Harden bot against runtime stalls

src/handlers/account_services.py

@@ -15,7 +15,8 @@ class AccountParticipationService:
     async def add_account_to_lottery(
         session: AsyncSession, 
         lottery_id: int, 
-        account_number: str
+        account_number: str,
+        commit: bool = True,
     ) -> Dict[str, Any]:
         """
         Добавить счет в розыгрыш.
@@ -91,7 +92,10 @@ class AccountParticipationService:
             account_id=account_record.id if account_record else None
         )
         session.add(participation)
-        await session.commit()
+        if commit:
+            await session.commit()
+        else:
+            await session.flush()
         
         card_info = f" (карта: {card_number})" if card_number else ""
         return {
@@ -120,7 +124,7 @@ class AccountParticipationService:
         
         for account in account_numbers:
             result = await AccountParticipationService.add_account_to_lottery(
-                session, lottery_id, account
+                session, lottery_id, account, commit=False
             )
             
             if result["success"]:
@@ -132,6 +136,8 @@ class AccountParticipationService:
                 results["skipped_accounts"].append(account)
                 results["errors"].append(result["message"])
                 results["details"].append(f"❌ {result['message']}")
+
+        await session.commit()
         
         return results
     
@@ -139,7 +145,8 @@ class AccountParticipationService:
     async def remove_account_from_lottery(
         session: AsyncSession,
         lottery_id: int,
-        account_number: str
+        account_number: str,
+        commit: bool = True,
     ) -> Dict[str, Any]:
         """Удалить счет из розыгрыша"""
         formatted_account = format_account_number(account_number)
@@ -164,7 +171,10 @@ class AccountParticipationService:
             }
         
         await session.delete(participation)
-        await session.commit()
+        if commit:
+            await session.commit()
+        else:
+            await session.flush()
         
         return {
             "success": True,
@@ -216,13 +226,21 @@ class AccountParticipationService:
             pattern: Паттерн поиска (например "11-22" или "33")
             limit: Максимальное количество результатов
         """
-        # Получаем все счета розыгрыша
-        all_accounts = await AccountParticipationService.get_lottery_accounts(
-            session, lottery_id
+        digits_pattern = ''.join(c for c in pattern if c.isdigit())
+        if not digits_pattern:
+            return []
+
+        result = await session.execute(
+            select(Participation.account_number)
+            .where(
+                Participation.lottery_id == lottery_id,
+                Participation.account_number.isnot(None),
+                func.replace(Participation.account_number, '-', '').contains(digits_pattern),
+            )
+            .order_by(Participation.created_at.desc())
+            .limit(limit)
         )
-        
-        # Ищем совпадения
-        return search_accounts_by_pattern(pattern, all_accounts)[:limit]
+        return [account for account in result.scalars().all() if account]
     
     @staticmethod
     async def set_account_as_winner(