feat: добавлена система миграций БД и CI/CD пайплайны

- Создана система отслеживания миграций (MigrationRepository, таблица migrations)
- Добавлен скрипт apply_migrations.py для автоматического применения миграций
- Созданы CI/CD пайплайны (.github/workflows/ci.yml, deploy.yml)
- Обновлена документация по миграциям в database-patterns.md
- Миграции применяются автоматически при деплое в продакшн

helper_bot/middlewares/metrics_middleware.py

@@ -3,25 +3,29 @@ Enhanced Metrics middleware for aiogram 3.x.
 Automatically collects ALL available metrics for comprehensive monitoring.
 """
 
-from typing import Any, Awaitable, Callable, Dict, Union, Optional
-from aiogram import BaseMiddleware
-from aiogram.types import TelegramObject, Message, CallbackQuery
-from aiogram.enums import ChatType
-import time
-import logging
 import asyncio
+import logging
+import time
+from typing import Any, Awaitable, Callable, Dict, Optional, Union
+
+from aiogram import BaseMiddleware
+from aiogram.enums import ChatType
+from aiogram.types import CallbackQuery, Message, TelegramObject
+
 from ..utils.metrics import metrics
 
 # Import button command mapping
 try:
-    from ..handlers.private.constants import BUTTON_COMMAND_MAPPING
+    from ..handlers.admin.constants import (ADMIN_BUTTON_COMMAND_MAPPING,
+                                            ADMIN_COMMANDS)
     from ..handlers.callback.constants import CALLBACK_COMMAND_MAPPING
-    from ..handlers.admin.constants import ADMIN_BUTTON_COMMAND_MAPPING, ADMIN_COMMANDS
-    from ..handlers.voice.constants import (
-        BUTTON_COMMAND_MAPPING as VOICE_BUTTON_COMMAND_MAPPING, 
-        COMMAND_MAPPING as VOICE_COMMAND_MAPPING,
+    from ..handlers.private.constants import BUTTON_COMMAND_MAPPING
+    from ..handlers.voice.constants import \
+        BUTTON_COMMAND_MAPPING as VOICE_BUTTON_COMMAND_MAPPING
+    from ..handlers.voice.constants import \
         CALLBACK_COMMAND_MAPPING as VOICE_CALLBACK_COMMAND_MAPPING
-    )
+    from ..handlers.voice.constants import \
+        COMMAND_MAPPING as VOICE_COMMAND_MAPPING
 except ImportError:
     # Fallback if constants not available
     BUTTON_COMMAND_MAPPING = {}