Enhance bot functionality and refactor database interactions

- Added `ca-certificates` installation to Dockerfile for improved network security.
- Updated health check command in Dockerfile to include better timeout handling.
- Refactored `run_helper.py` to implement proper signal handling and logging during shutdown.
- Transitioned database operations to an asynchronous model in `async_db.py`, improving performance and responsiveness.
- Updated database schema to support new foreign key relationships and optimized indexing for better query performance.
- Enhanced various bot handlers to utilize async database methods, improving overall efficiency and user experience.
- Removed obsolete database and fix scripts to streamline the project structure.

helper_bot/handlers/voice/utils.py

@@ -70,26 +70,30 @@ def plural_time(type: int, n: float) -> str:
     return str(new_number) + ' ' + word[p]
 
 
-def get_last_message_text(bot_db) -> Optional[str]:
+async def get_last_message_text(bot_db) -> Optional[str]:
     """Получить текст сообщения о времени последней записи"""
     try:
-        date_from_db = bot_db.last_date_audio()
-        return format_time_ago(date_from_db)
+        date_from_db = await bot_db.last_date_audio()
+        if date_from_db is None:
+            return None
+        # Преобразуем UNIX timestamp в строку для format_time_ago
+        date_string = datetime.fromtimestamp(date_from_db).strftime("%Y-%m-%d %H:%M:%S")
+        return format_time_ago(date_string)
     except Exception as e:
         logger.error(f"Не удалось получить дату последнего сообщения - {e}")
         return None
 
 
-def validate_voice_message(message) -> bool:
+async def validate_voice_message(message) -> bool:
     """Проверить валидность голосового сообщения"""
     return message.content_type == 'voice'
 
 
-def get_user_emoji_safe(bot_db, user_id: int) -> str:
+async def get_user_emoji_safe(bot_db, user_id: int) -> str:
     """Безопасно получить эмодзи пользователя"""
     try:
-        user_emoji = bot_db.check_emoji_for_user(user_id)
-        return user_emoji if user_emoji else "😊"
+        user_emoji = await bot_db.get_user_emoji(user_id)
+        return user_emoji if user_emoji and user_emoji != "Смайл еще не определен" else "😊"
     except Exception as e:
         logger.error(f"Ошибка при получении эмодзи пользователя {user_id}: {e}")
         return "😊"