Исправлены синхронизация групп, выделение сообщений и фон чата

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

@@ -42,12 +42,18 @@ interface AvatarDao {
      */
     @Query("SELECT * FROM avatar_cache WHERE public_key = :publicKey ORDER BY timestamp DESC")
     fun getAvatars(publicKey: String): Flow<List<AvatarCacheEntity>>
+
+    @Query("SELECT * FROM avatar_cache WHERE public_key IN (:publicKeys) ORDER BY timestamp DESC")
+    fun getAvatarsByKeys(publicKeys: List<String>): Flow<List<AvatarCacheEntity>>
     
     /**
      * Получить последний аватар пользователя
      */
     @Query("SELECT * FROM avatar_cache WHERE public_key = :publicKey ORDER BY timestamp DESC LIMIT 1")
     suspend fun getLatestAvatar(publicKey: String): AvatarCacheEntity?
+
+    @Query("SELECT * FROM avatar_cache WHERE public_key IN (:publicKeys) ORDER BY timestamp DESC LIMIT 1")
+    suspend fun getLatestAvatarByKeys(publicKeys: List<String>): AvatarCacheEntity?
     
     /**
      * Получить последний аватар пользователя как Flow