Remove obsolete configuration management and test settings files

- Deleted the `config.py` file responsible for managing bot configuration via environment variables and `.env` files, as it is no longer needed.
- Removed the `test_settings.ini` file used for testing, which contained mock configuration data.
- Cleaned up the project structure by eliminating unused files to enhance maintainability.

tests/test_voice_bot_architecture.py

@@ -1,6 +1,7 @@
 import pytest
 from unittest.mock import Mock, AsyncMock, patch
 from datetime import datetime
+from pathlib import Path
 
 from helper_bot.handlers.voice.services import VoiceBotService
 from helper_bot.handlers.voice.exceptions import VoiceMessageError, AudioProcessingError
@@ -88,6 +89,57 @@ class TestVoiceBotService:
         voice_service.clear_user_listenings(123)
         
         mock_bot_db.delete_listen_count_for_user.assert_called_once_with(123)
+    
+    def test_get_remaining_audio_count_success(self, voice_service, mock_bot_db):
+        """Тест получения количества оставшихся аудио"""
+        mock_bot_db.check_listen_audio.return_value = ['audio1', 'audio2', 'audio3']
+        
+        result = voice_service.get_remaining_audio_count(123)
+        
+        assert result == 3
+        mock_bot_db.check_listen_audio.assert_called_once_with(user_id=123)
+    
+    def test_get_remaining_audio_count_zero(self, voice_service, mock_bot_db):
+        """Тест получения количества оставшихся аудио когда их нет"""
+        mock_bot_db.check_listen_audio.return_value = []
+        
+        result = voice_service.get_remaining_audio_count(123)
+        
+        assert result == 0
+        mock_bot_db.check_listen_audio.assert_called_once_with(user_id=123)
+    
+    @pytest.mark.asyncio
+    async def test_send_welcome_messages_success(self, voice_service, mock_bot_db, mock_settings):
+        """Тест успешной отправки приветственных сообщений"""
+        mock_message = Mock()
+        mock_message.from_user.id = 123
+        mock_message.answer = AsyncMock()
+        mock_message.answer.return_value = Mock()
+        mock_message.answer_sticker = AsyncMock()
+        
+        with patch.object(voice_service, 'get_welcome_sticker') as mock_sticker:
+            mock_sticker.return_value = 'test_sticker.tgs'
+            
+            await voice_service.send_welcome_messages(mock_message, '😊')
+            
+            # Проверяем, что сообщения отправлены
+            assert mock_message.answer.call_count >= 1
+    
+    @pytest.mark.asyncio
+    async def test_send_welcome_messages_no_sticker(self, voice_service, mock_bot_db, mock_settings):
+        """Тест отправки приветственных сообщений без стикера"""
+        mock_message = Mock()
+        mock_message.from_user.id = 123
+        mock_message.answer = AsyncMock()
+        mock_message.answer.return_value = Mock()
+        
+        with patch.object(voice_service, 'get_welcome_sticker') as mock_sticker:
+            mock_sticker.return_value = None
+            
+            await voice_service.send_welcome_messages(mock_message, '😊')
+            
+            # Проверяем, что сообщения отправлены
+            assert mock_message.answer.call_count >= 1
 
 
 class TestVoiceHandlers:
@@ -149,6 +201,7 @@ class TestUtils:
         """Тест валидации голосового сообщения"""
         mock_message = Mock()
         mock_message.content_type = 'voice'
+        mock_message.voice = Mock()
         
         result = validate_voice_message(mock_message)
         
@@ -171,6 +224,22 @@ class TestUtils:
         
         assert result == "😊"
         mock_bot_db.check_emoji_for_user.assert_called_once_with(123)
+    
+    def test_get_user_emoji_safe_none(self, mock_bot_db):
+        """Тест безопасного получения эмодзи когда его нет"""
+        mock_bot_db.check_emoji_for_user.return_value = None
+        
+        result = get_user_emoji_safe(mock_bot_db, 123)
+        
+        assert result == "😊"
+    
+    def test_get_user_emoji_safe_error(self, mock_bot_db):
+        """Тест безопасного получения эмодзи при ошибке"""
+        mock_bot_db.check_emoji_for_user.return_value = "Ошибка"
+        
+        result = get_user_emoji_safe(mock_bot_db, 123)
+        
+        assert result == "Ошибка"
 
 
 class TestExceptions: