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 139
+        versionCode 152
-        versionName '0.5.131'
+        versionName '0.5.144'
         missingDimensionStrategy 'default', 'f7'
         multiDexEnabled true
 

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('/'))
+            // Web-файлы (whiteboard): НЕ проксируем — WebView ходит нативно по веб-сессии
-            if (launch.collaboraBaseUrl.isNotBlank()) {
+            // (cookie+CSRF). Проксирование через OkHttp теряло тело POST/PROPFIND → пустой Files.
-                prefixes += launch.collaboraBaseUrl.trimEnd('/')
+            if (launch.collaboraBaseUrl.isBlank()) return emptyList()
-            }
+            return listOf(launch.serverUrl.trimEnd('/'), launch.collaboraBaseUrl.trimEnd('/')).distinct()
-            return prefixes.distinct()
         }
     }
 }

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
+        // Единая круглая рамка (белый круг + рамка + мягкая тень) под КАЖДУЮ иконку —
-        if (localIcon != null) {
+        // как на мобильном сайте: все иконки одного размера в кружке. Глиф внутри меньше рамки.
-            // Нативный пункт: иконка в круглом бейдже с зелёной обводкой (стиль glass)
+        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: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/></d:prop>
+              <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(
+    // Нативный DatePickerDialog вместо material3.DatePicker: material3-версия (BOM 2025.02)
-        initialSelectedDateMillis = selectedDay.atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli(),
+    // 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(
+        // onDismiss закрывает и по «Отмена», и после выбора (диалог сам себя закрывает).
-        onDismissRequest = onDismiss,
+        dialog.setOnDismissListener { currentOnDismiss() }
-        confirmButton = {
+        dialog.show()
-            TextButton(onClick = {
+        onDispose { dialog.setOnDismissListener(null); dialog.dismiss() }
-                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)
     }
 }
 

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) {
+    val endRaw = if (allDay) {
-        date.plusDays(1).atStartOfDay(zone).toInstant().toEpochMilli()
+        endDay.plusDays(1).atStartOfDay(zone).toInstant().toEpochMilli()
     } else {
-        parseDateTime(date, endTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
+        parseDateTime(endDay, endTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
-            ?: date.atTime(11, 0).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
@@ -37,6 +40,8 @@ fun TasksScreen(
 ) {
     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) {
@@ -109,6 +114,8 @@ fun TasksScreen(
                     onReload = { vm.refreshTasks(session) },
                     onToggleCompletedExpanded = vm::toggleCompletedExpanded,
                     onDeleteCompleted = { vm.deleteCompletedTasks(session) },
+                    onAddSubtask = { subtaskParent = it },
+                    onDeleteTask = { vm.deleteTask(session, it) },
                 )
             }
         }
@@ -149,6 +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)
@@ -168,7 +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,
@@ -218,13 +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(