User scripts are do not execute on Windows

Description The user scripts are broken on Windows.

To Reproduce

1. Run the app in either daemon or no-daemon mode, registering a user script
2. Perform any action that triggers the user script registered
3. Check logs, the app triggers cmd with the wrong flag

Expected behavior The user script is executed successfully.

Logs

[DEBUG librespot_playback::player] command=Pause
[TRACE librespot_playback::player] == Stopping sink ==
[TRACE librespot_connect::spirc] ==> Paused
[INFO spotifyd::process] Running "echo hi" using "cmd" with environment variables {"POSITION_MS": "93495", "TRACK_ID": "2iVj11OdEBNIGUv9f7jGPK", "PLAY_REQUEST_ID": "0", "PLAYER_EVENT": "pause"}
Microsoft Windows [Version 10.0.26200.8875]
(c) Microsoft Corporation. All rights reserved.

Compilation flags

• dbus_mpris
• alsa_backend
• portaudio_backend
• pulseaudio_backend
• rodio_backend

Versions (please complete the following information):

• OS: Windows 11
• Spotifyd: 6af1e48
• cargo: cargo 1.96.1 (356927216 2026-06-26)

Additional context This can be fixed by making the -c flag platform dependent