() -> "$base/index.php/apps/external/img/external.svg"
+            icon.startsWith("http") -> icon
+            icon.startsWith("/") -> "$base$icon"
+            else -> "$base/index.php/apps/external/img/$icon"
         }
     }
 }

app/src/main/java/ru/forbion/f7cloud/mobile/ui/AppNavigation.kt

@@ -35,13 +35,16 @@ private data class AppMenuEntry(
 
 // Состав меню — по дизайну выдвижного меню (Почта/Конференции/Задачи/Поддержка — только
 // в нижней панели; Уведомления/Настройки добавлены как нативные пункты, см. appMenuItems).
-// iconPath — базовое имя плоской menu-иконки (assets/menu/menu-<name>.svg)
+// iconPath — базовое имя плоской menu-иконки (assets/menu/menu-<name>.svg).
+// Состав/порядок 1:1 со шторкой сайта: Файлы·Календарь·Контакты·Карточки·Заметки·Поддержка
+// (Почта/Задачи/Конференции не тут — они в нижней панели).
 private val coreAppMenuEntries = listOf(
     AppMenuEntry(AppTab.Files, "Файлы", "files"),
     AppMenuEntry(AppTab.Calendar, "Календарь", "calendar"),
     AppMenuEntry(AppTab.Contacts, "Контакты", "contacts"),
     AppMenuEntry(AppTab.Deck, "Карточки", "cards"),
     AppMenuEntry(null, "Заметки", "notes", webPath = "/apps/notes/"),
+    AppMenuEntry(AppTab.Support, "Поддержка", "support"),
 )
 
 data class AppMenuExternalSite(
@@ -74,8 +77,14 @@ fun appMenuItems(
             externalUrl = site.openUrl,
         )
     }
-    // Нативные пункты — плоские menu-иконки темы, действия по label в AppScaffold
+    // Нативные пункты — плоские menu-иконки темы, действия по label в AppScaffold.
+    // Порядок как на сайте: после внешних сайтов — Личный кабинет, затем Уведомления, Настройки.
     val native = listOf(
+        F7AppMenuItem(
+            label = "Личный кабинет",
+            iconUrl = menuIcon("lk"),
+            selected = false,
+        ),
         F7AppMenuItem(
             label = "Уведомления",
             iconUrl = menuIcon("notifications"),

app/src/main/java/ru/forbion/f7cloud/mobile/ui/AppScaffold.kt

@@ -134,6 +134,7 @@ fun AppScaffold(
     var filesUploadRequest by remember { mutableIntStateOf(0) }
     var contactsCreateRequest by remember { mutableIntStateOf(0) }
     var tasksCreateRequest by remember { mutableIntStateOf(0) }
+    var tasksShowListsRequest by remember { mutableIntStateOf(0) }
     var supportCreateRequest by remember { mutableIntStateOf(0) }
     var calendarSettingsRequest by remember { mutableIntStateOf(0) }
     var talkChatsRequest by remember { mutableIntStateOf(0) }
@@ -458,7 +459,10 @@ fun AppScaffold(
                                         AppTab.Mail -> mailSidebarOpen = !mailSidebarOpen
                                         AppTab.Calendar -> calendarSidebarOpen = !calendarSidebarOpen
                                         AppTab.Files -> filesSidebarOpen = !filesSidebarOpen
-                                        // Разделы без сайдбара (Карточки/Конференции/Контакты/Задачи/
+                                        // Задачи: стрелка открывает панель списков (закрывает
+                                        // открытый список) — как сайдбар в Почте/Файлах.
+                                        AppTab.Tasks -> tasksShowListsRequest++
+                                        // Разделы без сайдбара (Карточки/Конференции/Контакты/
                                         // Поддержка): стрелка = «назад» к предыдущему разделу.
                                         else -> popTabHistory()?.let { activeTab = it }
                                     }
@@ -566,6 +570,7 @@ fun AppScaffold(
                     modifier = contentModifier,
                     createRequest = tasksCreateRequest,
                     openListSlug = pendingTasksListSlug,
+                    showListsRequest = tasksShowListsRequest,
                     onOpenListConsumed = { pendingTasksListSlug = null },
                     onUnauthorized = forceLogout,
                 )

core/designsystem/src/main/assets/menu/menu-lk.svg

@@ -0,0 +1,17 @@
+<svg width="35" height="35" viewBox="0 0 35 35" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_205_498)">
+<path d="M35 17.5C35 22.3965 32.9889 26.823 29.748 29.999C29.7278 30.0189 29.7072 30.0387 29.6866 30.0585C29.4207 30.3164 29.1468 30.5662 28.8645 30.8073C28.3084 31.2838 27.7217 31.7251 27.1083 32.1287C24.3503 33.9441 21.0484 35 17.5 35C13.9516 35 10.6497 33.9441 7.89171 32.1287C7.27832 31.7251 6.69162 31.2838 6.13545 30.8073C5.85317 30.5662 5.57928 30.3164 5.3134 30.0585C5.2928 30.0387 5.2722 30.0189 5.25198 29.999C2.01145 26.823 0 22.3965 0 17.5C0 7.83487 7.83487 0 17.5 0C27.1651 0 35 7.83487 35 17.5Z" fill="#e5efe8"/>
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core/designsystem/src/main/assets/menu/menu-support.svg

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core/designsystem/src/main/java/ru/forbion/f7cloud/core/designsystem/F7AppMenuSheet.kt

@@ -236,32 +236,35 @@ private fun F7AppMenuGridItem(
         horizontalAlignment = Alignment.CenterHorizontally,
         verticalArrangement = Arrangement.spacedBy(8.dp),
     ) {
-        val localIcon = item.localIcon
-        if (localIcon != null) {
-            // Нативный пункт: иконка в круглом бейдже с зелёной обводкой (стиль glass)
+        // Единая круглая рамка (белый круг + рамка + мягкая тень) под КАЖДУЮ иконку —
+        // как на мобильном сайте: все иконки одного размера в кружке. Глиф внутри меньше рамки.
+        val frameShape = CircleShape
         Box(
             modifier = Modifier
                 .size(MenuIconSize)
-                    .clip(CircleShape)
+                .shadow(2.dp, frameShape, spotColor = Color(0xFFE6E6E6))
+                .clip(frameShape)
                 .background(Color.White)
-                    .border(1.5.dp, F7Colors.Green30, CircleShape),
+                .border(1.dp, Color(0xFFECECEC), frameShape),
             contentAlignment = Alignment.Center,
         ) {
+            val localIcon = item.localIcon
+            if (localIcon != null) {
                 Icon(
                     localIcon,
                     contentDescription = item.label,
                     tint = F7Colors.Primary,
-                    modifier = Modifier.size(MenuIconSize * 0.46f),
+                    modifier = Modifier.size(MenuIconSize * 0.5f),
                 )
-            }
             } else {
                 AsyncImage(
                     model = item.iconUrl,
                     contentDescription = item.label,
-                modifier = Modifier.size(MenuIconSize),
+                    modifier = Modifier.size(MenuIconSize * 0.56f),
                     contentScale = ContentScale.Fit,
                 )
             }
+        }
         Text(
             text = item.label,
             style = MaterialTheme.typography.labelLarge.copy(

core/network/src/main/java/ru/forbion/f7cloud/core/network/CalDavClient.kt

@@ -25,6 +25,10 @@ data class DavCalendar(
     // CTag коллекции (CalendarServer-расширение, Nextcloud поддерживает):
     // меняется при любом изменении в календаре → ключ инкрементального кэша событий.
     val ctag: String = "",
+    // supported-calendar-component-set: поддерживает ли коллекция VEVENT. VTODO-only списки
+    // задач не принимают события → PUT VEVENT туда возвращает 403. По умолчанию true (если
+    // сервер не вернул свойство — не ломаем поведение).
+    val supportsEvents: Boolean = true,
 )
 
 data class DavEvent(
@@ -50,6 +54,7 @@ data class DavEvent(
     val organizerName: String = "",
     val alarms: List<CalendarAlarmData> = emptyList(),
     val conferenceUri: String = "",
+    val attachments: List<CalendarAttachmentData> = emptyList(),
 )
 
 data class DavTrashEvent(
@@ -75,6 +80,8 @@ data class DavTask(
     val description: String,
     val calendarName: String,
     val calendarHref: String,
+    /** UID родительской задачи (RELATED-TO;RELTYPE=PARENT) — для подзадач; пусто у корневых. */
+    val parentUid: String = "",
 ) {
     val isCompleted: Boolean
         get() = status.equals("COMPLETED", ignoreCase = true) || percentComplete >= 100
@@ -87,6 +94,11 @@ object CalDavClient {
     private val icsDue = Pattern.compile("DUE[^:]*:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
     private val icsStatus = Pattern.compile("STATUS:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
     private val icsUid = Pattern.compile("UID:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
+    // RELATED-TO с необязательным RELTYPE=PARENT (или без параметров) → UID родителя.
+    private val icsRelatedTo = Pattern.compile(
+        "RELATED-TO(?:;[^:\\r\\n]*)?:([^\\r\\n]+)",
+        Pattern.CASE_INSENSITIVE,
+    )
     private val icsDtStamp = Pattern.compile("DTSTAMP[^:]*:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
     private val icsLastModified = Pattern.compile("LAST-MODIFIED[^:]*:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
     private val icsPriority = Pattern.compile("PRIORITY:([^\\r\\n]+)", Pattern.CASE_INSENSITIVE)
@@ -105,8 +117,8 @@ object CalDavClient {
     fun listCalendars(client: OkHttpClient, baseUrl: String): List<DavCalendar> {
         val body = """
             <?xml version="1.0" encoding="utf-8"?>
-            <d:propfind xmlns:d="DAV:" xmlns:cs="http://calendarserver.org/ns/" xmlns:ical="http://apple.com/ns/ical/">
-              <d:prop><d:displayname/><d:resourcetype/><ical:calendar-color/><cs:getctag/></d:prop>
+            <d:propfind xmlns:d="DAV:" xmlns:cs="http://calendarserver.org/ns/" xmlns:ical="http://apple.com/ns/ical/" xmlns:c="urn:ietf:params:xml:ns:caldav">
+              <d:prop><d:displayname/><d:resourcetype/><ical:calendar-color/><cs:getctag/><c:supported-calendar-component-set/></d:prop>
             </d:propfind>
         """.trimIndent()
         val xml = propfind(client, baseUrl, depth = 1, body)
@@ -291,11 +303,27 @@ object CalDavClient {
         }
         client.newCall(builder.build()).execute().use { response ->
             if (response.code !in 200..299 && response.code != 201 && response.code != 204) {
-                error("CalDAV put event HTTP ${response.code}")
+                error("CalDAV put event HTTP ${response.code}${davErrorDetail(response)}")
             }
         }
     }
 
+    /** Из тела sabre-ошибки достаём человекочитаемую причину (precondition/сообщение). */
+    private fun davErrorDetail(response: okhttp3.Response): String {
+        val body = runCatching { response.peekBody(4096).string() }.getOrNull().orEmpty()
+        if (body.isBlank()) return ""
+        // sabre: <s:message>…</s:message> и имя нарушенного precondition-элемента.
+        val message = Regex("<s:message>(.*?)</s:message>", RegexOption.DOT_MATCHES_ALL)
+            .find(body)?.groupValues?.getOrNull(1)?.trim()
+        val precondition = Regex("<cal:(supported-calendar-component-set|valid-calendar-object-resource|calendar-collection-location-ok)")
+            .find(body)?.groupValues?.getOrNull(1)
+            ?: Regex("<d:(need-privileges)").find(body)?.groupValues?.getOrNull(1)
+        return buildString {
+            if (precondition != null) append(" ($precondition)")
+            if (!message.isNullOrBlank()) append(": ${message.take(180)}")
+        }
+    }
+
     fun createCalendar(
         client: OkHttpClient,
         baseUrl: String,
@@ -332,6 +360,122 @@ object CalDavClient {
         return DavCalendar(href = url, displayName = displayName)
     }
 
+    /** PROPPATCH: переименование и/или смена цвета календаря (null = не менять). */
+    fun updateCalendarProps(
+        client: OkHttpClient,
+        calendarHref: String,
+        displayName: String? = null,
+        color: String? = null,
+    ) {
+        if (displayName == null && color == null) return
+        val props = buildString {
+            if (displayName != null) append("<d:displayname>${escapeXml(displayName)}</d:displayname>")
+            if (color != null) append("<ical:calendar-color>${escapeXml(color)}</ical:calendar-color>")
+        }
+        val body = """
+            <?xml version="1.0" encoding="utf-8"?>
+            <d:propertyupdate xmlns:d="DAV:" xmlns:ical="http://apple.com/ns/ical/">
+              <d:set><d:prop>$props</d:prop></d:set>
+            </d:propertyupdate>
+        """.trimIndent()
+        val req = Request.Builder()
+            .url(calendarHref.trimEnd('/') + "/")
+            .method("PROPPATCH", body.toRequestBody("application/xml; charset=utf-8".toMediaType()))
+            .build()
+        client.newCall(req).execute().use { response ->
+            if (response.code !in 200..299) error("CalDAV proppatch HTTP ${response.code}")
+        }
+    }
+
+    fun deleteCalendar(client: OkHttpClient, calendarHref: String) {
+        val req = Request.Builder().url(calendarHref.trimEnd('/') + "/").delete().build()
+        client.newCall(req).execute().use { response ->
+            if (response.code !in 200..299 && response.code != 204 && response.code != 404) {
+                error("CalDAV delete calendar HTTP ${response.code}")
+            }
+        }
+    }
+
+    data class DavSharee(
+        val principal: String, // principal:principals/users/<id> или groups/<id>
+        val displayName: String,
+        val writable: Boolean,
+    )
+
+    /** Текущие получатели шаринга календаря (oc:invite). */
+    fun listCalendarShares(client: OkHttpClient, calendarHref: String): List<DavSharee> {
+        val body = """
+            <?xml version="1.0" encoding="utf-8"?>
+            <d:propfind xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns">
+              <d:prop><oc:invite/></d:prop>
+            </d:propfind>
+        """.trimIndent()
+        val xml = propfind(client, calendarHref.trimEnd('/') + "/", depth = 0, body)
+        val out = mutableListOf<DavSharee>()
+        val parser = newParser(xml)
+        var principal = ""
+        var name = ""
+        var writable = false
+        var inUser = false
+        while (parser.eventType != XmlPullParser.END_DOCUMENT) {
+            when (parser.eventType) {
+                XmlPullParser.START_TAG -> when (parser.localTag()) {
+                    "user" -> { inUser = true; principal = ""; name = ""; writable = false }
+                    "href" -> if (inUser) principal = parser.readText().trim()
+                    "common-name" -> if (inUser) name = parser.readText().trim()
+                    "read-write" -> if (inUser) writable = true
+                }
+                XmlPullParser.END_TAG -> if (parser.localTag() == "user" && inUser) {
+                    if (principal.isNotBlank()) {
+                        out += DavSharee(
+                            principal = principal,
+                            displayName = name.ifBlank { principal.substringAfterLast('/') },
+                            writable = writable,
+                        )
+                    }
+                    inUser = false
+                }
+            }
+            parser.next()
+        }
+        return out
+    }
+
+    /** Пошарить календарь пользователю/группе (sabre sharing POST). */
+    fun shareCalendar(client: OkHttpClient, calendarHref: String, principal: String, writable: Boolean) {
+        val rw = if (writable) "<o:read-write/>" else ""
+        val body = """
+            <?xml version="1.0" encoding="utf-8"?>
+            <o:share xmlns:d="DAV:" xmlns:o="http://owncloud.org/ns">
+              <o:set>
+                <d:href>${escapeXml(principal)}</d:href>
+                <o:summary/>$rw
+              </o:set>
+            </o:share>
+        """.trimIndent()
+        sharePost(client, calendarHref, body)
+    }
+
+    fun unshareCalendar(client: OkHttpClient, calendarHref: String, principal: String) {
+        val body = """
+            <?xml version="1.0" encoding="utf-8"?>
+            <o:share xmlns:d="DAV:" xmlns:o="http://owncloud.org/ns">
+              <o:remove><d:href>${escapeXml(principal)}</d:href></o:remove>
+            </o:share>
+        """.trimIndent()
+        sharePost(client, calendarHref, body)
+    }
+
+    private fun sharePost(client: OkHttpClient, calendarHref: String, body: String) {
+        val req = Request.Builder()
+            .url(calendarHref.trimEnd('/') + "/")
+            .post(body.toRequestBody("application/xml; charset=utf-8".toMediaType()))
+            .build()
+        client.newCall(req).execute().use { response ->
+            if (response.code !in 200..299) error("CalDAV share HTTP ${response.code}")
+        }
+    }
+
     fun createSubscription(
         client: OkHttpClient,
         baseUrl: String,
@@ -586,6 +730,7 @@ object CalDavClient {
             organizerName = parsed.organizerName,
             alarms = parsed.alarms,
             conferenceUri = parsed.conferenceUri,
+            attachments = parsed.attachments,
         )
     }
 
@@ -634,6 +779,7 @@ object CalDavClient {
         dueDate: LocalDate? = null,
         priority: Int = 0,
         description: String = "",
+        parentUid: String = "",
     ): DavTask {
         val uid = "${UUID.randomUUID()}@f7cloud.mobile"
         val ics = buildVTodoIcs(
@@ -644,6 +790,7 @@ object CalDavClient {
             priority = priority,
             percentComplete = 0,
             description = description,
+            parentUid = parentUid,
         )
         val url = calendar.href.trimEnd('/') + "/$uid.ics"
         val req = Request.Builder()
@@ -670,6 +817,7 @@ object CalDavClient {
             description = description,
             calendarName = calendar.displayName,
             calendarHref = calendar.href,
+            parentUid = parentUid,
         )
     }
 
@@ -691,6 +839,7 @@ object CalDavClient {
             priority = priority,
             percentComplete = percentComplete,
             description = description,
+            parentUid = task.parentUid, // не терять связь с родителем при правке подзадачи
         )
         val req = Request.Builder()
             .url(task.href)
@@ -788,6 +937,99 @@ object CalDavClient {
             .format(instant)
     }
 
+    /** Занятый интервал участника (free/busy), millis UTC. */
+    data class BusyPeriod(val startEpochMilli: Long, val endEpochMilli: Long)
+
+    /**
+     * Запрос занятости участников через scheduling outbox (iTIP VFREEBUSY REQUEST).
+     * Возвращает email → занятые интервалы; участник без данных — пустой список.
+     */
+    fun freeBusy(
+        client: OkHttpClient,
+        serverUrl: String,
+        userId: String,
+        organizerEmail: String,
+        attendeeEmails: List<String>,
+        rangeStart: Instant,
+        rangeEnd: Instant,
+    ): Map<String, List<BusyPeriod>> {
+        if (organizerEmail.isBlank() || attendeeEmails.isEmpty()) return emptyMap()
+        val outbox = calendarsBase(serverUrl, userId).trimEnd('/') + "/outbox/"
+        val ics = buildString {
+            appendLine("BEGIN:VCALENDAR")
+            appendLine("VERSION:2.0")
+            appendLine("PRODID:-//F7cloud Mobile//EN")
+            appendLine("METHOD:REQUEST")
+            appendLine("BEGIN:VFREEBUSY")
+            appendLine("UID:${UUID.randomUUID()}@f7cloud.mobile")
+            appendLine("DTSTAMP:${formatCalDavTime(Instant.now())}")
+            appendLine("DTSTART:${formatCalDavTime(rangeStart)}")
+            appendLine("DTEND:${formatCalDavTime(rangeEnd)}")
+            appendLine("ORGANIZER:mailto:$organizerEmail")
+            attendeeEmails.forEach { appendLine("ATTENDEE:mailto:$it") }
+            appendLine("END:VFREEBUSY")
+            appendLine("END:VCALENDAR")
+        }
+        val req = Request.Builder()
+            .url(outbox)
+            .post(ics.toRequestBody("text/calendar; charset=utf-8".toMediaType()))
+            .build()
+        val xml = client.newCall(req).execute().use { response ->
+            if (!response.isSuccessful) error("CalDAV free-busy HTTP ${response.code}")
+            response.body?.string().orEmpty()
+        }
+        return parseFreeBusyResponse(xml)
+    }
+
+    private fun parseFreeBusyResponse(xml: String): Map<String, List<BusyPeriod>> {
+        val out = mutableMapOf<String, List<BusyPeriod>>()
+        val parser = newParser(xml)
+        var recipient = ""
+        var calendarData = StringBuilder()
+        var inCalendarData = false
+        while (parser.eventType != XmlPullParser.END_DOCUMENT) {
+            when (parser.eventType) {
+                XmlPullParser.START_TAG -> when (parser.localTag()) {
+                    "response" -> { recipient = ""; calendarData = StringBuilder() }
+                    "href" -> if (recipient.isBlank()) recipient = parser.readText().trim()
+                    "calendar-data" -> { inCalendarData = true; calendarData = StringBuilder() }
+                }
+                XmlPullParser.TEXT -> if (inCalendarData) calendarData.append(parser.text)
+                XmlPullParser.END_TAG -> when (parser.localTag()) {
+                    "calendar-data" -> inCalendarData = false
+                    "response" -> if (recipient.isNotBlank()) {
+                        val email = recipient.removePrefix("mailto:").trim()
+                        out[email] = parseBusyPeriods(calendarData.toString())
+                    }
+                }
+            }
+            parser.next()
+        }
+        return out
+    }
+
+    private val freeBusyLine = Pattern.compile("^FREEBUSY[^:]*:(.+)$", Pattern.MULTILINE or Pattern.CASE_INSENSITIVE)
+
+    private fun parseBusyPeriods(ics: String): List<BusyPeriod> {
+        val unfolded = ics.replace(Regex("\\r?\\n[ \\t]"), "")
+        val out = mutableListOf<BusyPeriod>()
+        val m = freeBusyLine.matcher(unfolded)
+        while (m.find()) {
+            m.group(1).orEmpty().split(',').forEach { period ->
+                val parts = period.trim().split('/')
+                if (parts.size != 2) return@forEach
+                val start = CalendarIcs.parseIcsInstant(parts[0]) ?: return@forEach
+                val end = if (parts[1].startsWith("P", ignoreCase = true)) {
+                    runCatching { start.plus(java.time.Duration.parse(parts[1])) }.getOrNull() ?: return@forEach
+                } else {
+                    CalendarIcs.parseIcsInstant(parts[1]) ?: return@forEach
+                }
+                out += BusyPeriod(start.toEpochMilli(), end.toEpochMilli())
+            }
+        }
+        return out.sortedBy { it.startEpochMilli }
+    }
+
     private fun parseCalendars(xml: String, baseUrl: String): List<DavCalendar> {
         val parser = newParser(xml)
         val out = mutableListOf<DavCalendar>()
@@ -798,6 +1040,7 @@ object CalDavClient {
         var calendarColor: String? = null
         var ctag = ""
         var isCollection = false
+        var comps = mutableSetOf<String>()
         while (parser.eventType != XmlPullParser.END_DOCUMENT) {
             when (parser.eventType) {
                 XmlPullParser.START_TAG -> when (parser.localTag()) {
@@ -808,8 +1051,12 @@ object CalDavClient {
                         calendarColor = null
                         ctag = ""
                         isCollection = false
+                        comps = mutableSetOf()
                     }
                     "collection" -> if (inResponse) isCollection = true
+                    "comp" -> if (inResponse) {
+                        parser.getAttributeValue(null, "name")?.trim()?.uppercase()?.let { comps += it }
+                    }
                     "displayname" -> if (inResponse) displayName = parser.readText().trim()
                     "calendar-color" -> if (inResponse) calendarColor = parser.readText().trim()
                     "getctag" -> if (inResponse) ctag = parser.readText().trim()
@@ -826,7 +1073,15 @@ object CalDavClient {
                             val name = displayName.ifBlank {
                                 fullPath.removePrefix(basePath).trim('/').substringAfterLast('/')
                             }
-                            out += DavCalendar(href = full, displayName = name, color = calendarColor, ctag = ctag)
+                            // Свойство не вернулось (comps пуст) → считаем событийным (не ломаем).
+                            val supportsEvents = comps.isEmpty() || "VEVENT" in comps
+                            out += DavCalendar(
+                                href = full,
+                                displayName = name,
+                                color = calendarColor,
+                                ctag = ctag,
+                                supportsEvents = supportsEvents,
+                            )
                         }
                     }
                     inResponse = false
@@ -938,6 +1193,7 @@ object CalDavClient {
             description = extractIcs(icsDescription, ics),
             calendarName = calendarName,
             calendarHref = calendarHref,
+            parentUid = extractIcs(icsRelatedTo, ics).trim(),
         )
     }
 
@@ -949,6 +1205,7 @@ object CalDavClient {
         priority: Int,
         percentComplete: Int,
         description: String,
+        parentUid: String = "",
     ): String {
         val now = Instant.now()
         return buildString {
@@ -976,6 +1233,9 @@ object CalDavClient {
             if (description.isNotBlank()) {
                 appendLine("DESCRIPTION:${escapeIcsText(description)}")
             }
+            if (parentUid.isNotBlank()) {
+                appendLine("RELATED-TO;RELTYPE=PARENT:${escapeIcsText(parentUid)}")
+            }
             appendLine("END:VTODO")
             appendLine("END:VCALENDAR")
         }

core/network/src/main/java/ru/forbion/f7cloud/core/network/CalendarIcs.kt

@@ -23,6 +23,12 @@ data class CalendarAlarmData(
     val action: String = "DISPLAY",
 )
 
+data class CalendarAttachmentData(
+    val url: String,
+    val fileName: String = "",
+    val mimeType: String = "",
+)
+
 data class CalendarEventData(
     val uid: String,
     val summary: String,
@@ -40,6 +46,7 @@ data class CalendarEventData(
     val organizerName: String = "",
     val alarms: List<CalendarAlarmData> = emptyList(),
     val conferenceUri: String = "",
+    val attachments: List<CalendarAttachmentData> = emptyList(),
 )
 
 object CalendarIcs {
@@ -99,6 +106,13 @@ object CalendarIcs {
         val talkUrl = conference.ifBlank {
             if (location.contains("/call/")) location else ""
         }
+        val attachments = props.filter { it.name == "ATTACH" && it.value.isNotBlank() }.map {
+            CalendarAttachmentData(
+                url = it.value.trim(),
+                fileName = it.params["FILENAME"]?.let(::unescape).orEmpty(),
+                mimeType = it.params["FMTTYPE"].orEmpty(),
+            )
+        }
         return CalendarEventData(
             uid = uid,
             summary = unescape(lines["SUMMARY"].orEmpty()).ifBlank { "(без названия)" },
@@ -116,6 +130,7 @@ object CalendarIcs {
             organizerName = orgName,
             alarms = alarms,
             conferenceUri = talkUrl,
+            attachments = attachments,
         )
     }
 
@@ -163,6 +178,13 @@ object CalendarIcs {
             appendLine("CONFERENCE;FEATURE=PHONE,VIDEO;VALUE=URI:$talk")
             if (data.location.isBlank()) appendLine("LOCATION:$talk")
         }
+        data.attachments.forEach { att ->
+            if (att.url.isNotBlank()) {
+                val fmt = if (att.mimeType.isNotBlank()) ";FMTTYPE=${att.mimeType}" else ""
+                val fname = if (att.fileName.isNotBlank()) ";FILENAME=${escape(att.fileName)}" else ""
+                appendLine("ATTACH$fmt$fname:${att.url}")
+            }
+        }
         data.alarms.forEach { alarm ->
             appendLine("BEGIN:VALARM")
             appendLine("ACTION:${alarm.action}")

core/network/src/main/java/ru/forbion/f7cloud/core/network/NetworkFactory.kt

@@ -33,6 +33,14 @@ object NetworkFactory {
         clients.clear() // пересобрать производные клиенты уже с кэшем
     }
 
+    /** Билдер на основе базового клиента (пул/кэш) c опциональным trust-all TLS, без auth. */
+    fun newBaseBuilder(trustAllCerts: Boolean = false): OkHttpClient.Builder =
+        base.newBuilder()
+            .callTimeout(30, TimeUnit.SECONDS)
+            .connectTimeout(20, TimeUnit.SECONDS)
+            .readTimeout(30, TimeUnit.SECONDS)
+            .applyUnsafeSslIfNeeded(trustAllCerts)
+
     fun newAuthedClient(
         username: String,
         appPassword: String,

core/network/src/main/java/ru/forbion/f7cloud/core/network/NextcloudWebSession.kt

@@ -0,0 +1,82 @@
+package ru.forbion.f7cloud.core.network
+
+import okhttp3.Cookie
+import okhttp3.CookieJar
+import okhttp3.FormBody
+import okhttp3.HttpUrl
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import java.util.concurrent.ConcurrentHashMap
+
+/**
+ * Устанавливает НАСТОЯЩУЮ веб-сессию Nextcloud (cookie + CSRF) по форме `/login`, используя
+ * app-пароль как пароль (он валиден для входа и обходит 2FA). Нужно для встраивания веб-viewer'ов
+ * (доска Whiteboard и т.п.), которым мало Basic-auth: их Vue-XHR ходят по сессии.
+ */
+object NextcloudWebSession {
+    private val requestTokenRegex = Regex(
+        """(?:name=["']requesttoken["']\s+value|<meta\s+name=["']requesttoken["']\s+content)=["']([^"']+)["']""",
+        RegexOption.IGNORE_CASE,
+    )
+
+    /** Cookie, собранные при логине (для переноса в WebView CookieManager). */
+    fun login(
+        serverUrl: String,
+        username: String,
+        appPassword: String,
+        trustAllCerts: Boolean = false,
+    ): List<Cookie> {
+        val base = serverUrl.trimEnd('/')
+        val host = base.toHttpUrl().host
+        val jar = MemoryCookieJar()
+        val client = NetworkFactory.newBaseBuilder(trustAllCerts)
+            .cookieJar(jar)
+            .followRedirects(true)
+            .followSslRedirects(true)
+            .build()
+
+        // 1. GET страницы логина — начальные cookie + requesttoken.
+        val loginHtml = client.newCall(
+            Request.Builder().url("$base/login").header("User-Agent", USER_AGENT).get().build(),
+        ).execute().use { it.body?.string().orEmpty() }
+        val token = requestTokenRegex.find(loginHtml)?.groupValues?.getOrNull(1).orEmpty()
+
+        // 2. POST формы логина app-паролем — сервер ставит session-cookie.
+        val form = FormBody.Builder()
+            .add("user", username)
+            .add("password", appPassword)
+            .apply { if (token.isNotBlank()) add("requesttoken", token) }
+            .add("remember_login", "1")
+            .add("timezone", "UTC")
+            .add("timezone_offset", "0")
+            .build()
+        client.newCall(
+            Request.Builder()
+                .url("$base/login")
+                .header("User-Agent", USER_AGENT)
+                .apply { if (token.isNotBlank()) header("requesttoken", token) }
+                .header("OCS-APIRequest", "true")
+                .post(form)
+                .build(),
+        ).execute().use { /* cookie осели в jar */ }
+
+        return jar.cookiesForHost(host)
+    }
+
+    private const val USER_AGENT = "Mozilla/5.0 (Android) F7cloud-Mobile"
+
+    private class MemoryCookieJar : CookieJar {
+        private val store = ConcurrentHashMap<String, MutableList<Cookie>>()
+        override fun saveFromResponse(url: HttpUrl, cookies: List<Cookie>) {
+            val list = store.getOrPut(url.host) { mutableListOf() }
+            cookies.forEach { c ->
+                list.removeAll { it.name == c.name }
+                list += c
+            }
+        }
+        override fun loadForRequest(url: HttpUrl): List<Cookie> =
+            store[url.host].orEmpty().filter { it.matches(url) }
+        fun cookiesForHost(host: String): List<Cookie> = store[host].orEmpty().toList()
+    }
+}

feature/calendar/build.gradle

@@ -32,6 +32,7 @@ dependencies {
     implementation composeBom
     implementation libs.compose.ui
     implementation libs.compose.material3
+    implementation libs.compose.material.icons.extended
     implementation libs.compose.foundation
     implementation libs.lifecycle.viewmodel.compose
     implementation libs.activity.compose

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarApiClient.kt

@@ -25,6 +25,19 @@ data class CalendarLocationSuggestion(
     val address: String,
 )
 
+data class CalendarTalkRoom(
+    val token: String,
+    val displayName: String,
+    val callUrl: String,
+)
+
+data class CalendarShareeSuggestion(
+    val displayName: String,
+    /** DAV-принципал: principal:principals/users/<id> или groups/<id>. */
+    val principal: String,
+    val isGroup: Boolean,
+)
+
 data class CalendarUserSettings(
     val timezone: String = "automatic",
     val showWeekends: Boolean = true,
@@ -106,6 +119,105 @@ class CalendarApiClient {
         }
     }
 
+    /** Email текущего пользователя (для ORGANIZER в iTIP free-busy). */
+    fun getUserEmail(session: AuthSession): String {
+        val client = authedClient(session)
+        val url = "${session.serverUrl.trimEnd('/')}/ocs/v2.php/cloud/user?format=json"
+        val request = Request.Builder().url(url).get().applyOcsJson().build()
+        return client.newCall(request).execute().use { response ->
+            val json = parseJsonObject(response.body?.string().orEmpty(), "user info")
+            json.optJSONObject("ocs")?.optJSONObject("data")?.optString("email").orEmpty()
+        }
+    }
+
+    /** Поиск пользователей/групп для шаринга календаря (OCS sharees). */
+    fun searchSharees(session: AuthSession, query: String): List<CalendarShareeSuggestion> {
+        if (query.trim().length < 2) return emptyList()
+        val client = authedClient(session)
+        val q = java.net.URLEncoder.encode(query.trim(), Charsets.UTF_8.name())
+        val url = "${session.serverUrl.trimEnd('/')}/ocs/v1.php/apps/files_sharing/api/v1/sharees" +
+            "?format=json&itemType=calendar&perPage=10&search=$q"
+        val request = Request.Builder().url(url).get().applyOcsJson().build()
+        return client.newCall(request).execute().use { response ->
+            val json = parseJsonObject(response.body?.string().orEmpty(), "sharees")
+            val data = json.optJSONObject("ocs")?.optJSONObject("data") ?: return emptyList()
+            val out = mutableListOf<CalendarShareeSuggestion>()
+            fun collect(arrName: String, isGroup: Boolean) {
+                val exactWrap = data.optJSONObject("exact")?.optJSONArray(arrName) ?: JSONArray()
+                val plain = data.optJSONArray(arrName) ?: JSONArray()
+                for (arr in listOf(exactWrap, plain)) {
+                    for (i in 0 until arr.length()) {
+                        val item = arr.optJSONObject(i) ?: continue
+                        val id = item.optJSONObject("value")?.optString("shareWith").orEmpty()
+                        if (id.isBlank()) continue
+                        val kind = if (isGroup) "groups" else "users"
+                        out += CalendarShareeSuggestion(
+                            displayName = item.optString("label").ifBlank { id },
+                            principal = "principal:principals/$kind/$id",
+                            isGroup = isGroup,
+                        )
+                    }
+                }
+            }
+            collect("users", isGroup = false)
+            collect("groups", isGroup = true)
+            out.distinctBy { it.principal }
+        }
+    }
+
+    /** Существующие беседы Talk (для выбора комнаты в событии). */
+    fun listTalkRooms(session: AuthSession): List<CalendarTalkRoom> {
+        val client = authedClient(session)
+        val url = "${session.serverUrl.trimEnd('/')}/ocs/v2.php/apps/spreed/api/v4/room?format=json"
+        val request = Request.Builder().url(url).get().applyOcsJson().build()
+        return client.newCall(request).execute().use { response ->
+            val json = parseJsonObject(response.body?.string().orEmpty(), "list talk rooms")
+            if (!isOcsSuccess(json.ocsMeta())) return emptyList()
+            val data = json.optJSONObject("ocs")?.optJSONArray("data") ?: JSONArray()
+            val out = mutableListOf<CalendarTalkRoom>()
+            for (i in 0 until data.length()) {
+                val room = data.optJSONObject(i) ?: continue
+                val token = room.optString("token")
+                if (token.isBlank()) continue
+                val name = room.optString("displayName").ifBlank { room.optString("name") }
+                out += CalendarTalkRoom(
+                    token = token,
+                    displayName = name.ifBlank { "Беседа" },
+                    callUrl = "${session.serverUrl.trimEnd('/')}/call/$token",
+                )
+            }
+            out
+        }
+    }
+
+    /** Создать беседу заданного типа (2 — групповая/публичная, 3 — публичная по ссылке). */
+    fun createTalkRoomTyped(session: AuthSession, roomName: String, roomType: Int): CalendarTalkRoom {
+        val client = authedClient(session)
+        val url = "${session.serverUrl.trimEnd('/')}/ocs/v2.php/apps/spreed/api/v4/room?format=json"
+        val payload = JSONObject()
+            .put("roomType", roomType)
+            .put("roomName", roomName.trim().ifBlank { "Встреча" })
+            .put("readOnly", 0)
+            .put("listable", 0)
+            .toString()
+        val request = Request.Builder()
+            .url(url)
+            .post(payload.toRequestBody("application/json; charset=utf-8".toMediaType()))
+            .applyOcsJson()
+            .build()
+        client.newCall(request).execute().use { response ->
+            val json = parseJsonObject(response.body?.string().orEmpty(), "create talk room")
+            if (!isOcsSuccess(json.ocsMeta())) error("Не удалось создать беседу Talk")
+            val token = json.optJSONObject("ocs")?.optJSONObject("data")?.optString("token").orEmpty()
+            if (token.isBlank()) error("Не удалось создать беседу Talk")
+            return CalendarTalkRoom(
+                token = token,
+                displayName = roomName.trim().ifBlank { "Встреча" },
+                callUrl = "${session.serverUrl.trimEnd('/')}/call/$token",
+            )
+        }
+    }
+
     fun createTalkRoom(session: AuthSession, roomName: String): String {
         val client = authedClient(session)
         val url = "${session.serverUrl.trimEnd('/')}/ocs/v2.php/apps/spreed/api/v4/room?format=json"

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarComponents.kt

@@ -23,26 +23,26 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.DatePicker
-import androidx.compose.material3.DatePickerDialog
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.RadioButton
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
-import androidx.compose.material3.rememberDatePickerState
 import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.offset
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
@@ -77,7 +77,6 @@ import java.util.Locale
 private val weekDayLabels = listOf("Пн", "Вт", "Ср", "Чт", "Пт", "Сб", "Вс")
 private val dayTitleFormatter = DateTimeFormatter.ofPattern("d MMMM yyyy", Locale.forLanguageTag("ru"))
 private val listDayFormatter = DateTimeFormatter.ofPattern("EEEE, d MMMM", Locale.forLanguageTag("ru"))
-private val toolbarDateFormatter = DateTimeFormatter.ofPattern("MMM d, yyyy", Locale.ENGLISH)
 private val dayHeaderFormatter = DateTimeFormatter.ofPattern("EE dd.M.yyyy", Locale.forLanguageTag("ru"))
 
 private fun viewModeIconUrl(base: String, mode: CalendarViewMode): String = when (mode) {
@@ -865,6 +864,7 @@ fun CalendarNavigationSidebar(
     onOpenTasks: () -> Unit,
     onCreateBook: () -> Unit,
     onSyncNow: () -> Unit,
+    onEditCalendar: ((CalendarBookItem) -> Unit)? = null,
 ) {
     val base = session.serverUrl.trimEnd('/')
     val (myCalendars, deckCalendars) = remember(state.calendars) {
@@ -916,7 +916,7 @@ fun CalendarNavigationSidebar(
                         onAdd = onCreateBook,
                     )
                     myCalendars.forEach { cal ->
-                        CalendarSidebarCalendarRow(cal, onToggleCalendar)
+                        CalendarSidebarCalendarRow(cal, onToggleCalendar, onEditCalendar)
                     }
                     if (deckCalendars.isNotEmpty()) {
                         Spacer(Modifier.height(8.dp))
@@ -1006,6 +1006,7 @@ private fun CalendarSidebarCaption(
 private fun CalendarSidebarCalendarRow(
     cal: CalendarBookItem,
     onToggleCalendar: (String) -> Unit,
+    onEditCalendar: ((CalendarBookItem) -> Unit)? = null,
 ) {
     val accent = calendarAccentColor(cal)
     Row(
@@ -1029,7 +1030,14 @@ private fun CalendarSidebarCalendarRow(
             color = F7Colors.TextPrimary,
             maxLines = 2,
             overflow = TextOverflow.Ellipsis,
+            modifier = Modifier.weight(1f),
         )
+        // Подписки редактировать нельзя (PROPPATCH/шаринг не применимы)
+        if (onEditCalendar != null && !cal.isSubscription) {
+            IconButton(onClick = { onEditCalendar(cal) }, modifier = Modifier.size(28.dp)) {
+                Text("✎", color = F7Colors.TextSecondary, fontSize = 16.sp)
+            }
+        }
     }
 }
 
@@ -1217,23 +1225,26 @@ fun CalendarDatePickerDialog(
     onDismiss: () -> Unit,
     onConfirm: (LocalDate) -> Unit,
 ) {
-    val state = rememberDatePickerState(
-        initialSelectedDateMillis = selectedDay.atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli(),
+    // Нативный DatePickerDialog вместо material3.DatePicker: material3-версия (BOM 2025.02)
+    // падала при открытии, а платформенный диалог стабилен и сам локализуется под системную
+    // локаль (русские месяцы). Показываем один раз, пока композабл присутствует в дереве.
+    val context = LocalContext.current
+    val currentOnConfirm by rememberUpdatedState(onConfirm)
+    val currentOnDismiss by rememberUpdatedState(onDismiss)
+    DisposableEffect(Unit) {
+        val dialog = android.app.DatePickerDialog(
+            context,
+            { _, year, month, dayOfMonth ->
+                currentOnConfirm(LocalDate.of(year, month + 1, dayOfMonth))
+            },
+            selectedDay.year,
+            selectedDay.monthValue - 1,
+            selectedDay.dayOfMonth,
         )
-    DatePickerDialog(
-        onDismissRequest = onDismiss,
-        confirmButton = {
-            TextButton(onClick = {
-                val millis = state.selectedDateMillis ?: return@TextButton
-                val day = Instant.ofEpochMilli(millis).atZone(ZoneId.systemDefault()).toLocalDate()
-                onConfirm(day)
-            }) { Text("OK") }
-        },
-        dismissButton = {
-            TextButton(onClick = onDismiss) { Text("Отмена") }
-        },
-    ) {
-        DatePicker(state = state)
+        // onDismiss закрывает и по «Отмена», и после выбора (диалог сам себя закрывает).
+        dialog.setOnDismissListener { currentOnDismiss() }
+        dialog.show()
+        onDispose { dialog.setOnDismissListener(null); dialog.dismiss() }
     }
 }
 

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarModels.kt

@@ -69,6 +69,8 @@ data class CalendarTaskItem(
 data class CalendarEventDraft(
     val title: String = "",
     val date: java.time.LocalDate = java.time.LocalDate.now(),
+    /** Дата окончания; null = совпадает с датой начала (однодневное событие). */
+    val endDate: java.time.LocalDate? = null,
     val startTime: String = "10:00",
     val endTime: String = "11:00",
     val allDay: Boolean = false,
@@ -82,9 +84,17 @@ data class CalendarEventDraft(
     val classification: EventClassification = EventClassification.PUBLIC,
     val attendees: List<CalendarAttendeeItem> = emptyList(),
     val attendeeQuery: String = "",
-    val reminderMinutes: Int = 15,
+    /** Напоминания в минутах до начала (0 = во время начала); поддерживается несколько. */
+    val reminders: List<Int> = listOf(15),
     val addTalkRoom: Boolean = false,
     val talkRoomUrl: String = "",
+    val attachments: List<CalendarAttachmentItem> = emptyList(),
+)
+
+data class CalendarAttachmentItem(
+    val fileName: String,
+    val url: String,
+    val mimeType: String = "",
 )
 
 data class CalendarCreateBookDraft(

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarRepository.kt

@@ -1,18 +1,24 @@
 package ru.forbion.f7cloud.feature.calendar
 
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
+import okhttp3.RequestBody.Companion.toRequestBody
 import ru.forbion.f7cloud.core.auth.AuthSession
 import ru.forbion.f7cloud.core.auth.OcsUserResolver
 import ru.forbion.f7cloud.core.network.CalendarAlarmData
+import ru.forbion.f7cloud.core.network.CalendarAttachmentData
 import ru.forbion.f7cloud.core.network.CalendarAttendeeData
 import ru.forbion.f7cloud.core.network.CalendarEventData
 import ru.forbion.f7cloud.core.network.CalendarIcs
 import ru.forbion.f7cloud.core.network.CalDavClient
 import ru.forbion.f7cloud.core.network.DavCalendar
+import ru.forbion.f7cloud.core.network.DavClient
 import ru.forbion.f7cloud.core.network.DavEvent
 import ru.forbion.f7cloud.core.network.DavTask
 import ru.forbion.f7cloud.core.network.DavTrashEvent
 import ru.forbion.f7cloud.core.network.NetworkFactory
+import ru.forbion.f7cloud.core.network.davFileUrl
+import ru.forbion.f7cloud.core.network.davFolderUrl
 import java.time.Instant
 import java.time.LocalDate
 import java.time.LocalDateTime
@@ -104,13 +110,111 @@ class CalendarRepository(
 
     fun createTalkRoom(session: AuthSession, roomName: String): String = apiClient.createTalkRoom(session, roomName)
 
+    fun listTalkRooms(session: AuthSession): List<CalendarTalkRoom> = apiClient.listTalkRooms(session)
+
+    private fun davUserId(session: AuthSession): String =
+        session.davUserId ?: OcsUserResolver.resolveDavUserId(session)
+
+    // --- Управление календарём ---
+    fun updateCalendarProps(session: AuthSession, calendarHref: String, displayName: String?, color: String?) {
+        CalDavClient.updateCalendarProps(davClient(session), calendarHref, displayName, color)
+    }
+
+    fun deleteCalendar(session: AuthSession, calendarHref: String) {
+        CalDavClient.deleteCalendar(davClient(session), calendarHref)
+    }
+
+    fun listCalendarShares(session: AuthSession, calendarHref: String): List<CalDavClient.DavSharee> =
+        CalDavClient.listCalendarShares(davClient(session), calendarHref)
+
+    fun shareCalendar(session: AuthSession, calendarHref: String, principal: String, writable: Boolean) {
+        CalDavClient.shareCalendar(davClient(session), calendarHref, principal, writable)
+    }
+
+    fun unshareCalendar(session: AuthSession, calendarHref: String, principal: String) {
+        CalDavClient.unshareCalendar(davClient(session), calendarHref, principal)
+    }
+
+    fun searchSharees(session: AuthSession, query: String): List<CalendarShareeSuggestion> =
+        apiClient.searchSharees(session, query)
+
+    /** Занятость участников (email → интервалы) за диапазон. */
+    fun freeBusy(
+        session: AuthSession,
+        attendeeEmails: List<String>,
+        rangeStart: Instant,
+        rangeEnd: Instant,
+    ): Map<String, List<CalDavClient.BusyPeriod>> {
+        val organizer = apiClient.getUserEmail(session)
+        if (organizer.isBlank()) error("У пользователя не задан email — занятость недоступна")
+        return CalDavClient.freeBusy(
+            davClient(session),
+            session.serverUrl,
+            davUserId(session),
+            organizer,
+            attendeeEmails,
+            rangeStart,
+            rangeEnd,
+        )
+    }
+
+    private fun davClient(session: AuthSession): OkHttpClient =
+        NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+
+    /** Загрузка файла с устройства в папку /Calendar и возврат ATTACH-элемента (WebDAV-URL). */
+    fun uploadAttachment(
+        session: AuthSession,
+        fileName: String,
+        mimeType: String,
+        bytes: ByteArray,
+    ): CalendarAttachmentItem {
+        val client = NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+        val userId = davUserId(session)
+        // Папка для вложений календаря; создаём best-effort (уже существует → игнорируем).
+        runCatching { DavClient.mkcol(client, davFolderUrl(session.serverUrl, userId, "Calendar")) }
+        val safeName = sanitizeFileName(fileName)
+        val fileUrl = davFileUrl(session.serverUrl, userId, "Calendar/$safeName")
+        val media = mimeType.ifBlank { "application/octet-stream" }.toMediaType()
+        DavClient.put(client, fileUrl, bytes.toRequestBody(media))
+        return CalendarAttachmentItem(fileName = safeName, url = fileUrl, mimeType = mimeType)
+    }
+
+    /** Список файлов/папок в директории (для пикера «Добавить из файлов»). relativePath — от корня. */
+    fun listUserFiles(session: AuthSession, relativePath: String): List<DavClient.DavEntry> {
+        val client = NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+        val userId = davUserId(session)
+        val folderUrl = davFolderUrl(session.serverUrl, userId, relativePath)
+        val entries = DavClient.propfind(client, folderUrl, depth = 1)
+        val self = folderUrl.trimEnd('/')
+        // Убираем саму папку (первый ответ PROPFIND) и скрытые файлы.
+        return entries
+            .filter { it.href.trimEnd('/') != self && !it.name.startsWith('.') }
+            .sortedWith(compareByDescending<DavClient.DavEntry> { it.isDirectory }.thenBy { it.name.lowercase() })
+    }
+
+    /** Полный WebDAV-URL файла (для ATTACH при выборе из Файлов). */
+    fun fileAttachment(session: AuthSession, relativePath: String, mimeType: String): CalendarAttachmentItem {
+        val userId = davUserId(session)
+        val url = davFileUrl(session.serverUrl, userId, relativePath)
+        return CalendarAttachmentItem(fileName = relativePath.substringAfterLast('/'), url = url, mimeType = mimeType)
+    }
+
+    private fun sanitizeFileName(name: String): String =
+        name.substringAfterLast('/').substringAfterLast('\\').ifBlank { "attachment" }
+            .replace(Regex("[\\r\\n\"]"), "_")
+
+    fun createTalkRoomTyped(session: AuthSession, roomName: String, roomType: Int): CalendarTalkRoom =
+        apiClient.createTalkRoomTyped(session, roomName, roomType)
+
     fun syncTalkParticipants(session: AuthSession, callUrl: String, emails: List<String>) {
         apiClient.addTalkParticipants(session, callUrl, emails)
     }
 
     fun saveEvent(session: AuthSession, draft: CalendarEventDraft, existing: CalendarEventItem? = null): CalendarEventItem {
         val ctx = openDavContext(session)
-        val calendar = ctx.calendars.firstOrNull { it.href == draft.calendarHref } ?: ctx.defaultCalendar
+        val picked = ctx.calendars.firstOrNull { it.href == draft.calendarHref } ?: ctx.defaultCalendar
+        // Если выбранная коллекция не принимает VEVENT (список задач) — уводим в событийный дефолт.
+        val calendar = if (picked.supportsEvents) picked else ctx.defaultCalendar
         var talkUrl = draft.talkRoomUrl
         if (draft.addTalkRoom && talkUrl.isBlank()) {
             talkUrl = apiClient.createTalkRoom(session, draft.title)
@@ -197,10 +301,12 @@ class CalendarRepository(
         val base = CalDavClient.calendarsBase(session.serverUrl, userId)
         val calendars = CalDavClient.listCalendars(client, base)
         if (calendars.isEmpty()) throw IllegalStateException("Календари не найдены")
-        val default = calendars.firstOrNull { cal ->
+        // Дефолт под события — только событийная коллекция (не VTODO-список задач), иначе PUT 403.
+        val eventCals = calendars.filter { it.supportsEvents }.ifEmpty { calendars }
+        val default = eventCals.firstOrNull { cal ->
             val name = cal.displayName.lowercase()
             name.contains("личн") || name.contains("personal") || name == "calendar"
-        } ?: calendars.first()
+        } ?: eventCals.first()
         return CalDavContext(client, calendars, default)
     }
 
@@ -264,6 +370,7 @@ class CalendarRepository(
         organizerEmail = organizerEmail,
         talkRoomUrl = conferenceUri.ifBlank { if (location.contains("/call/")) location else "" },
         alarms = alarms.map { CalendarReminderItem(it.minutesBefore, it.action) },
+        attachments = attachments.map { CalendarAttachmentItem(it.fileName, it.url, it.mimeType) },
         source = CalendarEventSource.F7CLOUD,
     )
 
@@ -361,23 +468,27 @@ data class CalendarEventItem(
     val organizerEmail: String = "",
     val talkRoomUrl: String = "",
     val alarms: List<CalendarReminderItem> = emptyList(),
+    val attachments: List<CalendarAttachmentItem> = emptyList(),
     val source: CalendarEventSource = CalendarEventSource.F7CLOUD,
 )
 
 private fun CalendarEventDraft.toEventData(uid: String? = null, talkUrl: String = ""): CalendarEventData {
     val zone = ZoneId.systemDefault()
+    // Многодневные события: дата окончания отдельная (не раньше даты начала).
+    val endDay = (endDate ?: date).coerceAtLeast(date)
     val start = if (allDay) {
         date.atStartOfDay(zone).toInstant().toEpochMilli()
     } else {
         parseDateTime(date, startTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
             ?: date.atTime(10, 0).atZone(zone).toInstant().toEpochMilli()
     }
-    val end = if (allDay) {
-        date.plusDays(1).atStartOfDay(zone).toInstant().toEpochMilli()
+    val endRaw = if (allDay) {
+        endDay.plusDays(1).atStartOfDay(zone).toInstant().toEpochMilli()
     } else {
-        parseDateTime(date, endTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
-            ?: date.atTime(11, 0).atZone(zone).toInstant().toEpochMilli()
+        parseDateTime(endDay, endTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
+            ?: endDay.atTime(11, 0).atZone(zone).toInstant().toEpochMilli()
     }
+    val end = endRaw.coerceAtLeast(start)
     val rrule = when {
         recurrence != RecurrencePreset.NONE -> recurrence.rrule
         customRrule.isNotBlank() -> customRrule
@@ -400,8 +511,9 @@ private fun CalendarEventDraft.toEventData(uid: String? = null, talkUrl: String
         attendees = attendees.map {
             CalendarAttendeeData(it.email, it.displayName, it.partStat)
         },
-        alarms = if (reminderMinutes > 0) listOf(CalendarAlarmData(reminderMinutes)) else emptyList(),
+        alarms = reminders.filter { it >= 0 }.distinct().map { CalendarAlarmData(it) },
         conferenceUri = conf,
+        attachments = attachments.map { CalendarAttachmentData(it.url, it.fileName, it.mimeType) },
     )
 }
 
@@ -421,6 +533,7 @@ private fun CalendarEventItem.toEventData(): CalendarEventData = CalendarEventDa
     organizerEmail = organizerEmail,
     alarms = alarms.map { CalendarAlarmData(it.minutesBefore, it.action) },
     conferenceUri = talkRoomUrl,
+    attachments = attachments.map { CalendarAttachmentData(it.url, it.fileName, it.mimeType) },
 )
 
 private fun CalendarEventData.toItem(
@@ -448,6 +561,7 @@ private fun CalendarEventData.toItem(
     attendees = attendees.map { it.toItem() },
     talkRoomUrl = conferenceUri,
     alarms = alarms.map { CalendarReminderItem(it.minutesBefore, it.action) },
+    attachments = attachments.map { CalendarAttachmentItem(it.fileName, it.url, it.mimeType) },
 )
 
 private fun CalendarAttendeeData.toItem() = CalendarAttendeeItem(email, displayName, partStat)

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarScreen.kt

@@ -74,6 +74,9 @@ fun CalendarScreen(
             vm.updateEventDraft { it } // no-op; snack via error path if needed
         }
     }
+    val attachmentLauncher = rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri: Uri? ->
+        if (uri != null) vm.uploadDeviceAttachment(uri)
+    }
 
     fun hasCalendarPermission(): Boolean {
         val read = ContextCompat.checkSelfPermission(context, Manifest.permission.READ_CALENDAR) ==
@@ -220,6 +223,48 @@ fun CalendarScreen(
             onRemoveAttendee = vm::removeAttendee,
             onSearchLocations = vm::searchLocations,
             onApplyLocation = vm::applyLocationSuggestion,
+            onOpenTalkPicker = vm::openTalkPicker,
+            onPickDeviceAttachment = { attachmentLauncher.launch("*/*") },
+            onPickFilesAttachment = vm::openFilesPicker,
+            onRemoveAttachment = vm::removeAttachment,
+            onOpenFreeBusy = vm::openFreeBusy,
+        )
+    }
+
+    if (state.freeBusyOpen) {
+        CalendarFreeBusyDialog(
+            state = state,
+            onDismiss = vm::closeFreeBusy,
+        )
+    }
+
+    if (state.talkPickerOpen) {
+        CalendarTalkPickerDialog(
+            state = state,
+            onDismiss = vm::closeTalkPicker,
+            onSelect = vm::selectTalkRoom,
+            onCreate = vm::createTalkConversation,
+        )
+    }
+
+    if (state.filesPickerOpen) {
+        CalendarFilesPickerDialog(
+            state = state,
+            onDismiss = vm::closeFilesPicker,
+            onNavigate = vm::navigateFilesPicker,
+            onPick = vm::pickFileAttachment,
+        )
+    }
+
+    if (state.editCalendarOpen) {
+        CalendarEditBookDialog(
+            state = state,
+            onDismiss = vm::closeEditCalendar,
+            onSave = vm::saveCalendarProps,
+            onDelete = vm::deleteCalendarConfirmed,
+            onSearchSharees = vm::searchSharees,
+            onAddSharee = vm::addSharee,
+            onRemoveSharee = vm::removeSharee,
         )
     }
 
@@ -287,6 +332,11 @@ fun CalendarScreen(
                     onSyncNow = {
                         if (!hasCalendarPermission()) requestCalendarPermissions() else vm.runSyncNow()
                     },
+                    onEditCalendar = { cal ->
+                        onSidebarOpenChange(false)
+                        scope.launch { drawerState.close() }
+                        vm.openEditCalendar(cal)
+                    },
                 )
             }
         },

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/CalendarViewModel.kt

@@ -45,6 +45,23 @@ data class CalendarUiState(
     val unscheduledTasks: List<CalendarTaskItem> = emptyList(),
     val attendeeSuggestions: List<CalendarAttendeeSuggestion> = emptyList(),
     val locationSuggestions: List<CalendarLocationSuggestion> = emptyList(),
+    val talkPickerOpen: Boolean = false,
+    val talkPickerLoading: Boolean = false,
+    val talkRooms: List<CalendarTalkRoom> = emptyList(),
+    val attachmentUploading: Boolean = false,
+    val editCalendarOpen: Boolean = false,
+    val editCalendarTarget: CalendarBookItem? = null,
+    val editCalendarShares: List<ru.forbion.f7cloud.core.network.CalDavClient.DavSharee> = emptyList(),
+    val shareeSuggestions: List<CalendarShareeSuggestion> = emptyList(),
+    val editCalendarBusy: Boolean = false,
+    val freeBusyOpen: Boolean = false,
+    val freeBusyLoading: Boolean = false,
+    val freeBusyError: String? = null,
+    val freeBusyResult: Map<String, List<ru.forbion.f7cloud.core.network.CalDavClient.BusyPeriod>> = emptyMap(),
+    val filesPickerOpen: Boolean = false,
+    val filesPickerLoading: Boolean = false,
+    val filesPickerPath: String = "",
+    val filesPickerEntries: List<ru.forbion.f7cloud.core.network.DavClient.DavEntry> = emptyList(),
     val userSettings: CalendarUserSettings = CalendarUserSettings(),
     val saving: Boolean = false,
     val deleting: Boolean = false,
@@ -362,7 +379,7 @@ class CalendarViewModel(
             eventDraft = CalendarEventDraft(
                 date = targetDay,
                 calendarHref = createHref,
-                reminderMinutes = _state.value.userSettings.defaultReminderMinutes,
+                reminders = listOf(_state.value.userSettings.defaultReminderMinutes),
             ),
         )
     }
@@ -410,6 +427,212 @@ class CalendarViewModel(
         _state.value = _state.value.copy(locationSuggestions = emptyList())
     }
 
+    fun openTalkPicker() {
+        val s = session ?: return
+        _state.value = _state.value.copy(talkPickerOpen = true, talkPickerLoading = true, talkRooms = emptyList())
+        viewModelScope.launch(Dispatchers.IO) {
+            val rooms = runCatching { repository.listTalkRooms(s) }.getOrDefault(emptyList())
+            _state.value = _state.value.copy(talkRooms = rooms, talkPickerLoading = false)
+        }
+    }
+
+    fun closeTalkPicker() { _state.value = _state.value.copy(talkPickerOpen = false) }
+
+    fun selectTalkRoom(room: CalendarTalkRoom) {
+        updateEventDraft { it.copy(talkRoomUrl = room.callUrl, addTalkRoom = false, location = it.location.ifBlank { room.callUrl }) }
+        _state.value = _state.value.copy(talkPickerOpen = false)
+    }
+
+    /** roomType: 2 — публичная беседа, 3 — приватная (в терминах spreed). */
+    fun createTalkConversation(roomType: Int) {
+        val s = session ?: return
+        val name = _state.value.eventDraft.title.ifBlank { "Встреча" }
+        _state.value = _state.value.copy(talkPickerLoading = true)
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.createTalkRoomTyped(s, name, roomType) }
+                .onSuccess { room ->
+                    updateEventDraft { it.copy(talkRoomUrl = room.callUrl, addTalkRoom = false, location = it.location.ifBlank { room.callUrl }) }
+                    _state.value = _state.value.copy(talkPickerOpen = false, talkPickerLoading = false)
+                }
+                .onFailure { _state.value = _state.value.copy(talkPickerLoading = false, snackMessage = "Не удалось создать беседу") }
+        }
+    }
+
+    // --- Управление календарём ---
+    fun openEditCalendar(cal: CalendarBookItem) {
+        val s = session ?: return
+        _state.value = _state.value.copy(
+            editCalendarOpen = true,
+            editCalendarTarget = cal,
+            editCalendarShares = emptyList(),
+            shareeSuggestions = emptyList(),
+        )
+        viewModelScope.launch(Dispatchers.IO) {
+            val shares = runCatching { repository.listCalendarShares(s, cal.href) }.getOrDefault(emptyList())
+            _state.value = _state.value.copy(editCalendarShares = shares)
+        }
+    }
+
+    fun closeEditCalendar() {
+        _state.value = _state.value.copy(editCalendarOpen = false, editCalendarTarget = null, shareeSuggestions = emptyList())
+    }
+
+    fun saveCalendarProps(displayName: String, color: String?) {
+        val s = session ?: return
+        val target = _state.value.editCalendarTarget ?: return
+        _state.value = _state.value.copy(editCalendarBusy = true)
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching {
+                repository.updateCalendarProps(
+                    s,
+                    target.href,
+                    displayName.trim().takeIf { it.isNotBlank() && it != target.displayName },
+                    color?.takeIf { it != target.color },
+                )
+            }
+                .onSuccess {
+                    loadCalendars(s)
+                    _state.value = _state.value.copy(editCalendarBusy = false, editCalendarOpen = false, editCalendarTarget = null, snackMessage = "Календарь обновлён")
+                }
+                .onFailure { _state.value = _state.value.copy(editCalendarBusy = false, snackMessage = "Не удалось обновить: ${it.message}") }
+        }
+    }
+
+    fun deleteCalendarConfirmed() {
+        val s = session ?: return
+        val target = _state.value.editCalendarTarget ?: return
+        _state.value = _state.value.copy(editCalendarBusy = true)
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.deleteCalendar(s, target.href) }
+                .onSuccess {
+                    loadCalendars(s)
+                    reloadEvents(s)
+                    _state.value = _state.value.copy(editCalendarBusy = false, editCalendarOpen = false, editCalendarTarget = null, snackMessage = "Календарь удалён")
+                }
+                .onFailure { _state.value = _state.value.copy(editCalendarBusy = false, snackMessage = "Не удалось удалить: ${it.message}") }
+        }
+    }
+
+    fun searchSharees(query: String) {
+        val s = session ?: return
+        viewModelScope.launch(Dispatchers.IO) {
+            val found = runCatching { repository.searchSharees(s, query) }.getOrDefault(emptyList())
+            _state.value = _state.value.copy(shareeSuggestions = found)
+        }
+    }
+
+    fun addSharee(sharee: CalendarShareeSuggestion, writable: Boolean) {
+        val s = session ?: return
+        val target = _state.value.editCalendarTarget ?: return
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.shareCalendar(s, target.href, sharee.principal, writable) }
+                .onSuccess {
+                    val shares = runCatching { repository.listCalendarShares(s, target.href) }.getOrDefault(emptyList())
+                    _state.value = _state.value.copy(editCalendarShares = shares, shareeSuggestions = emptyList())
+                }
+                .onFailure { _state.value = _state.value.copy(snackMessage = "Не удалось пошарить: ${it.message}") }
+        }
+    }
+
+    fun removeSharee(principal: String) {
+        val s = session ?: return
+        val target = _state.value.editCalendarTarget ?: return
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.unshareCalendar(s, target.href, principal) }
+                .onSuccess {
+                    _state.value = _state.value.copy(
+                        editCalendarShares = _state.value.editCalendarShares.filterNot { it.principal == principal },
+                    )
+                }
+                .onFailure { _state.value = _state.value.copy(snackMessage = "Не удалось убрать доступ: ${it.message}") }
+        }
+    }
+
+    // --- Занятость участников (free/busy) ---
+    fun openFreeBusy() {
+        val s = session ?: return
+        val draft = _state.value.eventDraft
+        val emails = draft.attendees.map { it.email }.filter { it.isNotBlank() }
+        if (emails.isEmpty()) return
+        _state.value = _state.value.copy(freeBusyOpen = true, freeBusyLoading = true, freeBusyError = null, freeBusyResult = emptyMap())
+        val zone = ZoneId.systemDefault()
+        // Диапазон — весь день события (локальные сутки).
+        val start = draft.date.atStartOfDay(zone).toInstant()
+        val end = draft.date.plusDays(1).atStartOfDay(zone).toInstant()
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.freeBusy(s, emails, start, end) }
+                .onSuccess { _state.value = _state.value.copy(freeBusyResult = it, freeBusyLoading = false) }
+                .onFailure { _state.value = _state.value.copy(freeBusyLoading = false, freeBusyError = it.message) }
+        }
+    }
+
+    fun closeFreeBusy() { _state.value = _state.value.copy(freeBusyOpen = false) }
+
+    // --- Вложения ---
+    fun uploadDeviceAttachment(uri: android.net.Uri) {
+        val s = session ?: return
+        _state.value = _state.value.copy(attachmentUploading = true)
+        viewModelScope.launch(Dispatchers.IO) {
+            val resolver = appContext.contentResolver
+            val name = queryDisplayName(uri) ?: "attachment"
+            val mime = resolver.getType(uri).orEmpty()
+            val bytes = runCatching { resolver.openInputStream(uri)?.use { it.readBytes() } }.getOrNull()
+            if (bytes == null || bytes.isEmpty()) {
+                _state.value = _state.value.copy(attachmentUploading = false, snackMessage = "Не удалось прочитать файл")
+                return@launch
+            }
+            runCatching { repository.uploadAttachment(s, name, mime, bytes) }
+                .onSuccess { item ->
+                    updateEventDraft { it.copy(attachments = it.attachments + item) }
+                    _state.value = _state.value.copy(attachmentUploading = false, snackMessage = "Файл загружен")
+                }
+                .onFailure { _state.value = _state.value.copy(attachmentUploading = false, snackMessage = "Ошибка загрузки: ${it.message}") }
+        }
+    }
+
+    fun openFilesPicker() {
+        _state.value = _state.value.copy(filesPickerOpen = true)
+        loadFilesPicker("")
+    }
+
+    fun closeFilesPicker() { _state.value = _state.value.copy(filesPickerOpen = false) }
+
+    fun navigateFilesPicker(path: String) = loadFilesPicker(path)
+
+    private fun loadFilesPicker(path: String) {
+        val s = session ?: return
+        _state.value = _state.value.copy(filesPickerLoading = true, filesPickerPath = path)
+        viewModelScope.launch(Dispatchers.IO) {
+            val entries = runCatching { repository.listUserFiles(s, path) }.getOrDefault(emptyList())
+            _state.value = _state.value.copy(filesPickerEntries = entries, filesPickerLoading = false)
+        }
+    }
+
+    fun pickFileAttachment(entry: ru.forbion.f7cloud.core.network.DavClient.DavEntry) {
+        val s = session ?: return
+        val path = _state.value.filesPickerPath
+        val rel = if (path.isBlank()) entry.name else "$path/${entry.name}"
+        viewModelScope.launch(Dispatchers.IO) {
+            runCatching { repository.fileAttachment(s, rel, entry.mimeType.orEmpty()) }
+                .onSuccess { item ->
+                    updateEventDraft { it.copy(attachments = it.attachments + item) }
+                    _state.value = _state.value.copy(filesPickerOpen = false, snackMessage = "Файл прикреплён")
+                }
+        }
+    }
+
+    fun removeAttachment(url: String) {
+        updateEventDraft { d -> d.copy(attachments = d.attachments.filterNot { it.url == url }) }
+    }
+
+    private fun queryDisplayName(uri: android.net.Uri): String? =
+        runCatching {
+            appContext.contentResolver.query(uri, null, null, null, null)?.use { cursor ->
+                val idx = cursor.getColumnIndex(android.provider.OpenableColumns.DISPLAY_NAME)
+                if (idx >= 0 && cursor.moveToFirst()) cursor.getString(idx) else null
+            }
+        }.getOrNull() ?: uri.lastPathSegment
+
     fun openEventDetail(event: CalendarEventItem) {
         _state.value = _state.value.copy(eventDetail = event, focusedEventUid = event.uid)
     }
@@ -428,6 +651,11 @@ class CalendarViewModel(
             eventDraft = CalendarEventDraft(
                 title = event.summary,
                 date = start.toLocalDate(),
+                // DTEND эксклюзивен для all-day → показываем последний включённый день.
+                endDate = run {
+                    val endDay = if (event.allDay) end.toLocalDate().minusDays(1) else end.toLocalDate()
+                    endDay.coerceAtLeast(start.toLocalDate()).takeIf { it != start.toLocalDate() }
+                },
                 startTime = start.format(DateTimeFormatter.ofPattern("HH:mm")),
                 endTime = end.format(DateTimeFormatter.ofPattern("HH:mm")),
                 allDay = event.allDay,
@@ -440,9 +668,10 @@ class CalendarViewModel(
                 status = EventStatus.entries.firstOrNull { it.icsValue == event.status } ?: EventStatus.CONFIRMED,
                 classification = EventClassification.entries.firstOrNull { it.icsValue == event.classification } ?: EventClassification.PUBLIC,
                 attendees = event.attendees,
-                reminderMinutes = event.alarms.firstOrNull()?.minutesBefore ?: 15,
+                reminders = event.alarms.map { it.minutesBefore }.ifEmpty { emptyList() },
                 talkRoomUrl = event.talkRoomUrl,
                 addTalkRoom = event.talkRoomUrl.isNotBlank(),
+                attachments = event.attachments,
             ),
             focusedEventUid = event.uid,
         )
@@ -541,10 +770,10 @@ class CalendarViewModel(
             CalendarViewMode.LIST -> "Предстоящие события"
             CalendarViewMode.WEEK -> {
                 val (start, end) = CalendarRepository.weekRange(st.selectedDay)
-                "${start.format(DateTimeFormatter.ofPattern("MMM d", Locale.ENGLISH))} – ${end.format(DateTimeFormatter.ofPattern("MMM d, yyyy", Locale.ENGLISH))}"
+                "${start.format(DateTimeFormatter.ofPattern("d MMM", RU))} – ${end.format(DateTimeFormatter.ofPattern("d MMM yyyy", RU))}"
             }
             CalendarViewMode.DAY, CalendarViewMode.MONTH ->
-                st.selectedDay.format(DateTimeFormatter.ofPattern("MMM d, yyyy", Locale.ENGLISH))
+                st.selectedDay.format(DateTimeFormatter.ofPattern("d MMMM yyyy", RU))
         }
     }
 
@@ -642,6 +871,7 @@ class CalendarViewModel(
 
     companion object {
         private const val REFRESH_INTERVAL_MS = 5 * 60 * 1000L
-        val monthTitleFormatter = DateTimeFormatter.ofPattern("LLLL yyyy", Locale.forLanguageTag("ru"))
+        private val RU: Locale = Locale.forLanguageTag("ru")
+        val monthTitleFormatter = DateTimeFormatter.ofPattern("LLLL yyyy", RU)
     }
 }

feature/calendar/src/main/java/ru/forbion/f7cloud/feature/calendar/RecurrenceRule.kt

@@ -0,0 +1,88 @@
+package ru.forbion.f7cloud.feature.calendar
+
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
+/** Разобранное правило повторения (подмножество RFC 5545 RRULE, как в веб-версии). */
+data class RecurrenceRule(
+    val freq: String = "WEEKLY", // DAILY | WEEKLY | MONTHLY | YEARLY
+    val interval: Int = 1,
+    /** Дни недели для WEEKLY: MO..SU (порядок как в ICS). */
+    val byDays: Set<String> = emptySet(),
+    val endType: EndType = EndType.NEVER,
+    val untilDate: LocalDate? = null,
+    val count: Int = 10,
+) {
+    enum class EndType { NEVER, UNTIL, COUNT }
+
+    fun toRrule(): String = buildString {
+        append("FREQ=$freq")
+        if (interval > 1) append(";INTERVAL=$interval")
+        if (freq == "WEEKLY" && byDays.isNotEmpty()) {
+            append(";BYDAY=${ICS_DAYS.filter { it in byDays }.joinToString(",")}")
+        }
+        when (endType) {
+            EndType.UNTIL -> untilDate?.let { append(";UNTIL=${it.format(UNTIL_FMT)}T235959Z") }
+            EndType.COUNT -> append(";COUNT=${count.coerceAtLeast(1)}")
+            EndType.NEVER -> Unit
+        }
+    }
+
+    companion object {
+        val ICS_DAYS = listOf("MO", "TU", "WE", "TH", "FR", "SA", "SU")
+        val DAY_LABELS = mapOf(
+            "MO" to "Пн", "TU" to "Вт", "WE" to "Ср", "TH" to "Чт",
+            "FR" to "Пт", "SA" to "Сб", "SU" to "Вс",
+        )
+        private val UNTIL_FMT = DateTimeFormatter.BASIC_ISO_DATE
+
+        /** Парсинг RRULE-строки; null для пустой/неразбираемой. */
+        fun parse(rrule: String): RecurrenceRule? {
+            if (rrule.isBlank()) return null
+            val parts = rrule.trim().removePrefix("RRULE:").split(';')
+                .mapNotNull { p ->
+                    val idx = p.indexOf('=')
+                    if (idx <= 0) null else p.substring(0, idx).uppercase() to p.substring(idx + 1)
+                }.toMap()
+            val freq = parts["FREQ"]?.uppercase() ?: return null
+            if (freq !in setOf("DAILY", "WEEKLY", "MONTHLY", "YEARLY")) return null
+            val until = parts["UNTIL"]?.let { raw ->
+                runCatching { LocalDate.parse(raw.take(8), UNTIL_FMT) }.getOrNull()
+            }
+            val count = parts["COUNT"]?.toIntOrNull()
+            return RecurrenceRule(
+                freq = freq,
+                interval = parts["INTERVAL"]?.toIntOrNull()?.coerceAtLeast(1) ?: 1,
+                byDays = parts["BYDAY"]?.split(',')?.map { it.trim().takeLast(2).uppercase() }
+                    ?.filter { it in ICS_DAYS }?.toSet().orEmpty(),
+                endType = when {
+                    until != null -> EndType.UNTIL
+                    count != null -> EndType.COUNT
+                    else -> EndType.NEVER
+                },
+                untilDate = until,
+                count = count ?: 10,
+            )
+        }
+
+        /** Человекочитаемое описание правила по-русски (для пилюли «Повторение»). */
+        fun describe(rrule: String): String {
+            val rule = parse(rrule) ?: return "Не повторять"
+            val freqLabel = when (rule.freq) {
+                "DAILY" -> if (rule.interval == 1) "Каждый день" else "Каждые ${rule.interval} дн."
+                "WEEKLY" -> if (rule.interval == 1) "Каждую неделю" else "Каждые ${rule.interval} нед."
+                "MONTHLY" -> if (rule.interval == 1) "Каждый месяц" else "Каждые ${rule.interval} мес."
+                else -> if (rule.interval == 1) "Каждый год" else "Каждые ${rule.interval} г."
+            }
+            val days = if (rule.freq == "WEEKLY" && rule.byDays.isNotEmpty()) {
+                " по " + ICS_DAYS.filter { it in rule.byDays }.joinToString(", ") { DAY_LABELS[it] ?: it }
+            } else ""
+            val end = when (rule.endType) {
+                EndType.UNTIL -> rule.untilDate?.let { " до ${it.format(DateTimeFormatter.ofPattern("dd.MM.yyyy"))}" }.orEmpty()
+                EndType.COUNT -> ", ${rule.count} раз"
+                EndType.NEVER -> ""
+            }
+            return freqLabel + days + end
+        }
+    }
+}

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/FilesScreen.kt

@@ -16,6 +16,7 @@ import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.grid.GridCells
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items as gridItems
+import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.pulltorefresh.PullToRefreshBox
@@ -113,6 +114,7 @@ fun FilesScreen(
 
     LaunchedEffect(session.serverUrl, session.username, session.davUserId) {
         OfficeWarmup.warm(session)
+        OfficeWarmup.warmWebViewEngine(context) // прогрев WebView-движка для быстрого docx/xlsx
         vm.load(session)
         vm.loadSidebarData(session)
     }
@@ -241,7 +243,12 @@ fun FilesScreen(
                 ) {
                     val openItem: (FileItem) -> Unit = { item ->
                         val openable = !item.isDirectory &&
-                            (OfficeFiles.isOfficeFile(item.name) || OpenableFiles.isOpenable(item.name))
+                            (
+                                OfficeFiles.isOfficeFile(item.name) ||
+                                    MarkdownFiles.isMarkdown(item.name) ||
+                                    WebOpenableFiles.isWebOpenable(item.name) ||
+                                    OpenableFiles.isOpenable(item.name)
+                                )
                         when {
                             item.isDirectory -> vm.openFolder(session, item)
                             openable -> vm.openItem(session, item)
@@ -472,4 +479,14 @@ fun FilesScreen(
             )
         }
     }
+
+    // Нативный редактор markdown/текста поверх всего (быстрый, вместо тяжёлого веб-Text)
+    state.markdownDoc?.let { doc ->
+        BackHandler { vm.closeMarkdown() }
+        MarkdownEditorScreen(
+            session = session,
+            doc = doc,
+            onClose = { vm.closeMarkdown() },
+        )
+    }
 }

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/FilesUiState.kt

@@ -20,6 +20,8 @@ data class FilesUiState(
     val openingFile: String? = null,
     val editorLaunch: OfficeEditorLaunch? = null,
     val openAction: FileOpenAction? = null,
+    // Нативный markdown-редактор: открытый текстовый файл (путь + имя).
+    val markdownDoc: MarkdownDoc? = null,
     val searchQuery: String = "",
     val searchResults: List<FilesSearchHit> = emptyList(),
     val searchActive: Boolean = false,

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/FilesViewModel.kt

@@ -487,6 +487,8 @@ class FilesViewModel(
         if (item.isDirectory) return
         when {
             OfficeFiles.isOfficeFile(item.name) -> openOfficeFile(session, item)
+            MarkdownFiles.isMarkdown(item.name) -> openMarkdown(item)
+            WebOpenableFiles.isWebOpenable(item.name) -> openWebFile(session, item)
             ArchiveFiles.isArchive(item.name) -> openArchiveFile(session, item)
             OpenableFiles.isImage(item.name) -> openImageFile(session, item)
             else -> _state.value = _state.value.copy(
@@ -495,6 +497,37 @@ class FilesViewModel(
         }
     }
 
+    /** Markdown/текст — нативный редактор (мгновенно, WebDAV). */
+    private fun openMarkdown(item: FileItem) {
+        _state.value = _state.value.copy(
+            markdownDoc = MarkdownDoc(relativePath = item.relativePath, name = item.name),
+        )
+    }
+
+    fun closeMarkdown() {
+        _state.value = _state.value.copy(markdownDoc = null)
+    }
+
+    /** Markdown/текст/доска — открываем каноническую ссылку /f/<id> в авторизованном WebView. */
+    private fun openWebFile(session: AuthSession, item: FileItem) {
+        val fileId = item.fileId ?: run {
+            _state.value = _state.value.copy(error = "Не удалось определить ID файла")
+            return
+        }
+        val base = session.serverUrl.trimEnd('/')
+        _state.value = _state.value.copy(
+            editorLaunch = OfficeEditorLaunch(
+                url = "$base/index.php/f/$fileId",
+                title = item.name,
+                username = session.username,
+                password = session.appPassword,
+                trustAllCerts = session.trustAllCerts,
+                serverUrl = session.serverUrl,
+                collaboraBaseUrl = "",
+            ),
+        )
+    }
+
     private fun openOfficeFile(session: AuthSession, item: FileItem) {
         val fileId = item.fileId ?: run {
             _state.value = _state.value.copy(error = "Не удалось определить ID файла")

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/MarkdownEditorScreen.kt

@@ -0,0 +1,244 @@
+package ru.forbion.f7cloud.feature.files
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.withStyle
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import ru.forbion.f7cloud.core.auth.AuthSession
+import ru.forbion.f7cloud.core.designsystem.F7Colors
+import ru.forbion.f7cloud.core.designsystem.f7SafeTopInsets
+
+/**
+ * Нативный редактор markdown/текста: качает содержимое по WebDAV (мгновенно), правка в
+ * TextField, предпросмотр с базовым рендером, сохранение по WebDAV PUT. Заменяет тяжёлый
+ * веб-редактор Text (который «вечно грузился», т.к. тянул весь Files UI).
+ */
+@Composable
+fun MarkdownEditorScreen(
+    session: AuthSession,
+    doc: MarkdownDoc,
+    onClose: () -> Unit,
+    repository: MarkdownRepository = remember { MarkdownRepository() },
+) {
+    var text by remember(doc.relativePath) { mutableStateOf("") }
+    var loading by remember(doc.relativePath) { mutableStateOf(true) }
+    var saving by remember { mutableStateOf(false) }
+    var error by remember { mutableStateOf<String?>(null) }
+    var preview by remember { mutableStateOf(false) }
+    var dirty by remember(doc.relativePath) { mutableStateOf(false) }
+    val scope = rememberCoroutineScope()
+    val isMd = doc.name.substringAfterLast('.', "").lowercase() in setOf("md", "markdown")
+
+    LaunchedEffect(doc.relativePath) {
+        loading = true
+        error = null
+        runCatching { withContext(Dispatchers.IO) { repository.load(session, doc.relativePath) } }
+            .onSuccess { text = it; loading = false }
+            .onFailure { error = it.message ?: "Ошибка загрузки"; loading = false }
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(F7Colors.Background)
+            .f7SafeTopInsets(),
+    ) {
+        // Шапка: назад, имя, предпросмотр (для md), сохранить
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 12.dp, vertical = 10.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(8.dp),
+        ) {
+            Icon(
+                Icons.AutoMirrored.Filled.ArrowBack,
+                contentDescription = "Назад",
+                tint = F7Colors.TextPrimary,
+                modifier = Modifier.size(24.dp).clickable(onClick = onClose),
+            )
+            Text(
+                doc.name,
+                modifier = Modifier.weight(1f),
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.SemiBold,
+                color = F7Colors.TextPrimary,
+                maxLines = 1,
+            )
+            if (isMd) {
+                Box(
+                    modifier = Modifier
+                        .clip(RoundedCornerShape(100.dp))
+                        .background(if (preview) F7Colors.PrimaryLight else F7Colors.SurfaceMuted)
+                        .clickable { preview = !preview }
+                        .padding(horizontal = 12.dp, vertical = 6.dp),
+                ) {
+                    Text(
+                        if (preview) "Правка" else "Просмотр",
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = F7Colors.TextPrimary,
+                    )
+                }
+            }
+            Box(
+                modifier = Modifier
+                    .clip(RoundedCornerShape(100.dp))
+                    .background(if (dirty && !saving) F7Colors.Primary else F7Colors.SurfaceMuted)
+                    .clickable(enabled = dirty && !saving) {
+                        saving = true
+                        error = null
+                        scope.launch {
+                            runCatching {
+                                withContext(Dispatchers.IO) { repository.save(session, doc.relativePath, text) }
+                            }.onSuccess { saving = false; dirty = false }
+                                .onFailure { error = it.message ?: "Ошибка сохранения"; saving = false }
+                        }
+                    }
+                    .padding(horizontal = 14.dp, vertical = 6.dp),
+            ) {
+                Text(
+                    if (saving) "…" else "Сохранить",
+                    style = MaterialTheme.typography.bodyMedium,
+                    fontWeight = FontWeight.Medium,
+                    color = if (dirty && !saving) androidx.compose.ui.graphics.Color.White else F7Colors.TextSecondary,
+                )
+            }
+        }
+        error?.let {
+            Text(it, color = F7Colors.Error, modifier = Modifier.padding(horizontal = 16.dp, vertical = 4.dp))
+        }
+
+        when {
+            loading -> Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                CircularProgressIndicator(color = F7Colors.Primary)
+            }
+            preview && isMd -> {
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .verticalScroll(rememberScrollState())
+                        .padding(16.dp),
+                ) {
+                    Text(renderMarkdown(text), style = MaterialTheme.typography.bodyLarge, color = F7Colors.TextPrimary)
+                }
+            }
+            else -> {
+                BasicTextField(
+                    value = text,
+                    onValueChange = { text = it; dirty = true },
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(16.dp),
+                    textStyle = TextStyle(
+                        fontSize = 15.sp,
+                        lineHeight = 22.sp,
+                        color = F7Colors.TextPrimary,
+                        fontFamily = if (isMd) FontFamily.Monospace else FontFamily.Default,
+                    ),
+                    cursorBrush = SolidColor(F7Colors.Primary),
+                )
+            }
+        }
+    }
+}
+
+/** Лёгкий рендер markdown → AnnotatedString: заголовки, жирный/курсив, списки, код, цитаты. */
+private fun renderMarkdown(src: String): AnnotatedString = buildAnnotatedString {
+    src.lineSequence().forEachIndexed { index, raw ->
+        if (index > 0) append("\n")
+        val line = raw.trimEnd()
+        when {
+            line.startsWith("### ") -> withStyle(SpanStyle(fontSize = 16.sp, fontWeight = FontWeight.Bold)) {
+                append(line.removePrefix("### "))
+            }
+            line.startsWith("## ") -> withStyle(SpanStyle(fontSize = 18.sp, fontWeight = FontWeight.Bold)) {
+                append(line.removePrefix("## "))
+            }
+            line.startsWith("# ") -> withStyle(SpanStyle(fontSize = 22.sp, fontWeight = FontWeight.Bold)) {
+                append(line.removePrefix("# "))
+            }
+            line.startsWith("> ") -> withStyle(
+                SpanStyle(fontStyle = FontStyle.Italic, color = androidx.compose.ui.graphics.Color(0xFF808080)),
+            ) { append(line.removePrefix("> ")) }
+            line.startsWith("- ") || line.startsWith("* ") -> {
+                append("•  ")
+                appendInline(line.drop(2))
+            }
+            line.matches(Regex("^\\d+\\. .*")) -> appendInline(line)
+            line.startsWith("```") -> withStyle(SpanStyle(fontFamily = FontFamily.Monospace)) { append(line) }
+            else -> appendInline(line)
+        }
+    }
+}
+
+/** Инлайн-разметка: **жирный**, *курсив*, `код`. */
+private fun androidx.compose.ui.text.AnnotatedString.Builder.appendInline(text: String) {
+    var i = 0
+    while (i < text.length) {
+        when {
+            text.startsWith("**", i) -> {
+                val end = text.indexOf("**", i + 2)
+                if (end > 0) {
+                    withStyle(SpanStyle(fontWeight = FontWeight.Bold)) { append(text.substring(i + 2, end)) }
+                    i = end + 2
+                } else { append(text[i]); i++ }
+            }
+            text[i] == '*' -> {
+                val end = text.indexOf('*', i + 1)
+                if (end > 0) {
+                    withStyle(SpanStyle(fontStyle = FontStyle.Italic)) { append(text.substring(i + 1, end)) }
+                    i = end + 1
+                } else { append(text[i]); i++ }
+            }
+            text[i] == '`' -> {
+                val end = text.indexOf('`', i + 1)
+                if (end > 0) {
+                    withStyle(SpanStyle(fontFamily = FontFamily.Monospace)) { append(text.substring(i + 1, end)) }
+                    i = end + 1
+                } else { append(text[i]); i++ }
+            }
+            else -> { append(text[i]); i++ }
+        }
+    }
+}

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/MarkdownRepository.kt

@@ -0,0 +1,46 @@
+package ru.forbion.f7cloud.feature.files
+
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.Request
+import okhttp3.RequestBody.Companion.toRequestBody
+import ru.forbion.f7cloud.core.auth.AuthSession
+import ru.forbion.f7cloud.core.auth.OcsUserResolver
+import ru.forbion.f7cloud.core.network.NetworkFactory
+import ru.forbion.f7cloud.core.network.davFileUrl
+
+/**
+ * Нативная работа с текстовыми/markdown-файлами по WebDAV — быстро, без тяжёлого веб-редактора
+ * (веб Text грузил весь Files UI). Просто GET текста и PUT при сохранении.
+ */
+class MarkdownRepository {
+    private fun client(session: AuthSession) =
+        NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+
+    private fun url(session: AuthSession, relativePath: String): String {
+        val userId = session.davUserId ?: OcsUserResolver.resolveDavUserId(session)
+        return davFileUrl(session.serverUrl, userId, relativePath)
+    }
+
+    fun load(session: AuthSession, relativePath: String): String {
+        val request = Request.Builder().url(url(session, relativePath)).header("Accept", "*/*").get().build()
+        client(session).newCall(request).execute().use { response ->
+            if (!response.isSuccessful || response.body == null) {
+                error("Не удалось загрузить файл (HTTP ${response.code})")
+            }
+            return response.body!!.string()
+        }
+    }
+
+    fun save(session: AuthSession, relativePath: String, content: String) {
+        val media = "text/markdown; charset=utf-8".toMediaType()
+        val request = Request.Builder()
+            .url(url(session, relativePath))
+            .put(content.toRequestBody(media))
+            .build()
+        client(session).newCall(request).execute().use { response ->
+            if (response.code !in 200..299 && response.code != 204) {
+                error("Не удалось сохранить (HTTP ${response.code})")
+            }
+        }
+    }
+}

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/OfficeWarmup.kt

@@ -63,6 +63,23 @@ object OfficeWarmup {
         }
     }
 
+    @Volatile
+    private var engineWarmed = false
+
+    /**
+     * Прогрев WebView-движка: ПЕРВОЕ создание WebView в процессе тянет провайдер Chromium
+     * (сотни мс), из-за чего первый docx/xlsx открывается медленно. Создаём и сразу уничтожаем
+     * пустой WebView заранее (при входе в Файлы) — движок загружается в фоне. Только UI-поток.
+     */
+    fun warmWebViewEngine(context: android.content.Context) {
+        if (engineWarmed) return
+        engineWarmed = true
+        runCatching {
+            val wv = android.webkit.WebView(context.applicationContext)
+            wv.destroy()
+        }
+    }
+
     fun clear() {
         cachedServerUrl = null
         cachedCollaboraUrl = null

feature/files/src/main/java/ru/forbion/f7cloud/feature/files/WebOpenableFiles.kt

@@ -0,0 +1,27 @@
+package ru.forbion.f7cloud.feature.files
+
+/**
+ * Файлы, открываемые во ВЕБ-вьюере Nextcloud по ссылке `/index.php/f/<fileId>` — сервер
+ * направляет в нужное приложение. Сейчас это только доска (Whiteboard, Excalidraw-канвас
+ * с реалтайм-бэкендом — нативно не реализуется). Markdown/текст — нативно, см. [MarkdownFiles].
+ */
+object WebOpenableFiles {
+    private val EXTENSIONS = setOf("whiteboard")
+
+    fun isWebOpenable(name: String): Boolean =
+        name.substringAfterLast('.', "").lowercase() in EXTENSIONS
+}
+
+/** Текстовые/markdown-файлы — открываются в НАТИВНОМ редакторе (быстро, WebDAV). */
+object MarkdownFiles {
+    private val EXTENSIONS = setOf("md", "markdown", "txt", "text", "org", "log")
+
+    fun isMarkdown(name: String): Boolean =
+        name.substringAfterLast('.', "").lowercase() in EXTENSIONS
+}
+
+/** Открытый в нативном редакторе текстовый файл. */
+data class MarkdownDoc(
+    val relativePath: String,
+    val name: String,
+)

feature/tasks/src/main/java/ru/forbion/f7cloud/feature/tasks/TasksCache.kt

@@ -0,0 +1,28 @@
+package ru.forbion.f7cloud.feature.tasks
+
+/**
+ * Лёгкий кэш в памяти на время жизни процесса: списки задач и задачи по каждому списку.
+ * VM пересоздаётся при каждом открытии раздела Задач — без кэша это полный PROPFIND+REPORT
+ * заново. Кэш даёт мгновенный показ, сеть обновляет в фоне.
+ */
+internal object TasksCache {
+    @Volatile
+    private var lists: List<TaskListItem>? = null
+    private val tasksByList = java.util.concurrent.ConcurrentHashMap<String, List<TaskItem>>()
+
+    fun cachedLists(): List<TaskListItem>? = lists
+
+    fun putLists(value: List<TaskListItem>) {
+        lists = value
+    }
+
+    fun cachedTasks(listHref: String): List<TaskItem>? = tasksByList[listHref]
+
+    fun putTasks(listHref: String, value: List<TaskItem>) {
+        tasksByList[listHref] = value
+    }
+
+    fun invalidateTasks(listHref: String) {
+        tasksByList.remove(listHref)
+    }
+}

feature/tasks/src/main/java/ru/forbion/f7cloud/feature/tasks/TasksComponents.kt

@@ -4,6 +4,7 @@ import androidx.compose.animation.animateContentSize
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -345,7 +346,10 @@ fun TasksRow(
     onToggleComplete: () -> Unit,
     onOpen: () -> Unit,
     modifier: Modifier = Modifier,
+    onAddSubtask: (() -> Unit)? = null,
+    onDelete: (() -> Unit)? = null,
 ) {
+    var menuOpen by remember { mutableStateOf(false) }
     val hasMeta = showMeta && (task.listName.isNotBlank() || task.percentComplete in 1..99 || task.due.isNotBlank())
     Column(
         modifier = modifier
@@ -401,6 +405,43 @@ fun TasksRow(
                         color = task.dueDateColor(),
                     )
                 }
+                // Меню «⋯»: вложенная задача / удалить (как в веб-версии)
+                if (onAddSubtask != null || onDelete != null) {
+                    Box {
+                        Text(
+                            "⋯",
+                            fontSize = 20.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = F7Colors.TextSecondary,
+                            modifier = Modifier
+                                .size(24.dp)
+                                .clickable(
+                                    interactionSource = remember { MutableInteractionSource() },
+                                    indication = null,
+                                    onClick = { menuOpen = true },
+                                ),
+                            textAlign = androidx.compose.ui.text.style.TextAlign.Center,
+                        )
+                        androidx.compose.material3.DropdownMenu(
+                            expanded = menuOpen,
+                            onDismissRequest = { menuOpen = false },
+                            containerColor = androidx.compose.ui.graphics.Color.White,
+                        ) {
+                            onAddSubtask?.let { add ->
+                                androidx.compose.material3.DropdownMenuItem(
+                                    text = { Text("Добавить вложенную задачу", color = F7Colors.TextPrimary) },
+                                    onClick = { menuOpen = false; add() },
+                                )
+                            }
+                            onDelete?.let { del ->
+                                androidx.compose.material3.DropdownMenuItem(
+                                    text = { Text("Удалить задачу", color = F7Colors.Error) },
+                                    onClick = { menuOpen = false; del() },
+                                )
+                            }
+                        }
+                    }
+                }
             }
         }
         if (hasMeta) {
@@ -1064,3 +1105,42 @@ private fun SmartListSettingRow(
         }
     }
 }
+
+/** Диалог создания вложенной задачи (подзадачи) — по кнопке «Добавить вложенную задачу». */
+@Composable
+fun TaskSubtaskDialog(
+    parentTitle: String,
+    onConfirm: (String) -> Unit,
+    onDismiss: () -> Unit,
+) {
+    var text by remember { mutableStateOf("") }
+    Dialog(onDismissRequest = onDismiss) {
+        Surface(shape = RoundedCornerShape(16.dp), color = Color.White) {
+            Column(modifier = Modifier.padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
+                Text(
+                    "Вложенная задача",
+                    style = MaterialTheme.typography.titleMedium.copy(fontSize = 18.sp),
+                    fontWeight = FontWeight.SemiBold,
+                    color = F7Colors.TextPrimary,
+                )
+                Text(
+                    "к «$parentTitle»",
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = F7Colors.TextSecondary,
+                    maxLines = 1,
+                    overflow = TextOverflow.Ellipsis,
+                )
+                F7OutlinedField(value = text, onValueChange = { text = it }, label = "Название")
+                Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                    F7SecondaryButton("Отмена", onClick = onDismiss, modifier = Modifier.weight(1f))
+                    F7PrimaryButton(
+                        text = "Создать",
+                        onClick = { onConfirm(text.trim()) },
+                        enabled = text.isNotBlank(),
+                        modifier = Modifier.weight(1f),
+                    )
+                }
+            }
+        }
+    }
+}

feature/tasks/src/main/java/ru/forbion/f7cloud/feature/tasks/TasksRepository.kt

@@ -29,6 +29,7 @@ data class TaskItem(
     val description: String,
     val listHref: String,
     val listName: String,
+    val parentUid: String = "",
 ) {
     val isCompleted: Boolean
         get() = status.equals("COMPLETED", ignoreCase = true) || percentComplete >= 100
@@ -46,6 +47,7 @@ data class TaskItem(
         description = description,
         calendarName = listName,
         calendarHref = listHref,
+        parentUid = parentUid,
     )
 }
 
@@ -80,6 +82,7 @@ class TasksRepository {
         dueDate: LocalDate? = null,
         priority: Int = 0,
         description: String = "",
+        parentUid: String = "",
     ): TaskItem {
         val client = authedClient(session)
         val calendar = calendarForHref(session, listHref)
@@ -90,6 +93,7 @@ class TasksRepository {
             dueDate = dueDate,
             priority = priority,
             description = description,
+            parentUid = parentUid,
         ).toTaskItem()
     }
 
@@ -157,6 +161,7 @@ class TasksRepository {
         description = description,
         listHref = calendarHref,
         listName = calendarName,
+        parentUid = parentUid,
     )
 
     private fun calendarSlug(href: String): String {

feature/tasks/src/main/java/ru/forbion/f7cloud/feature/tasks/TasksScreen.kt

@@ -17,6 +17,9 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
@@ -31,11 +34,19 @@ fun TasksScreen(
     modifier: Modifier = Modifier,
     createRequest: Int = 0,
     openListSlug: String? = null,
+    showListsRequest: Int = 0,
     onOpenListConsumed: () -> Unit = {},
     onUnauthorized: () -> Unit = {},
 ) {
     val vm: TasksViewModel = viewModel()
     val state by vm.state.collectAsState()
+    // Родитель для создаваемой подзадачи (открывает диалог ввода названия).
+    var subtaskParent by remember { mutableStateOf<TaskItem?>(null) }
+
+    // Стрелка «назад» нижней панели на Задачах → показать панель списков (закрыть открытый список).
+    LaunchedEffect(showListsRequest) {
+        if (showListsRequest > 0) vm.closeList()
+    }
 
     LaunchedEffect(session.serverUrl, session.username, session.davUserId) {
         vm.load(session)
@@ -103,6 +114,8 @@ fun TasksScreen(
                     onReload = { vm.refreshTasks(session) },
                     onToggleCompletedExpanded = vm::toggleCompletedExpanded,
                     onDeleteCompleted = { vm.deleteCompletedTasks(session) },
+                    onAddSubtask = { subtaskParent = it },
+                    onDeleteTask = { vm.deleteTask(session, it) },
                 )
             }
         }
@@ -143,6 +156,18 @@ fun TasksScreen(
         onDismiss = vm::closeSettings,
         onSwipeBack = vm::closeSettings,
     )
+
+    // Диалог «Добавить вложенную задачу»
+    subtaskParent?.let { parent ->
+        TaskSubtaskDialog(
+            parentTitle = parent.summary,
+            onConfirm = { title ->
+                vm.createSubtask(session, parent, title)
+                subtaskParent = null
+            },
+            onDismiss = { subtaskParent = null },
+        )
+    }
 }
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -162,7 +187,15 @@ private fun TasksMainContent(
     onReload: () -> Unit,
     onToggleCompletedExpanded: () -> Unit,
     onDeleteCompleted: () -> Unit,
+    onAddSubtask: (TaskItem) -> Unit,
+    onDeleteTask: (TaskItem) -> Unit,
 ) {
+    // Подзадачи (RELATED-TO) — рисуем под родителем с отступом; из верхнего уровня исключаем.
+    val childrenByParent = remember(state.visibleActiveGroups) {
+        state.visibleActiveGroups.flatMap { it.tasks }
+            .filter { it.parentUid.isNotBlank() }
+            .groupBy { it.parentUid }
+    }
     Column(modifier = Modifier.fillMaxSize()) {
         TasksToolbar(
             serverUrl = session.serverUrl,
@@ -212,13 +245,27 @@ private fun TasksMainContent(
                             modifier = Modifier.padding(bottom = 4.dp),
                         )
                     }
-                    items(group.tasks, key = { it.uid }) { task ->
+                    items(group.tasks.filter { it.parentUid.isBlank() }, key = { it.uid }) { task ->
+                        Column(verticalArrangement = Arrangement.spacedBy(4.dp)) {
                             TasksRow(
                                 task = task,
                                 serverUrl = session.serverUrl,
                                 onToggleComplete = { onToggleComplete(task) },
                                 onOpen = { onOpenTask(task) },
+                                onAddSubtask = { onAddSubtask(task) },
+                                onDelete = { onDeleteTask(task) },
                             )
+                            childrenByParent[task.uid].orEmpty().forEach { sub ->
+                                TasksRow(
+                                    task = sub,
+                                    serverUrl = session.serverUrl,
+                                    onToggleComplete = { onToggleComplete(sub) },
+                                    onOpen = { onOpenTask(sub) },
+                                    onDelete = { onDeleteTask(sub) },
+                                    modifier = Modifier.padding(start = 24.dp),
+                                )
+                            }
+                        }
                     }
                 }
 

feature/tasks/src/main/java/ru/forbion/f7cloud/feature/tasks/TasksViewModel.kt

@@ -74,10 +74,27 @@ class TasksViewModel(
     val state: StateFlow<TasksUiState> = _state.asStateFlow()
 
     fun load(session: AuthSession) {
+        // Мгновенно показываем кэш (списки + задачи выбранного), сеть обновляет в фоне.
+        val cachedLists = TasksCache.cachedLists()
+        if (cachedLists != null && cachedLists.isNotEmpty()) {
+            val selected = _state.value.selectedListHref
+                ?: _state.value.defaultListHref
+                ?: cachedLists.firstOrNull()?.href
+            _state.update {
+                it.copy(
+                    loading = false,
+                    lists = cachedLists,
+                    selectedListHref = selected,
+                    defaultListHref = it.defaultListHref ?: cachedLists.firstOrNull()?.href,
+                    tasks = selected?.let { href -> TasksCache.cachedTasks(href) } ?: it.tasks,
+                )
+            }
+        }
         viewModelScope.launch(Dispatchers.IO) {
             _state.update { it.copy(loading = it.lists.isEmpty(), error = null) }
             runCatching { repository.listTaskLists(session) }
                 .onSuccess { lists ->
+                    TasksCache.putLists(lists)
                     val selected = _state.value.selectedListHref
                         ?: _state.value.defaultListHref
                         ?: lists.firstOrNull()?.href
@@ -107,6 +124,8 @@ class TasksViewModel(
         _state.update {
             it.copy(
                 selectedListHref = listHref,
+                // Мгновенно из кэша, если есть — иначе пусто до загрузки.
+                tasks = TasksCache.cachedTasks(listHref).orEmpty(),
                 searchQuery = "",
                 detailTask = null,
                 createInputExpanded = false,
@@ -197,6 +216,7 @@ class TasksViewModel(
         summary: String,
         dueInput: String,
         priority: Int,
+        parentUid: String = "",
     ) {
         val listHref = _state.value.selectedListHref ?: return
         if (summary.isBlank()) {
@@ -218,6 +238,7 @@ class TasksViewModel(
                     summary = summary.trim(),
                     dueDate = dueDate,
                     priority = priority,
+                    parentUid = parentUid,
                 )
             }.onSuccess {
                 _state.update {
@@ -301,6 +322,30 @@ class TasksViewModel(
         }
     }
 
+    /** Удаление конкретной задачи из списка (per-task меню «⋯»), не только открытой детали. */
+    fun deleteTask(session: AuthSession, task: TaskItem) {
+        viewModelScope.launch(Dispatchers.IO) {
+            _state.update { it.copy(saving = true, error = null) }
+            runCatching { repository.deleteTask(session, task) }
+                .onSuccess {
+                    _state.update {
+                        it.copy(saving = false, detailTask = it.detailTask?.takeIf { d -> d.uid != task.uid })
+                    }
+                    _state.value.selectedListHref?.let { loadTasks(session, it) }
+                }
+                .onFailure { t ->
+                    _state.update {
+                        it.copy(saving = false, error = t.message ?: "Не удалось удалить", unauthorized = t is UnauthorizedException)
+                    }
+                }
+        }
+    }
+
+    /** Создать подзадачу к [parent] с заголовком [summary]. */
+    fun createSubtask(session: AuthSession, parent: TaskItem, summary: String) {
+        createTask(session, summary, "", 0, parentUid = parent.uid)
+    }
+
     fun deleteDetail(session: AuthSession) {
         val task = _state.value.detailTask ?: return
         viewModelScope.launch(Dispatchers.IO) {
@@ -355,8 +400,12 @@ class TasksViewModel(
             _state.update { it.copy(loading = _state.value.tasks.isEmpty(), error = null) }
             runCatching { repository.loadTasks(session, listHref) }
                 .onSuccess { tasks ->
+                    TasksCache.putTasks(listHref, tasks)
+                    // Обновляем список задач, только если пользователь всё ещё на этом списке.
+                    if (_state.value.selectedListHref == listHref) {
                         _state.update { it.copy(loading = false, tasks = tasks) }
                     }
+                }
                 .onFailure { t ->
                     _state.update {
                         it.copy(