Оптимизация

app/src/main/java/com/rosetta/messenger/data/MessageRepository.kt

@@ -8,6 +8,7 @@ import com.rosetta.messenger.network.*
 import com.rosetta.messenger.utils.AttachmentFileManager
 import com.rosetta.messenger.utils.AvatarFileManager
 import com.rosetta.messenger.utils.MessageLogger
+import java.util.Locale
 import java.util.UUID
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.*
@@ -51,6 +52,7 @@ class MessageRepository private constructor(private val context: Context) {
     private val avatarDao = database.avatarDao()
     private val syncTimeDao = database.syncTimeDao()
     private val groupDao = database.groupDao()
+    private val searchIndexDao = database.messageSearchIndexDao()
 
     private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
 
@@ -214,6 +216,25 @@ class MessageRepository private constructor(private val context: Context) {
 
         if (inserted == -1L) return
 
+        val insertedMessage =
+                MessageEntity(
+                        account = account,
+                        fromPublicKey = SYSTEM_SAFE_PUBLIC_KEY,
+                        toPublicKey = account,
+                        content = "",
+                        timestamp = timestamp,
+                        chachaKey = "",
+                        read = 0,
+                        fromMe = 0,
+                        delivered = DeliveryStatus.DELIVERED.value,
+                        messageId = messageId,
+                        plainMessage = encryptedPlainMessage,
+                        attachments = "[]",
+                        primaryAttachmentType = -1,
+                        dialogKey = dialogKey
+                )
+        upsertSearchIndex(account, insertedMessage, messageText)
+
         val existing = dialogDao.getDialog(account, SYSTEM_SAFE_PUBLIC_KEY)
         dialogDao.insertDialog(
                 DialogEntity(
@@ -274,6 +295,25 @@ class MessageRepository private constructor(private val context: Context) {
 
         if (inserted == -1L) return null
 
+        val insertedMessage =
+                MessageEntity(
+                        account = account,
+                        fromPublicKey = SYSTEM_UPDATES_PUBLIC_KEY,
+                        toPublicKey = account,
+                        content = "",
+                        timestamp = timestamp,
+                        chachaKey = "",
+                        read = 0,
+                        fromMe = 0,
+                        delivered = DeliveryStatus.DELIVERED.value,
+                        messageId = messageId,
+                        plainMessage = encryptedPlainMessage,
+                        attachments = "[]",
+                        primaryAttachmentType = -1,
+                        dialogKey = dialogKey
+                )
+        upsertSearchIndex(account, insertedMessage, messageText)
+
         val existing = dialogDao.getDialog(account, SYSTEM_UPDATES_PUBLIC_KEY)
         dialogDao.insertDialog(
                 DialogEntity(
@@ -536,6 +576,7 @@ class MessageRepository private constructor(private val context: Context) {
                                     dialogKey = dialogKey
                             )
                     messageDao.insertMessage(entity)
+                    upsertSearchIndex(account, entity, text.trim())
 
                     // 📝 LOG: Сохранено в БД
                     MessageLogger.logDbSave(messageId, dialogKey, isNew = true)
@@ -563,6 +604,17 @@ class MessageRepository private constructor(private val context: Context) {
                             lastSeen = existing?.lastSeen ?: 0,
                             verified = existing?.verified ?: 0,
                             iHaveSent = 1,
+                            hasContent =
+                                    if (
+                                            encryptedPlainMessage.isNotBlank() ||
+                                                    attachments.isNotEmpty()
+                                    ) {
+                                        1
+                                    } else {
+                                        0
+                                    },
+                            lastMessageAttachmentType = resolvePrimaryAttachmentType(attachments),
+                            lastSenderKey = account,
                             lastMessageFromMe = 1,
                             lastMessageDelivered = 1,
                             lastMessageRead = 1,
@@ -875,6 +927,7 @@ class MessageRepository private constructor(private val context: Context) {
             if (!stillExists) {
                 // Сохраняем в БД только если сообщения нет
                 messageDao.insertMessage(entity)
+                upsertSearchIndex(account, entity, plainText)
                 MessageLogger.logDbSave(messageId, dialogKey, isNew = true)
             } else {
                 MessageLogger.logDbSave(messageId, dialogKey, isNew = false)
@@ -1411,7 +1464,8 @@ class MessageRepository private constructor(private val context: Context) {
                                 opponentKey = opponentKey,
                                 lastMessage = encryptedLastMessage,
                                 lastMessageTimestamp = timestamp,
-                                unreadCount = unreadCount
+                                unreadCount = unreadCount,
+                                hasContent = if (encryptedLastMessage.isNotBlank()) 1 else 0
                         )
                 )
             }
@@ -1649,6 +1703,26 @@ class MessageRepository private constructor(private val context: Context) {
         return attachments.first().type.value
     }
 
+    private suspend fun upsertSearchIndex(account: String, entity: MessageEntity, plainText: String) {
+        val opponentKey =
+                if (entity.fromMe == 1) entity.toPublicKey.trim() else entity.fromPublicKey.trim()
+        val normalized = plainText.lowercase(Locale.ROOT)
+        searchIndexDao.upsert(
+                listOf(
+                        MessageSearchIndexEntity(
+                                account = account,
+                                messageId = entity.messageId,
+                                dialogKey = entity.dialogKey,
+                                opponentKey = opponentKey,
+                                timestamp = entity.timestamp,
+                                fromMe = entity.fromMe,
+                                plainText = plainText,
+                                plainTextNormalized = normalized
+                        )
+                )
+        )
+    }
+
     /**
      * 📸 Обработка AVATAR attachments - сохранение аватара отправителя в кэш Как в desktop: при
      * получении attachment с типом AVATAR - сохраняем в avatar_cache

app/src/main/java/com/rosetta/messenger/database/MessageEntities.kt

@@ -82,6 +82,7 @@ data class LastMessageStatus(
                         Index(value = ["account", "from_public_key", "to_public_key", "timestamp"]),
                         Index(value = ["account", "message_id"], unique = true),
                         Index(value = ["account", "dialog_key", "timestamp"]),
+                        Index(value = ["account", "timestamp"]),
                         Index(value = ["account", "primary_attachment_type", "timestamp"])]
 )
 data class MessageEntity(
@@ -107,13 +108,40 @@ data class MessageEntity(
         @ColumnInfo(name = "dialog_key") val dialogKey: String // Ключ диалога для быстрой выборки
 )
 
+/** Локальный денормализованный индекс для поиска по сообщениям без повторной дешифровки. */
+@Entity(
+        tableName = "message_search_index",
+        primaryKeys = ["account", "message_id"],
+        indices =
+                [
+                        Index(value = ["account", "timestamp"]),
+                        Index(value = ["account", "opponent_key", "timestamp"])]
+)
+data class MessageSearchIndexEntity(
+        @ColumnInfo(name = "account") val account: String,
+        @ColumnInfo(name = "message_id") val messageId: String,
+        @ColumnInfo(name = "dialog_key") val dialogKey: String,
+        @ColumnInfo(name = "opponent_key") val opponentKey: String,
+        @ColumnInfo(name = "timestamp") val timestamp: Long,
+        @ColumnInfo(name = "from_me") val fromMe: Int = 0,
+        @ColumnInfo(name = "plain_text") val plainText: String,
+        @ColumnInfo(name = "plain_text_normalized") val plainTextNormalized: String
+)
+
 /** Entity для диалогов (кэш последнего сообщения) */
 @Entity(
         tableName = "dialogs",
         indices =
                 [
                         Index(value = ["account", "opponent_key"], unique = true),
-                        Index(value = ["account", "last_message_timestamp"])]
+                        Index(value = ["account", "last_message_timestamp"]),
+                        Index(
+                                value =
+                                        [
+                                                "account",
+                                                "i_have_sent",
+                                                "has_content",
+                                                "last_message_timestamp"])]
 )
 data class DialogEntity(
         @PrimaryKey(autoGenerate = true) val id: Long = 0,
@@ -132,6 +160,12 @@ data class DialogEntity(
         @ColumnInfo(name = "verified") val verified: Int = 0, // Верифицирован
         @ColumnInfo(name = "i_have_sent", defaultValue = "0")
         val iHaveSent: Int = 0, // Отправлял ли я сообщения в этот диалог (0/1)
+        @ColumnInfo(name = "has_content", defaultValue = "0")
+        val hasContent: Int = 0, // Есть ли контент в диалоге (0/1)
+        @ColumnInfo(name = "last_message_attachment_type", defaultValue = "-1")
+        val lastMessageAttachmentType: Int = -1, // Денормализованный тип вложения последнего сообщения
+        @ColumnInfo(name = "last_sender_key", defaultValue = "''")
+        val lastSenderKey: String = "", // Для групп: публичный ключ последнего отправителя
         @ColumnInfo(name = "last_message_from_me", defaultValue = "0")
         val lastMessageFromMe: Int = 0, // Последнее сообщение от меня (0/1)
         @ColumnInfo(name = "last_message_delivered", defaultValue = "0")
@@ -548,10 +582,7 @@ interface MessageDao {
             """
         SELECT * FROM messages
         WHERE account = :account
-          AND (
+          AND primary_attachment_type = 0
-              primary_attachment_type = 0
-              OR (primary_attachment_type = -1 AND attachments != '[]' AND attachments LIKE '%"type":0%')
-          )
         ORDER BY timestamp DESC
         LIMIT :limit OFFSET :offset
     """
@@ -566,10 +597,7 @@ interface MessageDao {
             """
         SELECT * FROM messages
         WHERE account = :account
-          AND (
+          AND primary_attachment_type = 2
-              primary_attachment_type = 2
-              OR (primary_attachment_type = -1 AND attachments != '[]' AND attachments LIKE '%"type":2%')
-          )
         ORDER BY timestamp DESC
         LIMIT :limit OFFSET :offset
     """
@@ -600,14 +628,7 @@ interface MessageDao {
                 ELSE m.from_public_key
            END
         WHERE m.account = :account
-          AND (
+          AND m.primary_attachment_type = 4
-              m.primary_attachment_type = 4
-              OR (
-                    m.primary_attachment_type = -1
-                    AND m.attachments != '[]'
-                    AND (m.attachments LIKE '%"type":4%' OR m.attachments LIKE '%"type": 4%')
-              )
-          )
         ORDER BY m.timestamp DESC, m.message_id DESC
         LIMIT :limit
     """
@@ -624,14 +645,7 @@ interface MessageDao {
             END AS peer_key
         FROM messages
         WHERE account = :account
-          AND (
+          AND primary_attachment_type = 4
-              primary_attachment_type = 4
-              OR (
-                    primary_attachment_type = -1
-                    AND attachments != '[]'
-                    AND (attachments LIKE '%"type":4%' OR attachments LIKE '%"type": 4%')
-              )
-          )
     """
     )
     suspend fun getCallHistoryPeers(account: String): List<String>
@@ -641,20 +655,13 @@ interface MessageDao {
             """
         DELETE FROM messages
         WHERE account = :account
-          AND (
+          AND primary_attachment_type = 4
-              primary_attachment_type = 4
-              OR (
-                    primary_attachment_type = -1
-                    AND attachments != '[]'
-                    AND (attachments LIKE '%"type":4%' OR attachments LIKE '%"type": 4%')
-              )
-          )
     """
     )
     suspend fun deleteAllCallMessages(account: String): Int
 
     /** Все сообщения аккаунта (для поиска по тексту), отсортированные по дате */
-    @Query(
+        @Query(
             """
         SELECT * FROM messages
         WHERE account = :account
@@ -662,10 +669,51 @@ interface MessageDao {
         ORDER BY timestamp DESC
         LIMIT :limit OFFSET :offset
     """
-    )
+        )
     suspend fun getAllMessagesPaged(account: String, limit: Int, offset: Int): List<MessageEntity>
 }
 
+@Dao
+interface MessageSearchIndexDao {
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun upsert(items: List<MessageSearchIndexEntity>)
+
+    @Query(
+            """
+        SELECT * FROM message_search_index
+        WHERE account = :account
+          AND plain_text_normalized LIKE '%' || :queryNormalized || '%'
+        ORDER BY timestamp DESC
+        LIMIT :limit OFFSET :offset
+    """
+    )
+    suspend fun search(
+            account: String,
+            queryNormalized: String,
+            limit: Int,
+            offset: Int = 0
+    ): List<MessageSearchIndexEntity>
+
+    @Query(
+            """
+        SELECT m.* FROM messages m
+        LEFT JOIN message_search_index s
+            ON s.account = m.account
+           AND s.message_id = m.message_id
+        WHERE m.account = :account
+          AND m.plain_message != ''
+          AND s.message_id IS NULL
+        ORDER BY m.timestamp DESC
+        LIMIT :limit
+    """
+    )
+    suspend fun getUnindexedMessages(account: String, limit: Int): List<MessageEntity>
+
+    @Query("DELETE FROM message_search_index WHERE account = :account")
+    suspend fun deleteByAccount(account: String): Int
+}
+
 /** DAO для работы с диалогами */
 @Dao
 interface DialogDao {
@@ -687,7 +735,7 @@ interface DialogDao {
               OR opponent_key = '0x000000000000000000000000000000000000000001'
               OR opponent_key = '0x000000000000000000000000000000000000000002'
           )
-          AND (last_message != '' OR last_message_attachments != '[]')
+          AND has_content = 1
         ORDER BY last_message_timestamp DESC
         LIMIT 30
     """
@@ -704,7 +752,7 @@ interface DialogDao {
               OR opponent_key = '0x000000000000000000000000000000000000000001'
               OR opponent_key = '0x000000000000000000000000000000000000000002'
           )
-          AND (last_message != '' OR last_message_attachments != '[]')
+          AND has_content = 1
         ORDER BY last_message_timestamp DESC
         LIMIT :limit OFFSET :offset
     """
@@ -722,7 +770,7 @@ interface DialogDao {
           AND i_have_sent = 0
           AND opponent_key != '0x000000000000000000000000000000000000000001'
           AND opponent_key != '0x000000000000000000000000000000000000000002'
-          AND (last_message != '' OR last_message_attachments != '[]')
+          AND has_content = 1
         ORDER BY last_message_timestamp DESC
         LIMIT 30
     """
@@ -737,7 +785,7 @@ interface DialogDao {
           AND i_have_sent = 0
           AND opponent_key != '0x000000000000000000000000000000000000000001'
           AND opponent_key != '0x000000000000000000000000000000000000000002'
-          AND (last_message != '' OR last_message_attachments != '[]')
+          AND has_content = 1
     """
     )
     fun getRequestsCountFlow(account: String): Flow<Int>
@@ -750,7 +798,7 @@ interface DialogDao {
     @Query("""
         SELECT * FROM dialogs
         WHERE account = :account
-          AND (last_message != '' OR last_message_attachments != '[]')
+          AND has_content = 1
           AND opponent_key NOT LIKE '#group:%'
           AND (
               opponent_title = ''
@@ -781,7 +829,8 @@ interface DialogDao {
             """
         UPDATE dialogs SET 
             last_message = :lastMessage,
-            last_message_timestamp = :timestamp
+            last_message_timestamp = :timestamp,
+            has_content = CASE WHEN TRIM(:lastMessage) != '' THEN 1 ELSE has_content END
         WHERE account = :account AND opponent_key = :opponentKey
     """
     )
@@ -1010,6 +1059,16 @@ interface DialogDao {
         val hasSent = hasSentByDialogKey(account, dialogKey)
 
         // 5. Один INSERT OR REPLACE с вычисленными данными
+        val hasContent =
+                if (
+                        lastMsg.plainMessage.isNotBlank() ||
+                                (lastMsg.attachments.isNotBlank() &&
+                                        lastMsg.attachments.trim() != "[]")
+                ) {
+                    1
+                } else {
+                    0
+                }
         insertDialog(
                 DialogEntity(
                         id = existing?.id ?: 0,
@@ -1025,6 +1084,9 @@ interface DialogDao {
                         verified = existing?.verified ?: 0,
                         // Desktop parity: request flag is always derived from message history.
                         iHaveSent = if (hasSent || isSystemDialog) 1 else 0,
+                        hasContent = hasContent,
+                        lastMessageAttachmentType = lastMsg.primaryAttachmentType,
+                        lastSenderKey = lastMsg.fromPublicKey,
                         lastMessageFromMe = lastMsg.fromMe,
                         lastMessageDelivered = if (lastMsg.fromMe == 1) lastMsg.delivered else 0,
                         lastMessageRead = if (lastMsg.fromMe == 1) lastMsg.read else 0,
@@ -1044,6 +1106,16 @@ interface DialogDao {
 
         val lastMsg = getLastMessageByDialogKey(account, dialogKey) ?: return
         val existing = getDialog(account, account)
+        val hasContent =
+                if (
+                        lastMsg.plainMessage.isNotBlank() ||
+                                (lastMsg.attachments.isNotBlank() &&
+                                        lastMsg.attachments.trim() != "[]")
+                ) {
+                    1
+                } else {
+                    0
+                }
 
         insertDialog(
                 DialogEntity(
@@ -1059,6 +1131,9 @@ interface DialogDao {
                         lastSeen = existing?.lastSeen ?: 0,
                         verified = existing?.verified ?: 0,
                         iHaveSent = 1,
+                        hasContent = hasContent,
+                        lastMessageAttachmentType = lastMsg.primaryAttachmentType,
+                        lastSenderKey = lastMsg.fromPublicKey,
                         lastMessageFromMe = 1,
                         lastMessageDelivered = 1,
                         lastMessageRead = 1,

app/src/main/java/com/rosetta/messenger/database/RosettaDatabase.kt

@@ -12,13 +12,14 @@ import androidx.sqlite.db.SupportSQLiteDatabase
                 [
                         EncryptedAccountEntity::class,
                         MessageEntity::class,
+                        MessageSearchIndexEntity::class,
                         DialogEntity::class,
                         BlacklistEntity::class,
                         AvatarCacheEntity::class,
                         AccountSyncTimeEntity::class,
                         GroupEntity::class,
                         PinnedMessageEntity::class],
-        version = 15,
+        version = 17,
         exportSchema = false
 )
 abstract class RosettaDatabase : RoomDatabase() {
@@ -30,6 +31,7 @@ abstract class RosettaDatabase : RoomDatabase() {
     abstract fun syncTimeDao(): SyncTimeDao
     abstract fun groupDao(): GroupDao
     abstract fun pinnedMessageDao(): PinnedMessageDao
+    abstract fun messageSearchIndexDao(): MessageSearchIndexDao
 
     companion object {
         @Volatile private var INSTANCE: RosettaDatabase? = null
@@ -232,6 +234,124 @@ abstract class RosettaDatabase : RoomDatabase() {
                     }
                 }
 
+        /**
+         * 🧱 МИГРАЦИЯ 15->16: Денормализованный has_content для быстрых выборок dialogs/requests
+         */
+        private val MIGRATION_15_16 =
+                object : Migration(15, 16) {
+                    override fun migrate(database: SupportSQLiteDatabase) {
+                        database.execSQL(
+                                "ALTER TABLE dialogs ADD COLUMN has_content INTEGER NOT NULL DEFAULT 0"
+                        )
+                        database.execSQL(
+                                "CREATE INDEX IF NOT EXISTS index_dialogs_account_i_have_sent_has_content_last_message_timestamp ON dialogs (account, i_have_sent, has_content, last_message_timestamp)"
+                        )
+                        database.execSQL(
+                                """
+                    UPDATE dialogs
+                    SET has_content = CASE
+                        WHEN TRIM(last_message) != '' THEN 1
+                        WHEN last_message_attachments IS NOT NULL
+                             AND TRIM(last_message_attachments) != ''
+                             AND TRIM(last_message_attachments) != '[]' THEN 1
+                        ELSE 0
+                    END
+                """
+                        )
+                    }
+                }
+
+        /**
+         * 🧱 МИГРАЦИЯ 16->17:
+         * - dialogs: last_message_attachment_type + last_sender_key
+         * - messages: индекс (account, timestamp)
+         * - локальный message_search_index для поиска без повторной дешифровки
+         */
+        private val MIGRATION_16_17 =
+                object : Migration(16, 17) {
+                    override fun migrate(database: SupportSQLiteDatabase) {
+                        database.execSQL(
+                                "ALTER TABLE dialogs ADD COLUMN last_message_attachment_type INTEGER NOT NULL DEFAULT -1"
+                        )
+                        database.execSQL(
+                                "ALTER TABLE dialogs ADD COLUMN last_sender_key TEXT NOT NULL DEFAULT ''"
+                        )
+                        database.execSQL(
+                                "CREATE INDEX IF NOT EXISTS index_messages_account_timestamp ON messages (account, timestamp)"
+                        )
+                        database.execSQL(
+                                """
+                    CREATE TABLE IF NOT EXISTS message_search_index (
+                        account TEXT NOT NULL,
+                        message_id TEXT NOT NULL,
+                        dialog_key TEXT NOT NULL,
+                        opponent_key TEXT NOT NULL,
+                        timestamp INTEGER NOT NULL,
+                        from_me INTEGER NOT NULL DEFAULT 0,
+                        plain_text TEXT NOT NULL,
+                        plain_text_normalized TEXT NOT NULL,
+                        PRIMARY KEY(account, message_id)
+                    )
+                """
+                        )
+                        database.execSQL(
+                                "CREATE INDEX IF NOT EXISTS index_message_search_index_account_timestamp ON message_search_index (account, timestamp)"
+                        )
+                        database.execSQL(
+                                "CREATE INDEX IF NOT EXISTS index_message_search_index_account_opponent_key_timestamp ON message_search_index (account, opponent_key, timestamp)"
+                        )
+                        database.execSQL(
+                                """
+                    UPDATE dialogs
+                    SET last_message_attachment_type = CASE
+                        WHEN last_message_attachments IS NULL
+                             OR TRIM(last_message_attachments) = ''
+                             OR TRIM(last_message_attachments) = '[]' THEN -1
+                        WHEN last_message_attachments LIKE '%"type":0%' OR last_message_attachments LIKE '%"type": 0%' THEN 0
+                        WHEN last_message_attachments LIKE '%"type":1%' OR last_message_attachments LIKE '%"type": 1%' THEN 1
+                        WHEN last_message_attachments LIKE '%"type":2%' OR last_message_attachments LIKE '%"type": 2%' THEN 2
+                        WHEN last_message_attachments LIKE '%"type":3%' OR last_message_attachments LIKE '%"type": 3%' THEN 3
+                        WHEN last_message_attachments LIKE '%"type":4%' OR last_message_attachments LIKE '%"type": 4%' THEN 4
+                        ELSE -1
+                    END
+                """
+                        )
+                        database.execSQL(
+                                """
+                    UPDATE dialogs
+                    SET last_sender_key = COALESCE(
+                        (
+                            SELECT m.from_public_key
+                            FROM messages m
+                            WHERE m.account = dialogs.account
+                              AND m.dialog_key = CASE
+                                    WHEN dialogs.opponent_key = dialogs.account THEN dialogs.account
+                                    WHEN LOWER(dialogs.opponent_key) LIKE '#group:%' OR LOWER(dialogs.opponent_key) LIKE 'group:%'
+                                        THEN dialogs.opponent_key
+                                    WHEN dialogs.account < dialogs.opponent_key
+                                        THEN dialogs.account || ':' || dialogs.opponent_key
+                                    ELSE dialogs.opponent_key || ':' || dialogs.account
+                                END
+                            ORDER BY m.timestamp DESC, m.message_id DESC
+                            LIMIT 1
+                        ),
+                        ''
+                    )
+                """
+                        )
+                        database.execSQL(
+                                """
+                    CREATE TRIGGER IF NOT EXISTS trg_message_search_index_delete
+                    AFTER DELETE ON messages
+                    BEGIN
+                        DELETE FROM message_search_index
+                        WHERE account = OLD.account AND message_id = OLD.message_id;
+                    END
+                """
+                        )
+                    }
+                }
+
         fun getDatabase(context: Context): RosettaDatabase {
             return INSTANCE
                     ?: synchronized(this) {
@@ -255,7 +375,9 @@ abstract class RosettaDatabase : RoomDatabase() {
                                                 MIGRATION_11_12,
                                                 MIGRATION_12_13,
                                                 MIGRATION_13_14,
-                                                MIGRATION_14_15
+                                                MIGRATION_14_15,
+                                                MIGRATION_15_16,
+                                                MIGRATION_16_17
                                         )
                                         .fallbackToDestructiveMigration() // Для разработки - только
                                         // если миграция не

app/src/main/java/com/rosetta/messenger/ui/chats/ChatViewModel.kt

@@ -98,6 +98,7 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
     private val database = RosettaDatabase.getDatabase(application)
     private val dialogDao = database.dialogDao()
     private val messageDao = database.messageDao()
+    private val searchIndexDao = database.messageSearchIndexDao()
     private val groupDao = database.groupDao()
     private val pinnedMessageDao = database.pinnedMessageDao()
 
@@ -126,6 +127,7 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
     // UI State
     private val _messages = MutableStateFlow<List<ChatMessage>>(emptyList())
     val messages: StateFlow<List<ChatMessage>> = _messages.asStateFlow()
+    @Volatile private var normalizedMessagesDescCache: List<ChatMessage> = emptyList()
 
     /**
      * Pre-computed messages with date headers — runs dedup + sort on Dispatchers.Default. Replaces
@@ -143,20 +145,13 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
                     .debounce(16) // coalesce rapid updates (1 frame)
                     .mapLatest { rawMessages ->
                         withContext(Dispatchers.Default) {
-                            val unique = rawMessages.distinctBy { it.id }
+                            val normalized =
-                            val sorted = unique.sortedWith(chatMessageDescComparator)
+                                    normalizeMessagesDescendingIncremental(
-                            val result = ArrayList<Pair<ChatMessage, Boolean>>(sorted.size)
+                                            previous = normalizedMessagesDescCache,
-                            var prevDateStr: String? = null
+                                            incoming = rawMessages
-                            for (i in sorted.indices) {
+                                    )
-                                val msg = sorted[i]
+                            normalizedMessagesDescCache = normalized
-                                val dateStr = _dateFmt.format(msg.timestamp)
+                            buildMessagesWithDateHeaders(normalized)
-                                val nextMsg = sorted.getOrNull(i + 1)
-                                val nextDateStr = nextMsg?.let { _dateFmt.format(it.timestamp) }
-                                val showDate = nextDateStr == null || nextDateStr != dateStr
-                                result.add(msg to showDate)
-                                prevDateStr = dateStr
-                            }
-                            result as List<Pair<ChatMessage, Boolean>>
                         }
                     }
                     .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptyList())
@@ -234,6 +229,98 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
     private fun sortMessagesAscending(messages: List<ChatMessage>): List<ChatMessage> =
             messages.sortedWith(chatMessageAscComparator)
 
+    private fun isSortedDescending(messages: List<ChatMessage>): Boolean {
+        if (messages.size < 2) return true
+        for (i in 0 until messages.lastIndex) {
+            if (chatMessageDescComparator.compare(messages[i], messages[i + 1]) > 0) {
+                return false
+            }
+        }
+        return true
+    }
+
+    private fun insertIntoSortedDescending(
+            existing: List<ChatMessage>,
+            message: ChatMessage
+    ): List<ChatMessage> {
+        if (existing.isEmpty()) return listOf(message)
+        val result = ArrayList<ChatMessage>(existing.size + 1)
+        var inserted = false
+        existing.forEach { current ->
+            if (!inserted && chatMessageDescComparator.compare(message, current) <= 0) {
+                result.add(message)
+                inserted = true
+            }
+            result.add(current)
+        }
+        if (!inserted) result.add(message)
+        return result
+    }
+
+    private fun normalizeMessagesDescendingIncremental(
+            previous: List<ChatMessage>,
+            incoming: List<ChatMessage>
+    ): List<ChatMessage> {
+        if (incoming.isEmpty()) return emptyList()
+
+        val dedupedById = LinkedHashMap<String, ChatMessage>(incoming.size)
+        incoming.forEach { message -> dedupedById[message.id] = message }
+
+        if (previous.isNotEmpty() && dedupedById.size == previous.size) {
+            var unchanged = true
+            previous.forEach { message ->
+                if (dedupedById[message.id] != message) {
+                    unchanged = false
+                    return@forEach
+                }
+            }
+            if (unchanged && isSortedDescending(previous)) {
+                return previous
+            }
+        }
+
+        if (previous.isNotEmpty() && dedupedById.size == previous.size + 1) {
+            val previousIds = HashSet<String>(previous.size)
+            previous.forEach { previousIds.add(it.id) }
+
+            val addedIds = dedupedById.keys.filter { it !in previousIds }
+            if (addedIds.size == 1) {
+                var previousUnchanged = true
+                previous.forEach { message ->
+                    if (dedupedById[message.id] != message) {
+                        previousUnchanged = false
+                        return@forEach
+                    }
+                }
+                if (previousUnchanged) {
+                    val addedMessage = dedupedById.getValue(addedIds.first())
+                    return insertIntoSortedDescending(previous, addedMessage)
+                }
+            }
+        }
+
+        val normalized = ArrayList<ChatMessage>(dedupedById.values)
+        if (!isSortedDescending(normalized)) {
+            normalized.sortWith(chatMessageDescComparator)
+        }
+        return normalized
+    }
+
+    private fun buildMessagesWithDateHeaders(
+            sortedMessagesDesc: List<ChatMessage>
+    ): List<Pair<ChatMessage, Boolean>> {
+        val result = ArrayList<Pair<ChatMessage, Boolean>>(sortedMessagesDesc.size)
+        for (i in sortedMessagesDesc.indices) {
+            val msg = sortedMessagesDesc[i]
+            val dateStr = _dateFmt.format(msg.timestamp)
+            val nextMsg = sortedMessagesDesc.getOrNull(i + 1)
+            val nextDateStr = nextMsg?.let { _dateFmt.format(it.timestamp) }
+            val showDate = nextDateStr == null || nextDateStr != dateStr
+            result.add(msg to showDate)
+        }
+        return result
+    }
+
     private fun latestIncomingMessage(messages: List<ChatMessage>): ChatMessage? =
             messages.asSequence().filter { !it.isOutgoing }.maxWithOrNull(chatMessageAscComparator)
 
@@ -4648,6 +4735,20 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
                     )
 
             val insertedId = messageDao.insertMessage(entity)
+            searchIndexDao.upsert(
+                    listOf(
+                            com.rosetta.messenger.database.MessageSearchIndexEntity(
+                                    account = account,
+                                    messageId = finalMessageId,
+                                    dialogKey = dialogKey,
+                                    opponentKey = opponent.trim(),
+                                    timestamp = timestamp,
+                                    fromMe = if (isFromMe) 1 else 0,
+                                    plainText = text,
+                                    plainTextNormalized = text.lowercase(Locale.ROOT)
+                            )
+                    )
+            )
         } catch (e: Exception) {}
     }
 

app/src/main/java/com/rosetta/messenger/ui/chats/ChatsListScreen.kt

@@ -286,9 +286,6 @@ fun ChatsListScreen(
         val drawerState = rememberDrawerState(initialValue = DrawerValue.Closed)
         val scope = rememberCoroutineScope()
         val sduUpdateState by UpdateManager.updateState.collectAsState()
-        val sduDownloadProgress by UpdateManager.downloadProgress.collectAsState()
-        val sduDebugLogs by UpdateManager.debugLogs.collectAsState()
-        var showSduLogs by remember { mutableStateOf(false) }
         val themeRevealRadius = remember { Animatable(0f) }
         var rootSize by remember { mutableStateOf(IntSize.Zero) }
         var themeToggleCenterInRoot by remember { mutableStateOf<Offset?>(null) }
@@ -297,73 +294,6 @@ fun ChatsListScreen(
         var themeRevealCenter by remember { mutableStateOf(Offset.Zero) }
         var themeRevealSnapshot by remember { mutableStateOf<ImageBitmap?>(null) }
 
-        // ═══════════════ SDU Debug Log Dialog ═══════════════
-        if (showSduLogs) {
-                AlertDialog(
-                        onDismissRequest = { showSduLogs = false },
-                        title = {
-                                Row(verticalAlignment = Alignment.CenterVertically) {
-                                        Text("SDU Logs", fontWeight = FontWeight.Bold, fontSize = 16.sp)
-                                        Spacer(modifier = Modifier.weight(1f))
-                                        Text(
-                                                "state: ${sduUpdateState::class.simpleName}",
-                                                fontSize = 11.sp,
-                                                color = Color.Gray
-                                        )
-                                }
-                        },
-                        text = {
-                                val scrollState = rememberScrollState()
-                                LaunchedEffect(sduDebugLogs.size) {
-                                        scrollState.animateScrollTo(scrollState.maxValue)
-                                }
-                                Column(
-                                        modifier = Modifier
-                                                .fillMaxWidth()
-                                                .heightIn(max = 400.dp)
-                                                .verticalScroll(scrollState)
-                                ) {
-                                        if (sduDebugLogs.isEmpty()) {
-                                                Text(
-                                                        "Нет логов. SDU ещё не инициализирован\nили пакет 0x0A не пришёл.",
-                                                        fontSize = 13.sp,
-                                                        color = Color.Gray
-                                                )
-                                        } else {
-                                                sduDebugLogs.forEach { line ->
-                                                        Text(
-                                                                text = line,
-                                                                fontSize = 11.sp,
-                                                                fontFamily = androidx.compose.ui.text.font.FontFamily.Monospace,
-                                                                color = when {
-                                                                        "ERROR" in line || "EXCEPTION" in line -> Color(0xFFFF5555)
-                                                                        "WARNING" in line -> Color(0xFFFFAA33)
-                                                                        "State ->" in line -> Color(0xFF55BB55)
-                                                                        else -> if (isDarkTheme) Color(0xFFCCCCCC) else Color(0xFF333333)
-                                                                },
-                                                                modifier = Modifier.padding(vertical = 1.dp)
-                                                        )
-                                                }
-                                        }
-                                }
-                        },
-                        confirmButton = {
-                                Row {
-                                        TextButton(onClick = {
-                                                // Retry: force re-request SDU
-                                                UpdateManager.requestSduServer()
-                                        }) {
-                                                Text("Retry SDU")
-                                        }
-                                        Spacer(modifier = Modifier.width(8.dp))
-                                        TextButton(onClick = { showSduLogs = false }) {
-                                                Text("Close")
-                                        }
-                                }
-                        }
-                )
-        }
-
         fun startThemeReveal() {
                 if (themeRevealActive) {
                         return
@@ -2167,27 +2097,27 @@ fun ChatsListScreen(
                                                                 }
                                                         // 🔥 Берем dialogs из chatsState для
                                                         // консистентности
-                                                        // 📌 Сортируем: pinned сначала, потом по
+                                                        // 📌 Порядок по времени готовится в ViewModel.
-                                                        // времени
+                                                        // Здесь поднимаем pinned наверх без полного sort/distinct.
                                                         val currentDialogs =
                                                                 remember(
                                                                         chatsState.dialogs,
                                                                         pinnedChats
                                                                 ) {
-                                                                        chatsState.dialogs
+                                                                        val pinned = ArrayList<DialogUiModel>()
-                                                                                .distinctBy { it.opponentKey }
+                                                                        val regular = ArrayList<DialogUiModel>()
-                                                                                .sortedWith(
+                                                                        chatsState.dialogs.forEach { dialog ->
-                                                                                        compareByDescending<
+                                                                                if (
-                                                                                                        DialogUiModel> {
+                                                                                        pinnedChats.contains(
-                                                                                                pinnedChats
+                                                                                                dialog.opponentKey
-                                                                                                        .contains(
+                                                                                        )
-                                                                                                                it.opponentKey
+                                                                                ) {
-                                                                                                        )
+                                                                                        pinned.add(dialog)
-                                                                                        }
+                                                                                } else {
-                                                                                                .thenByDescending {
+                                                                                        regular.add(dialog)
-                                                                                                        it.lastMessageTimestamp
+                                                                                }
-                                                                                                }
+                                                                        }
-                                                                                )
+                                                                        pinned + regular
                                                                 }
 
                                                         // Telegram-style: only one item can be

app/src/main/java/com/rosetta/messenger/ui/chats/ChatsListViewModel.kt

@@ -17,8 +17,6 @@ import com.rosetta.messenger.network.SearchUser
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.Job
-import kotlinx.coroutines.async
-import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -80,6 +78,14 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
     // 🟢 Tracking для уже подписанных онлайн-статусов - предотвращает бесконечный цикл
     private val subscribedOnlineKeys = mutableSetOf<String>()
 
+    private data class DialogUiCacheEntry(
+            val signature: Int,
+            val model: DialogUiModel
+    )
+
+    private val dialogsUiCache = LinkedHashMap<String, DialogUiCacheEntry>()
+    private val requestsUiCache = LinkedHashMap<String, DialogUiCacheEntry>()
+
     // Job для отмены подписок при смене аккаунта
     private var accountSubscriptionsJob: Job? = null
 
@@ -147,19 +153,8 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
         if (!isGroupKey(dialog.opponentKey) || dialog.lastMessageTimestamp <= 0L) return null
 
         val senderKey =
-                if (dialog.lastMessageFromMe == 1) {
+                dialog.lastSenderKey.trim().ifBlank {
-                    currentAccount
+                    if (dialog.lastMessageFromMe == 1) currentAccount else ""
-                } else {
-                    val lastMessage =
-                            try {
-                                dialogDao.getLastMessageByDialogKey(
-                                        account = dialog.account,
-                                        dialogKey = dialog.opponentKey.trim()
-                                )
-                            } catch (_: Exception) {
-                                null
-                            }
-                    lastMessage?.fromPublicKey.orEmpty()
                 }
 
         if (senderKey.isBlank()) return null
@@ -226,6 +221,123 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
         return null
     }
 
+    private fun buildDialogSignature(dialog: com.rosetta.messenger.database.DialogEntity): Int {
+        var result = dialog.id.hashCode()
+        result = 31 * result + dialog.account.hashCode()
+        result = 31 * result + dialog.opponentKey.hashCode()
+        result = 31 * result + dialog.opponentTitle.hashCode()
+        result = 31 * result + dialog.opponentUsername.hashCode()
+        result = 31 * result + dialog.lastMessage.hashCode()
+        result = 31 * result + dialog.lastMessageTimestamp.hashCode()
+        result = 31 * result + dialog.unreadCount
+        result = 31 * result + dialog.isOnline
+        result = 31 * result + dialog.lastSeen.hashCode()
+        result = 31 * result + dialog.verified
+        result = 31 * result + dialog.lastMessageFromMe
+        result = 31 * result + dialog.lastMessageDelivered
+        result = 31 * result + dialog.lastMessageRead
+        result = 31 * result + dialog.lastMessageAttachments.hashCode()
+        return result
+    }
+
+    private fun shouldRequestDialogUserInfo(
+            dialog: com.rosetta.messenger.database.DialogEntity,
+            isRequestsFlow: Boolean
+    ): Boolean {
+        val title = dialog.opponentTitle
+        if (isRequestsFlow) {
+            return title.isEmpty() || title == dialog.opponentKey
+        }
+        return title.isEmpty() ||
+                title == dialog.opponentKey ||
+                title == dialog.opponentKey.take(7) ||
+                title == dialog.opponentKey.take(8)
+    }
+
+    private fun normalizeDialogList(dialogs: List<DialogUiModel>): List<DialogUiModel> {
+        if (dialogs.isEmpty()) return emptyList()
+        val deduped = LinkedHashMap<String, DialogUiModel>(dialogs.size)
+        dialogs.forEach { dialog ->
+            if (!deduped.containsKey(dialog.opponentKey)) {
+                deduped[dialog.opponentKey] = dialog
+            }
+        }
+        return deduped.values.sortedByDescending { it.lastMessageTimestamp }
+    }
+
+    private suspend fun mapDialogListIncremental(
+            dialogsList: List<com.rosetta.messenger.database.DialogEntity>,
+            privateKey: String,
+            cache: LinkedHashMap<String, DialogUiCacheEntry>,
+            isRequestsFlow: Boolean
+    ): List<DialogUiModel> {
+        return withContext(Dispatchers.Default) {
+            val activeKeys = HashSet<String>(dialogsList.size)
+            val mapped = ArrayList<DialogUiModel>(dialogsList.size)
+
+            dialogsList.forEach { dialog ->
+                val cacheKey = dialog.opponentKey
+                activeKeys.add(cacheKey)
+
+                val signature = buildDialogSignature(dialog)
+                val cached = cache[cacheKey]
+                if (cached != null && cached.signature == signature) {
+                    mapped.add(cached.model)
+                    return@forEach
+                }
+
+                val isSavedMessages = dialog.account == dialog.opponentKey
+                if (!isSavedMessages && shouldRequestDialogUserInfo(dialog, isRequestsFlow)) {
+                    if (isRequestsFlow) {
+                        loadUserInfoForRequest(dialog.opponentKey)
+                    } else {
+                        loadUserInfoForDialog(dialog.opponentKey)
+                    }
+                }
+
+                val decryptedLastMessage =
+                        decryptDialogPreview(
+                                encryptedLastMessage = dialog.lastMessage,
+                                privateKey = privateKey
+                        )
+                val attachmentType =
+                        resolveAttachmentType(
+                                attachmentType = dialog.lastMessageAttachmentType,
+                                decryptedLastMessage = decryptedLastMessage
+                        )
+                val groupLastSenderInfo = resolveGroupLastSenderInfo(dialog)
+
+                val model =
+                        DialogUiModel(
+                                id = dialog.id,
+                                account = dialog.account,
+                                opponentKey = dialog.opponentKey,
+                                opponentTitle = dialog.opponentTitle,
+                                opponentUsername = dialog.opponentUsername,
+                                lastMessage = decryptedLastMessage,
+                                lastMessageTimestamp = dialog.lastMessageTimestamp,
+                                unreadCount = dialog.unreadCount,
+                                isOnline = dialog.isOnline,
+                                lastSeen = dialog.lastSeen,
+                                verified = dialog.verified,
+                                isSavedMessages = isSavedMessages,
+                                lastMessageFromMe = dialog.lastMessageFromMe,
+                                lastMessageDelivered = dialog.lastMessageDelivered,
+                                lastMessageRead = dialog.lastMessageRead,
+                                lastMessageAttachmentType = attachmentType,
+                                lastMessageSenderPrefix = groupLastSenderInfo?.senderPrefix,
+                                lastMessageSenderKey = groupLastSenderInfo?.senderKey
+                        )
+
+                cache[cacheKey] = DialogUiCacheEntry(signature = signature, model = model)
+                mapped.add(model)
+            }
+
+            cache.keys.retainAll(activeKeys)
+            normalizeDialogList(mapped)
+        }
+    }
+
     /** Установить текущий аккаунт и загрузить диалоги */
     fun setAccount(publicKey: String, privateKey: String) {
         val setAccountStart = System.currentTimeMillis()
@@ -241,6 +353,8 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
         // 🔥 Очищаем кэш запрошенных user info при смене аккаунта
         requestedUserInfoKeys.clear()
         subscribedOnlineKeys.clear()
+        dialogsUiCache.clear()
+        requestsUiCache.clear()
 
         // 🔥 Очищаем глобальный кэш сообщений ChatViewModel при смене аккаунта
         // чтобы избежать показа сообщений с неправильным isOutgoing
@@ -280,104 +394,16 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
                     .flowOn(Dispatchers.IO) // 🚀 Flow работает на IO
                     .debounce(100) // 🚀 Батчим быстрые обновления (N сообщений → 1 обработка)
                     .map { dialogsList ->
-                        val mapStart = System.currentTimeMillis()
+                        mapDialogListIncremental(
-                        // <20> ОПТИМИЗАЦИЯ: Параллельная расшифровка всех сообщений
+                                dialogsList = dialogsList,
-                        withContext(Dispatchers.Default) {
+                                privateKey = privateKey,
-                            dialogsList
+                                cache = dialogsUiCache,
-                                    .map { dialog ->
+                                isRequestsFlow = false
-                                        async {
+                        )
-                                            // 🔥 Загружаем информацию о пользователе если её нет
-                                            // 📁 НЕ загружаем для Saved Messages
-                                            val isSavedMessages =
-                                                    (dialog.account == dialog.opponentKey)
-                                            if (!isSavedMessages &&
-                                                            (dialog.opponentTitle.isEmpty() ||
-                                                                    dialog.opponentTitle ==
-                                                                            dialog.opponentKey ||
-                                                                    dialog.opponentTitle ==
-                                                                            dialog.opponentKey.take(
-                                                                                    7
-                                                                            ) ||
-                                                                    dialog.opponentTitle ==
-                                                                            dialog.opponentKey.take(
-                                                                                    8
-                                                                            ))
-                                            ) {
-                                                loadUserInfoForDialog(dialog.opponentKey)
-                                            }
-
-                                            // Безопасная дешифровка превью: никогда не показываем raw ciphertext.
-                                            val decryptedLastMessage =
-                                                    decryptDialogPreview(
-                                                            encryptedLastMessage =
-                                                                    dialog.lastMessage,
-                                                            privateKey = privateKey
-                                                    )
-
-                                            // <20> ОПТИМИЗАЦИЯ: Используем денормализованные поля из
-                                            // DialogEntity
-                                            // Статус и attachments уже записаны в dialogs через
-                                            // updateDialogFromMessages()
-                                            // Это устраняет N+1 проблему (ранее: 2 запроса на
-                                            // каждый диалог)
-
-                                            // 📎 Определяем тип attachment из кэшированного поля в
-                                            // DialogEntity
-                                            val attachmentType =
-                                                    resolveAttachmentType(
-                                                            attachmentsJson =
-                                                                    dialog.lastMessageAttachments,
-                                                            decryptedLastMessage =
-                                                                    decryptedLastMessage
-                                                    )
-                                            val groupLastSenderInfo =
-                                                    resolveGroupLastSenderInfo(dialog)
-
-                                            DialogUiModel(
-                                                    id = dialog.id,
-                                                    account = dialog.account,
-                                                    opponentKey = dialog.opponentKey,
-                                                    opponentTitle = dialog.opponentTitle,
-                                                    opponentUsername = dialog.opponentUsername,
-                                                    lastMessage = decryptedLastMessage,
-                                                    lastMessageTimestamp =
-                                                            dialog.lastMessageTimestamp,
-                                                    unreadCount = dialog.unreadCount,
-                                                    isOnline = dialog.isOnline,
-                                                    lastSeen = dialog.lastSeen,
-                                                    verified = dialog.verified,
-                                                    isSavedMessages =
-                                                            isSavedMessages, // 📁 Saved Messages
-                                                    lastMessageFromMe =
-                                                            dialog.lastMessageFromMe, // 🚀 Из
-                                                    // DialogEntity (денормализовано)
-                                                    lastMessageDelivered =
-                                                            dialog.lastMessageDelivered, // 🚀 Из
-                                                    // DialogEntity (денормализовано)
-                                                    lastMessageRead =
-                                                            dialog.lastMessageRead, // 🚀 Из
-                                                    // DialogEntity
-                                                    // (денормализовано)
-                                                    lastMessageAttachmentType =
-                                                            attachmentType, // 📎 Тип attachment
-                                                    lastMessageSenderPrefix =
-                                                            groupLastSenderInfo?.senderPrefix,
-                                                    lastMessageSenderKey =
-                                                            groupLastSenderInfo?.senderKey
-                                            )
-                                        }
-                                    }
-                                    .awaitAll()
-                        }
-                                .also {
-                                    val mapTime = System.currentTimeMillis() - mapStart
-                                }
                     }
                     .distinctUntilChanged() // 🔥 ИСПРАВЛЕНИЕ: Игнорируем дублирующиеся списки
                     .collect { decryptedDialogs ->
-                        // Deduplicate by opponentKey to prevent LazyColumn crash
+                        _dialogs.value = decryptedDialogs
-                        // (Key "X" was already used)
-                        _dialogs.value = decryptedDialogs.distinctBy { it.opponentKey }
                         // 🚀 Убираем skeleton после первой загрузки
                         if (_isLoading.value) _isLoading.value = false
 
@@ -400,83 +426,15 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
                     .flowOn(Dispatchers.IO)
                     .debounce(100) // 🚀 Батчим быстрые обновления
                     .map { requestsList ->
-                        // 🚀 ОПТИМИЗАЦИЯ: Параллельная расшифровка
+                        mapDialogListIncremental(
-                        withContext(Dispatchers.Default) {
+                                dialogsList = requestsList,
-                            requestsList
+                                privateKey = privateKey,
-                                    .map { dialog ->
+                                cache = requestsUiCache,
-                                        async {
+                                isRequestsFlow = true
-                                            // 🔥 Загружаем информацию о пользователе если её нет
+                        )
-                                            // 📁 НЕ загружаем для Saved Messages
-                                            val isSavedMessages =
-                                                    (dialog.account == dialog.opponentKey)
-                                            if (!isSavedMessages &&
-                                                            (dialog.opponentTitle.isEmpty() ||
-                                                                    dialog.opponentTitle ==
-                                                                            dialog.opponentKey)
-                                            ) {
-                                                loadUserInfoForRequest(dialog.opponentKey)
-                                            }
-
-                                            // Безопасная дешифровка превью: никогда не показываем raw ciphertext.
-                                            val decryptedLastMessage =
-                                                    decryptDialogPreview(
-                                                            encryptedLastMessage =
-                                                                    dialog.lastMessage,
-                                                            privateKey = privateKey
-                                                    )
-
-                                            // 📎 Определяем тип attachment из кэшированного поля в
-                                            // DialogEntity
-                                            val attachmentType =
-                                                    resolveAttachmentType(
-                                                            attachmentsJson =
-                                                                    dialog.lastMessageAttachments,
-                                                            decryptedLastMessage =
-                                                                    decryptedLastMessage
-                                                    )
-                                            val groupLastSenderInfo =
-                                                    resolveGroupLastSenderInfo(dialog)
-
-                                            DialogUiModel(
-                                                    id = dialog.id,
-                                                    account = dialog.account,
-                                                    opponentKey = dialog.opponentKey,
-                                                    opponentTitle =
-                                                            dialog.opponentTitle, // 🔥 Показываем
-                                                    // имя как в
-                                                    // обычных чатах
-                                                    opponentUsername = dialog.opponentUsername,
-                                                    lastMessage = decryptedLastMessage,
-                                                    lastMessageTimestamp =
-                                                            dialog.lastMessageTimestamp,
-                                                    unreadCount = dialog.unreadCount,
-                                                    isOnline = dialog.isOnline,
-                                                    lastSeen = dialog.lastSeen,
-                                                    verified = dialog.verified,
-                                                    isSavedMessages =
-                                                            (dialog.account ==
-                                                                    dialog.opponentKey), // 📁 Saved
-                                                    // Messages
-                                                    lastMessageFromMe = dialog.lastMessageFromMe,
-                                                    lastMessageDelivered =
-                                                            dialog.lastMessageDelivered,
-                                                    lastMessageRead = dialog.lastMessageRead,
-                                                    lastMessageAttachmentType =
-                                                            attachmentType, // 📎 Тип attachment
-                                                    lastMessageSenderPrefix =
-                                                            groupLastSenderInfo?.senderPrefix,
-                                                    lastMessageSenderKey =
-                                                            groupLastSenderInfo?.senderKey
-                                            )
-                                        }
-                                    }
-                                    .awaitAll()
-                        }
                     }
                     .distinctUntilChanged() // 🔥 ИСПРАВЛЕНИЕ: Игнорируем дублирующиеся списки
-                    .collect { decryptedRequests ->
+                    .collect { decryptedRequests -> _requests.value = decryptedRequests }
-                        _requests.value = decryptedRequests.distinctBy { it.opponentKey }
-                    }
         }
 
         // 📊 Подписываемся на количество requests
@@ -584,38 +542,20 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
     }
 
     private fun resolveAttachmentType(
-            attachmentsJson: String,
+            attachmentType: Int,
             decryptedLastMessage: String
     ): String? {
-        if (attachmentsJson.isEmpty() || attachmentsJson == "[]") return null
+        return when (attachmentType) {
-
+            0 -> "Photo" // AttachmentType.IMAGE = 0
-        return try {
+            1 -> {
-            val attachments = org.json.JSONArray(attachmentsJson)
+                // AttachmentType.MESSAGES = 1 (Reply/Forward).
-            if (attachments.length() == 0) return null
+                // Если текст пустой — показываем "Forwarded" как в desktop.
-
+                if (decryptedLastMessage.isNotEmpty()) null else "Forwarded"
-            val firstAttachment = attachments.getJSONObject(0)
-            when (firstAttachment.optInt("type", -1)) {
-                0 -> "Photo" // AttachmentType.IMAGE = 0
-                1 -> {
-                    // AttachmentType.MESSAGES = 1 (Reply/Forward).
-                    // Если текст пустой — показываем "Forwarded" как в desktop.
-                    if (decryptedLastMessage.isNotEmpty()) null else "Forwarded"
-                }
-                2 -> "File" // AttachmentType.FILE = 2
-                3 -> "Avatar" // AttachmentType.AVATAR = 3
-                4 -> "Call" // AttachmentType.CALL = 4
-                else -> null
-            }
-        } catch (e: Exception) {
-            // Fallback: если JSON поврежден, но видно MESSAGES attachment и текста нет — это forward.
-            val hasMessagesType =
-                    attachmentsJson.contains("\"type\":1") ||
-                            attachmentsJson.contains("\"type\": 1")
-            if (decryptedLastMessage.isEmpty() && hasMessagesType) {
-                "Forwarded"
-            } else {
-                null
             }
+            2 -> "File" // AttachmentType.FILE = 2
+            3 -> "Avatar" // AttachmentType.AVATAR = 3
+            4 -> "Call" // AttachmentType.CALL = 4
+            else -> null
         }
     }
 
@@ -701,6 +641,8 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
             _requests.value = _requests.value.filter { it.opponentKey != opponentKey }
             // 🔥 Обновляем счетчик requests
             _requestsCount.value = _requests.value.size
+            dialogsUiCache.remove(opponentKey)
+            requestsUiCache.remove(opponentKey)
 
             // Вычисляем правильный dialog_key
             val dialogKey =
@@ -760,6 +702,8 @@ class ChatsListViewModel(application: Application) : AndroidViewModel(applicatio
                 _dialogs.value = _dialogs.value.filter { it.opponentKey != groupPublicKey }
                 _requests.value = _requests.value.filter { it.opponentKey != groupPublicKey }
                 _requestsCount.value = _requests.value.size
+                dialogsUiCache.remove(groupPublicKey)
+                requestsUiCache.remove(groupPublicKey)
                 MessageRepository.getInstance(getApplication()).clearDialogCache(groupPublicKey)
                 ChatViewModel.clearCacheForOpponent(groupPublicKey)
             }

app/src/main/java/com/rosetta/messenger/ui/chats/SearchScreen.kt

@@ -45,7 +45,7 @@ import com.rosetta.messenger.repository.AvatarRepository
 import com.rosetta.messenger.ui.components.AvatarImage
 import com.rosetta.messenger.ui.components.VerifiedBadge
 import com.rosetta.messenger.database.RosettaDatabase
-import com.rosetta.messenger.database.MessageEntity
+import com.rosetta.messenger.database.MessageSearchIndexEntity
 import com.rosetta.messenger.network.AttachmentType
 import com.rosetta.messenger.network.MessageAttachment
 import androidx.compose.ui.graphics.asImageBitmap
@@ -63,9 +63,6 @@ import com.rosetta.messenger.network.ProtocolState
 import com.rosetta.messenger.network.SearchUser
 import com.rosetta.messenger.ui.onboarding.PrimaryBlue as AppPrimaryBlue
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.async
-import kotlinx.coroutines.awaitAll
-import kotlinx.coroutines.sync.Semaphore
 import kotlinx.coroutines.sync.withPermit
 import kotlinx.coroutines.withContext
 import org.json.JSONArray
@@ -1005,9 +1002,10 @@ private fun MessagesTabContent(
     }
 
     // Persistent decryption cache: messageId → plaintext (survives re-queries)
-    val decryptCache = remember { ConcurrentHashMap<String, String>(512) }
+    val decryptCache = remember(currentUserPublicKey) { ConcurrentHashMap<String, String>(512) }
     // Cache for dialog metadata: opponentKey → (title, username, verified)
-    val dialogCache = remember { ConcurrentHashMap<String, Triple<String, String, Int>>() }
+    val dialogCache =
+            remember(currentUserPublicKey) { ConcurrentHashMap<String, Triple<String, String, Int>>() }
 
     val dateFormat = remember { SimpleDateFormat("dd MMM, HH:mm", Locale.getDefault()) }
 
@@ -1044,67 +1042,66 @@ private fun MessagesTabContent(
                 }
 
                 val queryLower = searchQuery.trim().lowercase()
-                val matched = mutableListOf<MessageSearchResult>()
-                val semaphore = Semaphore(4)
-                val batchSize = 200
-                var offset = 0
-                val maxMessages = 5000 // Safety cap
                 val maxResults = 50   // Don't return more than 50 matches
+                val batchSize = 200
+                val indexDao = db.messageSearchIndexDao()
 
-                while (offset < maxMessages && matched.size < maxResults) {
+                fun toUiResult(item: MessageSearchIndexEntity): MessageSearchResult {
-                    val batch = db.messageDao().getAllMessagesPaged(
+                    val normalized = item.opponentKey.trim()
-                            currentUserPublicKey, batchSize, offset
+                    val meta = dialogCache[normalized]
+                    return MessageSearchResult(
+                            messageId = item.messageId,
+                            dialogKey = item.dialogKey,
+                            opponentKey = normalized,
+                            opponentTitle = meta?.first.orEmpty(),
+                            opponentUsername = meta?.second.orEmpty(),
+                            plainText = item.plainText,
+                            timestamp = item.timestamp,
+                            fromMe = item.fromMe == 1,
+                            verified = meta?.third ?: 0
                     )
-                    if (batch.isEmpty()) break
-
-                    // Decrypt in parallel, filter by query
-                    val batchResults = kotlinx.coroutines.coroutineScope {
-                        batch.chunked(20).flatMap { chunk ->
-                            chunk.map { msg ->
-                                async {
-                                    semaphore.withPermit {
-                                        val cached = decryptCache[msg.messageId]
-                                        val plain = if (cached != null) {
-                                            cached
-                                        } else {
-                                            val decrypted = try {
-                                                CryptoManager.decryptWithPassword(
-                                                        msg.plainMessage, privateKey
-                                                )
-                                            } catch (_: Exception) { null }
-                                            if (!decrypted.isNullOrBlank()) {
-                                                decryptCache[msg.messageId] = decrypted
-                                            }
-                                            decrypted
-                                        }
-
-                                        if (!plain.isNullOrBlank() && plain.lowercase().contains(queryLower)) {
-                                            val opponent = if (msg.fromMe == 1) msg.toPublicKey else msg.fromPublicKey
-                                            val normalized = opponent.trim()
-                                            val meta = dialogCache[normalized]
-                                            MessageSearchResult(
-                                                    messageId = msg.messageId,
-                                                    dialogKey = msg.dialogKey,
-                                                    opponentKey = normalized,
-                                                    opponentTitle = meta?.first.orEmpty(),
-                                                    opponentUsername = meta?.second.orEmpty(),
-                                                    plainText = plain,
-                                                    timestamp = msg.timestamp,
-                                                    fromMe = msg.fromMe == 1,
-                                                    verified = meta?.third ?: 0
-                                            )
-                                        } else null
-                                    }
-                                }
-                            }.awaitAll().filterNotNull()
-                        }
-                    }
-
-                    matched.addAll(batchResults)
-                    offset += batchSize
                 }
 
-                results = matched.take(maxResults)
+                var indexed = indexDao.search(currentUserPublicKey, queryLower, maxResults, 0)
+                var indexingPasses = 0
+                while (indexed.size < maxResults && indexingPasses < 15) {
+                    val unindexed = indexDao.getUnindexedMessages(currentUserPublicKey, batchSize)
+                    if (unindexed.isEmpty()) break
+
+                    val rows = ArrayList<MessageSearchIndexEntity>(unindexed.size)
+                    unindexed.forEach { msg ->
+                        val plain =
+                                decryptCache[msg.messageId]
+                                        ?: try {
+                                            CryptoManager.decryptWithPassword(msg.plainMessage, privateKey)
+                                        } catch (_: Exception) {
+                                            null
+                                        }.orEmpty()
+                        if (plain.isNotEmpty()) {
+                            decryptCache[msg.messageId] = plain
+                        }
+                        val opponent = if (msg.fromMe == 1) msg.toPublicKey else msg.fromPublicKey
+                        rows.add(
+                                MessageSearchIndexEntity(
+                                        account = currentUserPublicKey,
+                                        messageId = msg.messageId,
+                                        dialogKey = msg.dialogKey,
+                                        opponentKey = opponent.trim(),
+                                        timestamp = msg.timestamp,
+                                        fromMe = msg.fromMe,
+                                        plainText = plain,
+                                        plainTextNormalized = plain.lowercase()
+                                )
+                        )
+                    }
+                    if (rows.isNotEmpty()) {
+                        indexDao.upsert(rows)
+                    }
+                    indexingPasses++
+                    indexed = indexDao.search(currentUserPublicKey, queryLower, maxResults, 0)
+                }
+
+                results = indexed.map(::toUiResult)
             } catch (_: Exception) {
                 results = emptyList()
             }