The wallpaper autostart script was failing on Plasma 6 + Wayland,
causing the live session to show the default Plasma background instead
of the Antergos NeXT branded wallpaper.
Changes:
- Rewrote set-antergos-wallpaper.sh with three fallback methods:
1. plasma-apply-wallpaperimage (primary)
2. kwriteconfig6 + qdbus6 config reload
3. qdbus6 evaluateScript API
- Added direct wallpaper config in live-overlay/home/antergos/ for
the live user (most reliable, runs before Plasma starts)
- Updated existing /etc/skel/ and main.xml defaults to use
antergos-wallpaper.png instead of adwaita-morning.webp
- Downloaded and included original Antergos wallpaper from the
project's wallpapers repo
- buildiso: copy Antergos GRUB theme to ISO boot directory
- profile.yaml: add antergos-grub-theme to rootfs packages
- netinstall: move antergos-grub-theme from optional Style to mandatory Default group
- main.xml: set Antergos wallpaper as KDE system default
- set-antergos-wallpaper.sh: add QDbus fallback, wait for plasmashell
- .gitignore: ignore linux-next/ and winver/
Add /etc/skel autostart that runs plasma-apply-wallpaperimage once on
first KDE login to set the Adwaita Morning wallpaper as default. Creates
a marker file so it never runs again. Works for both live ISO and
installed system.