Add runtime script management with Home Assistant integration

Features:
- Runtime script CRUD operations (create, update, delete)
- Thread-safe ConfigManager for YAML updates
- WebSocket notifications for script changes
- Web UI script management interface with full CRUD
- Home Assistant auto-reload on script changes
- Client-side position interpolation for smooth playback
- Include command field in script list API response

Technical improvements:
- Added broadcast_scripts_changed() to WebSocket manager
- Enhanced HA integration to handle scripts_changed messages
- Implemented smooth position updates in Web UI (100ms interval)
- Thread-safe configuration updates with file locking

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

media_server/services/__init__.py

@@ -41,8 +41,9 @@ def get_media_controller() -> "MediaController":
 
     if system == "Windows":
         from .windows_media import WindowsMediaController
+        from ..config import settings
 
-        _controller_instance = WindowsMediaController()
+        _controller_instance = WindowsMediaController(audio_device=settings.audio_device)
     elif system == "Linux":
         # Check if running on Android
         if _is_android():
@@ -72,4 +73,13 @@ def get_current_album_art() -> bytes | None:
     return None
 
 
-__all__ = ["get_media_controller", "get_current_album_art"]
+def get_audio_devices() -> list[dict[str, str]]:
+    """Get list of available audio output devices (Windows only for now)."""
+    system = platform.system()
+    if system == "Windows":
+        from .windows_media import WindowsMediaController
+        return WindowsMediaController.get_audio_devices()
+    return []
+
+
+__all__ = ["get_media_controller", "get_current_album_art", "get_audio_devices"]