feat: Enhance group chat functionality and UI improvements

- Added support for group action system messages in MessageBubble.
- Implemented group invite handling with inline cards for joining groups.
- Updated MessageBubble to display group sender labels and admin badges.
- Enhanced image decryption logic for group attachments.
- Modified BlurredAvatarBackground to load system avatars based on public keys.
- Improved SwipeBackContainer with layer management for better swipe effects.
- Updated VerifiedBadge to use dynamic icons based on user verification status.
- Added new drawable resource for admin badge icon.

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

@@ -16,8 +16,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
                         BlacklistEntity::class,
                         AvatarCacheEntity::class,
                         AccountSyncTimeEntity::class,
+                        GroupEntity::class,
                         PinnedMessageEntity::class],
-        version = 13,
+        version = 14,
         exportSchema = false
 )
 abstract class RosettaDatabase : RoomDatabase() {
@@ -27,6 +28,7 @@ abstract class RosettaDatabase : RoomDatabase() {
     abstract fun blacklistDao(): BlacklistDao
     abstract fun avatarDao(): AvatarDao
     abstract fun syncTimeDao(): SyncTimeDao
+    abstract fun groupDao(): GroupDao
     abstract fun pinnedMessageDao(): PinnedMessageDao
 
     companion object {
@@ -176,6 +178,30 @@ abstract class RosettaDatabase : RoomDatabase() {
                     }
                 }
 
+        /**
+         * 👥 МИГРАЦИЯ 13->14: Таблица groups для групповых диалогов
+         */
+        private val MIGRATION_13_14 =
+                object : Migration(13, 14) {
+                    override fun migrate(database: SupportSQLiteDatabase) {
+                        database.execSQL(
+                                """
+                    CREATE TABLE IF NOT EXISTS groups (
+                        id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                        account TEXT NOT NULL,
+                        group_id TEXT NOT NULL,
+                        title TEXT NOT NULL,
+                        description TEXT NOT NULL,
+                        `key` TEXT NOT NULL
+                    )
+                """
+                        )
+                        database.execSQL(
+                                "CREATE UNIQUE INDEX IF NOT EXISTS index_groups_account_group_id ON groups (account, group_id)"
+                        )
+                    }
+                }
+
         fun getDatabase(context: Context): RosettaDatabase {
             return INSTANCE
                     ?: synchronized(this) {
@@ -197,7 +223,8 @@ abstract class RosettaDatabase : RoomDatabase() {
                                                 MIGRATION_9_10,
                                                 MIGRATION_10_11,
                                                 MIGRATION_11_12,
-                                                MIGRATION_12_13
+                                                MIGRATION_12_13,
+                                                MIGRATION_13_14
                                         )
                                         .fallbackToDestructiveMigration() // Для разработки - только
                                         // если миграция не