v2.3.5 - Force Sign-in Screen Update

New Aggressive Method

Directly replaces Windows default lock screen images

New method overwrites the system default images at:

• \C:\Windows\Web\Screen\img100.jpg\ through \img105.jpg\

Uses \ akeown\ and \icacls\ to gain write access to protected system files.

Methods now tried (in order):

1. PersonalizationCSP (MDM-style registry)
2. Group Policy Registry
3. Replace Windows default images - NEW
4. OOBE background folder
5. WinRT API (user context)

This is the most aggressive approach and should force the sign-in screen to display the custom image before login.