v2.1.3

What's changed\n- Replaced the uncompressed embedded icon frames with PNG-compressed ICO frames.\n- Kept the new application and tray artwork.\n- Reduced the native EXE from about 662 KB to about 343 KB.\n\n### Validation\n- Windows 10/11 native Win32 x64 build\n- Cursor state tests passed\n- Configuration tests passed