feat(calendar): пакет функционала — событие 1:1 с веб, вложения, повторение, шаринг, free/busy

- 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

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(
@@ -112,8 +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)
@@ -298,11 +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,
@@ -339,6 +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,
@@ -593,6 +730,7 @@ object CalDavClient {
             organizerName = parsed.organizerName,
             alarms = parsed.alarms,
             conferenceUri = parsed.conferenceUri,
+            attachments = parsed.attachments,
         )
     }
 
@@ -799,6 +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>()
@@ -809,6 +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()) {
@@ -819,8 +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()
@@ -837,7 +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

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}")

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.
-    DatePickerDialog(
+    val context = LocalContext.current
-        onDismissRequest = onDismiss,
+    val currentOnConfirm by rememberUpdatedState(onConfirm)
-        confirmButton = {
+    val currentOnDismiss by rememberUpdatedState(onDismiss)
-            TextButton(onClick = {
+    DisposableEffect(Unit) {
-                val millis = state.selectedDateMillis ?: return@TextButton
+        val dialog = android.app.DatePickerDialog(
-                val day = Instant.ofEpochMilli(millis).atZone(ZoneId.systemDefault()).toLocalDate()
+            context,
-                onConfirm(day)
+            { _, year, month, dayOfMonth ->
-            }) { Text("OK") }
+                currentOnConfirm(LocalDate.of(year, month + 1, dayOfMonth))
-        },
+            },
-        dismissButton = {
+            selectedDay.year,
-            TextButton(onClick = onDismiss) { Text("Отмена") }
+            selectedDay.monthValue - 1,
-        },
+            selectedDay.dayOfMonth,
-    ) {
+        )
-        DatePicker(state = state)
+        // onDismiss закрывает и по «Отмена», и после выбора (диалог сам себя закрывает).
+        dialog.setOnDismissListener { currentOnDismiss() }
+        dialog.show()
+        onDispose { dialog.setOnDismissListener(null); dialog.dismiss() }
     }
 }
 

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

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

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

@@ -1,18 +1,24 @@
 package ru.forbion.f7cloud.feature.calendar
 
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
+import okhttp3.RequestBody.Companion.toRequestBody
 import ru.forbion.f7cloud.core.auth.AuthSession
 import ru.forbion.f7cloud.core.auth.OcsUserResolver
 import ru.forbion.f7cloud.core.network.CalendarAlarmData
+import ru.forbion.f7cloud.core.network.CalendarAttachmentData
 import ru.forbion.f7cloud.core.network.CalendarAttendeeData
 import ru.forbion.f7cloud.core.network.CalendarEventData
 import ru.forbion.f7cloud.core.network.CalendarIcs
 import ru.forbion.f7cloud.core.network.CalDavClient
 import ru.forbion.f7cloud.core.network.DavCalendar
+import ru.forbion.f7cloud.core.network.DavClient
 import ru.forbion.f7cloud.core.network.DavEvent
 import ru.forbion.f7cloud.core.network.DavTask
 import ru.forbion.f7cloud.core.network.DavTrashEvent
 import ru.forbion.f7cloud.core.network.NetworkFactory
+import ru.forbion.f7cloud.core.network.davFileUrl
+import ru.forbion.f7cloud.core.network.davFolderUrl
 import java.time.Instant
 import java.time.LocalDate
 import java.time.LocalDateTime
@@ -104,13 +110,111 @@ class CalendarRepository(
 
     fun createTalkRoom(session: AuthSession, roomName: String): String = apiClient.createTalkRoom(session, roomName)
 
+    fun listTalkRooms(session: AuthSession): List<CalendarTalkRoom> = apiClient.listTalkRooms(session)
+
+    private fun davUserId(session: AuthSession): String =
+        session.davUserId ?: OcsUserResolver.resolveDavUserId(session)
+
+    // --- Управление календарём ---
+    fun updateCalendarProps(session: AuthSession, calendarHref: String, displayName: String?, color: String?) {
+        CalDavClient.updateCalendarProps(davClient(session), calendarHref, displayName, color)
+    }
+
+    fun deleteCalendar(session: AuthSession, calendarHref: String) {
+        CalDavClient.deleteCalendar(davClient(session), calendarHref)
+    }
+
+    fun listCalendarShares(session: AuthSession, calendarHref: String): List<CalDavClient.DavSharee> =
+        CalDavClient.listCalendarShares(davClient(session), calendarHref)
+
+    fun shareCalendar(session: AuthSession, calendarHref: String, principal: String, writable: Boolean) {
+        CalDavClient.shareCalendar(davClient(session), calendarHref, principal, writable)
+    }
+
+    fun unshareCalendar(session: AuthSession, calendarHref: String, principal: String) {
+        CalDavClient.unshareCalendar(davClient(session), calendarHref, principal)
+    }
+
+    fun searchSharees(session: AuthSession, query: String): List<CalendarShareeSuggestion> =
+        apiClient.searchSharees(session, query)
+
+    /** Занятость участников (email → интервалы) за диапазон. */
+    fun freeBusy(
+        session: AuthSession,
+        attendeeEmails: List<String>,
+        rangeStart: Instant,
+        rangeEnd: Instant,
+    ): Map<String, List<CalDavClient.BusyPeriod>> {
+        val organizer = apiClient.getUserEmail(session)
+        if (organizer.isBlank()) error("У пользователя не задан email — занятость недоступна")
+        return CalDavClient.freeBusy(
+            davClient(session),
+            session.serverUrl,
+            davUserId(session),
+            organizer,
+            attendeeEmails,
+            rangeStart,
+            rangeEnd,
+        )
+    }
+
+    private fun davClient(session: AuthSession): OkHttpClient =
+        NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+
+    /** Загрузка файла с устройства в папку /Calendar и возврат ATTACH-элемента (WebDAV-URL). */
+    fun uploadAttachment(
+        session: AuthSession,
+        fileName: String,
+        mimeType: String,
+        bytes: ByteArray,
+    ): CalendarAttachmentItem {
+        val client = NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+        val userId = davUserId(session)
+        // Папка для вложений календаря; создаём best-effort (уже существует → игнорируем).
+        runCatching { DavClient.mkcol(client, davFolderUrl(session.serverUrl, userId, "Calendar")) }
+        val safeName = sanitizeFileName(fileName)
+        val fileUrl = davFileUrl(session.serverUrl, userId, "Calendar/$safeName")
+        val media = mimeType.ifBlank { "application/octet-stream" }.toMediaType()
+        DavClient.put(client, fileUrl, bytes.toRequestBody(media))
+        return CalendarAttachmentItem(fileName = safeName, url = fileUrl, mimeType = mimeType)
+    }
+
+    /** Список файлов/папок в директории (для пикера «Добавить из файлов»). relativePath — от корня. */
+    fun listUserFiles(session: AuthSession, relativePath: String): List<DavClient.DavEntry> {
+        val client = NetworkFactory.newAuthedClient(session.username, session.appPassword, session.trustAllCerts)
+        val userId = davUserId(session)
+        val folderUrl = davFolderUrl(session.serverUrl, userId, relativePath)
+        val entries = DavClient.propfind(client, folderUrl, depth = 1)
+        val self = folderUrl.trimEnd('/')
+        // Убираем саму папку (первый ответ PROPFIND) и скрытые файлы.
+        return entries
+            .filter { it.href.trimEnd('/') != self && !it.name.startsWith('.') }
+            .sortedWith(compareByDescending<DavClient.DavEntry> { it.isDirectory }.thenBy { it.name.lowercase() })
+    }
+
+    /** Полный WebDAV-URL файла (для ATTACH при выборе из Файлов). */
+    fun fileAttachment(session: AuthSession, relativePath: String, mimeType: String): CalendarAttachmentItem {
+        val userId = davUserId(session)
+        val url = davFileUrl(session.serverUrl, userId, relativePath)
+        return CalendarAttachmentItem(fileName = relativePath.substringAfterLast('/'), url = url, mimeType = mimeType)
+    }
+
+    private fun sanitizeFileName(name: String): String =
+        name.substringAfterLast('/').substringAfterLast('\\').ifBlank { "attachment" }
+            .replace(Regex("[\\r\\n\"]"), "_")
+
+    fun createTalkRoomTyped(session: AuthSession, roomName: String, roomType: Int): CalendarTalkRoom =
+        apiClient.createTalkRoomTyped(session, roomName, roomType)
+
     fun syncTalkParticipants(session: AuthSession, callUrl: String, emails: List<String>) {
         apiClient.addTalkParticipants(session, callUrl, emails)
     }
 
     fun saveEvent(session: AuthSession, draft: CalendarEventDraft, existing: CalendarEventItem? = null): CalendarEventItem {
         val ctx = openDavContext(session)
-        val calendar = ctx.calendars.firstOrNull { it.href == draft.calendarHref } ?: ctx.defaultCalendar
+        val picked = ctx.calendars.firstOrNull { it.href == draft.calendarHref } ?: ctx.defaultCalendar
+        // Если выбранная коллекция не принимает VEVENT (список задач) — уводим в событийный дефолт.
+        val calendar = if (picked.supportsEvents) picked else ctx.defaultCalendar
         var talkUrl = draft.talkRoomUrl
         if (draft.addTalkRoom && talkUrl.isBlank()) {
             talkUrl = apiClient.createTalkRoom(session, draft.title)
@@ -197,10 +301,12 @@ class CalendarRepository(
         val base = CalDavClient.calendarsBase(session.serverUrl, userId)
         val calendars = CalDavClient.listCalendars(client, base)
         if (calendars.isEmpty()) throw IllegalStateException("Календари не найдены")
-        val default = calendars.firstOrNull { cal ->
+        // Дефолт под события — только событийная коллекция (не VTODO-список задач), иначе PUT 403.
+        val eventCals = calendars.filter { it.supportsEvents }.ifEmpty { calendars }
+        val default = eventCals.firstOrNull { cal ->
             val name = cal.displayName.lowercase()
             name.contains("личн") || name.contains("personal") || name == "calendar"
-        } ?: calendars.first()
+        } ?: eventCals.first()
         return CalDavContext(client, calendars, default)
     }
 
@@ -264,6 +370,7 @@ class CalendarRepository(
         organizerEmail = organizerEmail,
         talkRoomUrl = conferenceUri.ifBlank { if (location.contains("/call/")) location else "" },
         alarms = alarms.map { CalendarReminderItem(it.minutesBefore, it.action) },
+        attachments = attachments.map { CalendarAttachmentItem(it.fileName, it.url, it.mimeType) },
         source = CalendarEventSource.F7CLOUD,
     )
 
@@ -361,23 +468,27 @@ data class CalendarEventItem(
     val organizerEmail: String = "",
     val talkRoomUrl: String = "",
     val alarms: List<CalendarReminderItem> = emptyList(),
+    val attachments: List<CalendarAttachmentItem> = emptyList(),
     val source: CalendarEventSource = CalendarEventSource.F7CLOUD,
 )
 
 private fun CalendarEventDraft.toEventData(uid: String? = null, talkUrl: String = ""): CalendarEventData {
     val zone = ZoneId.systemDefault()
+    // Многодневные события: дата окончания отдельная (не раньше даты начала).
+    val endDay = (endDate ?: date).coerceAtLeast(date)
     val start = if (allDay) {
         date.atStartOfDay(zone).toInstant().toEpochMilli()
     } else {
         parseDateTime(date, startTime)?.atZone(zone)?.toInstant()?.toEpochMilli()
             ?: date.atTime(10, 0).atZone(zone).toInstant().toEpochMilli()
     }
-    val end = if (allDay) {
+    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
+        }
+    }
+}