Configure your device to check for updates automatically every day.
Set it once, and never touch it again.
Open the Shortcuts app on your iPhone and go to the "Automation" tab at the bottom.
Tap + or "New Automation" → Select Time of Day.
Tap "Next" / "New Blank Automation" and add these specific actions in order:
In the "Set Wallpaper Photo" action, tap the small arrow > next to the image variable.
Make sure to DISABLE "Show Preview" and DISABLE "Crop to Subject" if available.
This ensures it runs silently without asking you for permission every morning.