feat: Enhance chat UI with group invite handling and new download indicator

- Added support for standalone group invites in MessageBubble component.
- Improved bubble padding and width handling for group invites.
- Refactored MessageBubble to streamline background and border logic.
- Introduced AnimatedDownloadIndicator for a more engaging download experience.
- Created ThemeWallpapers data structure to manage chat wallpapers.
- Implemented WallpaperSelectorRow and WallpaperSelectorItem for theme customization.
- Updated ThemeScreen to allow wallpaper selection and preview.
- Added new drawable resources for download and search icons.

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

@@ -490,6 +490,42 @@ interface MessageDao {
     """
     )
     suspend fun updateDeliveryStatusAndTimestamp(account: String, messageId: String, status: Int, timestamp: Long)
+
+    // ═══════════════════════════════════════════════════════════
+    // 🔍 SEARCH: Media, Files
+    // ═══════════════════════════════════════════════════════════
+
+    /**
+     * Получить сообщения с IMAGE вложениями (type: 0)
+     * Для вкладки "Media" в поиске
+     */
+    @Query(
+            """
+        SELECT * FROM messages
+        WHERE account = :account
+          AND attachments != '[]'
+          AND attachments LIKE '%"type":0%'
+        ORDER BY timestamp DESC
+        LIMIT :limit OFFSET :offset
+    """
+    )
+    suspend fun getMessagesWithMedia(account: String, limit: Int, offset: Int): List<MessageEntity>
+
+    /**
+     * Получить сообщения с FILE вложениями (type: 2)
+     * Для вкладки "Files" в поиске
+     */
+    @Query(
+            """
+        SELECT * FROM messages
+        WHERE account = :account
+          AND attachments != '[]'
+          AND attachments LIKE '%"type":2%'
+        ORDER BY timestamp DESC
+        LIMIT :limit OFFSET :offset
+    """
+    )
+    suspend fun getMessagesWithFiles(account: String, limit: Int, offset: Int): List<MessageEntity>
 }
 
 /** DAO для работы с диалогами */