LeGameOS 0.5.0 - Desktop Control Center and wallpaper update

1. Close games and the old Control Center. Keep all existing LeGameOS backups.
2. Reopen AME Wizard and import LeGameOS-0.5.0.apbx from the same gaming
   administrator account. Apply the playbook and restart Windows.
3. Open LeGameOS Control Center on the desktop. It now launches the native
   dark Windows app with the orange LeGameOS shield icon.
4. The Wallpapers page contains only Locker Room (installation default),
   Grand Library and Cosmic Court. All three are 3840x2160 resampled exports
   of the edited artwork, with the small Made by LeSamsky credit.

This keeps the 0.3.2 permission fixes and the 0.4.0 Competition settings.
The old shipped Galactic Court, Rain Court and Eclipse Arena assets are
removed on upgrade if their hashes still match the shipped originals.
User-modified files and other Windows wallpaper folders are not deleted.

HVCI and VBS are NOT changed by installation. Their Enable/Disable buttons
are manual, require normal Windows administrator elevation, save originals
in C:\ProgramData\LeGameOS\Security.json and require a restart.
VALORANT/Vanguard can require HVCI/VBS. Check the game's security requirements.
The app respects managed policy and firmware locks, and will not turn off
Credential Guard or other configured VBS protections.

No app service, startup task, tray agent, automatic tuning loop or automatic
reboot is installed. Close the app before gaming and before idle measurement.

If the app fails to launch, use the installed LeGameOS.cmd for the advanced
console or RESTORE.cmd for recovery. See CONTROL-CENTER.html and VALIDATION.md.
Windows app rendering/radio/registry operation and game performance still
require verification on a real Windows 11 PC.
