Fix missing Tuple import in async_nfo_manager.py

- Add Tuple to typing imports to resolve NameError
- Fixes container startup failure after modular refactoring
- Version bump to 2.0.4

VERSION

@@ -1 +1 @@
-2.0.3
+2.0.4

core/async_nfo_manager.py

@@ -4,7 +4,7 @@ High-performance async NFO file operations with concurrent processing
 """
 import asyncio
 from pathlib import Path
-from typing import Optional, List, Dict, Any
+from typing import Optional, List, Dict, Any, Tuple
 from datetime import datetime
 import xml.etree.ElementTree as ET